1 files changed, 66 insertions, 0 deletions
diff --git a/testing/web-platform/tests/html/semantics/scripting-1/the-script-element/module/dynamic-import/blob-url.any.js b/testing/web-platform/tests/html/semantics/scripting-1/the-script-element/module/dynamic-import/blob-url.any.js
new file mode 100644
index 0000000000..0719a18bf1
--- /dev/null
+++ b/testing/web-platform/tests/html/semantics/scripting-1/the-script-element/module/dynamic-import/blob-url.any.js
@@ -0,0 +1,66 @@
+// META: global=window,dedicatedworker,sharedworker,dedicatedworker-module,sharedworker-module
+
+function objectUrlFromModule(module) {
+  const blob = new Blob([module], { type: "text/javascript" });
+  return URL.createObjectURL(blob);
+}
+
+const moduleText = `export const foo = "bar";`;
+
+promise_test(async (t) => {
+  const moduleBlobUrl = objectUrlFromModule(moduleText);
+  t.add_cleanup(() => URL.revokeObjectURL(moduleBlobUrl));
+
+  const module = await import(moduleBlobUrl);
+  assert_equals(module.foo, "bar");
+}, "Blob URLs are supported in dynamic imports");
+
+promise_test(async (t) => {
+  const moduleBlobUrl = objectUrlFromModule(moduleText);
+  t.add_cleanup(() => URL.revokeObjectURL(moduleBlobUrl));
+
+  const module1 = await import(moduleBlobUrl);
+  const module2 = await import(moduleBlobUrl);
+  assert_equals(module1, module2);
+}, "Identical blob URLs resolve to the same module");
+
+promise_test(async (t) => {
+  const moduleBlob = new Blob([moduleText], { type: "text/javascript" });
+  const moduleBlobUrl1 = URL.createObjectURL(moduleBlob);
+  const moduleBlobUrl2 = URL.createObjectURL(moduleBlob);
+  t.add_cleanup(() => {
+    URL.revokeObjectURL(moduleBlobUrl1);
+    URL.revokeObjectURL(moduleBlobUrl2);
+  });
+
+  const module1 = await import(moduleBlobUrl1);
+  const module2 = await import(moduleBlobUrl2);
+  assert_not_equals(module1, module2);
+}, "Different blob URLs pointing to the same blob resolve to different modules");
+
+promise_test(async (t) => {
+  const moduleBlobUrl = objectUrlFromModule(moduleText);
+  URL.revokeObjectURL(moduleBlobUrl);
+
+  await promise_rejects_js(t, TypeError, import(moduleBlobUrl));
+}, "A revoked blob URL will not resolve");
+
+promise_test(async () => {
+  const moduleBlobUrl = objectUrlFromModule(moduleText);
+  const module1 = await import(moduleBlobUrl);
+
+  URL.revokeObjectURL(moduleBlobUrl);
+
+  const module2 = await import(moduleBlobUrl);
+  assert_equals(module1, module2);
+}, "A revoked blob URL will resolve if it's already in the module graph");
+
+promise_test(async () => {
+  const moduleBlobUrl = objectUrlFromModule(moduleText);
+
+  const importPromise = import(moduleBlobUrl);
+  URL.revokeObjectURL(moduleBlobUrl);
+
+  const module = await importPromise;
+  assert_equals(module.foo, "bar");
+}, "Revoking a blob URL immediately after calling import will not fail");