Add JSON modules tests for charset, integrity, and MIME type parameters

Add JSON modules tests for the following: - The <script> element's integrity attribute is respected. - JSON modules are always decoded as UTF-8 regardless of Content-Type or the document's encoding. The existing coverage we had on this in utf8.tenative.html was renamed to charset.html, refactored, and expanded. - Adding parameters to the MIME type doesn't prevent it from being evaluated as a JSON MIME type. Note, some of the existing MIME type tests for */*+json still fail because it seems the spec issue on these at whatwg/mimesniff#112 hasn't been fully resolved. I'll follow up with that separately. Bug: 1132413 Change-Id: I682de01bbb14b53214fcc16f427a4875f8cfed7f
web-platform-tests · Apr 20, 2021 · 4782e84 · 4782e84
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diff --git a/html/semantics/scripting-1/the-script-element/json-module/charset-2.html b/html/semantics/scripting-1/the-script-element/json-module/charset-2.html
@@ -0,0 +1,19 @@
+<!DOCTYPE html>
+<meta charset="windows-1250">
+<title>JSON modules: UTF-8 decoding</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<div id=log></div>
+<script type="module">
+  import json from "../serve-with-content-type.py?fn=json-module/utf-8.json" assert { type: "json"};
+  test(() => {
+    assert_equals(json.data, "śćążź");
+  }, "JSON module should be loaded as utf-8 even though document's encoding is windows-1250");
+</script>
+<script type="module">
+  import json from "../serve-with-content-type.py?fn=json-module/windows-1250.json&ct=text/json%3Bcharset=windows-1250" assert { type: "json"};
+  test(() => {
+    assert_not_equals(json.data, "śćążź",
+                    'Should be decoded as UTF-8');
+  }, "JSON module should be loaded as utf-8 even if it is encoded in windows-1250 and served with a windows-1250 charset response header, and this document's encoding is windows-1250");
+</script>
diff --git a/html/semantics/scripting-1/the-script-element/json-module/charset.html b/html/semantics/scripting-1/the-script-element/json-module/charset.html
@@ -0,0 +1,37 @@
+<!DOCTYPE html>
+<meta charset=utf-8>
+<title>JSON modules: UTF-8 decoding</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<div id=log></div>
+<script type="module" onerror="unreachable()">
+  import json from "../serve-with-content-type.py?fn=json-module/utf-8.json&ct=text/json%3Bcharset=utf-8" assert { type: "json"};
+  test(() => {
+    assert_equals(json.data, "śćążź");
+  }, "JSON module should be loaded as utf-8 when charset=utf8 is specified");
+</script>
+<script type="module" onerror="unreachable()">
+  import json from "../serve-with-content-type.py?fn=json-module/utf-8.json&ct=text/json%3Bcharset=shift-jis" assert { type: "json"};
+  test(() => {
+    assert_equals(json.data, "śćążź");
+  }, "JSON module should be loaded as utf-8 when charset=shift-jis is specified");
+</script>
+<script type="module" onerror="unreachable()">
+  import json from "../serve-with-content-type.py?fn=json-module/utf-8.json&ct=text/json%3Bcharset=windows-1252" assert { type: "json"};
+  test(() => {
+    assert_equals(json.data, "śćążź");
+  }, "JSON module should be loaded as utf-8 when charset=windows-1252 is specified");
+</script>
+<script type="module" onerror="unreachable()">
+  import json from "../serve-with-content-type.py?fn=json-module/utf-8.json&ct=text/json%3Bcharset=utf-7" assert { type: "json"};;
+  test(() => {
+    assert_equals(json.data, "śćążź");
+  }, "JSON module should be loaded as utf-8 when charset=utf-7 is specified");
+</script>
+<script type="module" onerror="unreachable()">
+  import json from "../serve-with-content-type.py?fn=json-module/windows-1250.json&ct=text/json%3Bcharset=windows-1250" assert { type: "json"};
+  test(() => {
+    assert_not_equals(json.data, "śćążź",
+                    'Should be decoded as UTF-8');
+  }, "JSON module should be loaded as utf-8 even if it is encoded in windows-1250 and served with a windows-1250 charset response header");
+</script>
diff --git a/html/semantics/scripting-1/the-script-element/json-module/integrity-matches.js b/html/semantics/scripting-1/the-script-element/json-module/integrity-matches.js
@@ -0,0 +1,2 @@
+import json from "./data.json" assert { type: "json" };
