1 files changed, 29 insertions, 0 deletions
diff --git a/testing/web-platform/tests/fs/FileSystemSyncAccessHandle-flush.https.tentative.worker.js b/testing/web-platform/tests/fs/FileSystemSyncAccessHandle-flush.https.tentative.worker.js
new file mode 100644
index 0000000000..96953a88f2
--- /dev/null
+++ b/testing/web-platform/tests/fs/FileSystemSyncAccessHandle-flush.https.tentative.worker.js
@@ -0,0 +1,29 @@
+importScripts('/resources/testharness.js');
+importScripts('resources/sync-access-handle-test.js');
+
+'use strict';
+
+sync_access_handle_test((t, handle) => {
+  handle.flush();
+}, 'Test flush on an empty file.');
+
+sync_access_handle_test((t, handle) => {
+  if (!('TextEncoder' in self)) {
+    return;
+  }
+  const encoder = new TextEncoder();
+  const decoder = new TextDecoder();
+
+  const text = 'Hello Storage Foundation';
+  const writeBuffer = new TextEncoder().encode(text);
+  handle.write(writeBuffer, {at: 0});
+  handle.flush();
+  let readBuffer = new Uint8Array(text.length);
+  handle.read(readBuffer, {at: 0});
+  assert_equals(
+      text, new TextDecoder().decode(readBuffer),
+      'Check that the written bytes and the read bytes match');
+}, 'SyncAccessHandle.read returns bytes written by SyncAccessHandle.write' +
+    ' after SyncAccessHandle.flush');
+
+done();