browser_Storage.js

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"use strict";

add_task(async function () {

  const store1 = new Storage("prefix1");

  const store2 = new Storage("prefix2");

  // Make sure values return null before being set

  Assert.equal(await store1.getItem("key"), null);

  Assert.equal(await store2.getItem("key"), null);

  // Set values to check

  await store1.setItem("key", "value1");

  await store2.setItem("key", "value2");

  // Check that they are available

  Assert.equal(await store1.getItem("key"), "value1");

  Assert.equal(await store2.getItem("key"), "value2");

  // Remove them, and check they are gone

  await store1.removeItem("key");

  await store2.removeItem("key");

  Assert.equal(await store1.getItem("key"), null);

  Assert.equal(await store2.getItem("key"), null);

  // Check that numbers are stored as numbers (not strings)

  await store1.setItem("number", 42);

  Assert.equal(await store1.getItem("number"), 42);

  // Check complex types work

  const complex = { a: 1, b: [2, 3], c: { d: 4 } };

  await store1.setItem("complex", complex);

  Assert.deepEqual(await store1.getItem("complex"), complex);

  // Check that clearing the storage removes data from multiple

  // prefixes.

  await store1.setItem("removeTest", 1);

  await store2.setItem("removeTest", 2);

  Assert.equal(await store1.getItem("removeTest"), 1);

  Assert.equal(await store2.getItem("removeTest"), 2);

  await Storage.clearAllStorage();

  Assert.equal(await store1.getItem("removeTest"), null);

  Assert.equal(await store2.getItem("removeTest"), null);

});