Adding upstream version 1:115.7.0.upstream/1%115.7.0upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

8 files changed, 3198 insertions, 0 deletions

diff --git a/testing/web-platform/tests/urlpattern/resources/urlpattern-compare-test-data.json b/testing/web-platform/tests/urlpattern/resources/urlpattern-compare-test-data.json
new file mode 100644
index 0000000000..0043ac08bc
--- /dev/null
+++ b/testing/web-platform/tests/urlpattern/resources/urlpattern-compare-test-data.json
@@ -0,0 +1,152 @@
+[
+  {
+    "component": "pathname",
+    "left": { "pathname": "/foo/a" },
+    "right": { "pathname": "/foo/b" },
+    "expected": -1
+  },
+  {
+    "component": "pathname",
+    "left": { "pathname": "/foo/b" },
+    "right": { "pathname": "/foo/bar" },
+    "expected": -1
+  },
+  {
+    "component": "pathname",
+    "left": { "pathname": "/foo/bar" },
+    "right": { "pathname": "/foo/:bar" },
+    "expected": 1
+  },
+  {
+    "component": "pathname",
+    "left": { "pathname": "/foo/" },
+    "right": { "pathname": "/foo/:bar" },
+    "expected": 1
+  },
+  {
+    "component": "pathname",
+    "left": { "pathname": "/foo/:bar" },
+    "right": { "pathname": "/foo/*" },
+    "expected": 1
+  },
+  {
+    "component": "pathname",
+    "left": { "pathname": "/foo/{bar}" },
+    "right": { "pathname": "/foo/(bar)" },
+    "expected": 1
+  },
+  {
+    "component": "pathname",
+    "left": { "pathname": "/foo/{bar}" },
+    "right": { "pathname": "/foo/{bar}+" },
+    "expected": 1
+  },
+  {
+    "component": "pathname",
+    "left": { "pathname": "/foo/{bar}+" },
+    "right": { "pathname": "/foo/{bar}?" },
+    "expected": 1
+  },
+  {
+    "component": "pathname",
+    "left": { "pathname": "/foo/{bar}?" },
+    "right": { "pathname": "/foo/{bar}*" },
+    "expected": 1
+  },
+  {
+    "component": "pathname",
+    "left": { "pathname": "/foo/(123)" },
+    "right": { "pathname": "/foo/(12)" },
+    "expected": 1
+  },
+  {
+    "component": "pathname",
+    "left": { "pathname": "/foo/:b" },
+    "right": { "pathname": "/foo/:a" },
+    "expected": 0
+  },
+  {
+    "component": "pathname",
+    "left": { "pathname": "*/foo" },
+    "right": { "pathname": "*" },
+    "expected": 1
+  },
+  {
+    "component": "port",
+    "left": { "port": "9" },
+    "right": { "port": "100" },
+    "expected": 1
+  },
+  {
+    "component": "pathname",
+    "left": { "pathname": "foo/:bar?/baz" },
+    "right": { "pathname": "foo/{:bar}?/baz" },
+    "expected": -1
+  },
+  {
+    "component": "pathname",
+    "left": { "pathname": "foo/:bar?/baz" },
+    "right": { "pathname": "foo{/:bar}?/baz" },
+    "expected": 0
+  },
+  {
+    "component": "pathname",
+    "left": { "pathname": "foo/:bar?/baz" },
+    "right": { "pathname": "fo{o/:bar}?/baz" },
+    "expected": 1
+  },
+  {
+    "component": "pathname",
+    "left": { "pathname": "foo/:bar?/baz" },
+    "right": { "pathname": "foo{/:bar/}?baz" },
+    "expected": -1
+  },
+  {
+    "component": "pathname",
+    "left": "https://a.example.com/b?a",
+    "right": "https://b.example.com/a?b",
+    "expected": 1
+  },
+  {
+    "component": "pathname",
+    "left": { "pathname": "/foo/{bar}/baz" },
+    "right": { "pathname": "/foo/bar/baz" },
+    "expected": 0
+  },
+  {
+    "component": "protocol",
+    "left": { "protocol": "a" },
+    "right": { "protocol": "b" },
+    "expected": -1
+  },
+  {
+    "component": "username",
+    "left": { "username": "a" },
+    "right": { "username": "b" },
+    "expected": -1
+  },
+  {
+    "component": "password",
+    "left": { "password": "a" },
+    "right": { "password": "b" },
+    "expected": -1
+  },
+  {
+    "component": "hostname",
+    "left": { "hostname": "a" },
+    "right": { "hostname": "b" },
+    "expected": -1
+  },
+  {
+    "component": "search",
+    "left": { "search": "a" },
+    "right": { "search": "b" },
+    "expected": -1
+  },
+  {
+    "component": "hash",
+    "left": { "hash": "a" },
+    "right": { "hash": "b" },
+    "expected": -1
+  }
+]
diff --git a/testing/web-platform/tests/urlpattern/resources/urlpattern-compare-tests.js b/testing/web-platform/tests/urlpattern/resources/urlpattern-compare-tests.js
new file mode 100644
index 0000000000..b92b53ee45
--- /dev/null
+++ b/testing/web-platform/tests/urlpattern/resources/urlpattern-compare-tests.js
@@ -0,0 +1,26 @@
+function runTests(data) {
+  for (let entry of data) {
+    test(function() {
+      const left = new URLPattern(entry.left);
+      const right = new URLPattern(entry.right);
+
+      assert_equals(URLPattern.compareComponent(entry.component, left, right), entry.expected);
+
+      // We have to coerce to an integer here in order to avoid asserting
+      // that `+0` is `-0`.
+      const reverse_expected = ~~(entry.expected * -1);
+      assert_equals(URLPattern.compareComponent(entry.component, right, left), reverse_expected, "reverse order");
+
+      assert_equals(URLPattern.compareComponent(entry.component, left, left), 0, "left equality");
+      assert_equals(URLPattern.compareComponent(entry.component, right, right), 0, "right equality");
+    }, `Component: ${entry.component} ` +
+       `Left: ${JSON.stringify(entry.left)} ` +
+       `Right: ${JSON.stringify(entry.right)}`);
+  }
+}
+
+promise_test(async function() {
+  const response = await fetch('resources/urlpattern-compare-test-data.json');
+  const data = await response.json();
+  runTests(data);
+}, 'Loading data...');
diff --git a/testing/web-platform/tests/urlpattern/resources/urlpatterntestdata.json b/testing/web-platform/tests/urlpattern/resources/urlpatterntestdata.json
new file mode 100644
index 0000000000..56b3a0c0f2
--- /dev/null
+++ b/testing/web-platform/tests/urlpattern/resources/urlpatterntestdata.json
@@ -0,0 +1,2843 @@
+[
+  {
+    "pattern": [{ "pathname": "/foo/bar" }],
+    "inputs": [{ "pathname": "/foo/bar" }],
+    "expected_match": {
+      "pathname": { "input": "/foo/bar", "groups": {} }
+    }
+  },
+  {
+    "pattern": [{ "pathname": "/foo/bar" }],
+    "inputs": [{ "pathname": "/foo/ba" }],
+    "expected_match": null
+  },
+  {
+    "pattern": [{ "pathname": "/foo/bar" }],
+    "inputs": [{ "pathname": "/foo/bar/" }],
+    "expected_match": null
+  },
+  {
+    "pattern": [{ "pathname": "/foo/bar" }],
+    "inputs": [{ "pathname": "/foo/bar/baz" }],
+    "expected_match": null
+  },
+  {
+    "pattern": [{ "pathname": "/foo/bar" }],
+    "inputs": [ "https://example.com/foo/bar" ],
+    "expected_match": {
+      "hostname": { "input": "example.com", "groups": { "0": "example.com" } },
+      "pathname": { "input": "/foo/bar", "groups": {} },
+      "protocol": { "input": "https", "groups": { "0": "https" } }
+    }
+  },
+  {
+    "pattern": [{ "pathname": "/foo/bar" }],
+    "inputs": [ "https://example.com/foo/bar/baz" ],
+    "expected_match": null
+  },
+  {
+    "pattern": [{ "pathname": "/foo/bar" }],
+    "inputs": [{ "hostname": "example.com", "pathname": "/foo/bar" }],
+    "expected_match": {
+      "hostname": { "input": "example.com", "groups": { "0": "example.com" } },
+      "pathname": { "input": "/foo/bar", "groups": {} }
+    }
+  },
+  {
+    "pattern": [{ "pathname": "/foo/bar" }],
+    "inputs": [{ "hostname": "example.com", "pathname": "/foo/bar/baz" }],
+    "expected_match": null
+  },
+  {
+    "pattern": [{ "pathname": "/foo/bar" }],
+    "inputs": [{ "pathname": "/foo/bar", "baseURL": "https://example.com" }],
+    "expected_match": {
+      "hostname": { "input": "example.com", "groups": { "0": "example.com" } },
+      "pathname": { "input": "/foo/bar", "groups": {} },
+      "protocol": { "input": "https", "groups": { "0": "https" } }
+    }
+  },
+  {
+    "pattern": [{ "pathname": "/foo/bar" }],
+    "inputs": [{ "pathname": "/foo/bar/baz",
+                 "baseURL": "https://example.com" }],
+    "expected_match": null
+  },
+  {
+    "pattern": [{ "pathname": "/foo/bar",
+                 "baseURL": "https://example.com?query#hash" }],
+    "inputs": [{ "pathname": "/foo/bar" }],
+    "expected_match": null
+  },
+  {
+    "pattern": [{ "pathname": "/foo/bar",
+                 "baseURL": "https://example.com?query#hash" }],
+    "inputs": [{ "hostname": "example.com", "pathname": "/foo/bar" }],
+    "expected_match": null
+  },
+  {
+    "pattern": [{ "pathname": "/foo/bar",
+                 "baseURL": "https://example.com?query#hash" }],
+    "inputs": [{ "protocol": "https", "hostname": "example.com",
+                 "pathname": "/foo/bar" }],
+    "exactly_empty_components": [ "username", "password", "port" ],
+    "expected_match": null
+  },
+  {
+    "pattern": [{ "pathname": "/foo/bar",
+                 "baseURL": "https://example.com" }],
+    "inputs": [{ "protocol": "https", "hostname": "example.com",
+                 "pathname": "/foo/bar" }],
+    "exactly_empty_components": [ "username", "password", "port", "search",
+                                  "hash" ],
+    "expected_match": {
+      "hostname": { "input": "example.com", "groups": {} },
+      "pathname": { "input": "/foo/bar", "groups": {} },
+      "protocol": { "input": "https", "groups": {} }
+    }
+  },
+  {
+    "pattern": [{ "pathname": "/foo/bar",
+                 "baseURL": "https://example.com" }],
+    "inputs": [{ "protocol": "https", "hostname": "example.com",
+                 "pathname": "/foo/bar/baz" }],
+    "expected_match": null
+  },
+  {
+    "pattern": [{ "pathname": "/foo/bar",
+                 "baseURL": "https://example.com?query#hash" }],
+    "inputs": [{ "protocol": "https", "hostname": "example.com",
+                 "pathname": "/foo/bar", "search": "otherquery",
+                 "hash": "otherhash" }],
+    "exactly_empty_components": [ "username", "password", "port" ],
+    "expected_match": null
+  },
+  {
+    "pattern": [{ "pathname": "/foo/bar",
+                 "baseURL": "https://example.com" }],
+    "inputs": [{ "protocol": "https", "hostname": "example.com",
+                 "pathname": "/foo/bar", "search": "otherquery",
+                 "hash": "otherhash" }],
+    "exactly_empty_components": [ "username", "password", "port", "search",
+                                  "hash" ],
+    "expected_match": null
+  },
+  {
+    "pattern": [{ "pathname": "/foo/bar",
+                 "baseURL": "https://example.com?otherquery#otherhash" }],
+    "inputs": [{ "protocol": "https", "hostname": "example.com",
+                 "pathname": "/foo/bar", "search": "otherquery",
+                 "hash": "otherhash" }],
+    "exactly_empty_components": [ "username", "password", "port" ],
+    "expected_match": {
+      "hash": { "input": "otherhash", "groups": {} },
+      "hostname": { "input": "example.com", "groups": {} },
+      "pathname": { "input": "/foo/bar", "groups": {} },
+      "protocol": { "input": "https", "groups": {} },
+      "search": { "input": "otherquery", "groups": {} }
+    }
+  },
+  {
+    "pattern": [{ "pathname": "/foo/bar",
+                 "baseURL": "https://example.com?query#hash" }],
+    "inputs": [ "https://example.com/foo/bar" ],
+    "exactly_empty_components": [ "username", "password", "port" ],
+    "expected_match": null
+  },
+  {
+    "pattern": [{ "pathname": "/foo/bar",
+                 "baseURL": "https://example.com?query#hash" }],
+    "inputs": [ "https://example.com/foo/bar?otherquery#otherhash" ],
