1 files changed, 76 insertions, 0 deletions
diff --git a/devtools/shared/tests/browser/browser_async_storage.js b/devtools/shared/tests/browser/browser_async_storage.js
new file mode 100644
index 0000000000..87a1ef169f
--- /dev/null
+++ b/devtools/shared/tests/browser/browser_async_storage.js
@@ -0,0 +1,76 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+// Test the basic functionality of async-storage.
+// Adapted from https://github.com/mozilla-b2g/gaia/blob/f09993563fb5fec4393eb71816ce76cb00463190/apps/sharedtest/test/unit/async_storage_test.js.
+
+const asyncStorage = require("resource://devtools/shared/async-storage.js");
+add_task(async function () {
+  is(typeof asyncStorage.length, "function", "API exists.");
+  is(typeof asyncStorage.key, "function", "API exists.");
+  is(typeof asyncStorage.getItem, "function", "API exists.");
+  is(typeof asyncStorage.setItem, "function", "API exists.");
+  is(typeof asyncStorage.removeItem, "function", "API exists.");
+  is(typeof asyncStorage.clear, "function", "API exists.");
+});
+
+add_task(async function () {
+  await asyncStorage.setItem("foo", "bar");
+  let value = await asyncStorage.getItem("foo");
+  is(value, "bar", "value is correct");
+  await asyncStorage.setItem("foo", "overwritten");
+  value = await asyncStorage.getItem("foo");
+  is(value, "overwritten", "value is correct");
+  await asyncStorage.removeItem("foo");
+  value = await asyncStorage.getItem("foo");
+  is(value, null, "value is correct");
+});
+
+add_task(async function () {
+  const object = {
+    x: 1,
+    y: "foo",
+    z: true,
+  };
+
+  await asyncStorage.setItem("myobj", object);
+  let value = await asyncStorage.getItem("myobj");
+  is(object.x, value.x, "value is correct");
+  is(object.y, value.y, "value is correct");
+  is(object.z, value.z, "value is correct");
+  await asyncStorage.removeItem("myobj");
+  value = await asyncStorage.getItem("myobj");
+  is(value, null, "value is correct");
+});
+
+add_task(async function () {
+  await asyncStorage.clear();
+  let len = await asyncStorage.length();
+  is(len, 0, "length is correct");
+  await asyncStorage.setItem("key1", "value1");
+  len = await asyncStorage.length();
+  is(len, 1, "length is correct");
+  await asyncStorage.setItem("key2", "value2");
+  len = await asyncStorage.length();
+  is(len, 2, "length is correct");
+  await asyncStorage.setItem("key3", "value3");
+  len = await asyncStorage.length();
+  is(len, 3, "length is correct");
+
+  let key = await asyncStorage.key(0);
+  is(key, "key1", "key is correct");
+  key = await asyncStorage.key(1);
+  is(key, "key2", "key is correct");
+  key = await asyncStorage.key(2);
+  is(key, "key3", "key is correct");
+  key = await asyncStorage.key(3);
+  is(key, null, "key is correct");
+  await asyncStorage.clear();
+  key = await asyncStorage.key(0);
+  is(key, null, "key is correct");
+
+  len = await asyncStorage.length();
+  is(len, 0, "length is correct");
+});