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

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

19 files changed, 4363 insertions, 0 deletions

diff --git a/testing/web-platform/tests/mimesniff/META.yml b/testing/web-platform/tests/mimesniff/META.yml
new file mode 100644
index 0000000000..fd41c87fad
--- /dev/null
+++ b/testing/web-platform/tests/mimesniff/META.yml
@@ -0,0 +1,3 @@
+spec: https://mimesniff.spec.whatwg.org/
+suggested_reviewers:
+  - annevk
diff --git a/testing/web-platform/tests/mimesniff/README.md b/testing/web-platform/tests/mimesniff/README.md
new file mode 100644
index 0000000000..4687ccef5d
--- /dev/null
+++ b/testing/web-platform/tests/mimesniff/README.md
@@ -0,0 +1,4 @@
+Tests for the [MIME Sniffing Standard](https://mimesniff.spec.whatwg.org/).
+
+Some tests are generated from data files. To update the generated
+tests, run `wpt update-built --include mimesniff`
diff --git a/testing/web-platform/tests/mimesniff/media/media-sniff.window.js b/testing/web-platform/tests/mimesniff/media/media-sniff.window.js
new file mode 100644
index 0000000000..8e9bf9a27e
--- /dev/null
+++ b/testing/web-platform/tests/mimesniff/media/media-sniff.window.js
@@ -0,0 +1,32 @@
+const tests = {
+  "vectors": [
+    "mp3-raw.mp3",
+    "mp3-with-id3.mp3",
+    "flac.flac",
+    "ogg.ogg",
+    "mp4.mp4",
+    "wav.wav",
+    "webm.webm"
+  ],
+  "contentTypes": [
+    "",
+    "bogus/mime",
+    "application/octet-stream",
+    "text/html",
+    "audio/ogg; codec=vorbis",
+    "application/pdf"
+  ]
+};
+
+tests.vectors.forEach(vector => {
+  tests.contentTypes.forEach(type => {
+    async_test(t => {
+      const element = document.createElement("audio");
+      element.src = "resources/" + vector + "?pipe=header(Content-Type,"+type+")"
+
+      element.addEventListener("error", t.unreached_func("No error expected frorm the HTMLMediaElement"));
+      element.addEventListener("loadedmetadata", t.step_func_done());
+      element.load();
+    }, vector + " loads when served with Content-Type " + type);
+  });
+});
diff --git a/testing/web-platform/tests/mimesniff/media/resources/flac.flac b/testing/web-platform/tests/mimesniff/media/resources/flac.flac
new file mode 100644
index 0000000000..747ed382c5
--- /dev/null
+++ b/testing/web-platform/tests/mimesniff/media/resources/flac.flac
diff --git a/testing/web-platform/tests/mimesniff/media/resources/make-vectors.sh b/testing/web-platform/tests/mimesniff/media/resources/make-vectors.sh
new file mode 100755
index 0000000000..2cc0d463b5
--- /dev/null
+++ b/testing/web-platform/tests/mimesniff/media/resources/make-vectors.sh
@@ -0,0 +1,10 @@
+#!/bin/sh
+
+INPUT=wav.wav
+sox -V -r 44100 -n -b 8 -c 1 wav.wav synth 0.01 sin 330 vol -6db
+ffmpeg -i $INPUT -write_xing 0 -id3v2_version 0 mp3-raw.mp3
+ffmpeg -i $INPUT mp3-with-id3.mp3
+ffmpeg -i $INPUT flac.flac
+ffmpeg -i $INPUT ogg.ogg
+ffmpeg -i $INPUT mp4.mp4
+ffmpeg -i $INPUT webm.webm
diff --git a/testing/web-platform/tests/mimesniff/media/resources/mp3-raw.mp3 b/testing/web-platform/tests/mimesniff/media/resources/mp3-raw.mp3
new file mode 100644
index 0000000000..dcc52405ac
--- /dev/null
+++ b/testing/web-platform/tests/mimesniff/media/resources/mp3-raw.mp3
diff --git a/testing/web-platform/tests/mimesniff/media/resources/mp3-with-id3.mp3 b/testing/web-platform/tests/mimesniff/media/resources/mp3-with-id3.mp3
new file mode 100644
index 0000000000..a6a2451240
--- /dev/null
+++ b/testing/web-platform/tests/mimesniff/media/resources/mp3-with-id3.mp3
diff --git a/testing/web-platform/tests/mimesniff/media/resources/mp4.mp4 b/testing/web-platform/tests/mimesniff/media/resources/mp4.mp4
new file mode 100644
index 0000000000..abefb4f71b
--- /dev/null
+++ b/testing/web-platform/tests/mimesniff/media/resources/mp4.mp4
diff --git a/testing/web-platform/tests/mimesniff/media/resources/ogg.ogg b/testing/web-platform/tests/mimesniff/media/resources/ogg.ogg
new file mode 100644
index 0000000000..ba0b18218b
--- /dev/null
+++ b/testing/web-platform/tests/mimesniff/media/resources/ogg.ogg
diff --git a/testing/web-platform/tests/mimesniff/media/resources/wav.wav b/testing/web-platform/tests/mimesniff/media/resources/wav.wav
new file mode 100644
index 0000000000..5229388e1e
--- /dev/null
+++ b/testing/web-platform/tests/mimesniff/media/resources/wav.wav
diff --git a/testing/web-platform/tests/mimesniff/media/resources/webm.webm b/testing/web-platform/tests/mimesniff/media/resources/webm.webm
new file mode 100644
index 0000000000..32a4af895a
--- /dev/null
+++ b/testing/web-platform/tests/mimesniff/media/resources/webm.webm
diff --git a/testing/web-platform/tests/mimesniff/mime-types/README.md b/testing/web-platform/tests/mimesniff/mime-types/README.md
new file mode 100644
index 0000000000..eb5fba0ef0
--- /dev/null
+++ b/testing/web-platform/tests/mimesniff/mime-types/README.md
@@ -0,0 +1,47 @@
+## MIME types
+
+`resources/mime-types.json` and `resources/generated-mime-types.json` contain MIME type tests. The tests are encoded as a JSON array. String values in the array serve as documentation. All other values are objects with the following fields:
+
+* `input`: The string to be parsed.
+* `output`: Null if parsing resulted in failure and the MIME type record serialized as string otherwise.
+* `navigable`: True if the MIME type can be used for a document to be loaded in a browsing context (i.e., does not result in a download) and omitted otherwise.
+* `encoding`: The encoding that can be extracted from the MIME type or null if no encoding can be extracted, and omitted otherwise.
+
+Note: the object description implies that there tests without `navigable` or `encoding` set.
+
+A wrapper for these JSON MIME type tests needs to take care that not all `input` values can be tested in all entrypoints. Some entrypoints only accept bytes and some have further restrictions. A function such as the one below can be used to differentiate:
+
+```js
+function isByteCompatible(str) {
+  // see https://fetch.spec.whatwg.org/#concept-header-value-normalize
+  if(/^[\u0009\u0020\u000A\u000D]+|[\u0009\u0020\u000A\u000D]+$/.test(str)) {
+    return "header-value-incompatible";
+  }
+
+  for(let i = 0; i < str.length; i++) {
+    const charCode = str.charCodeAt(i);
+    // See https://fetch.spec.whatwg.org/#concept-header-value
+    if(charCode > 0xFF) {
+      return "incompatible";
+    } else if(charCode === 0x00 || charCode === 0x0A || charCode === 0x0D) {
+      return "header-value-incompatible";
+    }
+  }
+  return "compatible";
+}
+```
+
+`resources/generated-mime-types.json` is generated by running `resources/generated-mime-types.py`. Modify the latter to correct the former.
+
+These tests are used by resources in this directory to test various aspects of MIME types.