+    "exactly_empty_components": [ "username", "password", "port" ],
+    "expected_match": null
+  },
+  {
+    "pattern": [{ "pathname": "/foo/bar",
+                 "baseURL": "https://example.com?query#hash" }],
+    "inputs": [ "https://example.com/foo/bar?query#hash" ],
+    "exactly_empty_components": [ "username", "password", "port" ],
+    "expected_match": {
+      "hash": { "input": "hash", "groups": {} },
+      "hostname": { "input": "example.com", "groups": {} },
+      "pathname": { "input": "/foo/bar", "groups": {} },
+      "protocol": { "input": "https", "groups": {} },
+      "search": { "input": "query", "groups": {} }
+    }
+  },
+  {
+    "pattern": [{ "pathname": "/foo/bar",
+                 "baseURL": "https://example.com?query#hash" }],
+    "inputs": [ "https://example.com/foo/bar/baz" ],
+    "expected_match": null
+  },
+  {
+    "pattern": [{ "pathname": "/foo/bar",
+                 "baseURL": "https://example.com?query#hash" }],
+    "inputs": [ "https://other.com/foo/bar" ],
+    "expected_match": null
+  },
+  {
+    "pattern": [{ "pathname": "/foo/bar",
+                 "baseURL": "https://example.com?query#hash" }],
+    "inputs": [ "http://other.com/foo/bar" ],
+    "expected_match": null
+  },
+  {
+    "pattern": [{ "pathname": "/foo/bar",
+                 "baseURL": "https://example.com?query#hash" }],
+    "inputs": [{ "pathname": "/foo/bar", "baseURL": "https://example.com" }],
+    "exactly_empty_components": [ "username", "password", "port" ],
+    "expected_match": null
+  },
+  {
+    "pattern": [{ "pathname": "/foo/bar",
+                 "baseURL": "https://example.com?query#hash" }],
+    "inputs": [{ "pathname": "/foo/bar",
+                 "baseURL": "https://example.com?query#hash" }],
+    "exactly_empty_components": [ "username", "password", "port" ],
+    "expected_match": {
+      "hash": { "input": "hash", "groups": {} },
+      "hostname": { "input": "example.com", "groups": {} },
+      "pathname": { "input": "/foo/bar", "groups": {} },
+      "protocol": { "input": "https", "groups": {} },
+      "search": { "input": "query", "groups": {} }
+    }
+  },
+  {
+    "pattern": [{ "pathname": "/foo/bar",
+                 "baseURL": "https://example.com?query#hash" }],
+    "inputs": [{ "pathname": "/foo/bar/baz",
+                 "baseURL": "https://example.com" }],
+    "expected_match": null
+  },
+  {
+    "pattern": [{ "pathname": "/foo/bar",
+                 "baseURL": "https://example.com?query#hash" }],
+    "inputs": [{ "pathname": "/foo/bar", "baseURL": "https://other.com" }],
+    "expected_match": null
+  },
+  {
+    "pattern": [{ "pathname": "/foo/bar",
+                 "baseURL": "https://example.com?query#hash" }],
+    "inputs": [{ "pathname": "/foo/bar", "baseURL": "http://example.com" }],
+    "expected_match": null
+  },
+  {
+    "pattern": [{ "pathname": "/foo/:bar" }],
+    "inputs": [{ "pathname": "/foo/bar" }],
+    "expected_match": {
+      "pathname": { "input": "/foo/bar", "groups": { "bar": "bar" } }
+    }
+  },
+  {
+    "pattern": [{ "pathname": "/foo/([^\\/]+?)" }],
+    "inputs": [{ "pathname": "/foo/bar" }],
+    "expected_match": {
+      "pathname": { "input": "/foo/bar", "groups": { "0": "bar" } }
+    }
+  },
+  {
+    "pattern": [{ "pathname": "/foo/:bar" }],
+    "inputs": [{ "pathname": "/foo/index.html" }],
+    "expected_match": {
+      "pathname": { "input": "/foo/index.html", "groups": { "bar": "index.html" } }
+    }
+  },
+  {
+    "pattern": [{ "pathname": "/foo/:bar" }],
+    "inputs": [{ "pathname": "/foo/bar/" }],
+    "expected_match": null
+  },
+  {
+    "pattern": [{ "pathname": "/foo/:bar" }],
+    "inputs": [{ "pathname": "/foo/" }],
+    "expected_match": null
+  },
+  {
+    "pattern": [{ "pathname": "/foo/(.*)" }],
+    "inputs": [{ "pathname": "/foo/bar" }],
+    "expected_obj": {
+      "pathname": "/foo/*"
+    },
+    "expected_match": {
+      "pathname": { "input": "/foo/bar", "groups": { "0": "bar" } }
+    }
+  },
+  {
+    "pattern": [{ "pathname": "/foo/*" }],
+    "inputs": [{ "pathname": "/foo/bar" }],
+    "expected_match": {
+      "pathname": { "input": "/foo/bar", "groups": { "0": "bar" } }
+    }
+  },
+  {
+    "pattern": [{ "pathname": "/foo/(.*)" }],
+    "inputs": [{ "pathname": "/foo/bar/baz" }],
+    "expected_obj": {
+      "pathname": "/foo/*"
+    },
+    "expected_match": {
+      "pathname": { "input": "/foo/bar/baz", "groups": { "0": "bar/baz" } }
+    }
+  },
+  {
+    "pattern": [{ "pathname": "/foo/*" }],
+    "inputs": [{ "pathname": "/foo/bar/baz" }],
+    "expected_match": {
+      "pathname": { "input": "/foo/bar/baz", "groups": { "0": "bar/baz" } }
+    }
+  },
+  {
+    "pattern": [{ "pathname": "/foo/(.*)" }],
+    "inputs": [{ "pathname": "/foo/" }],
+    "expected_obj": {
+      "pathname": "/foo/*"
+    },
+    "expected_match": {
+      "pathname": { "input": "/foo/", "groups": { "0": "" } }
+    }
+  },
+  {
+    "pattern": [{ "pathname": "/foo/*" }],
+    "inputs": [{ "pathname": "/foo/" }],
+    "expected_match": {
+      "pathname": { "input": "/foo/", "groups": { "0": "" } }
+    }
+  },
+  {
+    "pattern": [{ "pathname": "/foo/(.*)" }],
+    "inputs": [{ "pathname": "/foo" }],
+    "expected_obj": {
+      "pathname": "/foo/*"
+    },
+    "expected_match": null
+  },
+  {
+    "pattern": [{ "pathname": "/foo/*" }],
+    "inputs": [{ "pathname": "/foo" }],
+    "expected_match": null
+  },
+  {
+    "pattern": [{ "pathname": "/foo/:bar(.*)" }],
+    "inputs": [{ "pathname": "/foo/bar" }],
+    "expected_match": {
+      "pathname": { "input": "/foo/bar", "groups": { "bar": "bar" } }
+    }
+  },
+  {
+    "pattern": [{ "pathname": "/foo/:bar(.*)" }],
+    "inputs": [{ "pathname": "/foo/bar/baz" }],
+    "expected_match": {
+      "pathname": { "input": "/foo/bar/baz", "groups": { "bar": "bar/baz" } }
+    }
+  },
+  {
+    "pattern": [{ "pathname": "/foo/:bar(.*)" }],
+    "inputs": [{ "pathname": "/foo/" }],
+    "expected_match": {
+      "pathname": { "input": "/foo/", "groups": { "bar": "" } }
+    }
+  },
+  {
+    "pattern": [{ "pathname": "/foo/:bar(.*)" }],
+    "inputs": [{ "pathname": "/foo" }],
+    "expected_match": null
+  },
+  {
+    "pattern": [{ "pathname": "/foo/:bar?" }],
+    "inputs": [{ "pathname": "/foo/bar" }],
+    "expected_match": {
+      "pathname": { "input": "/foo/bar", "groups": { "bar": "bar" } }
+    }
+  },
+  {
+    "pattern": [{ "pathname": "/foo/:bar?" }],
+    "inputs": [{ "pathname": "/foo" }],
+    "//": "The `null` below is translated to undefined in the test harness.",
+    "expected_match": {
+      "pathname": { "input": "/foo", "groups": { "bar": null } }
+    }
+  },
+  {
+    "pattern": [{ "pathname": "/foo/:bar?" }],
+    "inputs": [{ "pathname": "/foo/" }],
+    "expected_match": null
+  },
+  {
+    "pattern": [{ "pathname": "/foo/:bar?" }],
+    "inputs": [{ "pathname": "/foobar" }],
+    "expected_match": null
+  },
+  {
+    "pattern": [{ "pathname": "/foo/:bar?" }],
+    "inputs": [{ "pathname": "/foo/bar/baz" }],
+    "expected_match": null
+  },
+  {
+    "pattern": [{ "pathname": "/foo/:bar+" }],
+    "inputs": [{ "pathname": "/foo/bar" }],
+    "expected_match": {
+      "pathname": { "input": "/foo/bar", "groups": { "bar": "bar" } }
+    }
+  },
+  {
+    "pattern": [{ "pathname": "/foo/:bar+" }],
+    "inputs": [{ "pathname": "/foo/bar/baz" }],
+    "expected_match": {
+      "pathname": { "input": "/foo/bar/baz", "groups": { "bar": "bar/baz" } }
+    }
+  },
+  {
+    "pattern": [{ "pathname": "/foo/:bar+" }],
+    "inputs": [{ "pathname": "/foo" }],
+    "expected_match": null
+  },
+  {
+    "pattern": [{ "pathname": "/foo/:bar+" }],
+    "inputs": [{ "pathname": "/foo/" }],
+    "expected_match": null
+  },
+  {
+    "pattern": [{ "pathname": "/foo/:bar+" }],
+    "inputs": [{ "pathname": "/foobar" }],
+    "expected_match": null
+  },
+  {
+    "pattern": [{ "pathname": "/foo/:bar*" }],
+    "inputs": [{ "pathname": "/foo/bar" }],
+    "expected_match": {
+      "pathname": { "input": "/foo/bar", "groups": { "bar": "bar" } }
+    }
+  },
+  {
+    "pattern": [{ "pathname": "/foo/:bar*" }],
+    "inputs": [{ "pathname": "/foo/bar/baz" }],
+    "expected_match": {
+      "pathname": { "input": "/foo/bar/baz", "groups": { "bar": "bar/baz" } }
+    }
+  },
+  {
+    "pattern": [{ "pathname": "/foo/:bar*" }],
+    "inputs": [{ "pathname": "/foo" }],
+    "//": "The `null` below is translated to undefined in the test harness.",
+    "expected_match": {
+      "pathname": { "input": "/foo", "groups": { "bar": null } }
+    }
+  },
+  {
+    "pattern": [{ "pathname": "/foo/:bar*" }],
+    "inputs": [{ "pathname": "/foo/" }],
+    "expected_match": null
+  },
+  {
+    "pattern": [{ "pathname": "/foo/:bar*" }],
+    "inputs": [{ "pathname": "/foobar" }],
+    "expected_match": null
+  },
+  {
+    "pattern": [{ "pathname": "/foo/(.*)?" }],
+    "inputs": [{ "pathname": "/foo/bar" }],
+    "expected_obj": {
+      "pathname": "/foo/*?"
+    },
+    "expected_match": {
+      "pathname": { "input": "/foo/bar", "groups": { "0": "bar" } }
+    }
+  },
+  {
+    "pattern": [{ "pathname": "/foo/*?" }],
+    "inputs": [{ "pathname": "/foo/bar" }],
+    "expected_match": {
+      "pathname": { "input": "/foo/bar", "groups": { "0": "bar" } }
+    }
+  },
+  {
+    "pattern": [{ "pathname": "/foo/(.*)?" }],
+    "inputs": [{ "pathname": "/foo/bar/baz" }],
+    "expected_obj": {
+      "pathname": "/foo/*?"
+    },
+    "expected_match": {
+      "pathname": { "input": "/foo/bar/baz", "groups": { "0": "bar/baz" } }
+    }
+  },
+  {
+    "pattern": [{ "pathname": "/foo/*?" }],
+    "inputs": [{ "pathname": "/foo/bar/baz" }],
+    "expected_match": {
+      "pathname": { "input": "/foo/bar/baz", "groups": { "0": "bar/baz" } }
+    }
+  },
+  {
+    "pattern": [{ "pathname": "/foo/(.*)?" }],
+    "inputs": [{ "pathname": "/foo" }],
+    "expected_obj": {
+      "pathname": "/foo/*?"
+    },
+    "//": "The `null` below is translated to undefined in the test harness.",
+    "expected_match": {
+      "pathname": { "input": "/foo", "groups": { "0": null } }
+    }
+  },
+  {
+    "pattern": [{ "pathname": "/foo/*?" }],
+    "inputs": [{ "pathname": "/foo" }],
+    "//": "The `null` below is translated to undefined in the test harness.",
+    "expected_match": {
+      "pathname": { "input": "/foo", "groups": { "0": null } }
+    }
+  },
+  {
+    "pattern": [{ "pathname": "/foo/(.*)?" }],
+    "inputs": [{ "pathname": "/foo/" }],
+    "expected_obj": {
+      "pathname": "/foo/*?"
+    },
+    "expected_match": {
+      "pathname": { "input": "/foo/", "groups": { "0": "" } }
+    }
+  },
+  {
+    "pattern": [{ "pathname": "/foo/*?" }],
+    "inputs": [{ "pathname": "/foo/" }],
+    "expected_match": {
+      "pathname": { "input": "/foo/", "groups": { "0": "" } }
+    }
+  },
+  {
+    "pattern": [{ "pathname": "/foo/(.*)?" }],
+    "inputs": [{ "pathname": "/foobar" }],
+    "expected_obj": {
+      "pathname": "/foo/*?"
+    },
+    "expected_match": null
+  },
+  {
+    "pattern": [{ "pathname": "/foo/*?" }],
+    "inputs": [{ "pathname": "/foobar" }],
+    "expected_match": null
+  },
+  {
+    "pattern": [{ "pathname": "/foo/(.*)?" }],
+    "inputs": [{ "pathname": "/fo" }],
+    "expected_obj": {
+      "pathname": "/foo/*?"
