1 files changed, 72 insertions, 0 deletions
diff --git a/testing/web-platform/tests/IndexedDB/transaction-scheduling-across-databases.any.js b/testing/web-platform/tests/IndexedDB/transaction-scheduling-across-databases.any.js
new file mode 100644
index 0000000000..09d8ef20d1
--- /dev/null
+++ b/testing/web-platform/tests/IndexedDB/transaction-scheduling-across-databases.any.js
@@ -0,0 +1,72 @@
+// META: script=resources/support.js
+
+indexeddb_test(
+  (t, db) => {
+    const store = db.createObjectStore('store');
+  },
+
+  (t, db1) => {
+    // Open a second database.
+    const db2name = db1.name + '-2';
+    const delete_request = indexedDB.deleteDatabase(db2name);
+    delete_request.onerror = t.unreached_func('deleteDatabase() should succeed');
+    const open_request = indexedDB.open(db2name, 1);
+    open_request.onerror = t.unreached_func('open() should succeed');
+    open_request.onupgradeneeded = t.step_func(() => {
+      const db2 = open_request.result;
+      const store = db2.createObjectStore('store');
+    });
+    open_request.onsuccess = t.step_func(() => {
+      const db2 = open_request.result;
+      t.add_cleanup(() => {
+        db2.close();
+        indexedDB.deleteDatabase(db2.name);
+      });
+
+      let transaction1PutSuccess = false;
+      let transaction2PutSuccess = false;
+
+      const onTransactionComplete = barrier_func(2, t.step_func_done(() => {
+        assert_true(transaction1PutSuccess,
+                    'transaction1 should have executed at least one request');
+        assert_true(transaction2PutSuccess,
+                    'transaction1 should have executed at least one request');
+      }));
+
+
+      const transaction1 = db1.transaction('store', 'readwrite', {durability: 'relaxed'});
+      transaction1.onabort = t.unreached_func('transaction1 should complete');
+      transaction1.oncomplete = t.step_func(onTransactionComplete);
+
+      const transaction2 = db2.transaction('store', 'readwrite', {durability: 'relaxed'});
+      transaction2.onabort = t.unreached_func('transaction2 should complete');
+      transaction2.oncomplete = t.step_func(onTransactionComplete);
+
+      // Keep both transactions alive until each has reported at least one
+      // successful operation.
+
+      function doTransaction1Put() {
+        const request = transaction1.objectStore('store').put(0, 0);
+        request.onerror = t.unreached_func('put request should succeed');
+        request.onsuccess = t.step_func(() => {
+          transaction1PutSuccess = true;
+          if (!transaction2PutSuccess)
+            doTransaction1Put();
+        });
+      }
+
+      function doTransaction2Put() {
+        const request = transaction2.objectStore('store').put(0, 0);
+        request.onerror = t.unreached_func('put request should succeed');
+        request.onsuccess = t.step_func(() => {
+          transaction2PutSuccess = true;
+          if (!transaction1PutSuccess)
+            doTransaction2Put();
+        });
+      }
+
+      doTransaction1Put();
+      doTransaction2Put();
+    });
+  },
+  "Check that transactions in different databases can run in parallel.");