test_trash_directory.js

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/* Any copyright is dedicated to the Public Domain.

 * http://creativecommons.org/publicdomain/zero/1.0/

*/

const { BasePromiseWorker } = ChromeUtils.importESModule(

  "resource://gre/modules/PromiseWorker.sys.mjs"

);

// Test that an open file inside the trash directory does not cause

// unrelated installs to break (see bug 1180901 for more background).

add_task(async function test() {

  createAppInfo("xpcshell@tests.mozilla.org", "XPCShell", "1", "1.9.2");

  await promiseStartupManager();

  let profileDir = PathUtils.profileDir;

  let trashDir = PathUtils.join(profileDir, "extensions", "trash");

  let testFile = PathUtils.join(trashDir, "test.txt");

  await IOUtils.makeDirectory(trashDir);

  let trashDirExists = await IOUtils.exists(trashDir);

  ok(trashDirExists, "trash directory should have been created");

  await IOUtils.writeUTF8(testFile, "");

  // Use a worker to keep the testFile open.

  const worker = new BasePromiseWorker(

    "resource://test/data/test_trash_directory.worker.js"

);

  await worker.post("open", [testFile]);

  let fileExists = await IOUtils.exists(testFile);

  ok(fileExists, "test.txt should have been created in " + trashDir);

  await promiseInstallWebExtension({});

  // The testFile should still exist at this point because we have not

  // yet closed the file handle and as a result, Windows cannot remove it.

  fileExists = await IOUtils.exists(testFile);

  ok(fileExists, "test.txt should still exist");

  // Cleanup

  await promiseShutdownManager();

  await worker.post("close", []);

  await IOUtils.remove(testFile);

  await IOUtils.remove(trashDir, { recursive: true });

});