+    },
+    "expected_match": null
+  },
+  {
+    "pattern": [{ "pathname": "/foo/*?" }],
+    "inputs": [{ "pathname": "/fo" }],
+    "expected_match": null
+  },
+  {
+    "pattern": [{ "pathname": "/foo/(.*)+" }],
+    "inputs": [{ "pathname": "/foo/bar" }],
+    "expected_obj": {
+      "pathname": "/foo/*+"
+    },
+    "expected_match": {
+      "pathname": { "input": "/foo/bar", "groups": { "0": "bar" } }
+    }
+  },
+  {
+    "pattern": [{ "pathname": "/foo/*+" }],
+    "inputs": [{ "pathname": "/foo/bar" }],
+    "expected_match": {
+      "pathname": { "input": "/foo/bar", "groups": { "0": "bar" } }
+    }
+  },
+  {
+    "pattern": [{ "pathname": "/foo/(.*)+" }],
+    "inputs": [{ "pathname": "/foo/bar/baz" }],
+    "expected_obj": {
+      "pathname": "/foo/*+"
+    },
+    "expected_match": {
+      "pathname": { "input": "/foo/bar/baz", "groups": { "0": "bar/baz" } }
+    }
+  },
+  {
+    "pattern": [{ "pathname": "/foo/*+" }],
+    "inputs": [{ "pathname": "/foo/bar/baz" }],
+    "expected_match": {
+      "pathname": { "input": "/foo/bar/baz", "groups": { "0": "bar/baz" } }
+    }
+  },
+  {
+    "pattern": [{ "pathname": "/foo/(.*)+" }],
+    "inputs": [{ "pathname": "/foo" }],
+    "expected_obj": {
+      "pathname": "/foo/*+"
+    },
+    "expected_match": null
+  },
+  {
+    "pattern": [{ "pathname": "/foo/*+" }],
+    "inputs": [{ "pathname": "/foo" }],
+    "expected_match": null
+  },
+  {
+    "pattern": [{ "pathname": "/foo/(.*)+" }],
+    "inputs": [{ "pathname": "/foo/" }],
+    "expected_obj": {
+      "pathname": "/foo/*+"
+    },
+    "expected_match": {
+      "pathname": { "input": "/foo/", "groups": { "0": "" } }
+    }
+  },
+  {
+    "pattern": [{ "pathname": "/foo/*+" }],
+    "inputs": [{ "pathname": "/foo/" }],
+    "expected_match": {
+      "pathname": { "input": "/foo/", "groups": { "0": "" } }
+    }
+  },
+  {
+    "pattern": [{ "pathname": "/foo/(.*)+" }],
+    "inputs": [{ "pathname": "/foobar" }],
+    "expected_obj": {
+      "pathname": "/foo/*+"
+    },
+    "expected_match": null
+  },
+  {
+    "pattern": [{ "pathname": "/foo/*+" }],
+    "inputs": [{ "pathname": "/foobar" }],
+    "expected_match": null
+  },
+  {
+    "pattern": [{ "pathname": "/foo/(.*)+" }],
+    "inputs": [{ "pathname": "/fo" }],
+    "expected_obj": {
+      "pathname": "/foo/*+"
+    },
+    "expected_match": null
+  },
+  {
+    "pattern": [{ "pathname": "/foo/*+" }],
+    "inputs": [{ "pathname": "/fo" }],
+    "expected_match": null
+  },
+  {
+    "pattern": [{ "pathname": "/foo/(.*)*" }],
+    "inputs": [{ "pathname": "/foo/bar" }],
+    "expected_obj": {
+      "pathname": "/foo/**"
+    },
+    "expected_match": {
+      "pathname": { "input": "/foo/bar", "groups": { "0": "bar" } }
+    }
+  },
+  {
+    "pattern": [{ "pathname": "/foo/**" }],
+    "inputs": [{ "pathname": "/foo/bar" }],
+    "expected_match": {
+      "pathname": { "input": "/foo/bar", "groups": { "0": "bar" } }
+    }
+  },
+  {
+    "pattern": [{ "pathname": "/foo/(.*)*" }],
+    "inputs": [{ "pathname": "/foo/bar/baz" }],
+    "expected_obj": {
+      "pathname": "/foo/**"
+    },
+    "expected_match": {
+      "pathname": { "input": "/foo/bar/baz", "groups": { "0": "bar/baz" } }
+    }
+  },
+  {
+    "pattern": [{ "pathname": "/foo/**" }],
+    "inputs": [{ "pathname": "/foo/bar/baz" }],
+    "expected_match": {
+      "pathname": { "input": "/foo/bar/baz", "groups": { "0": "bar/baz" } }
+    }
+  },
+  {
+    "pattern": [{ "pathname": "/foo/(.*)*" }],
+    "inputs": [{ "pathname": "/foo" }],
+    "expected_obj": {
+      "pathname": "/foo/**"
+    },
+    "//": "The `null` below is translated to undefined in the test harness.",
+    "expected_match": {
+      "pathname": { "input": "/foo", "groups": { "0": null } }
+    }
+  },
+  {
+    "pattern": [{ "pathname": "/foo/**" }],
+    "inputs": [{ "pathname": "/foo" }],
+    "//": "The `null` below is translated to undefined in the test harness.",
+    "expected_match": {
+      "pathname": { "input": "/foo", "groups": { "0": null } }
+    }
+  },
+  {
+    "pattern": [{ "pathname": "/foo/(.*)*" }],
+    "inputs": [{ "pathname": "/foo/" }],
+    "expected_obj": {
+      "pathname": "/foo/**"
+    },
+    "expected_match": {
+      "pathname": { "input": "/foo/", "groups": { "0": "" } }
+    }
+  },
+  {
+    "pattern": [{ "pathname": "/foo/**" }],
+    "inputs": [{ "pathname": "/foo/" }],
+    "expected_match": {
+      "pathname": { "input": "/foo/", "groups": { "0": "" } }
+    }
+  },
+  {
+    "pattern": [{ "pathname": "/foo/(.*)*" }],
+    "inputs": [{ "pathname": "/foobar" }],
+    "expected_obj": {
+      "pathname": "/foo/**"
+    },
+    "expected_match": null
+  },
+  {
+    "pattern": [{ "pathname": "/foo/**" }],
+    "inputs": [{ "pathname": "/foobar" }],
+    "expected_match": null
+  },
+  {
+    "pattern": [{ "pathname": "/foo/(.*)*" }],
+    "inputs": [{ "pathname": "/fo" }],
+    "expected_obj": {
+      "pathname": "/foo/**"
+    },
+    "expected_match": null
+  },
+  {
+    "pattern": [{ "pathname": "/foo/**" }],
+    "inputs": [{ "pathname": "/fo" }],
+    "expected_match": null
+  },
+  {
+    "pattern": [{ "pathname": "/foo{/bar}" }],
+    "inputs": [{ "pathname": "/foo/bar" }],
+    "expected_obj": {
+      "pathname": "/foo/bar"
+    },
+    "expected_match": {
+      "pathname": { "input": "/foo/bar", "groups": {} }
+    }
+  },
+  {
+    "pattern": [{ "pathname": "/foo{/bar}" }],
+    "inputs": [{ "pathname": "/foo/bar/baz" }],
+    "expected_obj": {
+      "pathname": "/foo/bar"
+    },
+    "expected_match": null
+  },
+  {
+    "pattern": [{ "pathname": "/foo{/bar}" }],
+    "inputs": [{ "pathname": "/foo" }],
+    "expected_obj": {
+      "pathname": "/foo/bar"
+    },
+    "expected_match": null
+  },
+  {
+    "pattern": [{ "pathname": "/foo{/bar}" }],
+    "inputs": [{ "pathname": "/foo/" }],
+    "expected_obj": {
+      "pathname": "/foo/bar"
+    },
+    "expected_match": null
+  },
+  {
+    "pattern": [{ "pathname": "/foo{/bar}?" }],
+    "inputs": [{ "pathname": "/foo/bar" }],
+    "expected_match": {
+      "pathname": { "input": "/foo/bar", "groups": {} }
+    }
+  },
+  {
+    "pattern": [{ "pathname": "/foo{/bar}?" }],
+    "inputs": [{ "pathname": "/foo/bar/baz" }],
+    "expected_match": null
+  },
+  {
+    "pattern": [{ "pathname": "/foo{/bar}?" }],
+    "inputs": [{ "pathname": "/foo" }],
+    "expected_match": {
+      "pathname": { "input": "/foo", "groups": {} }
+    }
+  },
+  {
+    "pattern": [{ "pathname": "/foo{/bar}?" }],
+    "inputs": [{ "pathname": "/foo/" }],
+    "expected_match": null
+  },
+  {
+    "pattern": [{ "pathname": "/foo{/bar}+" }],
+    "inputs": [{ "pathname": "/foo/bar" }],
+    "expected_match": {
+      "pathname": { "input": "/foo/bar", "groups": {} }
+    }
+  },
+  {
+    "pattern": [{ "pathname": "/foo{/bar}+" }],
+    "inputs": [{ "pathname": "/foo/bar/bar" }],
+    "expected_match": {
+      "pathname": { "input": "/foo/bar/bar", "groups": {} }
+    }
+  },
+  {
+    "pattern": [{ "pathname": "/foo{/bar}+" }],
+    "inputs": [{ "pathname": "/foo/bar/baz" }],
+    "expected_match": null
+  },
+  {
+    "pattern": [{ "pathname": "/foo{/bar}+" }],
+    "inputs": [{ "pathname": "/foo" }],
+    "expected_match": null
+  },
+  {
+    "pattern": [{ "pathname": "/foo{/bar}+" }],
+    "inputs": [{ "pathname": "/foo/" }],
+    "expected_match": null
+  },
+  {
+    "pattern": [{ "pathname": "/foo{/bar}*" }],
+    "inputs": [{ "pathname": "/foo/bar" }],
+    "expected_match": {
+      "pathname": { "input": "/foo/bar", "groups": {} }
+    }
+  },
+  {
+    "pattern": [{ "pathname": "/foo{/bar}*" }],
+    "inputs": [{ "pathname": "/foo/bar/bar" }],
+    "expected_match": {
+      "pathname": { "input": "/foo/bar/bar", "groups": {} }
+    }
+  },
+  {
+    "pattern": [{ "pathname": "/foo{/bar}*" }],
+    "inputs": [{ "pathname": "/foo/bar/baz" }],
+    "expected_match": null
+  },
+  {
+    "pattern": [{ "pathname": "/foo{/bar}*" }],
+    "inputs": [{ "pathname": "/foo" }],
+    "expected_match": {
+      "pathname": { "input": "/foo", "groups": {} }
+    }
+  },
+  {
+    "pattern": [{ "pathname": "/foo{/bar}*" }],
+    "inputs": [{ "pathname": "/foo/" }],
+    "expected_match": null
+  },
+  {
+    "pattern": [{ "protocol": "(café)" }],
+    "expected_obj": "error"
+  },
+  {
+    "pattern": [{ "username": "(café)" }],
+    "expected_obj": "error"
+  },
+  {
+    "pattern": [{ "password": "(café)" }],
+    "expected_obj": "error"
+  },
+  {
+    "pattern": [{ "hostname": "(café)" }],
+    "expected_obj": "error"
+  },
+  {
+    "pattern": [{ "pathname": "(café)" }],
+    "expected_obj": "error"
+  },
+  {
+    "pattern": [{ "search": "(café)" }],
+    "expected_obj": "error"
+  },
+  {
+    "pattern": [{ "hash": "(café)" }],
+    "expected_obj": "error"
+  },
+  {
+    "pattern": [{ "protocol": ":café" }],
+    "inputs": [{ "protocol": "foo" }],
+    "expected_match": {
+      "protocol": { "input": "foo", "groups": { "café": "foo" } }
+    }
+  },
+  {
+    "pattern": [{ "username": ":café" }],
+    "inputs": [{ "username": "foo" }],
+    "expected_match": {
+      "username": { "input": "foo", "groups": { "café": "foo" } }
+    }
+  },
+  {
+    "pattern": [{ "password": ":café" }],
+    "inputs": [{ "password": "foo" }],
+    "expected_match": {
+      "password": { "input": "foo", "groups": { "café": "foo" } }
+    }
+  },
+  {
+    "pattern": [{ "hostname": ":café" }],
+    "inputs": [{ "hostname": "foo" }],
+    "expected_match": {
+      "hostname": { "input": "foo", "groups": { "café": "foo" } }
+    }
+  },
+  {
+    "pattern": [{ "pathname": "/:café" }],
+    "inputs": [{ "pathname": "/foo" }],
+    "expected_match": {
+      "pathname": { "input": "/foo", "groups": { "café": "foo" } }
+    }
+  },
+  {
+    "pattern": [{ "search": ":café" }],
+    "inputs": [{ "search": "foo" }],
+    "expected_match": {
+      "search": { "input": "foo", "groups": { "café": "foo" } }
+    }
+  },
+  {
+    "pattern": [{ "hash": ":café" }],
+    "inputs": [{ "hash": "foo" }],
+    "expected_match": {
+      "hash": { "input": "foo", "groups": { "café": "foo" } }
+    }
+  },
+  {
+    "pattern": [{ "protocol": ":\u2118" }],
+    "inputs": [{ "protocol": "foo" }],
+    "expected_match": {
+      "protocol": { "input": "foo", "groups": { "\u2118": "foo" } }
+    }
+  },
+  {
+    "pattern": [{ "username": ":\u2118" }],
+    "inputs": [{ "username": "foo" }],
+    "expected_match": {
+      "username": { "input": "foo", "groups": { "\u2118": "foo" } }
+    }
+  },
+  {
+    "pattern": [{ "password": ":\u2118" }],
+    "inputs": [{ "password": "foo" }],
+    "expected_match": {
+      "password": { "input": "foo", "groups": { "\u2118": "foo" } }
+    }
+  },
+  {
+    "pattern": [{ "hostname": ":\u2118" }],
+    "inputs": [{ "hostname": "foo" }],
+    "expected_match": {
+      "hostname": { "input": "foo", "groups": { "\u2118": "foo" } }
+    }
+  },
+  {
+    "pattern": [{ "pathname": "/:\u2118" }],
+    "inputs": [{ "pathname": "/foo" }],
+    "expected_match": {
+      "pathname": { "input": "/foo", "groups": { "\u2118": "foo" } }
+    }
+  },
+  {
+    "pattern": [{ "search": ":\u2118" }],
+    "inputs": [{ "search": "foo" }],
+    "expected_match": {
+      "search": { "input": "foo", "groups": { "\u2118": "foo" } }
+    }
+  },
+  {
+    "pattern": [{ "hash": ":\u2118" }],
+    "inputs": [{ "hash": "foo" }],
+    "expected_match": {
+      "hash": { "input": "foo", "groups": { "\u2118": "foo" } }
+    }
+  },
+  {
+    "pattern": [{ "protocol": ":\u3400" }],
+    "inputs": [{ "protocol": "foo" }],
+    "expected_match": {
+      "protocol": { "input": "foo", "groups": { "\u3400": "foo" } }
+    }
+  },
+  {
+    "pattern": [{ "username": ":\u3400" }],
+    "inputs": [{ "username": "foo" }],
+    "expected_match": {
+      "username": { "input": "foo", "groups": { "\u3400": "foo" } }
+    }
+  },
+  {
+    "pattern": [{ "password": ":\u3400" }],
+    "inputs": [{ "password": "foo" }],
+    "expected_match": {
+      "password": { "input": "foo", "groups": { "\u3400": "foo" } }
+    }
+  },
+  {
+    "pattern": [{ "hostname": ":\u3400" }],
+    "inputs": [{ "hostname": "foo" }],
+    "expected_match": {
+      "hostname": { "input": "foo", "groups": { "\u3400": "foo" } }
+    }
+  },
+  {
+    "pattern": [{ "pathname": "/:\u3400" }],
+    "inputs": [{ "pathname": "/foo" }],
+    "expected_match": {
+      "pathname": { "input": "/foo", "groups": { "\u3400": "foo" } }
+    }
+  },
+  {
+    "pattern": [{ "search": ":\u3400" }],
+    "inputs": [{ "search": "foo" }],
+    "expected_match": {
+      "search": { "input": "foo", "groups": { "\u3400": "foo" } }
