browser_async_storage.js

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/* 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");

});