Import maps: rearrange and update WPTs

* Flips the pass condition for worker interaction. A module worker does
  not impact the import map of the outer page, since its constructor
  takes a URL, not a specifier that needs resolution.

* Removes leftover built-in module support and @std references.

* Removes .tentative filename suffixes.

* Renames "common" to "data-driven".

* Renames parsing.tentative.https.html to parsing-internal.https.html so
  that all internal tests to have -internal in the name. We should move
  them out of WPT (or convert them to not require internals),
  eventually, but for now making the difference clear is good.

* Moves "core" tests up to the top level.

* Removes references to future fetch-based import maps and Chromium
  implementation limitations.

* Adds OWNERS and META.yml

Bug: 1026809
Change-Id: I1807468a813ebee416cd8e05a272dbae6ea157bb
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2491616
Reviewed-by: Hiroshige Hayashizaki <hiroshige@chromium.org>
Commit-Queue: Domenic Denicola <domenic@chromium.org>
Cr-Commit-Position: refs/heads/master@{#825559}

import-maps/META.yml

@@ -0,0 +1,4 @@
+spec: https://github.com/WICG/import-maps
+suggested_reviewers:
+  - domenic
+  - hiroshige-g

import-maps/acquiring/README.md

@@ -0,0 +1 @@
+These tests are about the impact of the [acquiring import maps](https://wicg.github.io/import-maps/#document-acquiring-import-maps) boolean, which prevents import maps from taking effect after a module import has started.

import-maps/acquire-import-maps-flag/dynamic-import/success.tentative.html → import-maps/acquiring/dynamic-import.html

@@ -3,7 +3,6 @@
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
 <script>
-// https://github.com/WICG/import-maps/blob/master/spec.md#when-import-maps-can-be-encountered
 const t = async_test(
   'After dynamic imports, import maps should fire error events');
 const log = [];
@@ -12,19 +11,19 @@
 // first attempt to resolve a module specifier, trickle(d1) is used to ensure
 // the following import map is added after module loading is triggered but
 // before the first module script is parsed.
-promise_test(() => import('../../resources/empty.js?pipe=trickle(d1)'),
+promise_test(() => import('../resources/empty.js?pipe=trickle(d1)'),
              "A dynamic import succeeds");
 </script>
 <script type="importmap" onload="t.assert_unreached('onload')" onerror="t.done()">
 {
   "imports": {
-    "../../resources/log.js?pipe=sub&name=A": "../../resources/log.js?pipe=sub&name=B"
+    "../resources/log.js?pipe=sub&name=A": "../resources/log.js?pipe=sub&name=B"
   }
 }
 </script>
 <script>
 promise_test(() => {
-  return import("../../resources/log.js?pipe=sub&name=A")
+  return import("../resources/log.js?pipe=sub&name=A")
     .then(() => assert_array_equals(log, ["log:A"]))
   },
   'After a dynamic import(), import maps are not effective');

import-maps/acquire-import-maps-flag/script-tag/success.tentative.html → import-maps/acquiring/script-tag.html

@@ -3,22 +3,21 @@
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
 <script>
-// https://github.com/WICG/import-maps/blob/master/spec.md#when-import-maps-can-be-encountered
 const t = async_test(
   'After <script type="module"> import maps should fire error events');
 const log = [];
 </script>
-<script type="module" src="../../resources/empty.js?pipe=trickle(d1)"></script>
+<script type="module" src="../resources/empty.js?pipe=trickle(d1)"></script>
 <script type="importmap" onerror="t.done()">
 {
   "imports": {
-    "../../resources/log.js?pipe=sub&name=A": "../../resources/log.js?pipe=sub&name=B"
+    "../resources/log.js?pipe=sub&name=A": "../resources/log.js?pipe=sub&name=B"
   }
 }
 </script>
 <script>
 promise_test(() => {
-  return import("../../resources/log.js?pipe=sub&name=A")
+  return import("../resources/log.js?pipe=sub&name=A")
     .then(() => assert_array_equals(log, ["log:A"]))
   },
   'After <script type="module"> import maps are not effective');

import-maps/core/module-map-key.tentative.html → import-maps/acquiring/worker-request.html