+    }
+  },
+  {
+    "pattern": [{ "hash": ":\u3400" }],
+    "inputs": [{ "hash": "foo" }],
+    "expected_match": {
+      "hash": { "input": "foo", "groups": { "\u3400": "foo" } }
+    }
+  },
+  {
+    "pattern": [{ "protocol": "(.*)" }],
+    "inputs": [{ "protocol" : "café" }],
+    "expected_obj": {
+      "protocol": "*"
+    },
+    "expected_match": null
+  },
+  {
+    "pattern": [{ "protocol": "(.*)" }],
+    "inputs": [{ "protocol": "cafe" }],
+    "expected_obj": {
+      "protocol": "*"
+    },
+    "expected_match": {
+      "protocol": { "input": "cafe", "groups": { "0": "cafe" }}
+    }
+  },
+  {
+    "pattern": [{ "protocol": "foo-bar" }],
+    "inputs": [{ "protocol": "foo-bar" }],
+    "expected_match": {
+      "protocol": { "input": "foo-bar", "groups": {} }
+    }
+  },
+  {
+    "pattern": [{ "username": "caf%C3%A9" }],
+    "inputs": [{ "username" : "café" }],
+    "expected_match": {
+      "username": { "input": "caf%C3%A9", "groups": {}}
+    }
+  },
+  {
+    "pattern": [{ "username": "café" }],
+    "inputs": [{ "username" : "café" }],
+    "expected_obj": {
+      "username": "caf%C3%A9"
+    },
+    "expected_match": {
+      "username": { "input": "caf%C3%A9", "groups": {}}
+    }
+  },
+  {
+    "pattern": [{ "username": "caf%c3%a9" }],
+    "inputs": [{ "username" : "café" }],
+    "expected_match": null
+  },
+  {
+    "pattern": [{ "password": "caf%C3%A9" }],
+    "inputs": [{ "password" : "café" }],
+    "expected_match": {
+      "password": { "input": "caf%C3%A9", "groups": {}}
+    }
+  },
+  {
+    "pattern": [{ "password": "café" }],
+    "inputs": [{ "password" : "café" }],
+    "expected_obj": {
+      "password": "caf%C3%A9"
+    },
+    "expected_match": {
+      "password": { "input": "caf%C3%A9", "groups": {}}
+    }
+  },
+  {
+    "pattern": [{ "password": "caf%c3%a9" }],
+    "inputs": [{ "password" : "café" }],
+    "expected_match": null
+  },
+  {
+    "pattern": [{ "hostname": "xn--caf-dma.com" }],
+    "inputs": [{ "hostname" : "café.com" }],
+    "expected_match": {
+      "hostname": { "input": "xn--caf-dma.com", "groups": {}}
+    }
+  },
+  {
+    "pattern": [{ "hostname": "café.com" }],
+    "inputs": [{ "hostname" : "café.com" }],
+    "expected_obj": {
+      "hostname": "xn--caf-dma.com"
+    },
+    "expected_match": {
+      "hostname": { "input": "xn--caf-dma.com", "groups": {}}
+    }
+  },
+  {
+    "pattern": [{ "port": "" }],
+    "inputs": [{ "protocol": "http", "port": "80" }],
+    "exactly_empty_components": [ "port" ],
+    "expected_match": {
+      "protocol": { "input": "http", "groups": { "0": "http" }}
+    }
+  },
+  {
+    "pattern": [{ "protocol": "http", "port": "80" }],
+    "inputs": [{ "protocol": "http", "port": "80" }],
+    "exactly_empty_components": [ "port" ],
+    "expected_match": {
+      "protocol": { "input": "http", "groups": {}}
+    }
+  },
+  {
+    "pattern": [{ "protocol": "http", "port": "80{20}?" }],
+    "inputs": [{ "protocol": "http", "port": "80" }],
+    "expected_match": null
+  },
+  {
+    "pattern": [{ "protocol": "http", "port": "80 " }],
+    "inputs": [{ "protocol": "http", "port": "80" }],
+    "expected_obj": "error"
+  },
+  {
+    "pattern": [{ "port": "80" }],
+    "inputs": [{ "protocol": "http", "port": "80" }],
+    "expected_match": null
+  },
+  {
+    "pattern": [{ "protocol": "http{s}?", "port": "80" }],
+    "inputs": [{ "protocol": "http", "port": "80" }],
+    "expected_match": null
+  },
+  {
+    "pattern": [{ "port": "80" }],
+    "inputs": [{ "port": "80" }],
+    "expected_match": {
+      "port": { "input": "80", "groups": {}}
+    }
+  },
+  {
+    "pattern": [{ "port": "(.*)" }],
+    "inputs": [{ "port": "invalid80" }],
+    "expected_obj": {
+      "port": "*"
+    },
+    "expected_match": null
+  },
+  {
+    "pattern": [{ "pathname": "/foo/bar" }],
+    "inputs": [{ "pathname": "/foo/./bar" }],
+    "expected_match": {
+      "pathname": { "input": "/foo/bar", "groups": {}}
+    }
+  },
+  {
+    "pattern": [{ "pathname": "/foo/baz" }],
+    "inputs": [{ "pathname": "/foo/bar/../baz" }],
+    "expected_match": {
+      "pathname": { "input": "/foo/baz", "groups": {}}
+    }
+  },
+  {
+    "pattern": [{ "pathname": "/caf%C3%A9" }],
+    "inputs": [{ "pathname": "/café" }],
+    "expected_match": {
+      "pathname": { "input": "/caf%C3%A9", "groups": {}}
+    }
+  },
+  {
+    "pattern": [{ "pathname": "/café" }],
+    "inputs": [{ "pathname": "/café" }],
+    "expected_obj": {
+      "pathname": "/caf%C3%A9"
+    },
+    "expected_match": {
+      "pathname": { "input": "/caf%C3%A9", "groups": {}}
+    }
+  },
+  {
+    "pattern": [{ "pathname": "/caf%c3%a9" }],
+    "inputs": [{ "pathname": "/café" }],
+    "expected_match": null
+  },
+  {
+    "pattern": [{ "pathname": "/foo/bar" }],
+    "inputs": [{ "pathname": "foo/bar" }],
+    "expected_match": null
+  },
+  {
+    "pattern": [{ "pathname": "/foo/bar" }],
+    "inputs": [{ "pathname": "foo/bar", "baseURL": "https://example.com" }],
+    "expected_match": {
+      "protocol": { "input": "https", "groups": { "0": "https" }},
+      "hostname": { "input": "example.com", "groups": { "0": "example.com" }},
+      "pathname": { "input": "/foo/bar", "groups": {}}
+    }
+  },
+  {
+    "pattern": [{ "pathname": "/foo/../bar" }],
+    "inputs": [{ "pathname": "/bar" }],
+    "expected_obj": {
+      "pathname": "/bar"
+    },
+    "expected_match": {
+      "pathname": { "input": "/bar", "groups": {}}
+    }
+  },
+  {
+    "pattern": [{ "pathname": "./foo/bar", "baseURL": "https://example.com" }],
+    "inputs": [{ "pathname": "foo/bar", "baseURL": "https://example.com" }],
+    "exactly_empty_components": [ "username", "password", "port", "search",
+                                  "hash" ],
+    "expected_obj": {
+      "pathname": "/foo/bar"
+    },
+    "expected_match": {
+      "protocol": { "input": "https", "groups": {}},
+      "hostname": { "input": "example.com", "groups": {}},
+      "pathname": { "input": "/foo/bar", "groups": {}}
+    }
+  },
+  {
+    "pattern": [{ "pathname": "", "baseURL": "https://example.com" }],
+    "inputs": [{ "pathname": "/", "baseURL": "https://example.com" }],
+    "exactly_empty_components": [ "username", "password", "port", "search",
+                                  "hash" ],
+    "expected_obj": {
+      "pathname": "/"
+    },
+    "expected_match": {
+      "protocol": { "input": "https", "groups": {}},
+      "hostname": { "input": "example.com", "groups": {}},
+      "pathname": { "input": "/", "groups": {}}
+    }
+  },
+  {
+    "pattern": [{ "pathname": "{/bar}", "baseURL": "https://example.com/foo/" }],
+    "inputs": [{ "pathname": "./bar", "baseURL": "https://example.com/foo/" }],
+    "exactly_empty_components": [ "username", "password", "port", "search",
+                                  "hash" ],
+    "expected_obj": {
+      "pathname": "/bar"
+    },
+    "expected_match": null
+  },
+  {
+    "pattern": [{ "pathname": "\\/bar", "baseURL": "https://example.com/foo/" }],
+    "inputs": [{ "pathname": "./bar", "baseURL": "https://example.com/foo/" }],
+    "exactly_empty_components": [ "username", "password", "port", "search",
+                                  "hash" ],
+    "expected_obj": {
+      "pathname": "/bar"
+    },
+    "expected_match": null
+  },
+  {
+    "pattern": [{ "pathname": "b", "baseURL": "https://example.com/foo/" }],
+    "inputs": [{ "pathname": "./b", "baseURL": "https://example.com/foo/" }],
+    "exactly_empty_components": [ "username", "password", "port", "search",
+                                  "hash" ],
+    "expected_obj": {
+      "pathname": "/foo/b"
+    },
+    "expected_match": {
+      "protocol": { "input": "https", "groups": {}},
+      "hostname": { "input": "example.com", "groups": {}},
+      "pathname": { "input": "/foo/b", "groups": {}}
+    }
+  },
+  {
+    "pattern": [{ "pathname": "foo/bar" }],
+    "inputs": [ "https://example.com/foo/bar" ],
+    "expected_match": null
+  },
+  {
+    "pattern": [{ "pathname": "foo/bar", "baseURL": "https://example.com" }],
+    "inputs": [ "https://example.com/foo/bar" ],
+    "exactly_empty_components": [ "username", "password", "port", "search",
+                                  "hash" ],
+    "expected_obj": {
+      "pathname": "/foo/bar"
+    },
+    "expected_match": {
+      "protocol": { "input": "https", "groups": {}},
+      "hostname": { "input": "example.com", "groups": {}},
+      "pathname": { "input": "/foo/bar", "groups": {}}
+    }
+  },
+  {
+    "pattern": [{ "pathname": ":name.html", "baseURL": "https://example.com" }],
+    "inputs": [ "https://example.com/foo.html"] ,
+    "exactly_empty_components": [ "username", "password", "port", "search",
+                                  "hash" ],
+    "expected_obj": {
+      "pathname": "/:name.html"
+    },
+    "expected_match": {
+      "protocol": { "input": "https", "groups": {}},
+      "hostname": { "input": "example.com", "groups": {}},
+      "pathname": { "input": "/foo.html", "groups": { "name": "foo" }}
+    }
+  },
+  {
+    "pattern": [{ "search": "q=caf%C3%A9" }],
+    "inputs": [{ "search": "q=café" }],
+    "expected_match": {
+      "search": { "input": "q=caf%C3%A9", "groups": {}}
+    }
+  },
+  {
+    "pattern": [{ "search": "q=café" }],
+    "inputs": [{ "search": "q=café" }],
+    "expected_obj": {
+      "search": "q=caf%C3%A9"
+    },
+    "expected_match": {
+      "search": { "input": "q=caf%C3%A9", "groups": {}}
+    }
+  },
+  {
+    "pattern": [{ "search": "q=caf%c3%a9" }],
+    "inputs": [{ "search": "q=café" }],
+    "expected_match": null
+  },
+  {
+    "pattern": [{ "hash": "caf%C3%A9" }],
+    "inputs": [{ "hash": "café" }],
+    "expected_match": {
+      "hash": { "input": "caf%C3%A9", "groups": {}}
+    }
+  },
+  {
+    "pattern": [{ "hash": "café" }],
+    "inputs": [{ "hash": "café" }],
+    "expected_obj": {
+      "hash": "caf%C3%A9"
+    },
+    "expected_match": {
+      "hash": { "input": "caf%C3%A9", "groups": {}}
+    }
+  },
+  {
+    "pattern": [{ "hash": "caf%c3%a9" }],
+    "inputs": [{ "hash": "café" }],
+    "expected_match": null
+  },
+  {
+    "pattern": [{ "protocol": "about", "pathname": "(blank|sourcedoc)" }],
+    "inputs": [ "about:blank" ],
+    "expected_match": {
+      "protocol": { "input": "about", "groups": {}},
+      "pathname": { "input": "blank", "groups": { "0": "blank" }}
+    }
+  },
+  {
+    "pattern": [{ "protocol": "data", "pathname": ":number([0-9]+)" }],
+    "inputs": [ "data:8675309" ],
+    "expected_match": {
+      "protocol": { "input": "data", "groups": {}},
+      "pathname": { "input": "8675309", "groups": { "number": "8675309" }}
+    }
+  },
+  {
+    "pattern": [{ "pathname": "/(\\m)" }],
+    "expected_obj": "error"
+  },
+  {
+    "pattern": [{ "pathname": "/foo!" }],
+    "inputs": [{ "pathname": "/foo!" }],
+    "expected_match": {
+      "pathname": { "input": "/foo!", "groups": {}}
+    }
+  },
+  {
+    "pattern": [{ "pathname": "/foo\\:" }],
+    "inputs": [{ "pathname": "/foo:" }],
+    "expected_match": {
+      "pathname": { "input": "/foo:", "groups": {}}
+    }
+  },
+  {
+    "pattern": [{ "pathname": "/foo\\{" }],
+    "inputs": [{ "pathname": "/foo{" }],
+    "expected_obj": {
+      "pathname": "/foo%7B"
+    },
+    "expected_match": {
+      "pathname": { "input": "/foo%7B", "groups": {}}
+    }
+  },
+  {
+    "pattern": [{ "pathname": "/foo\\(" }],
+    "inputs": [{ "pathname": "/foo(" }],
+    "expected_match": {
+      "pathname": { "input": "/foo(", "groups": {}}
+    }
+  },
+  {
+    "pattern": [{ "protocol": "javascript", "pathname": "var x = 1;" }],
+    "inputs": [{ "protocol": "javascript", "pathname": "var x = 1;" }],
+    "expected_match": {
+      "protocol": { "input": "javascript", "groups": {}},
+      "pathname": { "input": "var x = 1;", "groups": {}}
+    }
+  },
+  {
+    "pattern": [{ "pathname": "var x = 1;" }],
+    "inputs": [{ "protocol": "javascript", "pathname": "var x = 1;" }],
+    "expected_obj": {
+      "pathname": "var%20x%20=%201;"
+    },
+    "expected_match": null
+  },
+  {
+    "pattern": [{ "protocol": "javascript", "pathname": "var x = 1;" }],
+    "inputs": [{ "baseURL": "javascript:var x = 1;" }],
+    "expected_match": {
+      "protocol": { "input": "javascript", "groups": {}},
+      "pathname": { "input": "var x = 1;", "groups": {}}
+    }
+  },
+  {
+    "pattern": [{ "protocol": "(data|javascript)", "pathname": "var x = 1;" }],
+    "inputs": [{ "protocol": "javascript", "pathname": "var x = 1;" }],
+    "expected_match": {
+      "protocol": { "input": "javascript", "groups": {"0": "javascript"}},
