1 files changed, 327 insertions, 0 deletions
diff --git a/dom/tests/mochitest/fetch/test_headers_common.js b/dom/tests/mochitest/fetch/test_headers_common.js
new file mode 100644
index 0000000000..3b2604f88f
--- /dev/null
+++ b/dom/tests/mochitest/fetch/test_headers_common.js
@@ -0,0 +1,327 @@
+//
+// Utility functions
+//
+
+function shouldThrow(func, expected, msg) {
+  var err;
+  try {
+    func();
+  } catch (e) {
+    err = e;
+  } finally {
+    ok(err instanceof expected, msg);
+  }
+}
+
+function recursiveArrayCompare(actual, expected) {
+  is(
+    Array.isArray(actual),
+    Array.isArray(expected),
+    "Both should either be arrays, or not"
+  );
+  if (Array.isArray(actual) && Array.isArray(expected)) {
+    var diff = actual.length !== expected.length;
+
+    for (var i = 0, n = actual.length; !diff && i < n; ++i) {
+      diff = recursiveArrayCompare(actual[i], expected[i]);
+    }
+
+    return diff;
+  } else {
+    return actual !== expected;
+  }
+}
+
+function arrayEquals(actual, expected, msg) {
+  if (actual === expected) {
+    return;
+  }
+
+  var diff = recursiveArrayCompare(actual, expected);
+
+  ok(!diff, msg);
+  if (diff) {
+    is(actual, expected, msg);
+  }
+}
+
+function checkHas(headers, name, msg) {
+  function doCheckHas(n) {
+    return headers.has(n);
+  }
+  return _checkHas(doCheckHas, headers, name, msg);
+}
+
+function checkNotHas(headers, name, msg) {
+  function doCheckNotHas(n) {
+    return !headers.has(n);
+  }
+  return _checkHas(doCheckNotHas, headers, name, msg);
+}
+
+function _checkHas(func, headers, name, msg) {
+  ok(func(name), msg);
+  ok(func(name.toLowerCase()), msg);
+  ok(func(name.toUpperCase()), msg);
+}
+
+function checkGet(headers, name, expected, msg) {
+  is(headers.get(name), expected, msg);
+  is(headers.get(name.toLowerCase()), expected, msg);
+  is(headers.get(name.toUpperCase()), expected, msg);
+}
+
+//
+// Test Cases
+//
+
+function TestCoreBehavior(headers, name) {
+  var start = headers.get(name);
+
+  headers.append(name, "bar");
+
+  checkHas(headers, name, "Has the header");
+  var expected = start ? start.concat(", bar") : "bar";
+  checkGet(headers, name, expected, "Retrieve all headers for name");
+
+  headers.append(name, "baz");
+  checkHas(headers, name, "Has the header");
+  expected = start ? start.concat(", bar, baz") : "bar, baz";
+  checkGet(headers, name, expected, "Retrieve all headers for name");
+
+  headers.set(name, "snafu");
+  checkHas(headers, name, "Has the header after set");
+  checkGet(headers, name, "snafu", "Retrieve all headers after set");
+
+  const value_bam = "boom";
+  let testHTTPWhitespace = ["\t", "\n", "\r", " "];
+  while (testHTTPWhitespace.length) {
+    headers.delete(name);
+
+    let char = testHTTPWhitespace.shift();
+    headers.set(name, char);
+    checkGet(
+      headers,
+      name,
+      "",
+      "Header value " +
+        char +
+        " should be normalized before checking and throwing"
+    );
+    headers.delete(name);
+
+    let valueFront = char + value_bam;
+    headers.set(name, valueFront);
+    checkGet(
+      headers,
+      name,
+      value_bam,
+      "Header value " +
+        valueFront +
+        " should be normalized before checking and throwing"
+    );
+
+    headers.delete(name);
+
+    let valueBack = value_bam + char;
+    headers.set(name, valueBack);
+    checkGet(
+      headers,
+      name,
+      value_bam,
+      "Header value " +
+        valueBack +
+        " should be normalized before checking and throwing"
+    );
+  }
+
+  headers.delete(name.toUpperCase());
+  checkNotHas(headers, name, "Does not have the header after delete");
+  checkGet(headers, name, null, "Retrieve all headers after delete");
+
+  // should be ok to delete non-existent name
+  headers.delete(name);
+
+  shouldThrow(
+    function () {
+      headers.append("foo,", "bam");
+    },
+    TypeError,
+    "Append invalid header name should throw TypeError."
+  );
+
+  shouldThrow(
+    function () {
+      headers.append(name, "ba\nm");
+    },
+    TypeError,
+    "Append invalid header value should throw TypeError."