+
+## MIME type groups
+
+`resources/mime-groups.json` contains MIME type group-membership tests. The tests are encoded as a JSON array. String values in the array serve as documentation. All other values are objects with the following fields:
+
+* `input`: The MIME type to test.
+* `groups`: An array of zero or more groups to which the MIME type belongs.
+
+In order to pass the tests an implementation must treat each MIME type as belonging to the exact set of groups listed, with no additions or omissions.
+
+Note: As MIME type groups are used only while determining the computed MIME type of a resource and are not exposed in any API, no browser-based test harness is available.
diff --git a/testing/web-platform/tests/mimesniff/mime-types/charset-parameter.window.js b/testing/web-platform/tests/mimesniff/mime-types/charset-parameter.window.js
new file mode 100644
index 0000000000..923c3a3df0
--- /dev/null
+++ b/testing/web-platform/tests/mimesniff/mime-types/charset-parameter.window.js
@@ -0,0 +1,61 @@
+// META: timeout=long
+
+promise_test(() => {
+  // Don't load generated-mime-types.json as none of them are navigable
+  return fetch("resources/mime-types.json").then(res => res.json().then(runTests));
+}, "Loading data…");
+
+function isByteCompatible(str) {
+  // see https://fetch.spec.whatwg.org/#concept-header-value-normalize
+  if(/^[\u0009\u0020\u000A\u000D]+|[\u0009\u0020\u000A\u000D]+$/.test(str)) {
+    return "header-value-incompatible";
+  }
+
+  for(let i = 0; i < str.length; i++) {
+    const charCode = str.charCodeAt(i);
+    // See https://fetch.spec.whatwg.org/#concept-header-value
+    if(charCode > 0xFF) {
+      return "incompatible";
+    } else if(charCode === 0x00 || charCode === 0x0A || charCode === 0x0D) {
+      return "header-value-error";
+    }
+  }
+  return "compatible";
+}
+
+function encodeForURL(str) {
+  let output = "";
+  for(let i = 0; i < str.length; i++) {
+    const char = str.charCodeAt(i);
+    if(char > 0xFF) {
+      throw new Error("We cannot deal with input that is not latin1");
+    } else  {
+      output += "%" + char.toString(16).padStart(2, "0");
+    }
+  }
+  return output;
+}
+
+function runTests(tests) {
+  tests.forEach(val => {
+    if(typeof val === "string" || val.navigable === undefined || val.encoding === undefined || isByteCompatible(val.input) !== "compatible") {
+      return;
+    }
+    const mime = val.input;
+    async_test(t => {
+      const frame = document.createElement("iframe"),
+            expectedEncoding = val.encoding === null ? "UTF-8" : val.encoding;
+      t.add_cleanup(() => frame.remove());
+      frame.onload = t.step_func(() => {
+        if(frame.contentWindow.location.href === "about:blank") {
+          return;
+        }
+        // Edge fails all these tests due to not using the correct encoding label.
+        assert_equals(frame.contentDocument.characterSet, expectedEncoding);
+        t.done();
+      });
+      frame.src = "resources/mime-charset.py?type=" + encodeForURL(mime);
+      document.body.appendChild(frame);
+    }, mime);
+  });
+}
diff --git a/testing/web-platform/tests/mimesniff/mime-types/parsing.any.js b/testing/web-platform/tests/mimesniff/mime-types/parsing.any.js
new file mode 100644
index 0000000000..93be6bfb13
--- /dev/null
+++ b/testing/web-platform/tests/mimesniff/mime-types/parsing.any.js
@@ -0,0 +1,57 @@
+// META: timeout=long
+
+promise_test(() => {
+  return Promise.all([
+    fetch("resources/mime-types.json"),
+    fetch("resources/generated-mime-types.json")
+  ]).then(([res, res2]) => res.json().then(runTests).then(() => res2.json().then(runTests)));
+}, "Loading data…");
+
+function isByteCompatible(str) {
+  // see https://fetch.spec.whatwg.org/#concept-header-value-normalize
+  if(/^[\u0009\u0020\u000A\u000D]+|[\u0009\u0020\u000A\u000D]+$/.test(str)) {
+    return "header-value-incompatible";
+  }
+
+  for(let i = 0; i < str.length; i++) {
+    const charCode = str.charCodeAt(i);
+    // See https://fetch.spec.whatwg.org/#concept-header-value
+    if(charCode > 0xFF) {
+      return "incompatible";
+    } else if(charCode === 0x00 || charCode === 0x0A || charCode === 0x0D) {
+      return "header-value-error";
+    }
+  }
+  return "compatible";
+}
+
+function runTests(tests) {
+  tests.forEach(val => {
+    if(typeof val === "string") {
+      return;
+    }
+    const output = val.output === null ? "" : val.output
+    test(() => {
+      assert_equals(new Blob([], { type: val.input}).type, output, "Blob");
+      assert_equals(new File([], "noname", { type: val.input}).type, output, "File");
+    }, val.input + " (Blob/File)");
+
+    const compatibleNess = isByteCompatible(val.input);
+    if(compatibleNess === "header-value-incompatible") {
+      return;
+    }
+
+    promise_test(() => {
+      if(compatibleNess === "incompatible" || compatibleNess === "header-value-error") {
+        assert_throws_js(TypeError, () => new Request("about:blank", { headers: [["Content-Type", val.input]] }));
+        assert_throws_js(TypeError, () => new Response(null, { headers: [["Content-Type", val.input]] }));
+        return Promise.resolve();
+      } else {
+        return Promise.all([
+          new Request("about:blank", { headers: [["Content-Type", val.input]] }).blob().then(blob => assert_equals(blob.type, output)),
+          new Response(null, { headers: [["Content-Type", val.input]] }).blob().then(blob => assert_equals(blob.type, output))
+        ]);
+      }
+    }, val.input + " (Request/Response)");
+  });
+}
diff --git a/testing/web-platform/tests/mimesniff/mime-types/resources/generated-mime-types.json b/testing/web-platform/tests/mimesniff/mime-types/resources/generated-mime-types.json
new file mode 100644
index 0000000000..f8934da46a
--- /dev/null
+++ b/testing/web-platform/tests/mimesniff/mime-types/resources/generated-mime-types.json
@@ -0,0 +1,3526 @@
+[
+  {
+    "input": "\u0000/x",
+    "output": null
+  },
+  {
+    "input": "x/\u0000",
+    "output": null
+  },
+  {
+    "input": "x/x;\u0000=x;bonus=x",
+    "output": "x/x;bonus=x"
+  },
+  {
+    "input": "x/x;x=\u0000;bonus=x",
+    "output": "x/x;bonus=x"
+  },
+  {
+    "input": "x/x;x=\"\u0000\";bonus=x",
+    "output": "x/x;bonus=x"
+  },
+  {
+    "input": "\u0001/x",
+    "output": null
+  },
+  {
+    "input": "x/\u0001",
+    "output": null
+  },
+  {
+    "input": "x/x;\u0001=x;bonus=x",