@@ -2,6 +2,10 @@
 <html>
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
+<script>
+const log = [];
+new Worker('../resources/empty.js?pipe=trickle(d1)', {type: "module"});
+</script>
 <script type="importmap">
 {
   "imports": {
@@ -10,16 +14,9 @@
 }
 </script>
 <script>
-const log = [];
-
-// This test reflects the Chromium's current implementation.
-// If the import map resolution is moved into the fetch spec, the module map's
-// key will become the URL/specifier BEFORE import map resolution.
-// https://crbug.com/928435
 promise_test(() => {
   return import("../resources/log.js?pipe=sub&name=A")
-    .then(() => import("../resources/log.js?pipe=sub&name=B"))
     .then(() => assert_array_equals(log, ["log:B"]))
   },
-  "Module map's key is the URL after import map resolution");
+  'After module worker creation import maps are still effective');
 </script>

import-maps/core/bare.sub.tentative.html → import-maps/bare-specifiers.sub.html

@@ -2,15 +2,15 @@
 <meta name="timeout" content="long">
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
-<script src="../resources/test-helper.js"></script>
+<script src="resources/test-helper.js"></script>
 
 <script>
 // "bare/..." (i.e. without leading "./") are bare specifiers
 // (not relative paths).
 const importMap = `
 {
   "imports": {
-    "bare/bare": "../resources/log.js?pipe=sub&name=bare",
+    "bare/bare": "./resources/log.js?pipe=sub&name=bare",
     "bare/cross-origin-bare": "https://{{domains[www1]}}:{{ports[https][0]}}/import-maps/resources/log.js?pipe=sub&name=cross-origin-bare",
     "bare/to-data": "data:text/javascript,log.push('dataURL')",
 
@@ -26,11 +26,6 @@
   // - static import, and
   // - dynamic import.
 
-  // Currently, Chromium's implementation resolves import maps as a part of
-  // specifier resolution, and thus failure in import map resolution causes
-  // a parse error, not fetch error. Therefore, we use Result.PARSE_ERROR
-  // below. https://crbug.com/928435
-
   // Bare to HTTP(S).
   "bare/bare":
     [Result.URL, Result.URL, "log:bare", "log:bare"],

import-maps/bare/README.md

@@ -0,0 +1 @@
+This directory contains resources which might get imported, post-mapping. The exact URLs are important, which is why we don't place it under resources/ or similar.

import-maps/common/README.md → import-maps/data-driven/README.md

@@ -1,4 +1,4 @@
-# Import maps test JSON format
+# Data-driven import maps tests
 
 In this directory, test inputs and expectations are expressed as JSON files.
 This is in order to share the same JSON files between WPT tests and Jest-based

import-maps/common/parsing.tentative.https.html → import-maps/data-driven/parsing-internal.https.html

@@ -9,7 +9,7 @@
 </script>
 <body>
 <script type="module">
-import { runTestsFromJSON, setupGlobalCleanup } from "./resources/common-test-helper.js";
+import { runTestsFromJSON, setupGlobalCleanup } from "./resources/test-helper.js";
 
 const promises = [];
 

import-maps/common/resolving-internal.tentative.https.html → import-maps/data-driven/resolving-internal.https.html

@@ -7,12 +7,12 @@
 // This test file is for resolution tests that require Chromium's internal
 // methods.
 // For tests that don't use Chromium's internal methods, see
-// resolving.tentative.https.html.
+// resolving.https.html.
 globalThis.useInternalMethods = true;
 </script>
 <body>
 <script type="module">
-import { runTestsFromJSON, setupGlobalCleanup } from "./resources/common-test-helper.js";
+import { runTestsFromJSON, setupGlobalCleanup } from "./resources/test-helper.js";
 
 const promises = [];
 

import-maps/common/resolving.tentative.https.html → import-maps/data-driven/resolving.https.html

@@ -5,7 +5,7 @@
 <script src="/service-workers/service-worker/resources/test-helpers.sub.js"></script>
 <body>
 <script type="module">
-import { runTestsFromJSON, setupGlobalCleanup } from "./resources/common-test-helper.js";
+import { runTestsFromJSON, setupGlobalCleanup } from "./resources/test-helper.js";
 
 const promises = [];
 

import-maps/common/resources/common-test-helper.js → import-maps/data-driven/resources/test-helper.js