+  );
+
+  shouldThrow(
+    function () {
+      headers.append(name, "ba\rm");
+    },
+    TypeError,
+    "Append invalid header value should throw TypeError."
+  );
+
+  ok(!headers.guard, "guard should be undefined in content");
+}
+
+function TestEmptyHeaders() {
+  is(typeof Headers, "function", "Headers global constructor exists.");
+  var headers = new Headers();
+  ok(headers, "Constructed empty Headers object");
+  TestCoreBehavior(headers, "foo");
+}
+
+function TestFilledHeaders() {
+  var source = new Headers();
+  var filled = new Headers(source);
+  ok(filled, "Fill header from empty header");
+  TestCoreBehavior(filled, "foo");
+
+  source = new Headers();
+  source.append("abc", "123");
+  source.append("def", "456");
+  source.append("def", "789");
+
+  filled = new Headers(source);
+  checkGet(
+    filled,
+    "abc",
+    source.get("abc"),
+    "Single value header list matches"
+  );
+  checkGet(
+    filled,
+    "def",
+    source.get("def"),
+    "Multiple value header list matches"
+  );
+  TestCoreBehavior(filled, "def");
+
+  filled = new Headers({
+    zxy: "987",
+    xwv: "654",
+    uts: "321",
+  });
+  checkGet(filled, "zxy", "987", "Has first object filled key");
+  checkGet(filled, "xwv", "654", "Has second object filled key");
+  checkGet(filled, "uts", "321", "Has third object filled key");
+  TestCoreBehavior(filled, "xwv");
+
+  filled = new Headers([
+    ["zxy", "987"],
+    ["xwv", "654"],
+    ["xwv", "abc"],
+    ["uts", "321"],
+  ]);
+  checkGet(filled, "zxy", "987", "Has first sequence filled key");
+  checkGet(filled, "xwv", "654, abc", "Has second sequence filled key");
+  checkGet(filled, "uts", "321", "Has third sequence filled key");
+  TestCoreBehavior(filled, "xwv");
+
+  shouldThrow(
+    function () {
+      filled = new Headers([
+        ["zxy", "987", "654"],
+        ["uts", "321"],
+      ]);
+    },
+    TypeError,
+    "Fill with non-tuple sequence should throw TypeError."
+  );
+
+  shouldThrow(
+    function () {
+      filled = new Headers([["zxy"], ["uts", "321"]]);
+    },
+    TypeError,
+    "Fill with non-tuple sequence should throw TypeError."
+  );
+}
+
+function iterate(iter) {
+  var result = [];
+  for (var val = iter.next(); !val.done; ) {
+    result.push(val.value);
+    val = iter.next();
+  }
+  return result;
+}
+
+function iterateForOf(iter) {
+  var result = [];
+  for (var value of iter) {
+    result.push(value);
+  }
+  return result;
+}
+
+function byteInflate(str) {
+  var encoder = new TextEncoder();
+  var encoded = encoder.encode(str);
+  var result = "";
+  for (var i = 0; i < encoded.length; ++i) {
+    result += String.fromCharCode(encoded[i]);
+  }
+  return result;
+}
+
+function TestHeadersIterator() {
+  var ehsanInflated = byteInflate("احسان");
+  var headers = new Headers();
+  headers.set("foo0", "bar0");
+  headers.append("foo", "bar");
+  headers.append("foo", ehsanInflated);
+  headers.append("Foo2", "bar2");
+  headers.set("Foo2", "baz2");
+  headers.set("foo3", "bar3");
+  headers.delete("foo0");
+  headers.delete("foo3");
+
+  var key_iter = headers.keys();
+  var value_iter = headers.values();
+  var entries_iter = headers.entries();
+
+  arrayEquals(iterate(key_iter), ["foo", "foo2"], "Correct key iterator");
+  arrayEquals(
+    iterate(value_iter),
+    ["bar, " + ehsanInflated, "baz2"],
+    "Correct value iterator"
+  );
+  arrayEquals(
+    iterate(entries_iter),
+    [
+      ["foo", "bar, " + ehsanInflated],
+      ["foo2", "baz2"],
+    ],
+    "Correct entries iterator"
+  );
+
+  arrayEquals(
+    iterateForOf(headers),
+    [
+      ["foo", "bar, " + ehsanInflated],
+      ["foo2", "baz2"],
+    ],
+    "Correct entries iterator"
+  );
+  arrayEquals(
+    iterateForOf(new Headers(headers)),
+    [
+      ["foo", "bar, " + ehsanInflated],
+      ["foo2", "baz2"],
+    ],
+    "Correct entries iterator"
+  );
+}
+
+function runTest() {
+  TestEmptyHeaders();
+  TestFilledHeaders();
+  TestHeadersIterator();
+  return Promise.resolve();
+}