+    "output": "x/x;bonus=x"
+  },
+  {
+    "input": "x/x;x=\u0001;bonus=x",
+    "output": "x/x;bonus=x"
+  },
+  {
+    "input": "x/x;x=\"\u0001\";bonus=x",
+    "output": "x/x;bonus=x"
+  },
+  {
+    "input": "\u0002/x",
+    "output": null
+  },
+  {
+    "input": "x/\u0002",
+    "output": null
+  },
+  {
+    "input": "x/x;\u0002=x;bonus=x",
+    "output": "x/x;bonus=x"
+  },
+  {
+    "input": "x/x;x=\u0002;bonus=x",
+    "output": "x/x;bonus=x"
+  },
+  {
+    "input": "x/x;x=\"\u0002\";bonus=x",
+    "output": "x/x;bonus=x"
+  },
+  {
+    "input": "\u0003/x",
+    "output": null
+  },
+  {
+    "input": "x/\u0003",
+    "output": null
+  },
+  {
+    "input": "x/x;\u0003=x;bonus=x",
+    "output": "x/x;bonus=x"
+  },
+  {
+    "input": "x/x;x=\u0003;bonus=x",
+    "output": "x/x;bonus=x"
+  },
+  {
+    "input": "x/x;x=\"\u0003\";bonus=x",
+    "output": "x/x;bonus=x"
+  },
+  {
+    "input": "\u0004/x",
+    "output": null
+  },
+  {
+    "input": "x/\u0004",
+    "output": null
+  },
+  {
+    "input": "x/x;\u0004=x;bonus=x",
+    "output": "x/x;bonus=x"
+  },
+  {
+    "input": "x/x;x=\u0004;bonus=x",
+    "output": "x/x;bonus=x"
+  },
+  {
+    "input": "x/x;x=\"\u0004\";bonus=x",
+    "output": "x/x;bonus=x"
+  },
+  {
+    "input": "\u0005/x",
+    "output": null
+  },
+  {
+    "input": "x/\u0005",
+    "output": null
+  },
+  {
+    "input": "x/x;\u0005=x;bonus=x",
+    "output": "x/x;bonus=x"
+  },
+  {
+    "input": "x/x;x=\u0005;bonus=x",
+    "output": "x/x;bonus=x"
+  },
+  {
+    "input": "x/x;x=\"\u0005\";bonus=x",
+    "output": "x/x;bonus=x"
+  },
+  {
+    "input": "\u0006/x",
+    "output": null
+  },
+  {
+    "input": "x/\u0006",
+    "output": null
+  },
+  {
+    "input": "x/x;\u0006=x;bonus=x",
+    "output": "x/x;bonus=x"
+  },
+  {
+    "input": "x/x;x=\u0006;bonus=x",
+    "output": "x/x;bonus=x"
+  },
+  {
+    "input": "x/x;x=\"\u0006\";bonus=x",
+    "output": "x/x;bonus=x"
+  },
+  {
+    "input": "\u0007/x",
+    "output": null
+  },
+  {
+    "input": "x/\u0007",
+    "output": null
+  },
+  {
+    "input": "x/x;\u0007=x;bonus=x",
+    "output": "x/x;bonus=x"
+  },
+  {
+    "input": "x/x;x=\u0007;bonus=x",
+    "output": "x/x;bonus=x"
+  },
+  {
+    "input": "x/x;x=\"\u0007\";bonus=x",
+    "output": "x/x;bonus=x"
+  },
+  {
+    "input": "\b/x",
+    "output": null
+  },
+  {
+    "input": "x/\b",
+    "output": null
+  },
+  {
+    "input": "x/x;\b=x;bonus=x",
+    "output": "x/x;bonus=x"
+  },
+  {
+    "input": "x/x;x=\b;bonus=x",
+    "output": "x/x;bonus=x"
+  },
+  {
+    "input": "x/x;x=\"\b\";bonus=x",
+    "output": "x/x;bonus=x"
+  },
+  {
+    "input": "\t/x",
+    "output": null
+  },
+  {
+    "input": "x/\t",
+    "output": null
+  },
+  {
+    "input": "x/x;\t=x;bonus=x",
+    "output": "x/x;bonus=x"
+  },
+  {
+    "input": "\n/x",
+    "output": null
+  },
+  {
+    "input": "x/\n",
+    "output": null
+  },
+  {
+    "input": "x/x;\n=x;bonus=x",
+    "output": "x/x;bonus=x"
+  },
+  {
+    "input": "x/x;x=\n;bonus=x",
+    "output": "x/x;bonus=x"
+  },
+  {
+    "input": "x/x;x=\"\n\";bonus=x",
+    "output": "x/x;bonus=x"
+  },
+  {
+    "input": "\u000b/x",
+    "output": null
+  },
+  {
+    "input": "x/\u000b",
+    "output": null
+  },
+  {
+    "input": "x/x;\u000b=x;bonus=x",
+    "output": "x/x;bonus=x"
+  },
+  {
+    "input": "x/x;x=\u000b;bonus=x",
+    "output": "x/x;bonus=x"
+  },
+  {
+    "input": "x/x;x=\"\u000b\";bonus=x",
+    "output": "x/x;bonus=x"
+  },
+  {
+    "input": "\f/x",
+    "output": null
+  },
+  {
+    "input": "x/\f",
+    "output": null
+  },
+  {
+    "input": "x/x;\f=x;bonus=x",
+    "output": "x/x;bonus=x"
+  },
+  {
+    "input": "x/x;x=\f;bonus=x",
+    "output": "x/x;bonus=x"
+  },
+  {
+    "input": "x/x;x=\"\f\";bonus=x",
+    "output": "x/x;bonus=x"
+  },
+  {
+    "input": "\r/x",
+    "output": null
+  },
+  {
+    "input": "x/\r",
+    "output": null
+  },
+  {
+    "input": "x/x;\r=x;bonus=x",
+    "output": "x/x;bonus=x"
+  },
+  {
+    "input": "x/x;x=\r;bonus=x",
+    "output": "x/x;bonus=x"
+  },
+  {
+    "input": "x/x;x=\"\r\";bonus=x",
+    "output": "x/x;bonus=x"
+  },
+  {
+    "input": "\u000e/x",
+    "output": null
+  },
+  {
+    "input": "x/\u000e",
+    "output": null
+  },
+  {
+    "input": "x/x;\u000e=x;bonus=x",
+    "output": "x/x;bonus=x"
+  },
+  {
+    "input": "x/x;x=\u000e;bonus=x",
+    "output": "x/x;bonus=x"
+  },
+  {
+    "input": "x/x;x=\"\u000e\";bonus=x",
+    "output": "x/x;bonus=x"
+  },
+  {
+    "input": "\u000f/x",
+    "output": null
+  },
+  {
+    "input": "x/\u000f",
+    "output": null
+  },
+  {
+    "input": "x/x;\u000f=x;bonus=x",
+    "output": "x/x;bonus=x"
+  },
+  {
+    "input": "x/x;x=\u000f;bonus=x",
+    "output": "x/x;bonus=x"
+  },
+  {
+    "input": "x/x;x=\"\u000f\";bonus=x",
+    "output": "x/x;bonus=x"
+  },
+  {
+    "input": "\u0010/x",
+    "output": null
+  },
+  {
+    "input": "x/\u0010",
+    "output": null
+  },
+  {
+    "input": "x/x;\u0010=x;bonus=x",
+    "output": "x/x;bonus=x"
+  },
+  {
+    "input": "x/x;x=\u0010;bonus=x",
+    "output": "x/x;bonus=x"
+  },
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+  {
+    "input": "x/x;\u00ee=x;bonus=x",
+    "output": "x/x;bonus=x"
+  },
+  {
+    "input": "x/x;x=\u00ee;bonus=x",
+    "output": "x/x;x=\"\u00ee\";bonus=x"
+  },
+  {
+    "input": "x/x;x=\"\u00ee\";bonus=x",
+    "output": "x/x;x=\"\u00ee\";bonus=x"
+  },
+  {
+    "input": "\u00ef/x",
+    "output": null
+  },
+  {
+    "input": "x/\u00ef",
+    "output": null
+  },
+  {
+    "input": "x/x;\u00ef=x;bonus=x",
+    "output": "x/x;bonus=x"
+  },
+  {
+    "input": "x/x;x=\u00ef;bonus=x",
+    "output": "x/x;x=\"\u00ef\";bonus=x"
+  },
+  {
+    "input": "x/x;x=\"\u00ef\";bonus=x",
+    "output": "x/x;x=\"\u00ef\";bonus=x"
+  },
+  {
+    "input": "\u00f0/x",
+    "output": null
+  },
+  {
+    "input": "x/\u00f0",
+    "output": null
+  },
+  {
+    "input": "x/x;\u00f0=x;bonus=x",
+    "output": "x/x;bonus=x"
+  },
+  {
+    "input": "x/x;x=\u00f0;bonus=x",
+    "output": "x/x;x=\"\u00f0\";bonus=x"
+  },
+  {
+    "input": "x/x;x=\"\u00f0\";bonus=x",
+    "output": "x/x;x=\"\u00f0\";bonus=x"
+  },
+  {
+    "input": "\u00f1/x",
+    "output": null
+  },
+  {
+    "input": "x/\u00f1",
+    "output": null
+  },
+  {
+    "input": "x/x;\u00f1=x;bonus=x",
+    "output": "x/x;bonus=x"
