1 files changed, 42 insertions, 0 deletions
diff --git a/testing/web-platform/tests/html/semantics/scripting-1/the-script-element/module/dynamic-import/v8-code-cache.html b/testing/web-platform/tests/html/semantics/scripting-1/the-script-element/module/dynamic-import/v8-code-cache.html
new file mode 100644
index 0000000000..77de19e74b
--- /dev/null
+++ b/testing/web-platform/tests/html/semantics/scripting-1/the-script-element/module/dynamic-import/v8-code-cache.html
@@ -0,0 +1,42 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+
+<body>
+<script>
+// Regression test for https://crbug.com/1244145:
+// This test loads a same script file (`resources/v8-code-cache.js`)
+// multiple times to trigger V8 Code Cache.
+// Host defined options (including base URLs and nonces) are lost when the
+// script is compiled using the cached metadata, and thus causing
+// dynamic import failures due to wrong base URLs and wrong nonces.
+
+function runTest(type, nonce, description) {
+  promise_test(t => {
+    return new Promise((resolve, reject) => {
+      const iframe = document.createElement('iframe');
+      iframe.src = 'resources/v8-code-cache-iframe.sub.html?nonce=' + nonce + '&type=' + type;
+      iframe.onload = () => {
+        // `window.promise` is set by `resources/v8-code-cache.js`.
+        window.promise.then(resolve, reject);
+      };
+      document.body.appendChild(iframe);
+      t.add_cleanup(() => iframe.remove());
+    });
+  }, type + ': ' + description);
+}
+
+// As `promise_test` are serialized, each iframe is created after previous
+// iframes and scripts are completely loaded.
+for (const type of ['text/javascript', 'module']) {
+  // Cache the script in V8 Code Cache by running multiple times.
+  runTest(type, 'abc', 'Run #1');
+  runTest(type, 'abc', 'Run #2');
+  runTest(type, 'abc', 'Run #3');
+  runTest(type, 'abc', 'Run #4');
+  // Changing the nonce seems to disable compilation cache, trigger compilation
+  // using V8 Code Cache and thus expose the bug.
+  runTest(type, 'def', 'Run #5');
+}
+</script>