1 files changed, 63 insertions, 0 deletions
diff --git a/testing/web-platform/tests/IndexedDB/transaction-scheduling-rw-scopes.any.js b/testing/web-platform/tests/IndexedDB/transaction-scheduling-rw-scopes.any.js
new file mode 100644
index 0000000000..7296fef3b0
--- /dev/null
+++ b/testing/web-platform/tests/IndexedDB/transaction-scheduling-rw-scopes.any.js
@@ -0,0 +1,63 @@
+// META: script=resources/support.js
+
+indexeddb_test(
+  (t, db) => {
+    const store = db.createObjectStore('store');
+    db.createObjectStore('a');
+    db.createObjectStore('b');
+    db.createObjectStore('c');
+  },
+
+  (t, db) => {
+    let transaction1Started = false;
+    let transaction1Complete = false;
+    let transaction2Started = false;
+    let transaction2Complete = false;
+    let transaction3Started = false;
+    let transaction3Complete = false;
+
+    const transaction1 = db.transaction(['a'], 'readwrite');
+    let request = transaction1.objectStore('a').get(0);
+    request.onerror = t.unreached_func('request should succeed');
+    request.onsuccess = t.step_func(() => {
+      transaction1Started = true;
+    });
+    transaction1.onabort = t.unreached_func('transaction1 should complete');
+    transaction1.oncomplete = t.step_func(() => {
+      transaction1Complete = true;
+      assert_false(transaction2Started);
+      assert_false(transaction3Started);
+    });
+
+
+    // transaction2 overlaps with transaction1, so must wait until transaction1
+    // completes.
+    const transaction2 = db.transaction(['a', 'b'], 'readwrite');
+    request = transaction2.objectStore('a').get(0);
+    request.onerror = t.unreached_func('request should succeed');
+    request.onsuccess = t.step_func(() => {
+      assert_true(transaction1Complete);
+      transaction2Started = true;
+    });
+    transaction2.onabort = t.unreached_func('transaction2 should complete');
+    transaction2.oncomplete = t.step_func(() => {
+      transaction2Complete = true;
+      assert_false(transaction3Started);
+    });
+
+    // transaction3 overlaps with transaction2, so must wait until transaction2
+    // completes even though it does not overlap with transaction1.
+    const transaction3 = db.transaction(['b', 'c'], 'readwrite');
+    request = transaction3.objectStore('b').get(0);
+    request.onerror = t.unreached_func('request should succeed');
+    request.onsuccess = t.step_func(() => {
+      assert_true(transaction1Complete);
+      assert_true(transaction2Complete);
+      transaction3Started = true;
+    });
+    transaction3.onabort = t.unreached_func('transaction3 should complete');
+    transaction3.oncomplete = t.step_func_done(() => {
+      transaction3Complete = true;
+    });
+  },
+  "Check that scope restrictions on read-write transactions are enforced.");