+  },
+  {
+    "input": "x/x;x=\u00f1;bonus=x",
+    "output": "x/x;x=\"\u00f1\";bonus=x"
+  },
+  {
+    "input": "x/x;x=\"\u00f1\";bonus=x",
+    "output": "x/x;x=\"\u00f1\";bonus=x"
+  },
+  {
+    "input": "\u00f2/x",
+    "output": null
+  },
+  {
+    "input": "x/\u00f2",
+    "output": null
+  },
+  {
+    "input": "x/x;\u00f2=x;bonus=x",
+    "output": "x/x;bonus=x"
+  },
+  {
+    "input": "x/x;x=\u00f2;bonus=x",
+    "output": "x/x;x=\"\u00f2\";bonus=x"
+  },
+  {
+    "input": "x/x;x=\"\u00f2\";bonus=x",
+    "output": "x/x;x=\"\u00f2\";bonus=x"
+  },
+  {
+    "input": "\u00f3/x",
+    "output": null
+  },
+  {
+    "input": "x/\u00f3",
+    "output": null
+  },
+  {
+    "input": "x/x;\u00f3=x;bonus=x",
+    "output": "x/x;bonus=x"
+  },
+  {
+    "input": "x/x;x=\u00f3;bonus=x",
+    "output": "x/x;x=\"\u00f3\";bonus=x"
+  },
+  {
+    "input": "x/x;x=\"\u00f3\";bonus=x",
+    "output": "x/x;x=\"\u00f3\";bonus=x"
+  },
+  {
+    "input": "\u00f4/x",
+    "output": null
+  },
+  {
+    "input": "x/\u00f4",
+    "output": null
+  },
+  {
+    "input": "x/x;\u00f4=x;bonus=x",
+    "output": "x/x;bonus=x"
+  },
+  {
+    "input": "x/x;x=\u00f4;bonus=x",
+    "output": "x/x;x=\"\u00f4\";bonus=x"
+  },
+  {
+    "input": "x/x;x=\"\u00f4\";bonus=x",
+    "output": "x/x;x=\"\u00f4\";bonus=x"
+  },
+  {
+    "input": "\u00f5/x",
+    "output": null
+  },
+  {
+    "input": "x/\u00f5",
+    "output": null
+  },
+  {
+    "input": "x/x;\u00f5=x;bonus=x",
+    "output": "x/x;bonus=x"
+  },
+  {
+    "input": "x/x;x=\u00f5;bonus=x",
+    "output": "x/x;x=\"\u00f5\";bonus=x"
+  },
+  {
+    "input": "x/x;x=\"\u00f5\";bonus=x",
+    "output": "x/x;x=\"\u00f5\";bonus=x"
+  },
+  {
+    "input": "\u00f6/x",
+    "output": null
+  },
+  {
+    "input": "x/\u00f6",
+    "output": null
+  },
+  {
+    "input": "x/x;\u00f6=x;bonus=x",
+    "output": "x/x;bonus=x"
+  },
+  {
+    "input": "x/x;x=\u00f6;bonus=x",
+    "output": "x/x;x=\"\u00f6\";bonus=x"
+  },
+  {
+    "input": "x/x;x=\"\u00f6\";bonus=x",
+    "output": "x/x;x=\"\u00f6\";bonus=x"
+  },
+  {
+    "input": "\u00f7/x",
+    "output": null
+  },
+  {
+    "input": "x/\u00f7",
+    "output": null
+  },
+  {
+    "input": "x/x;\u00f7=x;bonus=x",
+    "output": "x/x;bonus=x"
+  },
+  {
+    "input": "x/x;x=\u00f7;bonus=x",
+    "output": "x/x;x=\"\u00f7\";bonus=x"
+  },
+  {
+    "input": "x/x;x=\"\u00f7\";bonus=x",
+    "output": "x/x;x=\"\u00f7\";bonus=x"
+  },
+  {
+    "input": "\u00f8/x",
+    "output": null
+  },
+  {
+    "input": "x/\u00f8",
+    "output": null
+  },
+  {
+    "input": "x/x;\u00f8=x;bonus=x",
+    "output": "x/x;bonus=x"
+  },
+  {
+    "input": "x/x;x=\u00f8;bonus=x",
+    "output": "x/x;x=\"\u00f8\";bonus=x"
+  },
+  {
+    "input": "x/x;x=\"\u00f8\";bonus=x",
+    "output": "x/x;x=\"\u00f8\";bonus=x"
+  },
+  {
+    "input": "\u00f9/x",
+    "output": null
+  },
+  {
+    "input": "x/\u00f9",
+    "output": null
+  },
+  {
+    "input": "x/x;\u00f9=x;bonus=x",
+    "output": "x/x;bonus=x"
+  },
+  {
+    "input": "x/x;x=\u00f9;bonus=x",
+    "output": "x/x;x=\"\u00f9\";bonus=x"
+  },
+  {
+    "input": "x/x;x=\"\u00f9\";bonus=x",
+    "output": "x/x;x=\"\u00f9\";bonus=x"
+  },
+  {
+    "input": "\u00fa/x",
+    "output": null
+  },
+  {
+    "input": "x/\u00fa",
+    "output": null
+  },
+  {
+    "input": "x/x;\u00fa=x;bonus=x",
+    "output": "x/x;bonus=x"
+  },
+  {
+    "input": "x/x;x=\u00fa;bonus=x",
+    "output": "x/x;x=\"\u00fa\";bonus=x"
+  },
+  {
+    "input": "x/x;x=\"\u00fa\";bonus=x",
+    "output": "x/x;x=\"\u00fa\";bonus=x"
+  },
+  {
+    "input": "\u00fb/x",
+    "output": null
+  },
+  {
+    "input": "x/\u00fb",
+    "output": null
+  },
+  {
+    "input": "x/x;\u00fb=x;bonus=x",
+    "output": "x/x;bonus=x"
+  },
+  {
+    "input": "x/x;x=\u00fb;bonus=x",
+    "output": "x/x;x=\"\u00fb\";bonus=x"
+  },
+  {
+    "input": "x/x;x=\"\u00fb\";bonus=x",
+    "output": "x/x;x=\"\u00fb\";bonus=x"
+  },
+  {
+    "input": "\u00fc/x",
+    "output": null
+  },
+  {
+    "input": "x/\u00fc",
+    "output": null
+  },
+  {
+    "input": "x/x;\u00fc=x;bonus=x",
+    "output": "x/x;bonus=x"
+  },
+  {
+    "input": "x/x;x=\u00fc;bonus=x",
+    "output": "x/x;x=\"\u00fc\";bonus=x"
+  },
+  {
+    "input": "x/x;x=\"\u00fc\";bonus=x",
+    "output": "x/x;x=\"\u00fc\";bonus=x"
+  },
+  {
+    "input": "\u00fd/x",
+    "output": null
+  },
+  {
+    "input": "x/\u00fd",
+    "output": null
+  },
+  {
+    "input": "x/x;\u00fd=x;bonus=x",
+    "output": "x/x;bonus=x"
+  },
+  {
+    "input": "x/x;x=\u00fd;bonus=x",
+    "output": "x/x;x=\"\u00fd\";bonus=x"
+  },
+  {
+    "input": "x/x;x=\"\u00fd\";bonus=x",
+    "output": "x/x;x=\"\u00fd\";bonus=x"
+  },
+  {
+    "input": "\u00fe/x",
+    "output": null
+  },
+  {
+    "input": "x/\u00fe",
+    "output": null
+  },
+  {
+    "input": "x/x;\u00fe=x;bonus=x",
+    "output": "x/x;bonus=x"
+  },
+  {
+    "input": "x/x;x=\u00fe;bonus=x",
+    "output": "x/x;x=\"\u00fe\";bonus=x"
+  },
+  {
+    "input": "x/x;x=\"\u00fe\";bonus=x",
+    "output": "x/x;x=\"\u00fe\";bonus=x"
+  },
+  {
+    "input": "\u00ff/x",
+    "output": null
+  },
+  {
+    "input": "x/\u00ff",
+    "output": null
+  },
+  {
+    "input": "x/x;\u00ff=x;bonus=x",
+    "output": "x/x;bonus=x"
+  },
+  {
+    "input": "x/x;x=\u00ff;bonus=x",
+    "output": "x/x;x=\"\u00ff\";bonus=x"
+  },
+  {
+    "input": "x/x;x=\"\u00ff\";bonus=x",
+    "output": "x/x;x=\"\u00ff\";bonus=x"
+  }
+]
diff --git a/testing/web-platform/tests/mimesniff/mime-types/resources/generated-mime-types.py b/testing/web-platform/tests/mimesniff/mime-types/resources/generated-mime-types.py
new file mode 100644
index 0000000000..5d0e26c8b8
--- /dev/null
+++ b/testing/web-platform/tests/mimesniff/mime-types/resources/generated-mime-types.py
@@ -0,0 +1,48 @@
+import json
+import os
+
+here = os.path.dirname(__file__)
+
+def isHTTPTokenCodePoint(cp):
+    if cp in (0x21, 0x23, 0x24, 0x25, 0x26, 0x27, 0x2A, 0x2B, 0x2D, 0x2E, 0x5E, 0x5F, 0x60, 0x7C, 0x7E) or (cp >= 0x30 and cp <= 0x39) or (cp >= 0x41 and cp <= 0x5A) or (cp >= 0x61 and cp <= 0x7A):
+        return True
+    else:
+        return False
+
+def isHTTPQuotedStringTokenCodePoint(cp):
+    if cp == 0x09 or (cp >= 0x20 and cp <= 0x7E) or (cp >= 0x80 and cp <= 0xFF):
+        return True
+    else:
+        return False
+
+tests = []
+