+      "pathname": { "input": "var x = 1;", "groups": {}}
+    }
+  },
+  {
+    "pattern": [{ "protocol": "(https|javascript)", "pathname": "var x = 1;" }],
+    "inputs": [{ "protocol": "javascript", "pathname": "var x = 1;" }],
+    "expected_obj": {
+      "pathname": "var%20x%20=%201;"
+    },
+    "expected_match": null
+  },
+  {
+    "pattern": [{ "pathname": "var x = 1;" }],
+    "inputs": [{ "pathname": "var x = 1;" }],
+    "expected_obj": {
+      "pathname": "var%20x%20=%201;"
+    },
+    "expected_match": {
+      "pathname": { "input": "var%20x%20=%201;", "groups": {}}
+    }
+  },
+  {
+    "pattern": [{ "pathname": "/foo/bar" }],
+    "inputs": [ "./foo/bar", "https://example.com" ],
+    "expected_match": {
+      "hostname": { "input": "example.com", "groups": { "0": "example.com" } },
+      "pathname": { "input": "/foo/bar", "groups": {} },
+      "protocol": { "input": "https", "groups": { "0": "https" } }
+    }
+  },
+  {
+    "pattern": [{ "pathname": "/foo/bar" }],
+    "inputs": [ { "pathname": "/foo/bar" }, "https://example.com" ],
+    "expected_match": "error"
+  },
+  {
+    "pattern": [ "https://example.com:8080/foo?bar#baz" ],
+    "inputs": [{ "pathname": "/foo", "search": "bar", "hash": "baz",
+                 "baseURL": "https://example.com:8080" }],
+    "exactly_empty_components": [ "username", "password" ],
+    "expected_obj": {
+      "protocol": "https",
+      "hostname": "example.com",
+      "port": "8080",
+      "pathname": "/foo",
+      "search": "bar",
+      "hash": "baz"
+    },
+    "expected_match": {
+      "protocol": { "input": "https", "groups": {} },
+      "hostname": { "input": "example.com", "groups": {} },
+      "port": { "input": "8080", "groups": {} },
+      "pathname": { "input": "/foo", "groups": {} },
+      "search": { "input": "bar", "groups": {} },
+      "hash": { "input": "baz", "groups": {} }
+    }
+  },
+  {
+    "pattern": [ "/foo?bar#baz", "https://example.com:8080" ],
+    "inputs": [{ "pathname": "/foo", "search": "bar", "hash": "baz",
+                 "baseURL": "https://example.com:8080" }],
+    "exactly_empty_components": [ "username", "password" ],
+    "expected_obj": {
+      "pathname": "/foo",
+      "search": "bar",
+      "hash": "baz"
+    },
+    "expected_match": {
+      "protocol": { "input": "https", "groups": {} },
+      "hostname": { "input": "example.com", "groups": {} },
+      "port": { "input": "8080", "groups": {} },
+      "pathname": { "input": "/foo", "groups": {} },
+      "search": { "input": "bar", "groups": {} },
+      "hash": { "input": "baz", "groups": {} }
+    }
+  },
+  {
+    "pattern": [ "/foo" ],
+    "expected_obj": "error"
+  },
+  {
+    "pattern": [ "example.com/foo" ],
+    "expected_obj": "error"
+  },
+  {
+    "pattern": [ "http{s}?://{*.}?example.com/:product/:endpoint" ],
+    "inputs": [ "https://sub.example.com/foo/bar" ],
+    "exactly_empty_components": [ "username", "password", "port", "search",
+                                  "hash" ],
+    "expected_obj": {
+      "protocol": "http{s}?",
+      "hostname": "{*.}?example.com",
+      "pathname": "/:product/:endpoint"
+    },
+    "expected_match": {
+      "protocol": { "input": "https", "groups": {} },
+      "hostname": { "input": "sub.example.com", "groups": { "0": "sub" } },
+      "pathname": { "input": "/foo/bar", "groups": { "product": "foo",
+                                                     "endpoint": "bar" } }
+    }
+  },
+  {
+    "pattern": [ "https://example.com?foo" ],
+    "inputs": [ "https://example.com/?foo" ],
+    "exactly_empty_components": [ "username", "password", "port", "search",
+                                  "hash" ],
+    "expected_obj": {
+      "protocol": "https",
+      "hostname": "example.com",
+      "pathname": "/",
+      "search": "foo"
+    },
+    "expected_match": {
+      "protocol": { "input": "https", "groups": {} },
+      "hostname": { "input": "example.com", "groups": {} },
+      "pathname": { "input": "/", "groups": {} },
+      "search": { "input": "foo", "groups": {} }
+    }
+  },
+  {
+    "pattern": [ "https://example.com#foo" ],
+    "inputs": [ "https://example.com/#foo" ],
+    "exactly_empty_components": [ "username", "password", "port", "search",
+                                  "hash" ],
+    "expected_obj": {
+      "protocol": "https",
+      "hostname": "example.com",
+      "pathname": "/",
+      "hash": "foo"
+    },
+    "expected_match": {
+      "protocol": { "input": "https", "groups": {} },
+      "hostname": { "input": "example.com", "groups": {} },
+      "pathname": { "input": "/", "groups": {} },
+      "hash": { "input": "foo", "groups": {} }
+    }
+  },
+  {
+    "pattern": [ "https://example.com:8080?foo" ],
+    "inputs": [ "https://example.com:8080/?foo" ],
+    "exactly_empty_components": [ "username", "password", "hash" ],
+    "expected_obj": {
+      "protocol": "https",
+      "hostname": "example.com",
+      "port": "8080",
+      "pathname": "/",
+      "search": "foo"
+    },
+    "expected_match": {
+      "protocol": { "input": "https", "groups": {} },
+      "hostname": { "input": "example.com", "groups": {} },
+      "port": { "input": "8080", "groups": {} },
+      "pathname": { "input": "/", "groups": {} },
+      "search": { "input": "foo", "groups": {} }
+    }
+  },
+  {
+    "pattern": [ "https://example.com:8080#foo" ],
+    "inputs": [ "https://example.com:8080/#foo" ],
+    "exactly_empty_components": [ "username", "password", "search" ],
+    "expected_obj": {
+      "protocol": "https",
+      "hostname": "example.com",
+      "port": "8080",
+      "pathname": "/",
+      "hash": "foo"
+    },
+    "expected_match": {
+      "protocol": { "input": "https", "groups": {} },
+      "hostname": { "input": "example.com", "groups": {} },
+      "port": { "input": "8080", "groups": {} },
+      "pathname": { "input": "/", "groups": {} },
+      "hash": { "input": "foo", "groups": {} }
+    }
+  },
+  {
+    "pattern": [ "https://example.com/?foo" ],
+    "inputs": [ "https://example.com/?foo" ],
+    "exactly_empty_components": [ "username", "password", "port", "hash" ],
+    "expected_obj": {
+      "protocol": "https",
+      "hostname": "example.com",
+      "pathname": "/",
+      "search": "foo"
+    },
+    "expected_match": {
+      "protocol": { "input": "https", "groups": {} },
+      "hostname": { "input": "example.com", "groups": {} },
+      "pathname": { "input": "/", "groups": {} },
+      "search": { "input": "foo", "groups": {} }
+    }
+  },
+  {
+    "pattern": [ "https://example.com/#foo" ],
+    "inputs": [ "https://example.com/#foo" ],
+    "exactly_empty_components": [ "username", "password", "port", "search" ],
+    "expected_obj": {
+      "protocol": "https",
+      "hostname": "example.com",
+      "pathname": "/",
+      "hash": "foo"
+    },
+    "expected_match": {
+      "protocol": { "input": "https", "groups": {} },
+      "hostname": { "input": "example.com", "groups": {} },
+      "pathname": { "input": "/", "groups": {} },
+      "hash": { "input": "foo", "groups": {} }
+    }
+  },
+  {
+    "pattern": [ "https://example.com/*?foo" ],
+    "inputs": [ "https://example.com/?foo" ],
+    "exactly_empty_components": [ "username", "password", "port", "search",
+                                  "hash" ],
+    "expected_obj": {
+      "protocol": "https",
+      "hostname": "example.com",
+      "pathname": "/*?foo"
+    },
+    "expected_match": null
+  },
+  {
+    "pattern": [ "https://example.com/*\\?foo" ],
+    "inputs": [ "https://example.com/?foo" ],
+    "exactly_empty_components": [ "username", "password", "port", "hash" ],
+    "expected_obj": {
+      "protocol": "https",
+      "hostname": "example.com",
+      "pathname": "/*",
+      "search": "foo"
+    },
+    "expected_match": {
+      "protocol": { "input": "https", "groups": {} },
+      "hostname": { "input": "example.com", "groups": {} },
+      "pathname": { "input": "/", "groups": { "0": "" } },
+      "search": { "input": "foo", "groups": {} }
+    }
+  },
+  {
+    "pattern": [ "https://example.com/:name?foo" ],
+    "inputs": [ "https://example.com/bar?foo" ],
+    "exactly_empty_components": [ "username", "password", "port", "search",
+                                  "hash" ],
+    "expected_obj": {
+      "protocol": "https",
+      "hostname": "example.com",
+      "pathname": "/:name?foo"
+    },
+    "expected_match": null
+  },
+  {
+    "pattern": [ "https://example.com/:name\\?foo" ],
+    "inputs": [ "https://example.com/bar?foo" ],
+    "exactly_empty_components": [ "username", "password", "port", "hash" ],
+    "expected_obj": {
+      "protocol": "https",
+      "hostname": "example.com",
+      "pathname": "/:name",
+      "search": "foo"
+    },
+    "expected_match": {
+      "protocol": { "input": "https", "groups": {} },
+      "hostname": { "input": "example.com", "groups": {} },
+      "pathname": { "input": "/bar", "groups": { "name": "bar" } },
+      "search": { "input": "foo", "groups": {} }
+    }
+  },
+  {
+    "pattern": [ "https://example.com/(bar)?foo" ],
+    "inputs": [ "https://example.com/bar?foo" ],
+    "exactly_empty_components": [ "username", "password", "port", "search", "hash" ],
+    "expected_obj": {
+      "protocol": "https",
+      "hostname": "example.com",
+      "pathname": "/(bar)?foo"
+    },
+    "expected_match": null
+  },
+  {
+    "pattern": [ "https://example.com/(bar)\\?foo" ],
+    "inputs": [ "https://example.com/bar?foo" ],
+    "exactly_empty_components": [ "username", "password", "port", "hash" ],
+    "expected_obj": {
+      "protocol": "https",
+      "hostname": "example.com",
+      "pathname": "/(bar)",
+      "search": "foo"
+    },
+    "expected_match": {
+      "protocol": { "input": "https", "groups": {} },
+      "hostname": { "input": "example.com", "groups": {} },
+      "pathname": { "input": "/bar", "groups": { "0": "bar" } },
+      "search": { "input": "foo", "groups": {} }
+    }
+  },
+  {
+    "pattern": [ "https://example.com/{bar}?foo" ],
+    "inputs": [ "https://example.com/bar?foo" ],
+    "exactly_empty_components": [ "username", "password", "port", "search", "hash" ],
+    "expected_obj": {
+      "protocol": "https",
+      "hostname": "example.com",
+      "pathname": "/{bar}?foo"
+    },
+    "expected_match": null
+  },
+  {
+    "pattern": [ "https://example.com/{bar}\\?foo" ],
+    "inputs": [ "https://example.com/bar?foo" ],
+    "exactly_empty_components": [ "username", "password", "port", "hash" ],
+    "expected_obj": {
+      "protocol": "https",
+      "hostname": "example.com",
+      "pathname": "/bar",
+      "search": "foo"
+    },
+    "expected_match": {
+      "protocol": { "input": "https", "groups": {} },
+      "hostname": { "input": "example.com", "groups": {} },
+      "pathname": { "input": "/bar", "groups": {} },
+      "search": { "input": "foo", "groups": {} }
+    }
+  },
+  {
+    "pattern": [ "https://example.com/" ],
+    "inputs": [ "https://example.com:8080/" ],
+    "exactly_empty_components": [ "username", "password", "port", "search",
+                                  "hash" ],
+    "expected_obj": {
+      "protocol": "https",
+      "hostname": "example.com",
+      "port": "",
+      "pathname": "/"
+    },
+    "expected_match": null
+  },
+  {
+    "pattern": [ "data:foobar" ],
+    "inputs": [ "data:foobar" ],
+    "expected_obj": "error"
+  },
+  {
+    "pattern": [ "data\\:foobar" ],
+    "inputs": [ "data:foobar" ],
+    "exactly_empty_components": [ "username", "password", "hostname", "port",
+                                  "search", "hash" ],
+    "expected_obj": {
+      "protocol": "data",
+      "pathname": "foobar"
+    },
+    "expected_match": {
+      "protocol": { "input": "data", "groups": {} },
+      "pathname": { "input": "foobar", "groups": {} }
+    }
+  },
+  {
+    "pattern": [ "https://{sub.}?example.com/foo" ],
+    "inputs": [ "https://example.com/foo" ],
+    "exactly_empty_components": [ "username", "password", "port", "search",
+                                  "hash" ],
+    "expected_obj": {
+      "protocol": "https",
+      "hostname": "{sub.}?example.com",
+      "pathname": "/foo"
+    },
+    "expected_match": {
+      "protocol": { "input": "https", "groups": {} },
+      "hostname": { "input": "example.com", "groups": {} },
+      "pathname": { "input": "/foo", "groups": {} }
+    }
+  },
+  {
+    "pattern": [ "https://{sub.}?example{.com/}foo" ],
+    "inputs": [ "https://example.com/foo" ],
+    "expected_obj": "error"
+  },
+  {
+    "pattern": [ "{https://}example.com/foo" ],
