idb: encapsulate non-JSON data correctly

1 files changed, 39 insertions, 0 deletions

diff --git a/packages/idb-bridge/src/util/structuredClone.test.ts b/packages/idb-bridge/src/util/structuredClone.test.ts
new file mode 100644
index 000000000..58a7f32c1
--- /dev/null
+++ b/packages/idb-bridge/src/util/structuredClone.test.ts
@@ -0,0 +1,39 @@
+/*
+ Copyright 2019 Florian Dold
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
+ or implied. See the License for the specific language governing
+ permissions and limitations under the License.
+*/
+
+import test, { ExecutionContext } from "ava";
+import { structuredClone } from "./structuredClone";
+
+function checkClone(t: ExecutionContext, x: any): void {
+  t.deepEqual(structuredClone(x), x);
+}
+
+test("structured clone", (t) => {
+  checkClone(t, "foo");
+  checkClone(t, [1, 2]);
+  checkClone(t, { x1: "foo" });
+  checkClone(t, new Date());
+  checkClone(t, [new Date()]);
+  checkClone(t, undefined);
+  checkClone(t, [undefined]);
+});
+
+test("structured clone (cycles)", (t) => {
+  const obj1: any[] = [1, 2];
+  obj1.push(obj1);
+  const obj1Clone = structuredClone(obj1);
+  t.is(obj1Clone, obj1Clone[2]);
+});