+for cp in range(0x00, 0x100):
+    if isHTTPTokenCodePoint(cp):
+        continue
+    for scenario in ("type", "subtype", "name", "value"):
+        if scenario == "type" or scenario == "subtype":
+            if cp == 0x2F: # /
+                continue
+            if scenario == "type":
+                test = chr(cp) + "/x"
+            else:
+                test = "x/" + chr(cp)
+            tests.append({"input": test, "output": None})
+        elif scenario == "name":
+            if cp == 0x3B or cp == 0x3D: # ; =
+                continue
+            tests.append({"input": "x/x;" + chr(cp) + "=x;bonus=x", "output": "x/x;bonus=x"})
+        elif scenario == "value":
+            if cp == 0x09 or cp == 0x20 or cp == 0x22 or cp == 0x3B or cp == 0x5C: # TAB SP " ; \
+                continue
+            if isHTTPQuotedStringTokenCodePoint(cp):
+                testOutput = "x/x;x=\"" + chr(cp) + "\";bonus=x"
+            else:
+                testOutput = "x/x;bonus=x"
+            tests.append({"input": "x/x;x=" + chr(cp) + ";bonus=x", "output": testOutput})
+            tests.append({"input": "x/x;x=\"" + chr(cp) + "\";bonus=x", "output": testOutput})
+
+handle = open(os.path.join(here, "generated-mime-types.json"), "w")
+handle.write(json.dumps(tests, indent=2, separators=(',', ': ')))
+handle.write("\n")
diff --git a/testing/web-platform/tests/mimesniff/mime-types/resources/mime-charset.py b/testing/web-platform/tests/mimesniff/mime-types/resources/mime-charset.py
new file mode 100644
index 0000000000..bcc3dc3a83
--- /dev/null
+++ b/testing/web-platform/tests/mimesniff/mime-types/resources/mime-charset.py
@@ -0,0 +1,19 @@
+from wptserve.utils import isomorphic_encode
+
+def main(request, response):
+    content = b"<meta charset=utf-8>\n<script>document.write(document.characterSet)</script>"
+
+    # This uses the following rather than
+    #   response.headers.set("Content-Type", request.GET.first("type"));
+    #   response.content = content
+    # to work around https://github.com/web-platform-tests/wpt/issues/8372.
+
+    response.add_required_headers = False
+    output = b"HTTP/1.1 200 OK\r\n"
+    output += b"Content-Length: " + isomorphic_encode(str(len(content))) + b"\r\n"
+    output += b"Content-Type: " + request.GET.first(b"type") + b"\r\n"
+    output += b"Connection: close\r\n"
+    output += b"\r\n"
+    output += content
+    response.writer.write(output)
+    response.close_connection = True
diff --git a/testing/web-platform/tests/mimesniff/mime-types/resources/mime-groups.json b/testing/web-platform/tests/mimesniff/mime-types/resources/mime-groups.json
new file mode 100644
index 0000000000..1b5d7d54f8
--- /dev/null
+++ b/testing/web-platform/tests/mimesniff/mime-types/resources/mime-groups.json
@@ -0,0 +1,159 @@
+[
+    {"input": "x/x",                               "groups": []},
+    {"input": "image/x",                           "groups": ["image"]},
+    {"input": "audio/x",                           "groups": ["audio or video"]},
+    {"input": "video/x",                           "groups": ["audio or video"]},
+    {"input": "application/ogg",                   "groups": ["audio or video"]},
+    {"input": "application/ogg;x=x",               "groups": ["audio or video"]},
+    {"input": "font/x",                            "groups": ["font"]},
+    {"input": "application/font-cff",              "groups": ["font"]},
+    {"input": "application/font-cff;x=x",          "groups": ["font"]},
+    {"input": "application/font-off",              "groups": ["font"]},
+    {"input": "application/font-off;x=x",          "groups": ["font"]},
+    {"input": "application/font-sfnt",             "groups": ["font"]},
+    {"input": "application/font-sfnt;x=x",         "groups": ["font"]},
+    {"input": "application/font-ttf",              "groups": ["font"]},
+    {"input": "application/font-ttf;x=x",          "groups": ["font"]},
+    {"input": "application/font-woff",             "groups": ["font"]},
+    {"input": "application/font-woff;x=x",         "groups": ["font"]},
+    {"input": "application/vnd.ms-fontobject",     "groups": ["font"]},
+    {"input": "application/vnd.ms-fontobject;x=x", "groups": ["font"]},
+    {"input": "application/vnd.ms-opentype",       "groups": ["font"]},
+    {"input": "application/vnd.ms-opentype;x=x",   "groups": ["font"]},
+    {"input": "x/x+zip",                           "groups": ["ZIP-based"]},
+    {"input": "x/x+zip;x=x",                       "groups": ["ZIP-based"]},
+    {"input": "x/+zip",                            "groups": ["ZIP-based"]},
+    {"input": "x/+zip;x=x",                        "groups": ["ZIP-based"]},
+    "application/zip also matches the archive group",
+    {"input": "application/zip",                   "groups": ["ZIP-based", "archive"]},
+    {"input": "application/zip;x=x",               "groups": ["ZIP-based", "archive"]},
+    {"input": "application/x-rar-compressed",      "groups": ["archive"]},
+    {"input": "application/x-rar-compressed;x=x",  "groups": ["archive"]},
+    {"input": "application/x-gzip",                "groups": ["archive"]},
+    {"input": "application/x-gzip;x=x",            "groups": ["archive"]},
+    "XML is also scriptable",
+    {"input": "x/x+xml",                           "groups": ["XML", "scriptable"]},
+    {"input": "x/x+xml;x=x",                       "groups": ["XML", "scriptable"]},
+    {"input": "x/+xml",                            "groups": ["XML", "scriptable"]},
+    {"input": "x/+xml;x=x",                        "groups": ["XML", "scriptable"]},
+    {"input": "application/xml",                   "groups": ["XML", "scriptable"]},
+    {"input": "application/xml;x=x",               "groups": ["XML", "scriptable"]},
+    {"input": "text/xml",                          "groups": ["XML", "scriptable"]},
+    {"input": "text/xml;x=x",                      "groups": ["XML", "scriptable"]},
+    "HTML is scriptable",
+    {"input": "text/html",                         "groups": ["HTML", "scriptable"]},
+    {"input": "text/html;x=x",                     "groups": ["HTML", "scriptable"]},
+    "PDF is scriptable",
+    {"input": "application/pdf",                   "groups": ["scriptable"]},
+    {"input": "application/pdf;x=x",               "groups": ["scriptable"]},
+    {"input": "application/ecmascript",            "groups": ["JavaScript"]},