+    "inputs": [ "https://example.com/foo" ],
+    "expected_obj": "error"
+  },
+  {
+    "pattern": [ "https://(sub.)?example.com/foo" ],
+    "inputs": [ "https://example.com/foo" ],
+    "exactly_empty_components": [ "username", "password", "port", "search",
+                                  "hash" ],
+    "expected_obj": {
+      "protocol": "https",
+      "hostname": "(sub.)?example.com",
+      "pathname": "/foo"
+    },
+    "//": "The `null` below is translated to undefined in the test harness.",
+    "expected_match": {
+      "protocol": { "input": "https", "groups": {} },
+      "hostname": { "input": "example.com", "groups": { "0": null } },
+      "pathname": { "input": "/foo", "groups": {} }
+    }
+  },
+  {
+    "pattern": [ "https://(sub.)?example(.com/)foo" ],
+    "inputs": [ "https://example.com/foo" ],
+    "exactly_empty_components": [ "username", "password", "port", "search",
+                                  "hash" ],
+    "expected_obj": {
+      "protocol": "https",
+      "hostname": "(sub.)?example(.com/)foo",
+      "pathname": "/"
+    },
+    "expected_match": null
+  },
+  {
+    "pattern": [ "(https://)example.com/foo" ],
+    "inputs": [ "https://example.com/foo" ],
+    "expected_obj": "error"
+  },
+  {
+    "pattern": [ "https://{sub{.}}example.com/foo" ],
+    "inputs": [ "https://example.com/foo" ],
+    "expected_obj": "error"
+  },
+  {
+    "pattern": [ "https://(sub(?:.))?example.com/foo" ],
+    "inputs": [ "https://example.com/foo" ],
+    "exactly_empty_components": [ "username", "password", "port", "search",
+                                  "hash" ],
+    "expected_obj": {
+      "protocol": "https",
+      "hostname": "(sub(?:.))?example.com",
+      "pathname": "/foo"
+    },
+    "//": "The `null` below is translated to undefined in the test harness.",
+    "expected_match": {
+      "protocol": { "input": "https", "groups": {} },
+      "hostname": { "input": "example.com", "groups": { "0": null } },
+      "pathname": { "input": "/foo", "groups": {} }
+    }
+  },
+  {
+    "pattern": [ "file:///foo/bar" ],
+    "inputs": [ "file:///foo/bar" ],
+    "exactly_empty_components": [ "username", "password", "hostname", "port",
+                                  "search", "hash" ],
+    "expected_obj": {
+      "protocol": "file",
+      "pathname": "/foo/bar"
+    },
+    "expected_match": {
+      "protocol": { "input": "file", "groups": {} },
+      "pathname": { "input": "/foo/bar", "groups": {} }
+    }
+  },
+  {
+    "pattern": [ "data:" ],
+    "inputs": [ "data:" ],
+    "exactly_empty_components": [ "username", "password", "hostname", "port",
+                                  "pathname", "search", "hash" ],
+    "expected_obj": {
+      "protocol": "data"
+    },
+    "expected_match": {
+      "protocol": { "input": "data", "groups": {} }
+    }
+  },
+  {
+    "pattern": [ "foo://bar" ],
+    "inputs": [ "foo://bad_url_browser_interop" ],
+    "exactly_empty_components": [ "username", "password", "port", "pathname",
+                                  "search", "hash" ],
+    "expected_obj": {
+      "protocol": "foo",
+      "hostname": "bar"
+    },
+    "expected_match": null
+  },
+  {
+    "pattern": [ "(café)://foo" ],
+    "expected_obj": "error"
+  },
+  {
+    "pattern": [ "https://example.com/foo?bar#baz" ],
+    "inputs": [{ "protocol": "https:",
+                 "search": "?bar",
+                 "hash": "#baz",
+                 "baseURL": "http://example.com/foo" }],
+    "exactly_empty_components": [ "username", "password", "port" ],
+    "expected_obj": {
+      "protocol": "https",
+      "hostname": "example.com",
+      "pathname": "/foo",
+      "search": "bar",
+      "hash": "baz"
+    },
+    "expected_match": {
+      "protocol": { "input": "https", "groups": {} },
+      "hostname": { "input": "example.com", "groups": {} },
+      "pathname": { "input": "/foo", "groups": {} },
+      "search": { "input": "bar", "groups": {} },
+      "hash": { "input": "baz", "groups": {} }
+    }
+  },
+  {
+    "pattern": [{ "protocol": "http{s}?:",
+                  "search": "?bar",
+                  "hash": "#baz" }],
+    "inputs": [ "http://example.com/foo?bar#baz" ],
+    "expected_obj": {
+      "protocol": "http{s}?",
+      "search": "bar",
+      "hash": "baz"
+    },
+    "expected_match": {
+      "protocol": { "input": "http", "groups": {} },
+      "hostname": { "input": "example.com", "groups": { "0": "example.com" }},
+      "pathname": { "input": "/foo", "groups": { "0": "/foo" }},
+      "search": { "input": "bar", "groups": {} },
+      "hash": { "input": "baz", "groups": {} }
+    }
+  },
+  {
+    "pattern": [ "?bar#baz", "https://example.com/foo" ],
+    "inputs": [ "?bar#baz", "https://example.com/foo" ],
+    "exactly_empty_components": [ "username", "password", "port" ],
+    "expected_obj": {
+      "protocol": "https",
+      "hostname": "example.com",
+      "pathname": "/foo",
+      "search": "bar",
+      "hash": "baz"
+    },
+    "expected_match": {
+      "protocol": { "input": "https", "groups": {} },
+      "hostname": { "input": "example.com", "groups": {} },
+      "pathname": { "input": "/foo", "groups": {} },
+      "search": { "input": "bar", "groups": {} },
+      "hash": { "input": "baz", "groups": {} }
+    }
+  },
+  {
+    "pattern": [ "?bar", "https://example.com/foo#baz" ],
+    "inputs": [ "?bar", "https://example.com/foo#snafu" ],
+    "exactly_empty_components": [ "username", "password", "port", "hash" ],
+    "expected_obj": {
+      "protocol": "https",
+      "hostname": "example.com",
+      "pathname": "/foo",
+      "search": "bar"
+    },
+    "expected_match": {
+      "protocol": { "input": "https", "groups": {} },
+      "hostname": { "input": "example.com", "groups": {} },
+      "pathname": { "input": "/foo", "groups": {} },
+      "search": { "input": "bar", "groups": {} }
+    }
+  },
+  {
+    "pattern": [ "#baz", "https://example.com/foo?bar" ],
+    "inputs": [ "#baz", "https://example.com/foo?bar" ],
+    "exactly_empty_components": [ "username", "password", "port" ],
+    "expected_obj": {
+      "protocol": "https",
+      "hostname": "example.com",
+      "pathname": "/foo",
+      "search": "bar",
+      "hash": "baz"
+    },
+    "expected_match": {
+      "protocol": { "input": "https", "groups": {} },
+      "hostname": { "input": "example.com", "groups": {} },
+      "pathname": { "input": "/foo", "groups": {} },
+      "search": { "input": "bar", "groups": {} },
+      "hash": { "input": "baz", "groups": {} }
+    }
+  },
+  {
+    "pattern": [ "#baz", "https://example.com/foo" ],
+    "inputs": [ "#baz", "https://example.com/foo" ],
+    "exactly_empty_components": [ "username", "password", "port", "search" ],
+    "expected_obj": {
+      "protocol": "https",
+      "hostname": "example.com",
+      "pathname": "/foo",
+      "hash": "baz"
+    },
+    "expected_match": {
+      "protocol": { "input": "https", "groups": {} },
+      "hostname": { "input": "example.com", "groups": {} },
+      "pathname": { "input": "/foo", "groups": {} },
+      "hash": { "input": "baz", "groups": {} }
+    }
+  },
+  {
+    "pattern": [{ "pathname": "*" }],
+    "inputs": [ "foo", "data:data-urls-cannot-be-base-urls" ],
+    "expected_match": null
+  },
+  {
+    "pattern": [{ "pathname": "*" }],
+    "inputs": [ "foo", "not|a|valid|url" ],
+    "expected_match": null
+  },
+  {
+    "pattern": [ "https://foo\\:bar@example.com" ],
+    "inputs": [ "https://foo:bar@example.com" ],
+    "exactly_empty_components": [ "port", "search", "hash" ],
+    "expected_obj": {
+      "protocol": "https",
+      "username": "foo",
+      "password": "bar",
+      "hostname": "example.com",
+      "pathname": "/"
+    },
+    "expected_match": {
+      "protocol": { "input": "https", "groups": {} },
+      "username": { "input": "foo", "groups": {} },
+      "password": { "input": "bar", "groups": {} },
+      "hostname": { "input": "example.com", "groups": {} },
+      "pathname": { "input": "/", "groups": {} }
+    }
+  },
+  {
+    "pattern": [ "https://foo@example.com" ],
+    "inputs": [ "https://foo@example.com" ],
+    "exactly_empty_components": [ "password", "port", "search", "hash" ],
+    "expected_obj": {
+      "protocol": "https",
+      "username": "foo",
+      "hostname": "example.com",
+      "pathname": "/"
+    },
+    "expected_match": {
+      "protocol": { "input": "https", "groups": {} },
+      "username": { "input": "foo", "groups": {} },
+      "hostname": { "input": "example.com", "groups": {} },
+      "pathname": { "input": "/", "groups": {} }
+    }
+  },
+  {
+    "pattern": [ "https://\\:bar@example.com" ],
+    "inputs": [ "https://:bar@example.com" ],
+    "exactly_empty_components": [ "username", "port", "search", "hash" ],
+    "expected_obj": {
+      "protocol": "https",
+      "password": "bar",
+      "hostname": "example.com",
+      "pathname": "/"
+    },
+    "expected_match": {
+      "protocol": { "input": "https", "groups": {} },
+      "password": { "input": "bar", "groups": {} },
+      "hostname": { "input": "example.com", "groups": {} },
+      "pathname": { "input": "/", "groups": {} }
+    }
+  },
+  {
+    "pattern": [ "https://:user::pass@example.com" ],
+    "inputs": [ "https://foo:bar@example.com" ],
+    "exactly_empty_components": [ "port", "search", "hash" ],
+    "expected_obj": {
+      "protocol": "https",
+      "username": ":user",
+      "password": ":pass",
+      "hostname": "example.com",
+      "pathname": "/"
+    },
+    "expected_match": {
+      "protocol": { "input": "https", "groups": {} },
+      "username": { "input": "foo", "groups": { "user": "foo" } },
+      "password": { "input": "bar", "groups": { "pass": "bar" } },
+      "hostname": { "input": "example.com", "groups": {} },
+      "pathname": { "input": "/", "groups": {} }
+    }
+  },
+  {
+    "pattern": [ "https\\:foo\\:bar@example.com" ],
+    "inputs": [ "https:foo:bar@example.com" ],
+    "exactly_empty_components": [ "port", "search", "hash" ],
+    "expected_obj": {
+      "protocol": "https",
+      "username": "foo",
+      "password": "bar",
+      "hostname": "example.com",
+      "pathname": "/"
+    },
+    "expected_match": {
+      "protocol": { "input": "https", "groups": {} },
+      "username": { "input": "foo", "groups": {} },
+      "password": { "input": "bar", "groups": {} },
+      "hostname": { "input": "example.com", "groups": {} },
+      "pathname": { "input": "/", "groups": {} }
+    }
+  },
+  {
+    "pattern": [ "data\\:foo\\:bar@example.com" ],
+    "inputs": [ "data:foo:bar@example.com" ],
+    "exactly_empty_components": [ "username", "password", "hostname", "port",
+                                  "search", "hash" ],
+    "expected_obj": {
+      "protocol": "data",
+      "pathname": "foo\\:bar@example.com"
+    },
+    "expected_match": {
+      "protocol": { "input": "data", "groups": {} },
+      "pathname": { "input": "foo:bar@example.com", "groups": {} }
+    }
+  },
+  {
+    "pattern": [ "https://foo{\\:}bar@example.com" ],
+    "inputs": [ "https://foo:bar@example.com" ],
+    "exactly_empty_components": [ "password", "port", "search", "hash" ],
+    "expected_obj": {
+      "protocol": "https",
+      "username": "foo%3Abar",
+      "hostname": "example.com",
+      "pathname": "/"
+    },
+    "expected_match": null
+  },
+  {
+    "pattern": [ "data{\\:}channel.html", "https://example.com" ],
+    "inputs": [ "https://example.com/data:channel.html" ],
+    "exactly_empty_components": [ "username", "password", "port", "search",
+                                  "hash" ],
+    "expected_obj": {
+      "protocol": "https",
+      "hostname": "example.com",
+      "pathname": "/data\\:channel.html"
+    },
+    "expected_match": {
+      "protocol": { "input": "https", "groups": {} },
+      "hostname": { "input": "example.com", "groups": {} },
+      "pathname": { "input": "/data:channel.html", "groups": {} }
+    }
+  },
+  {
+    "pattern": [ "http://[\\:\\:1]/" ],
+    "inputs": [ "http://[::1]/" ],
+    "exactly_empty_components": [ "username", "password", "port", "search",
+                                  "hash" ],
+    "expected_obj": {
+      "protocol": "http",
+      "hostname": "[\\:\\:1]",
+      "pathname": "/"
+    },
+    "expected_match": {
+      "protocol": { "input": "http", "groups": {} },
+      "hostname": { "input": "[::1]", "groups": {} },
+      "pathname": { "input": "/", "groups": {} }
+    }
+  },
+  {
+    "pattern": [ "http://[\\:\\:1]:8080/" ],
+    "inputs": [ "http://[::1]:8080/" ],
+    "exactly_empty_components": [ "username", "password", "search", "hash" ],