@@ -7,7 +7,7 @@ const scope = './scope/';
 
 // Global setup: this must be the first promise_test.
 promise_test(async (t) => {
-  const script = 'common-test-service-worker.js';
+  const script = 'service-worker.js';
 
   registration =
       await service_worker_unregister_and_register(t, script, scope);
@@ -38,7 +38,7 @@ function parse(importMap, importMapBaseURL) {
 
     const testHTML = `
       <body>
-      <script src="${location.origin}/import-maps/common/resources/common-test-helper-iframe.js"></script>
+      <script src="${location.origin}/import-maps/data-driven/resources/test-helper-iframe.js"></script>
       <script type="importmap" onerror="onScriptError(event)">
       ${importMapString}
       </script>

import-maps/common/common-test-service-worker.js → import-maps/data-driven/service-worker.js

@@ -6,7 +6,7 @@ self.addEventListener('message', event => {
 });
 
 self.addEventListener('fetch', event => {
-    if (event.request.url.indexOf('common-test-helper-iframe.js') >= 0) {
+    if (event.request.url.indexOf('test-helper-iframe.js') >= 0) {
       return;
     }
     if (serveImporterScript) {

import-maps/core/data.sub.tentative.html → import-maps/data-url-specifiers.sub.html

@@ -2,17 +2,17 @@
 <meta name="timeout" content="long">
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
-<script src="../resources/test-helper.js"></script>
+<script src="resources/test-helper.js"></script>
 
 <script>
 // "bare/..." (i.e. without leading "./") are bare specifiers
 // (not relative paths).
 const importMap = `
 {
   "imports": {
-    "bare": "../resources/log.js?pipe=sub&name=bare",
+    "bare": "./resources/log.js?pipe=sub&name=bare",
 
-    "data:text/javascript,log.push('data:foo')": "../resources/log.js?pipe=sub&name=foo",
+    "data:text/javascript,log.push('data:foo')": "./resources/log.js?pipe=sub&name=foo",
     "data:text/javascript,log.push('data:cross-origin-foo')": "https://{{domains[www1]}}:{{ports[https][0]}}/import-maps/resources/log.js?pipe=sub&name=cross-origin-foo",
     "data:text/javascript,log.push('data:to-data')": "data:text/javascript,log.push('dataURL')",
 
@@ -28,11 +28,6 @@
   // - static import, and
   // - dynamic import.
 
-  // Currently, Chromium's implementation resolves import maps as a part of
-  // specifier resolution, and thus failure in import map resolution causes
-  // a parse error, not fetch error. Therefore, we use Result.PARSE_ERROR
-  // below. https://crbug.com/928435
-
   // data: to HTTP(S).
   "data:text/javascript,log.push('data:foo')":
     [Result.URL, Result.URL, "log:foo", "log:foo"],

import-maps/core/http.sub.tentative.html → import-maps/http-url-like-specifiers.sub.html

@@ -1,21 +1,21 @@
 <!DOCTYPE html>
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
-<script src="../resources/test-helper.js"></script>
+<script src="resources/test-helper.js"></script>
 
 <script>
 // "bare/..." (i.e. without leading "./") are bare specifiers
 // (not relative paths).
 const importMap = `
 {
   "imports": {
-    "bare": "../resources/log.js?pipe=sub&name=bare",
+    "bare": "./resources/log.js?pipe=sub&name=bare",
 
-    "../resources/log.js?pipe=sub&name=foo": "../resources/log.js?pipe=sub&name=bar",
-    "../resources/log.js?pipe=sub&name=cross-origin-foo": "https://{{domains[www1]}}:{{ports[https][0]}}/import-maps/resources/log.js?pipe=sub&name=cross-origin-bar",
-    "../resources/log.js?pipe=sub&name=to-data": "data:text/javascript,log.push('dataURL')",
+    "./resources/log.js?pipe=sub&name=foo": "./resources/log.js?pipe=sub&name=bar",
+    "./resources/log.js?pipe=sub&name=cross-origin-foo": "https://{{domains[www1]}}:{{ports[https][0]}}/import-maps/resources/log.js?pipe=sub&name=cross-origin-bar",
+    "./resources/log.js?pipe=sub&name=to-data": "data:text/javascript,log.push('dataURL')",
 
-    "../resources/log.js?pipe=sub&name=to-bare": "bare"
+    "./resources/log.js?pipe=sub&name=to-bare": "bare"
   }
 }
 `;
@@ -27,11 +27,6 @@
   // - static import, and
   // - dynamic import.
 