+    {"input": "application/ecmascript;x=x",        "groups": ["JavaScript"]},
+    {"input": "application/javascript",            "groups": ["JavaScript"]},
+    {"input": "application/javascript;x=x",        "groups": ["JavaScript"]},
+    {"input": "application/x-ecmascript",          "groups": ["JavaScript"]},
+    {"input": "application/x-ecmascript;x=x",      "groups": ["JavaScript"]},
+    {"input": "application/x-javascript",          "groups": ["JavaScript"]},
+    {"input": "application/x-javascript;x=x",      "groups": ["JavaScript"]},
+    {"input": "text/ecmascript",                   "groups": ["JavaScript"]},
+    {"input": "text/ecmascript;x=x",               "groups": ["JavaScript"]},
+    {"input": "text/javascript",                   "groups": ["JavaScript"]},
+    {"input": "text/javascript;x=x",               "groups": ["JavaScript"]},
+    {"input": "text/javascript1.0",                "groups": ["JavaScript"]},
+    {"input": "text/javascript1.0;x=x",            "groups": ["JavaScript"]},
+    {"input": "text/javascript1.1",                "groups": ["JavaScript"]},
+    {"input": "text/javascript1.1;x=x",            "groups": ["JavaScript"]},
+    {"input": "text/javascript1.2",                "groups": ["JavaScript"]},
+    {"input": "text/javascript1.2;x=x",            "groups": ["JavaScript"]},
+    {"input": "text/javascript1.3",                "groups": ["JavaScript"]},
+    {"input": "text/javascript1.3;x=x",            "groups": ["JavaScript"]},
+    {"input": "text/javascript1.4",                "groups": ["JavaScript"]},
+    {"input": "text/javascript1.4;x=x",            "groups": ["JavaScript"]},
+    {"input": "text/javascript1.5",                "groups": ["JavaScript"]},
+    {"input": "text/javascript1.5;x=x",            "groups": ["JavaScript"]},
+    {"input": "text/jscript",                      "groups": ["JavaScript"]},
+    {"input": "text/jscript;x=x",                  "groups": ["JavaScript"]},
+    {"input": "text/livescript",                   "groups": ["JavaScript"]},
+    {"input": "text/livescript;x=x",               "groups": ["JavaScript"]},
+    {"input": "text/x-ecmascript",                 "groups": ["JavaScript"]},
+    {"input": "text/x-ecmascript;x=x",             "groups": ["JavaScript"]},
+    {"input": "text/x-javascript",                 "groups": ["JavaScript"]},
+    {"input": "text/x-javascript;x=x",             "groups": ["JavaScript"]},
+    {"input": "x/x+json",                          "groups": ["JSON"]},
+    {"input": "x/x+json;x=x",                      "groups": ["JSON"]},
+    {"input": "x/+json",                           "groups": ["JSON"]},
+    {"input": "x/+json;x=x",                       "groups": ["JSON"]},
+    {"input": "application/json",                  "groups": ["JSON"]},
+    {"input": "application/json;x=x",              "groups": ["JSON"]},
+    {"input": "text/json",                         "groups": ["JSON"]},
+    {"input": "text/json;x=x",                     "groups": ["JSON"]},
+    {"input": "x/x;type=image",                    "groups": []},
+    {"input": "x/x;type=audio",                    "groups": []},
+    {"input": "x/x;type=video",                    "groups": []},
+    {"input": "x/x;type=font",                     "groups": []},
+    {"input": "ximage/x",                          "groups": []},
+    {"input": "xaudio/x",                          "groups": []},
+    {"input": "xvideo/x",                          "groups": []},
+    {"input": "xfont/x",                           "groups": []},
+    {"input": "imagex/x",                          "groups": []},
+    {"input": "audiox/x",                          "groups": []},
+    {"input": "videox/x",                          "groups": []},
+    {"input": "fontx/x",                           "groups": []},
+    {"input": "x/image",                           "groups": []},
+    {"input": "x/png",                             "groups": []},
+    {"input": "x/audio",                           "groups": []},
+    {"input": "x/video",                           "groups": []},
+    {"input": "x/ogg",                             "groups": []},
+    {"input": "x/font",                            "groups": []},
+    {"input": "x/woff",                            "groups": []},
+    {"input": "x/font-ttf",                        "groups": []},
+    {"input": "x/x;x=\"application/font-ttf\"",    "groups": []},
+    {"input": "x/zip",                             "groups": []},
+    {"input": "x/x-gzip",                          "groups": []},
+    {"input": "x/x-rar-compressed",                "groups": []},
+    {"input": "x/x;x=\"application/x-gip\"",       "groups": []},
+    {"input": "x+zip/x",                           "groups": []},
+    {"input": "x/x;x=x+zip",                       "groups": []},
+    {"input": "x/x;subtype=x+zip",                 "groups": []},
+    {"input": "x/xml",                             "groups": []},
+    {"input": "x/x;x=\"application/xml\"",         "groups": []},
+    {"input": "x+xml/x",                           "groups": []},
+    {"input": "x/x;x=x+xml",                       "groups": []},
+    {"input": "x/x;subtype=x+xml",                 "groups": []},
+    {"input": "x/pdf",                             "groups": []},
+    {"input": "x/html",                            "groups": []},
+    {"input": "x/ecmascript",                      "groups": []},
+    {"input": "x/javascript",                      "groups": []},
+    {"input": "x/x-ecmascript",                    "groups": []},
+    {"input": "x/x-javascript",                    "groups": []},
+    {"input": "x/jscript",                         "groups": []},
+    {"input": "x/livescript",                      "groups": []},
+    {"input": "x/javascript1.0",                   "groups": []},
+    {"input": "x/javascript1.1",                   "groups": []},
+    {"input": "x/javascript1.2",                   "groups": []},
+    {"input": "x/javascript1.3",                   "groups": []},
+    {"input": "x/javascript1.4",                   "groups": []},
+    {"input": "x/javascript1.5",                   "groups": []},
+    {"input": "x/x;x=\"application/javascript\"",  "groups": []},
+    {"input": "x/json",                            "groups": []},
+    {"input": "x/x;x=\"application/json\"",        "groups": []},
+    {"input": "x+json/x",                          "groups": []},