+    "expected_obj": {
+      "protocol": "http",
+      "hostname": "[\\:\\:1]",
+      "port": "8080",
+      "pathname": "/"
+    },
+    "expected_match": {
+      "protocol": { "input": "http", "groups": {} },
+      "hostname": { "input": "[::1]", "groups": {} },
+      "port": { "input": "8080", "groups": {} },
+      "pathname": { "input": "/", "groups": {} }
+    }
+  },
+  {
+    "pattern": [ "http://[\\:\\:a]/" ],
+    "inputs": [ "http://[::a]/" ],
+    "exactly_empty_components": [ "username", "password", "port", "search",
+                                  "hash" ],
+    "expected_obj": {
+      "protocol": "http",
+      "hostname": "[\\:\\:a]",
+      "pathname": "/"
+    },
+    "expected_match": {
+      "protocol": { "input": "http", "groups": {} },
+      "hostname": { "input": "[::a]", "groups": {} },
+      "pathname": { "input": "/", "groups": {} }
+    }
+  },
+  {
+    "pattern": [ "http://[:address]/" ],
+    "inputs": [ "http://[::1]/" ],
+    "exactly_empty_components": [ "username", "password", "port", "search",
+                                  "hash" ],
+    "expected_obj": {
+      "protocol": "http",
+      "hostname": "[:address]",
+      "pathname": "/"
+    },
+    "expected_match": {
+      "protocol": { "input": "http", "groups": {} },
+      "hostname": { "input": "[::1]", "groups": { "address": "::1" }},
+      "pathname": { "input": "/", "groups": {} }
+    }
+  },
+  {
+    "pattern": [ "http://[\\:\\:AB\\::num]/" ],
+    "inputs": [ "http://[::ab:1]/" ],
+    "exactly_empty_components": [ "username", "password", "port", "search",
+                                  "hash" ],
+    "expected_obj": {
+      "protocol": "http",
+      "hostname": "[\\:\\:ab\\::num]",
+      "pathname": "/"
+    },
+    "expected_match": {
+      "protocol": { "input": "http", "groups": {} },
+      "hostname": { "input": "[::ab:1]", "groups": { "num": "1" }},
+      "pathname": { "input": "/", "groups": {} }
+    }
+  },
+  {
+    "pattern": [{ "hostname": "[\\:\\:AB\\::num]" }],
+    "inputs": [{ "hostname": "[::ab:1]" }],
+    "expected_obj": {
+      "hostname": "[\\:\\:ab\\::num]"
+    },
+    "expected_match": {
+      "hostname": { "input": "[::ab:1]", "groups": { "num": "1" }}
+    }
+  },
+  {
+    "pattern": [{ "hostname": "[\\:\\:xY\\::num]" }],
+    "expected_obj": "error"
+  },
+  {
+    "pattern": [{ "hostname": "{[\\:\\:ab\\::num]}" }],
+    "inputs": [{ "hostname": "[::ab:1]" }],
+    "expected_match": {
+      "hostname": { "input": "[::ab:1]", "groups": { "num": "1" }}
+    }
+  },
+  {
+    "pattern": [{ "hostname": "{[\\:\\:fé\\::num]}" }],
+    "expected_obj": "error"
+  },
+  {
+    "pattern": [{ "hostname": "{[\\:\\::num\\:1]}" }],
+    "inputs": [{ "hostname": "[::ab:1]" }],
+    "expected_match": {
+      "hostname": { "input": "[::ab:1]", "groups": { "num": "ab" }}
+    }
+  },
+  {
+    "pattern": [{ "hostname": "{[\\:\\::num\\:fé]}" }],
+    "expected_obj": "error"
+  },
+  {
+    "pattern": [{ "hostname": "[*\\:1]" }],
+    "inputs": [{ "hostname": "[::ab:1]" }],
+    "expected_match": {
+      "hostname": { "input": "[::ab:1]", "groups": { "0": "::ab" }}
+    }
+  },
+  {
+    "pattern": [{ "hostname": "*\\:1]" }],
+    "expected_obj": "error"
+  },
+  {
+    "pattern": [ "https://foo{{@}}example.com" ],
+    "inputs": [ "https://foo@example.com" ],
+    "expected_obj": "error"
+  },
+  {
+    "pattern": [ "https://foo{@example.com" ],
+    "inputs": [ "https://foo@example.com" ],
+    "expected_obj": "error"
+  },
+  {
+    "pattern": [ "data\\:text/javascript,let x = 100/:tens?5;" ],
+    "inputs": [ "data:text/javascript,let x = 100/5;" ],
+    "exactly_empty_components": [ "username", "password", "hostname", "port",
+                                  "search", "hash" ],
+    "expected_obj": {
+      "protocol": "data",
+      "pathname": "text/javascript,let x = 100/:tens?5;"
+    },
+    "//": "The `null` below is translated to undefined in the test harness.",
+    "expected_match": {
+      "protocol": { "input": "data", "groups": {} },
+      "pathname": { "input": "text/javascript,let x = 100/5;", "groups": { "tens": null } }
+    }
+  },
+  {
+    "pattern": [{ "pathname": "/:id/:id" }],
+    "expected_obj": "error"
+  },
+  {
+    "pattern": [{ "pathname": "/foo", "baseURL": "" }],
+    "expected_obj": "error"
+  },
+  {
+    "pattern": [ "/foo", "" ],
+    "expected_obj": "error"
+  },
+  {
+    "pattern": [{ "pathname": "/foo" }, "https://example.com" ],
+    "expected_obj": "error"
+  },
+  {
+    "pattern": [{ "pathname": ":name*" }],
+    "inputs": [{ "pathname": "foobar" }],
+    "expected_match": {
+      "pathname": { "input": "foobar", "groups": { "name": "foobar" }}
+    }
+  },
+  {
+    "pattern": [{ "pathname": ":name+" }],
+    "inputs": [{ "pathname": "foobar" }],
+    "expected_match": {
+      "pathname": { "input": "foobar", "groups": { "name": "foobar" }}
+    }
+  },
+  {
+    "pattern": [{ "pathname": ":name" }],
+    "inputs": [{ "pathname": "foobar" }],
+    "expected_match": {
+      "pathname": { "input": "foobar", "groups": { "name": "foobar" }}
+    }
+  },
+  {
+    "pattern": [{ "protocol": ":name*" }],
+    "inputs": [{ "protocol": "foobar" }],
+    "expected_match": {
+      "protocol": { "input": "foobar", "groups": { "name": "foobar" }}
+    }
+  },
+  {
+    "pattern": [{ "protocol": ":name+" }],
+    "inputs": [{ "protocol": "foobar" }],
+    "expected_match": {
+      "protocol": { "input": "foobar", "groups": { "name": "foobar" }}
+    }
+  },
+  {
+    "pattern": [{ "protocol": ":name" }],
+    "inputs": [{ "protocol": "foobar" }],
+    "expected_match": {
+      "protocol": { "input": "foobar", "groups": { "name": "foobar" }}
+    }
+  },
+  {
+    "pattern": [{ "hostname": "bad hostname" }],
+    "expected_obj": "error"
+  },
+  {
+    "pattern": [{ "hostname": "bad#hostname" }],
+    "expected_obj": "error"
+  },
+  {
+    "pattern": [{ "hostname": "bad%hostname" }],
+    "expected_obj": "error"
+  },
+  {
+    "pattern": [{ "hostname": "bad/hostname" }],
+    "expected_obj": "error"
+  },
+  {
+    "pattern": [{ "hostname": "bad\\:hostname" }],
+    "expected_obj": "error"
+  },
+  {
+    "pattern": [{ "hostname": "bad<hostname" }],
+    "expected_obj": "error"
+  },
+  {
+    "pattern": [{ "hostname": "bad>hostname" }],
+    "expected_obj": "error"
+  },
+  {
+    "pattern": [{ "hostname": "bad?hostname" }],
+    "expected_obj": "error"
+  },
+  {
+    "pattern": [{ "hostname": "bad@hostname" }],
+    "expected_obj": "error"
+  },
+  {
+    "pattern": [{ "hostname": "bad[hostname" }],
+    "expected_obj": "error"
+  },
+  {
+    "pattern": [{ "hostname": "bad]hostname" }],
+    "expected_obj": "error"
+  },
+  {
+    "pattern": [{ "hostname": "bad\\\\hostname" }],
+    "expected_obj": "error"
+  },
+  {
+    "pattern": [{ "hostname": "bad^hostname" }],
+    "expected_obj": "error"
+  },
+  {
+    "pattern": [{ "hostname": "bad|hostname" }],
+    "expected_obj": "error"
+  },
+  {
+    "pattern": [{ "hostname": "bad\nhostname" }],
+    "expected_obj": "error"
+  },
+  {
+    "pattern": [{ "hostname": "bad\rhostname" }],
+    "expected_obj": "error"
+  },
+  {
+    "pattern": [{ "hostname": "bad\thostname" }],
+    "expected_obj": "error"
+  },
+  {
+    "pattern": [{}],
+    "inputs": ["https://example.com/"],
+    "expected_match": {
+      "protocol": { "input": "https", "groups": { "0": "https" }},
+      "hostname": { "input": "example.com", "groups": { "0": "example.com" }},
+      "pathname": { "input": "/", "groups": { "0": "/" }}
+    }
+  },
+  {
+    "pattern": [],
+    "inputs": ["https://example.com/"],
+    "expected_match": {
+      "protocol": { "input": "https", "groups": { "0": "https" }},
+      "hostname": { "input": "example.com", "groups": { "0": "example.com" }},
+      "pathname": { "input": "/", "groups": { "0": "/" }}
+    }
+  },
+  {
+    "pattern": [],
+    "inputs": [{}],
+    "expected_match": {}
+  },
+  {
+    "pattern": [],
+    "inputs": [],
+    "expected_match": { "inputs": [{}] }
+  },
+  {
+    "pattern": [{ "pathname": "(foo)(.*)" }],
+    "inputs": [{ "pathname": "foobarbaz" }],
+    "expected_match": {
+      "pathname": { "input": "foobarbaz", "groups": { "0": "foo", "1": "barbaz" }}
+    }
+  },
+  {
+    "pattern": [{ "pathname": "{(foo)bar}(.*)" }],
+    "inputs": [{ "pathname": "foobarbaz" }],
+    "expected_match": {
+      "pathname": { "input": "foobarbaz", "groups": { "0": "foo", "1": "baz" }}
+    }
+  },
+  {
+    "pattern": [{ "pathname": "(foo)?(.*)" }],
+    "inputs": [{ "pathname": "foobarbaz" }],
+    "expected_obj": {
+      "pathname": "(foo)?*"
+    },
+    "expected_match": {
+      "pathname": { "input": "foobarbaz", "groups": { "0": "foo", "1": "barbaz" }}
+    }
+  },
+  {
+    "pattern": [{ "pathname": "{:foo}(.*)" }],
+    "inputs": [{ "pathname": "foobarbaz" }],
+    "expected_match": {
+      "pathname": { "input": "foobarbaz", "groups": { "foo": "f", "0": "oobarbaz" }}
+    }
+  },
+  {
+    "pattern": [{ "pathname": "{:foo}(barbaz)" }],
+    "inputs": [{ "pathname": "foobarbaz" }],
+    "expected_match": {
+      "pathname": { "input": "foobarbaz", "groups": { "foo": "foo", "0": "barbaz" }}
+    }
+  },
+  {
+    "pattern": [{ "pathname": "{:foo}{(.*)}" }],
+    "inputs": [{ "pathname": "foobarbaz" }],
+    "expected_obj": {
+      "pathname": "{:foo}(.*)"
+    },
+    "expected_match": {
+      "pathname": { "input": "foobarbaz", "groups": { "foo": "f", "0": "oobarbaz" }}
+    }
+  },
+  {
+    "pattern": [{ "pathname": "{:foo}{(.*)bar}" }],
+    "inputs": [{ "pathname": "foobarbaz" }],
+    "expected_obj": {
+      "pathname": ":foo{*bar}"
+    },
+    "expected_match": null
+  },
+  {
+    "pattern": [{ "pathname": "{:foo}{bar(.*)}" }],
+    "inputs": [{ "pathname": "foobarbaz" }],
+    "expected_obj": {
+      "pathname": ":foo{bar*}"
+    },
+    "expected_match": {
+      "pathname": { "input": "foobarbaz", "groups": { "foo": "foo", "0": "baz" }}
+    }
+  },
+  {
+    "pattern": [{ "pathname": "{:foo}:bar(.*)" }],
+    "inputs": [{ "pathname": "foobarbaz" }],
+    "expected_obj": {
+      "pathname": ":foo:bar(.*)"
+    },
+    "expected_match": {
+      "pathname": { "input": "foobarbaz", "groups": { "foo": "f", "bar": "oobarbaz" }}
+    }
+  },
+  {
+    "pattern": [{ "pathname": "{:foo}?(.*)" }],
+    "inputs": [{ "pathname": "foobarbaz" }],
+    "expected_obj": {
+      "pathname": ":foo?*"
+    },
+    "expected_match": {
+      "pathname": { "input": "foobarbaz", "groups": { "foo": "f", "0": "oobarbaz" }}
+    }
+  },
+  {
+    "pattern": [{ "pathname": "{:foo\\bar}" }],
+    "inputs": [{ "pathname": "foobar" }],
+    "expected_match": {
+      "pathname": { "input": "foobar", "groups": { "foo": "foo" }}
+    }
+  },
+  {
+    "pattern": [{ "pathname": "{:foo\\.bar}" }],
+    "inputs": [{ "pathname": "foo.bar" }],
+    "expected_obj": {
+      "pathname": "{:foo.bar}"
+    },
+    "expected_match": {
+      "pathname": { "input": "foo.bar", "groups": { "foo": "foo" }}
+    }
+  },
+  {
+    "pattern": [{ "pathname": "{:foo(foo)bar}" }],
+    "inputs": [{ "pathname": "foobar" }],
+    "expected_match": {
+      "pathname": { "input": "foobar", "groups": { "foo": "foo" }}
+    }
+  },
+  {
+    "pattern": [{ "pathname": "{:foo}bar" }],
+    "inputs": [{ "pathname": "foobar" }],
+    "expected_match": {
+      "pathname": { "input": "foobar", "groups": { "foo": "foo" }}
+    }
+  },
+  {
+    "pattern": [{ "pathname": ":foo\\bar" }],
+    "inputs": [{ "pathname": "foobar" }],
+    "expected_obj": {
+      "pathname": "{:foo}bar"
+    },
+    "expected_match": {
+      "pathname": { "input": "foobar", "groups": { "foo": "foo" }}
+    }
+  },
+  {
+    "pattern": [{ "pathname": ":foo{}(.*)" }],
+    "inputs": [{ "pathname": "foobar" }],
+    "expected_obj": {
+      "pathname": "{:foo}(.*)"
+    },
+    "expected_match": {
+      "pathname": { "input": "foobar", "groups": { "foo": "f", "0": "oobar" }}
+    }
+  },
+  {
+    "pattern": [{ "pathname": ":foo{}bar" }],
+    "inputs": [{ "pathname": "foobar" }],
+    "expected_obj": {
+      "pathname": "{:foo}bar"
+    },
+    "expected_match": {
+      "pathname": { "input": "foobar", "groups": { "foo": "foo" }}
+    }
+  },
+  {
+    "pattern": [{ "pathname": ":foo{}?bar" }],
+    "inputs": [{ "pathname": "foobar" }],
+    "expected_obj": {
+      "pathname": "{:foo}bar"
+    },
+    "expected_match": {
+      "pathname": { "input": "foobar", "groups": { "foo": "foo" }}
+    }
+  },
+  {
+    "pattern": [{ "pathname": "*{}**?" }],
+    "inputs": [{ "pathname": "foobar" }],
+    "expected_obj": {
+      "pathname": "*(.*)?"
