1 files changed, 89 insertions, 0 deletions
diff --git a/testing/web-platform/tests/fs/FileSystemFileHandle-sync-access-handle-writable-lock.https.tentative.worker.js b/testing/web-platform/tests/fs/FileSystemFileHandle-sync-access-handle-writable-lock.https.tentative.worker.js
new file mode 100644
index 0000000000..c900e2f0ac
--- /dev/null
+++ b/testing/web-platform/tests/fs/FileSystemFileHandle-sync-access-handle-writable-lock.https.tentative.worker.js
@@ -0,0 +1,89 @@
+importScripts('/resources/testharness.js');
+importScripts('resources/test-helpers.js');
+importScripts('resources/sandboxed-fs-test-helpers.js');
+
+'use strict';
+
+directory_test(async (t, root_dir) =>  {
+  const fileHandle = await root_dir.getFileHandle('OPFS.test', {create: true});
+
+  const syncHandle1 = await fileHandle.createSyncAccessHandle();
+  await promise_rejects_dom(
+      t, 'NoModificationAllowedError', fileHandle.createSyncAccessHandle());
+
+  syncHandle1.close();
+  const syncHandle2 = await fileHandle.createSyncAccessHandle();
+  syncHandle2.close();
+}, 'There can only be one open access handle at any given time');
+
+directory_test(async (t, root_dir) =>  {
+  const fooFileHandle = await root_dir.getFileHandle('foo.test', {create: true});
+  const barFileHandle = await root_dir.getFileHandle('bar.test', {create: true});
+
+  const fooSyncHandle = await fooFileHandle.createSyncAccessHandle();
+  t.add_cleanup(() => fooSyncHandle.close());
+
+  const barSyncHandle1 = await barFileHandle.createSyncAccessHandle();
+  await promise_rejects_dom(
+      t, 'NoModificationAllowedError', barFileHandle.createSyncAccessHandle());
+
+  barSyncHandle1.close();
+  const barSyncHandle2 = await barFileHandle.createSyncAccessHandle();
+  barSyncHandle2.close();
+}, 'An access handle from one file does not interfere with the creation of an' +
+     ' access handle on another file');
+
+directory_test(async (t, root_dir) =>  {
+  const fooFileHandle = await root_dir.getFileHandle('foo.test', {create: true});
+  const barFileHandle = await root_dir.getFileHandle('bar.test', {create: true});
+
+  const fooWritable = await cleanup_writable(t, await fooFileHandle.createWritable());
+  t.add_cleanup(() => fooWritable.close());
+
+  const barSyncHandle = await barFileHandle.createSyncAccessHandle();
+  t.add_cleanup(() => barSyncHandle.close());
+}, 'A writable stream from one file does not interfere with the creation of an' +
+     ' access handle on another file');
+
+directory_test(async (t, root_dir) =>  {
+  const fooFileHandle = await root_dir.getFileHandle('foo.test', {create: true});
+  const barFileHandle = await root_dir.getFileHandle('bar.test', {create: true});
+
+  const fooSyncHandle = await fooFileHandle.createSyncAccessHandle();
+  t.add_cleanup(() => fooSyncHandle.close());
+
+  const barWritable = await cleanup_writable(t, await barFileHandle.createWritable());
+  t.add_cleanup(() => barWritable.close());
+}, 'An access handle from one file does not interfere with the creation of a' +
+     ' writable stream on another file');
+
+directory_test(async (t, root_dir) =>  {
+  const fileHandle = await root_dir.getFileHandle('OPFS.test', {create: true});
+
+  const syncHandle = await fileHandle.createSyncAccessHandle();
+  await promise_rejects_dom(
+    t, 'NoModificationAllowedError', cleanup_writable(t, await fileHandle.createWritable()));
+
+  syncHandle.close();
+  const writable = await cleanup_writable(t, await fileHandle.createWritable());
+  await writable.close();
+}, 'Writable streams cannot be created if there is an open access handle');
+
+directory_test(async (t, root_dir) =>  {
+  const fileHandle = await root_dir.getFileHandle('OPFS.test', {create: true});
+
+  const writable1 = await cleanup_writable(t, await fileHandle.createWritable());
+  const writable2 = await cleanup_writable(t, await fileHandle.createWritable());
+  await promise_rejects_dom(
+      t, 'NoModificationAllowedError', fileHandle.createSyncAccessHandle());
+
+  await writable1.close();
+  await promise_rejects_dom(
+      t, 'NoModificationAllowedError', fileHandle.createSyncAccessHandle());
+
+  await writable2.close();
+  const syncHandle = await fileHandle.createSyncAccessHandle();
+  syncHandle.close();
+}, 'Access handles cannot be created if there are open Writable streams');
+
+done();