+    {"input": "x/x;x=x+json",                      "groups": []},
+    {"input": "x/x;subtype=x+json",                "groups": []},
+    {"input": "image/png",                         "groups": ["image"]},
+    {"input": "audio/mp4",                         "groups": ["audio or video"]},
+    {"input": "video/mpeg",                        "groups": ["audio or video"]},
+    {"input": "font/woff",                         "groups": ["font"]},
+    "SVG is both image and XML, thus also scriptable",
+    {"input": "image/svg+xml",                     "groups": ["image", "XML", "scriptable"]},
+    "Hypothetical SVG font type",
+    {"input": "font/svg+xml",                      "groups": ["font", "XML", "scriptable"]},
+    "XHTML is not considered HTML",
+    {"input": "application/xhtml+xml",             "groups": ["XML", "scriptable"]},
+    "Subtype longer than 255",
+    {"input": "x/01234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789+zip",
+                                                   "groups": ["ZIP-based"]},
+    {"input": "x/01234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789+xml",
+                                                   "groups": ["XML", "scriptable"]},
+    {"input": "x/01234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789+json",
+                                                   "groups": ["JSON"]}
+]
diff --git a/testing/web-platform/tests/mimesniff/mime-types/resources/mime-types.json b/testing/web-platform/tests/mimesniff/mime-types/resources/mime-types.json
new file mode 100644
index 0000000000..1d0ec64a54
--- /dev/null
+++ b/testing/web-platform/tests/mimesniff/mime-types/resources/mime-types.json
@@ -0,0 +1,397 @@
+[
+  "Basics",
+  {
+    "input": "text/html;charset=gbk",
+    "output": "text/html;charset=gbk",
+    "navigable": true,
+    "encoding": "GBK"
+  },
+  {
+    "input": "TEXT/HTML;CHARSET=GBK",
+    "output": "text/html;charset=GBK",
+    "navigable": true,
+    "encoding": "GBK"
+  },
+  "Legacy comment syntax",
+  {
+    "input": "text/html;charset=gbk(",
+    "output": "text/html;charset=\"gbk(\"",
+    "navigable": true,
+    "encoding": null
+  },
+  {
+    "input": "text/html;x=(;charset=gbk",
+    "output": "text/html;x=\"(\";charset=gbk",
+    "navigable": true,
+    "encoding": "GBK"
+  },
+  "Duplicate parameter",
+  {
+    "input": "text/html;charset=gbk;charset=windows-1255",
+    "output": "text/html;charset=gbk",
+    "navigable": true,
+    "encoding": "GBK"
+  },
+  {
+    "input": "text/html;charset=();charset=GBK",
+    "output": "text/html;charset=\"()\"",
+    "navigable": true,
+    "encoding": null
+  },
+  "Spaces",
+  {
+    "input": "text/html;charset =gbk",
+    "output": "text/html",
+    "navigable": true,
+    "encoding": null
+  },
+  {
+    "input": "text/html ;charset=gbk",
+    "output": "text/html;charset=gbk",
+    "navigable": true,
+    "encoding": "GBK"
+  },
+  {
+    "input": "text/html; charset=gbk",
+    "output": "text/html;charset=gbk",
+    "navigable": true,
+    "encoding": "GBK"
+  },
+  {
+    "input": "text/html;charset= gbk",
+    "output": "text/html;charset=\" gbk\"",
+    "navigable": true,
+    "encoding": "GBK"
+  },
+  {
+    "input": "text/html;charset= \"gbk\"",
+    "output": "text/html;charset=\" \\\"gbk\\\"\"",
+    "navigable": true,
+    "encoding": null
+  },
+  "0x0B and 0x0C",
+  {
+    "input": "text/html;charset=\u000Bgbk",
+    "output": "text/html",
+    "navigable": true,
+    "encoding": null
+  },
+  {
+    "input": "text/html;charset=\u000Cgbk",
+    "output": "text/html",
+    "navigable": true,
+    "encoding": null
+  },
+  {
+    "input": "text/html;\u000Bcharset=gbk",
+    "output": "text/html",
+    "navigable": true,
+    "encoding": null
+  },
+  {
+    "input": "text/html;\u000Ccharset=gbk",
+    "output": "text/html",
+    "navigable": true,
+    "encoding": null
+  },
+  "Single quotes are a token, not a delimiter",
+  {
+    "input": "text/html;charset='gbk'",
+    "output": "text/html;charset='gbk'",
+    "navigable": true,
+    "encoding": null
+  },
+  {
+    "input": "text/html;charset='gbk",
+    "output": "text/html;charset='gbk",
+    "navigable": true,
+    "encoding": null
+  },
+  {
+    "input": "text/html;charset=gbk'",
+    "output": "text/html;charset=gbk'",
+    "navigable": true,
+    "encoding": null
+  },
+  {
+    "input": "text/html;charset=';charset=GBK",
+    "output": "text/html;charset='",
+    "navigable": true,
+    "encoding": null
+  },
+  "Invalid parameters",
+  {
+    "input": "text/html;test;charset=gbk",
+    "output": "text/html;charset=gbk",
+    "navigable": true,
+    "encoding": "GBK"
+  },
+  {
+    "input": "text/html;test=;charset=gbk",
+    "output": "text/html;charset=gbk",
+    "navigable": true,
+    "encoding": "GBK"
+  },
+  {
+    "input": "text/html;';charset=gbk",
+    "output": "text/html;charset=gbk",
+    "navigable": true,
+    "encoding": "GBK"
+  },
+  {
+    "input": "text/html;\";charset=gbk",
+    "output": "text/html;charset=gbk",
+    "navigable": true,
+    "encoding": "GBK"
+  },
+  {
+    "input": "text/html ; ; charset=gbk",
+    "output": "text/html;charset=gbk",
+    "navigable": true,
+    "encoding": "GBK"
+  },
+  {
+    "input": "text/html;;;;charset=gbk",
+    "output": "text/html;charset=gbk",
+    "navigable": true,
+    "encoding": "GBK"
+  },
+  {
+    "input": "text/html;charset= \"\u007F;charset=GBK",
+    "output": "text/html;charset=GBK",
+    "navigable": true,
+    "encoding": "GBK"
+  },
+  {
+    "input": "text/html;charset=\"\u007F;charset=foo\";charset=GBK",
+    "output": "text/html;charset=GBK",
+    "navigable": true,
+    "encoding": "GBK"
+  },
+  "Double quotes",
+  {
+    "input": "text/html;charset=\"gbk\"",
+    "output": "text/html;charset=gbk",
+    "navigable": true,
+    "encoding": "GBK"
+  },
+  {
+    "input": "text/html;charset=\"gbk",
+    "output": "text/html;charset=gbk",
+    "navigable": true,
+    "encoding": "GBK"
+  },
+  {
+    "input": "text/html;charset=gbk\"",
+    "output": "text/html;charset=\"gbk\\\"\"",
+    "navigable": true,
+    "encoding": null
+  },
+  {
+    "input": "text/html;charset=\" gbk\"",
+    "output": "text/html;charset=\" gbk\"",
+    "navigable": true,
+    "encoding": "GBK"
+  },
+  {
+    "input": "text/html;charset=\"gbk \"",
+    "output": "text/html;charset=\"gbk \"",