+    },
+    "//": "The `null` below is translated to undefined in the test harness.",
+    "expected_match": {
+      "pathname": { "input": "foobar", "groups": { "0": "foobar", "1": null }}
+    }
+  },
+  {
+    "pattern": [{ "pathname": ":foo(baz)(.*)" }],
+    "inputs": [{ "pathname": "bazbar" }],
+    "expected_match": {
+      "pathname": { "input": "bazbar", "groups": { "foo": "baz", "0": "bar" }}
+    }
+  },
+  {
+    "pattern": [{ "pathname": ":foo(baz)bar" }],
+    "inputs": [{ "pathname": "bazbar" }],
+    "expected_match": {
+      "pathname": { "input": "bazbar", "groups": { "foo": "baz" }}
+    }
+  },
+  {
+    "pattern": [{ "pathname": "*/*" }],
+    "inputs": [{ "pathname": "foo/bar" }],
+    "expected_match": {
+      "pathname": { "input": "foo/bar", "groups": { "0": "foo", "1": "bar" }}
+    }
+  },
+  {
+    "pattern": [{ "pathname": "*\\/*" }],
+    "inputs": [{ "pathname": "foo/bar" }],
+    "expected_obj": {
+      "pathname": "*/{*}"
+    },
+    "expected_match": {
+      "pathname": { "input": "foo/bar", "groups": { "0": "foo", "1": "bar" }}
+    }
+  },
+  {
+    "pattern": [{ "pathname": "*/{*}" }],
+    "inputs": [{ "pathname": "foo/bar" }],
+    "expected_match": {
+      "pathname": { "input": "foo/bar", "groups": { "0": "foo", "1": "bar" }}
+    }
+  },
+  {
+    "pattern": [{ "pathname": "*//*" }],
+    "inputs": [{ "pathname": "foo/bar" }],
+    "expected_match": null
+  },
+  {
+    "pattern": [{ "pathname": "/:foo." }],
+    "inputs": [{ "pathname": "/bar." }],
+    "expected_match": {
+      "pathname": { "input": "/bar.", "groups": { "foo": "bar" } }
+    }
+  },
+  {
+    "pattern": [{ "pathname": "/:foo.." }],
+    "inputs": [{ "pathname": "/bar.." }],
+    "expected_match": {
+      "pathname": { "input": "/bar..", "groups": { "foo": "bar" } }
+    }
+  },
+  {
+    "pattern": [{ "pathname": "./foo" }],
+    "inputs": [{ "pathname": "./foo" }],
+    "expected_match": {
+      "pathname": { "input": "./foo", "groups": {}}
+    }
+  },
+  {
+    "pattern": [{ "pathname": "../foo" }],
+    "inputs": [{ "pathname": "../foo" }],
+    "expected_match": {
+      "pathname": { "input": "../foo", "groups": {}}
+    }
+  },
+  {
+    "pattern": [{ "pathname": ":foo./" }],
+    "inputs": [{ "pathname": "bar./" }],
+    "expected_match": {
+      "pathname": { "input": "bar./", "groups": { "foo": "bar" }}
+    }
+  },
+  {
+    "pattern": [{ "pathname": ":foo../" }],
+    "inputs": [{ "pathname": "bar../" }],
+    "expected_match": {
+      "pathname": { "input": "bar../", "groups": { "foo": "bar" }}
+    }
+  },
+  {
+    "pattern": [{ "pathname": "/:foo\\bar" }],
+    "inputs": [{ "pathname": "/bazbar" }],
+    "expected_obj": {
+      "pathname": "{/:foo}bar"
+    },
+    "expected_match": {
+      "pathname": { "input": "/bazbar", "groups": { "foo": "baz" }}
+    }
+  },
+  {
+    "pattern": [{ "pathname": "/foo/bar" }, { "ignoreCase": true }],
+    "inputs": [{ "pathname": "/FOO/BAR" }],
+    "expected_match": {
+      "pathname": { "input": "/FOO/BAR", "groups": {} }
+    }
+  },
+  {
+    "pattern": [{ "ignoreCase": true }],
+    "inputs": [{ "pathname": "/FOO/BAR" }],
+    "expected_match": {
+      "pathname": { "input": "/FOO/BAR", "groups": { "0": "/FOO/BAR" } }
+    }
+  },
+  {
+    "pattern": [ "https://example.com:8080/foo?bar#baz",
+                 { "ignoreCase": true }],
+    "inputs": [{ "pathname": "/FOO", "search": "BAR", "hash": "BAZ",
+                 "baseURL": "https://example.com:8080" }],
+    "exactly_empty_components": [ "username", "password" ],
+    "expected_obj": {
+      "protocol": "https",
+      "hostname": "example.com",
+      "port": "8080",
+      "pathname": "/foo",
+      "search": "bar",
+      "hash": "baz"
+    },
+    "expected_match": {
+      "protocol": { "input": "https", "groups": {} },
+      "hostname": { "input": "example.com", "groups": {} },
+      "port": { "input": "8080", "groups": {} },
+      "pathname": { "input": "/FOO", "groups": {} },
+      "search": { "input": "BAR", "groups": {} },
+      "hash": { "input": "BAZ", "groups": {} }
+    }
+  },
+  {
+    "pattern": [ "/foo?bar#baz", "https://example.com:8080",
+                 { "ignoreCase": true }],
+    "inputs": [{ "pathname": "/FOO", "search": "BAR", "hash": "BAZ",
+                 "baseURL": "https://example.com:8080" }],
+    "exactly_empty_components": [ "username", "password" ],
+    "expected_obj": {
+      "protocol": "https",
+      "hostname": "example.com",
+      "port": "8080",
+      "pathname": "/foo",
+      "search": "bar",
+      "hash": "baz"
+    },
+    "expected_match": {
+      "protocol": { "input": "https", "groups": {} },
+      "hostname": { "input": "example.com", "groups": {} },
+      "port": { "input": "8080", "groups": {} },
+      "pathname": { "input": "/FOO", "groups": {} },
+      "search": { "input": "BAR", "groups": {} },
+      "hash": { "input": "BAZ", "groups": {} }
+    }
+  },
+  {
+    "pattern": [ "/foo?bar#baz", { "ignoreCase": true },
+                 "https://example.com:8080" ],
+    "inputs": [{ "pathname": "/FOO", "search": "BAR", "hash": "BAZ",
+                 "baseURL": "https://example.com:8080" }],
+    "expected_obj": "error"
+  },
+  {
+    "pattern": [{ "search": "foo", "baseURL": "https://example.com/a/+/b" }],
+    "inputs": [{ "search": "foo", "baseURL": "https://example.com/a/+/b" }],
+    "exactly_empty_components": [ "username", "password", "port", "hash" ],
+    "expected_obj": {
+      "pathname": "/a/\\+/b"
+    },
+    "expected_match": {
+      "hostname": { "input": "example.com", "groups": {} },
+      "pathname": { "input": "/a/+/b", "groups": {} },
+      "protocol": { "input": "https", "groups": {} },
+      "search": { "input": "foo", "groups": {} }
+    }
+  },
+  {
+    "pattern": [{ "hash": "foo", "baseURL": "https://example.com/?q=*&v=?&hmm={}&umm=()" }],
+    "inputs": [{ "hash": "foo", "baseURL": "https://example.com/?q=*&v=?&hmm={}&umm=()" }],
+    "exactly_empty_components": [ "username", "password", "port" ],
+    "expected_obj": {
+      "search": "q=\\*&v=\\?&hmm=\\{\\}&umm=\\(\\)"
+    },
+    "expected_match": {
+      "hostname": { "input": "example.com", "groups": {} },
+      "pathname": { "input": "/", "groups": {} },
+      "protocol": { "input": "https", "groups": {} },
+      "search": { "input": "q=*&v=?&hmm={}&umm=()", "groups": {} },
+      "hash": { "input": "foo", "groups": {} }
+    }
+  },
+  {
+    "pattern": [ "#foo", "https://example.com/?q=*&v=?&hmm={}&umm=()" ],
+    "inputs": [ "https://example.com/?q=*&v=?&hmm={}&umm=()#foo" ],
+    "exactly_empty_components": [ "username", "password", "port" ],
+    "expected_obj": {
+      "search": "q=\\*&v=\\?&hmm=\\{\\}&umm=\\(\\)",
+      "hash": "foo"
+    },
+    "expected_match": {
+      "hostname": { "input": "example.com", "groups": {} },
+      "pathname": { "input": "/", "groups": {} },
+      "protocol": { "input": "https", "groups": {} },
+      "search": { "input": "q=*&v=?&hmm={}&umm=()", "groups": {} },
+      "hash": { "input": "foo", "groups": {} }
+    }
+  }
+]
diff --git a/testing/web-platform/tests/urlpattern/resources/urlpatterntests.js b/testing/web-platform/tests/urlpattern/resources/urlpatterntests.js
new file mode 100644
index 0000000000..f774699bff
--- /dev/null
+++ b/testing/web-platform/tests/urlpattern/resources/urlpatterntests.js
@@ -0,0 +1,169 @@
+const kComponents = [
+  'protocol',
+  'username',
+  'password',
+  'hostname',
+  'port',
+  'password',
+  'pathname',
+  'search',
+  'hash',
+];
+
+function runTests(data) {
+  for (let entry of data) {
+    test(function() {
+      if (entry.expected_obj === 'error') {
+        assert_throws_js(TypeError, _ => new URLPattern(...entry.pattern),
+                         'URLPattern() constructor');
+        return;
+      }
+
+      const pattern = new URLPattern(...entry.pattern);
+
+      // If the expected_obj property is not present we will automatically
+      // fill it with the most likely expected values.
+      entry.expected_obj = entry.expected_obj || {};
+
+      // The compiled URLPattern object should have a property for each
+      // component exposing the compiled pattern string.
+      for (let component of kComponents) {
+        // If the test case explicitly provides an expected pattern string,
+        // then use that.  This is necessary in cases where the original
+        // construction pattern gets canonicalized, etc.
+        let expected = entry.expected_obj[component];
+
+        // If there is no explicit expected pattern string, then compute
+        // the expected value based on the URLPattern constructor args.
+        if (expected == undefined) {
+          // First determine if there is a baseURL present in the pattern
+          // input.  A baseURL can be the source for many component patterns.
+          let baseURL = null;
+          if (entry.pattern.length > 0 && entry.pattern[0].baseURL) {
+            baseURL = new URL(entry.pattern[0].baseURL);
+          } else if (entry.pattern.length > 1 &&
+                     typeof entry.pattern[1] === 'string') {
+            baseURL = new URL(entry.pattern[1]);
+          }
+
+          // We automatically populate the expected pattern string using
+          // the following options in priority order:
+          //
+          //  1. If the original input explicitly provided a pattern, then
+          //     echo that back as the expected value.
+          //  2. If the baseURL exists and provides a component value then
+          //     use that for the expected pattern.
+          //  3. Otherwise fall back on the default pattern of `*` for an
+          //     empty component pattern.
+          if (entry.exactly_empty_components &&
+              entry.exactly_empty_components.includes(component)) {
+            expected = '';
+          } else if (typeof entry.pattern[0] === 'object' &&
+              entry.pattern[0][component]) {
+            expected = entry.pattern[0][component];
+          } else if (baseURL) {
+            let base_value = baseURL[component];
+            // Unfortunately some URL() getters include separator chars; e.g.
+            // the trailing `:` for the protocol.  Strip those off if necessary.
+            if (component === 'protocol')
+              base_value = base_value.substring(0, base_value.length - 1);
+            else if (component === 'search' || component === 'hash')
+              base_value = base_value.substring(1, base_value.length);
+            expected = base_value;
+          } else {
+            expected = '*';
+          }
+        }
+
+        // Finally, assert that the compiled object property matches the
+        // expected property.
+        assert_equals(pattern[component], expected,
+                      `compiled pattern property '${component}'`);
+      }
+
+      if (entry.expected_match === 'error') {
+        assert_throws_js(TypeError, _ => pattern.test(...entry.inputs),
+                         'test() result');
+        assert_throws_js(TypeError, _ => pattern.exec(...entry.inputs),
+                         'exec() result');
+        return;
+      }
+
+      // First, validate the test() method by converting the expected result to
+      // a truthy value.
+      assert_equals(pattern.test(...entry.inputs), !!entry.expected_match,
+                    'test() result');
+
+      // Next, start validating the exec() method.
+      const exec_result = pattern.exec(...entry.inputs);
+
+      // On a failed match exec() returns null.
+      if (!entry.expected_match || typeof entry.expected_match !== "object") {
+        assert_equals(exec_result, entry.expected_match, 'exec() failed match result');
+        return;
+      }
+
+      if (!entry.expected_match.inputs)
+        entry.expected_match.inputs = entry.inputs;
+
+      // Next verify the result.input is correct.  This may be a structured
+      // URLPatternInit dictionary object or a URL string.
+      assert_equals(exec_result.inputs.length,
+                    entry.expected_match.inputs.length,
+                    'exec() result.inputs.length');
+      for (let i = 0; i < exec_result.inputs.length; ++i) {
+        const input = exec_result.inputs[i];
+        const expected_input = entry.expected_match.inputs[i];
+        if (typeof input === 'string') {
+          assert_equals(input, expected_input, `exec() result.inputs[${i}]`);
+          continue;
+        }
+        for (let component of kComponents) {
+          assert_equals(input[component], expected_input[component],
+                        `exec() result.inputs[${i}][${component}]`);
+        }
+      }
+
+      // Next we will compare the URLPatternComponentResult for each of these
+      // expected components.
+      for (let component of kComponents) {
+        let expected_obj = entry.expected_match[component];
+
+        // If the test expectations don't include a component object, then
+        // we auto-generate one.  This is convenient for the many cases
+        // where the pattern has a default wildcard or empty string pattern
+        // for a component and the input is essentially empty.
+        if (!expected_obj) {
+          expected_obj = { input: '', groups: {} };
+
+          // Next, we must treat default wildcards differently than empty string
+          // patterns.  The wildcard results in a capture group, but the empty
+          // string pattern does not.  The expectation object must list which
+          // components should be empty instead of wildcards in
+          // |exactly_empty_components|.
+          if (!entry.exactly_empty_components ||
+              !entry.exactly_empty_components.includes(component)) {
+            expected_obj.groups['0'] = '';
+          }
+        }
+        // JSON does not allow us to use undefined directly, so the data file
+        // contains null instead.  Translate to the expected undefined value
+        // here.
+        for (const key in expected_obj.groups) {
+          if (expected_obj.groups[key] === null) {
+            expected_obj.groups[key] = undefined;
+          }
+        }
+        assert_object_equals(exec_result[component], expected_obj,
+                             `exec() result for ${component}`);
+      }
+    }, `Pattern: ${JSON.stringify(entry.pattern)} ` +
+       `Inputs: ${JSON.stringify(entry.inputs)}`);
+  }
+}
+
+promise_test(async function() {
+  const response = await fetch('resources/urlpatterntestdata.json');
+  const data = await response.json();
+  runTests(data);
+}, 'Loading data...');
diff --git a/testing/web-platform/tests/urlpattern/urlpattern-compare.any.js b/testing/web-platform/tests/urlpattern/urlpattern-compare.any.js
new file mode 100644
index 0000000000..8db38adfd4
--- /dev/null
+++ b/testing/web-platform/tests/urlpattern/urlpattern-compare.any.js
@@ -0,0 +1,2 @@
+// META: global=window,worker
+// META: script=resources/urlpattern-compare-tests.js
diff --git a/testing/web-platform/tests/urlpattern/urlpattern-compare.https.any.js b/testing/web-platform/tests/urlpattern/urlpattern-compare.https.any.js
new file mode 100644
index 0000000000..8db38adfd4
--- /dev/null
+++ b/testing/web-platform/tests/urlpattern/urlpattern-compare.https.any.js
@@ -0,0 +1,2 @@
+// META: global=window,worker
+// META: script=resources/urlpattern-compare-tests.js
diff --git a/testing/web-platform/tests/urlpattern/urlpattern.any.js b/testing/web-platform/tests/urlpattern/urlpattern.any.js
new file mode 100644
index 0000000000..7d47d22609
--- /dev/null
+++ b/testing/web-platform/tests/urlpattern/urlpattern.any.js
@@ -0,0 +1,2 @@
+// META: global=window,worker
+// META: script=resources/urlpatterntests.js
diff --git a/testing/web-platform/tests/urlpattern/urlpattern.https.any.js b/testing/web-platform/tests/urlpattern/urlpattern.https.any.js
new file mode 100644
index 0000000000..7d47d22609
--- /dev/null
+++ b/testing/web-platform/tests/urlpattern/urlpattern.https.any.js
@@ -0,0 +1,2 @@
+// META: global=window,worker
+// META: script=resources/urlpatterntests.js