-  // Currently, Chromium's implementation resolves import maps as a part of
-  // specifier resolution, and thus failure in import map resolution causes
-  // a parse error, not fetch error. Therefore, we use Result.PARSE_ERROR
-  // below. https://crbug.com/928435
-
   // HTTP(S) to HTTP(S).
   "{{location[server]}}/import-maps/resources/log.js?pipe=sub&name=foo":
     [Result.URL, Result.URL, "log:bar", "log:bar"],

import-maps/module-map-key.html

@@ -0,0 +1,21 @@
+<!DOCTYPE html>
+<html>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script type="importmap">
+{
+  "imports": {
+    "./resources/log.js?pipe=sub&name=A": "./resources/log.js?pipe=sub&name=B"
+  }
+}
+</script>
+<script>
+const log = [];
+
+promise_test(() => {
+  return import("./resources/log.js?pipe=sub&name=A")
+    .then(() => import("./resources/log.js?pipe=sub&name=B"))
+    .then(() => assert_array_equals(log, ["log:B"]))
+  },
+  "Module map's key is the URL after import map resolution");
+</script>

import-maps/resources/test-helper.js

@@ -10,9 +10,6 @@ function expect_log(test, expected_log) {
 
 // Results of resolving a specifier using import maps.
 const Result = {
-  // A built-in module (std:blank) is loaded.
-  BUILTIN: "builtin",
-
   // A failure considered as a fetch error in a module script tree.
   // <script>'s error event is fired.
   FETCH_ERROR: "fetch_error",
@@ -26,9 +23,9 @@ const Result = {
   // ------------------------- ----------------------
   // ...?name=foo              log:foo
   // data:...log('foo')        foo
-  // Others, e.g. @std/blank   relative:@std/blank
+  // Others, e.g. bare/bare    relative:bare/bare
   // ------------------------- ----------------------
-  // (The last case assumes a file `@std/blank` that logs `relative:@std/blank`
+  // (The last case assumes a file `bare/bare` that logs `relative:bare/bare`
   // exists)
   URL: "URL",
 };
@@ -79,9 +76,7 @@ function getHandlers(t, specifier, expected) {
     });
   } else {
     let expected_log;
-    if (expected === Result.BUILTIN) {
-      expected_log = [];
-    } else if (expected === Result.URL) {
+    if (expected === Result.URL) {
       const match_data_url = specifier.match(/data:.*log\.push\('(.*)'\)/);
       const match_log_js = specifier.match(/name=(.*)/);
       if (match_data_url) {

import-maps/core/static-import.py → import-maps/static-import.py

@@ -1,3 +1,7 @@
+# This file needs to be a sibling of the test files (and not under resources/)
+# so that base URL resolution is the same between those test files and <script>s
+# pointing to this file.
+
 from wptserve.utils import isomorphic_decode
 
 def main(request, response):

lint.ignore

@@ -692,7 +692,7 @@ MISSING-LINK: css/geometry/*.any.js
 MISSING-LINK: css/filter-effects/*.any.js
 
 # Tests that use WebKit/Blink testing APIs
-LAYOUTTESTS APIS: import-maps/common/resources/common-test-helper-iframe.js
+LAYOUTTESTS APIS: import-maps/data-driven/resources/test-helper-iframe.js
 LAYOUTTESTS APIS: resources/chromium/enable-hyperlink-auditing.js
 LAYOUTTESTS APIS: resources/chromium/generic_sensor_mocks.js
 LAYOUTTESTS APIS: resources/chromium/webxr-test.js