+    "navigable": true,
+    "encoding": "GBK"
+  },
+  {
+    "input": "text/html;charset=\"\\ gbk\"",
+    "output": "text/html;charset=\" gbk\"",
+    "navigable": true,
+    "encoding": "GBK"
+  },
+  {
+    "input": "text/html;charset=\"\\g\\b\\k\"",
+    "output": "text/html;charset=gbk",
+    "navigable": true,
+    "encoding": "GBK"
+  },
+  {
+    "input": "text/html;charset=\"gbk\"x",
+    "output": "text/html;charset=gbk",
+    "navigable": true,
+    "encoding": "GBK"
+  },
+  {
+    "input": "text/html;charset=\"\";charset=GBK",
+    "output": "text/html;charset=\"\"",
+    "navigable": true,
+    "encoding": null
+  },
+  {
+    "input": "text/html;charset=\";charset=GBK",
+    "output": "text/html;charset=\";charset=GBK\"",
+    "navigable": true,
+    "encoding": null
+  },
+  "Unexpected code points",
+  {
+    "input": "text/html;charset={gbk}",
+    "output": "text/html;charset=\"{gbk}\"",
+    "navigable": true,
+    "encoding": null
+  },
+  "Parameter name longer than 127",
+  {
+    "input": "text/html;0123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789=x;charset=gbk",
+    "output": "text/html;0123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789=x;charset=gbk",
+    "navigable": true,
+    "encoding": "GBK"
+  },
+  "type/subtype longer than 127",
+  {
+    "input": "0123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789/0123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789",
+    "output": "0123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789/0123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789"
+  },
+  "Invalid names",
+  {
+    "input": "text/html;a]=bar;b[=bar;c=bar",
+    "output": "text/html;c=bar"
+  },
+  "Semicolons in value",
+  {
+    "input": "text/html;valid=\";\";foo=bar",
+    "output": "text/html;valid=\";\";foo=bar"
+  },
+  {
+    "input": "text/html;in]valid=\";asd=foo\";foo=bar",
+    "output": "text/html;foo=bar"
+  },
+  "Valid",
+  {
+    "input": "!#$%&'*+-.^_`|~0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz/!#$%&'*+-.^_`|~0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz;!#$%&'*+-.^_`|~0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz=!#$%&'*+-.^_`|~0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz",
+    "output": "!#$%&'*+-.^_`|~0123456789abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyz/!#$%&'*+-.^_`|~0123456789abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyz;!#$%&'*+-.^_`|~0123456789abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyz=!#$%&'*+-.^_`|~0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz"
+  },
+  {
+    "input": "x/x;x=\"\t !\\\"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\\\]^_`abcdefghijklmnopqrstuvwxyz{|}~\u0080\u0081\u0082\u0083\u0084\u0085\u0086\u0087\u0088\u0089\u008A\u008B\u008C\u008D\u008E\u008F\u0090\u0091\u0092\u0093\u0094\u0095\u0096\u0097\u0098\u0099\u009A\u009B\u009C\u009D\u009E\u009F\u00A0\u00A1\u00A2\u00A3\u00A4\u00A5\u00A6\u00A7\u00A8\u00A9\u00AA\u00AB\u00AC\u00AD\u00AE\u00AF\u00B0\u00B1\u00B2\u00B3\u00B4\u00B5\u00B6\u00B7\u00B8\u00B9\u00BA\u00BB\u00BC\u00BD\u00BE\u00BF\u00C0\u00C1\u00C2\u00C3\u00C4\u00C5\u00C6\u00C7\u00C8\u00C9\u00CA\u00CB\u00CC\u00CD\u00CE\u00CF\u00D0\u00D1\u00D2\u00D3\u00D4\u00D5\u00D6\u00D7\u00D8\u00D9\u00DA\u00DB\u00DC\u00DD\u00DE\u00DF\u00E0\u00E1\u00E2\u00E3\u00E4\u00E5\u00E6\u00E7\u00E8\u00E9\u00EA\u00EB\u00EC\u00ED\u00EE\u00EF\u00F0\u00F1\u00F2\u00F3\u00F4\u00F5\u00F6\u00F7\u00F8\u00F9\u00FA\u00FB\u00FC\u00FD\u00FE\u00FF\"",
+    "output": "x/x;x=\"\t !\\\"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\\\]^_`abcdefghijklmnopqrstuvwxyz{|}~\u0080\u0081\u0082\u0083\u0084\u0085\u0086\u0087\u0088\u0089\u008A\u008B\u008C\u008D\u008E\u008F\u0090\u0091\u0092\u0093\u0094\u0095\u0096\u0097\u0098\u0099\u009A\u009B\u009C\u009D\u009E\u009F\u00A0\u00A1\u00A2\u00A3\u00A4\u00A5\u00A6\u00A7\u00A8\u00A9\u00AA\u00AB\u00AC\u00AD\u00AE\u00AF\u00B0\u00B1\u00B2\u00B3\u00B4\u00B5\u00B6\u00B7\u00B8\u00B9\u00BA\u00BB\u00BC\u00BD\u00BE\u00BF\u00C0\u00C1\u00C2\u00C3\u00C4\u00C5\u00C6\u00C7\u00C8\u00C9\u00CA\u00CB\u00CC\u00CD\u00CE\u00CF\u00D0\u00D1\u00D2\u00D3\u00D4\u00D5\u00D6\u00D7\u00D8\u00D9\u00DA\u00DB\u00DC\u00DD\u00DE\u00DF\u00E0\u00E1\u00E2\u00E3\u00E4\u00E5\u00E6\u00E7\u00E8\u00E9\u00EA\u00EB\u00EC\u00ED\u00EE\u00EF\u00F0\u00F1\u00F2\u00F3\u00F4\u00F5\u00F6\u00F7\u00F8\u00F9\u00FA\u00FB\u00FC\u00FD\u00FE\u00FF\""
+  },
+  "End-of-file handling",
+  {
+    "input": "x/x;test",
+    "output": "x/x"
+  },
+  {
+    "input": "x/x;test=\"\\",
+    "output": "x/x;test=\"\\\\\""
+  },
+  "Whitespace (not handled by generated-mime-types.json or above)",
+  {
+    "input": "x/x;x= ",
+    "output": "x/x"
+  },
+  {
+    "input": "x/x;x=\t",
+    "output": "x/x"
+  },
+  {
+    "input": "x/x\n\r\t ;x=x",
+    "output": "x/x;x=x"
+  },
+  {
+    "input": "\n\r\t x/x;x=x\n\r\t ",
+    "output": "x/x;x=x"
+  },
+  {
+    "input": "x/x;\n\r\t x=x\n\r\t ;x=y",
+    "output": "x/x;x=x"
+  },
+  "Latin1",
+  {
+    "input": "text/html;test=\u00FF;charset=gbk",
+    "output": "text/html;test=\"\u00FF\";charset=gbk",
+    "navigable": true,
+    "encoding": "GBK"
+  },
+  ">Latin1",
+  {
+    "input": "x/x;test=\uFFFD;x=x",
+    "output": "x/x;x=x"
+  },
+  "Failure",
+  {
+    "input": "\u000Bx/x",
+    "output": null
+  },
+  {
+    "input": "\u000Cx/x",
+    "output": null
+  },
+  {
+    "input": "x/x\u000B",
+    "output": null
+  },
+  {
+    "input": "x/x\u000C",
+    "output": null
+  },
+  {
+    "input": "",
+    "output": null
+  },
+  {
+    "input": "\t",
+    "output": null
+  },
+  {
+    "input": "/",
+    "output": null
+  },
+  {
+    "input": "bogus",
+    "output": null
+  },
+  {
+    "input": "bogus/",
+    "output": null
+  },
+  {
+    "input": "bogus/ ",
+    "output": null
+  },
+  {
+    "input": "bogus/bogus/;",
+    "output": null
+  },
+  {
+    "input": "</>",
+    "output": null
+  },
+  {
+    "input": "(/)",
+    "output": null
+  },
+  {
+    "input": "ÿ/ÿ",
+    "output": null
+  },
+  {
+    "input": "text/html(;doesnot=matter",
+    "output": null
+  },
+  {
+    "input": "{/}",
+    "output": null
+  },
+  {
+    "input": "\u0100/\u0100",
+    "output": null
+  },
+  {
+    "input": "text /html",
+    "output": null
+  },
+  {
+    "input": "text/ html",
+    "output": null
+  },
+  {
+    "input": "\"text/html\"",
+    "output": null
+  }
+]