+window.matchesLog.push(`integrity-matches,json:${json.answer}`);
diff --git a/html/semantics/scripting-1/the-script-element/json-module/integrity-mismatches.js b/html/semantics/scripting-1/the-script-element/json-module/integrity-mismatches.js
@@ -0,0 +1,2 @@
+import json "./data.json" assert { type: "json" };
+window.mismatchesLog.push(`integrity-mismatches,json:${json.answer}`);
diff --git a/html/semantics/scripting-1/the-script-element/json-module/integrity.html b/html/semantics/scripting-1/the-script-element/json-module/integrity.html
@@ -0,0 +1,28 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>&lt;script> integrity=""</title>
+<link rel="help" href="https://html.spec.whatwg.org/multipage/#prepare-a-script">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+
+<script>
+window.matchesLog = [];
+window.matchesEvents = [];
+
+window.mismatchesLog = [];
+window.mismatchesEvents = [];
+</script>
+<script type="module" src="integrity-matches.js" integrity="sha384-VmQQfGzBiLKdyzw4FA4kL4ohu4tyujV68ddgW1aN/1v3cBZNNBn2gDFdVQxfL7+a"  onload="window.matchesEvents.push('load');" onerror="window.matchesEvents.push('error')"></script>
+<script type="module" src="integrity-mismatches.js" integrity="sha384-doesnotmatch" onload="window.mismatchesEvents.push('load');" onerror="window.mismatchesEvents.push('error')"></script>
+
+<script type="module">
+test(() => {
+  assert_array_equals(window.matchesLog, ["integrity-matches,json:42"], "The module and its dependency must have executed");
+  assert_array_equals(window.matchesEvents, ["load"], "The load event must have fired");
+}, "The integrity attribute must be verified on the top-level of a module loading a JSON module and allow it to execute when it matches");
+
+test(() => {
+  assert_array_equals(window.mismatchesLog, [], "The module and its dependency must not have executed");
+  assert_array_equals(window.mismatchesEvents, ["error"], "The error event must have fired");
+}, "The integrity attribute must be verified on the top-level of a module loading a JSON module and not allow it to execute when there's a mismatch");
+</script>
diff --git a/html/semantics/scripting-1/the-script-element/json-module/utf-8.json b/html/semantics/scripting-1/the-script-element/json-module/utf-8.json
@@ -0,0 +1,4 @@
+{
+  "data": "śćążź",
+  "comment": "The data above are five Polish letters, similar to scazz. It can be read correctly only with utf-8 encoding."
+}
diff --git a/html/semantics/scripting-1/the-script-element/json-module/utf8.json b/html/semantics/scripting-1/the-script-element/json-module/utf8.json
diff --git a/html/semantics/scripting-1/the-script-element/json-module/utf8.tentative.html b/html/semantics/scripting-1/the-script-element/json-module/utf8.tentative.html
diff --git a/html/semantics/scripting-1/the-script-element/json-module/valid-content-type.tentative.html b/html/semantics/scripting-1/the-script-element/json-module/valid-content-type.tentative.html
@@ -17,6 +17,8 @@
 const t2 = async_test("application/json");
 const t3 = async_test("text/html+json");
 const t4 = async_test("image/svg+json");
+const t5 = async_test("text/json;boundary=something");
+const t6 = async_test("text/json;foo=bar");
 </script>
 <script type="module" onerror="t1.step(() => assert_unreached(event))">
 import v from "../serve-with-content-type.py?fn=json-module/module.json&ct=text/json" assert { type: "json"};
@@ -34,3 +36,11 @@
 import v from "../serve-with-content-type.py?fn=json-module/module.json&ct=image/svg+json" assert { type: "json"};
 check(t4, v);
 </script>
+<script type="module" onerror="t5.step(() => assert_unreached(event))">
+import v from "../serve-with-content-type.py?fn=json-module/module.json&ct=text/json;boundary=something" assert { type: "json"};
+check(t5, v);
+</script>
+<script type="module" onerror="t6.step(() => assert_unreached(event))">
+import v from "../serve-with-content-type.py?fn=json-module/module.json&ct=text/json;foo=bar" assert { type: "json"};
+check(t6, v);
+</script>
diff --git a/html/semantics/scripting-1/the-script-element/json-module/windows-1250.json b/html/semantics/scripting-1/the-script-element/json-module/windows-1250.json
@@ -0,0 +1,4 @@
+{
+  "data": "�湿�",
+  "comment": "The data above are five Polish letters, similar to scazz. It can be read correctly only with windows1250 encoding."
+}