1 files changed, 102 insertions, 0 deletions
diff --git a/dom/system/tests/ioutils/file_ioutils_worker.js b/dom/system/tests/ioutils/file_ioutils_worker.js
new file mode 100644
index 0000000000..9f9dfc899b
--- /dev/null
+++ b/dom/system/tests/ioutils/file_ioutils_worker.js
@@ -0,0 +1,102 @@
+// Any copyright is dedicated to the Public Domain.
+// - http://creativecommons.org/publicdomain/zero/1.0/
+
+/* eslint-env mozilla/chrome-worker, node */
+
+"use strict";
+
+/* import-globals-from /testing/mochitest/tests/SimpleTest/WorkerSimpleTest.js */
+importScripts("chrome://mochikit/content/tests/SimpleTest/WorkerSimpleTest.js");
+/* import-globals-from /toolkit/modules/ObjectUtils.jsm */
+importScripts("resource://gre/modules/ObjectUtils.jsm");
+
+importScripts("file_ioutils_test_fixtures.js");
+
+self.onmessage = async function (msg) {
+  const tmpDir = await PathUtils.getTempDir();
+
+  // IOUtils functionality is the same when called from the main thread, or a
+  // web worker. These tests are a modified subset of the main thread tests, and
+  // serve as a confidence check that the implementation is thread-safe.
+  await test_api_is_available_on_worker();
+  await test_full_read_and_write();
+  await test_move_file();
+  await test_copy_file();
+  await test_make_directory();
+
+  finish();
+  info("test_ioutils_worker.xhtml: Test finished");
+
+  async function test_api_is_available_on_worker() {
+    ok(self.IOUtils, "IOUtils is present in web workers");
+  }
+
+  async function test_full_read_and_write() {
+    // Write a file.
+    const tmpFileName = PathUtils.join(tmpDir, "test_ioutils_numbers.tmp");
+    const bytes = Uint8Array.of(...new Array(50).keys());
+    const bytesWritten = await IOUtils.write(tmpFileName, bytes);
+    is(bytesWritten, 50, "IOUtils::write can write entire byte array to file");
+
+    // Read it back.
+    let fileContents = await IOUtils.read(tmpFileName);
+    ok(
+      ObjectUtils.deepEqual(bytes, fileContents) &&
+        bytes.length == fileContents.length,
+      "IOUtils::read can read back entire file"
+    );
+
+    const tooManyBytes = bytes.length + 1;
+    fileContents = await IOUtils.read(tmpFileName, { maxBytes: tooManyBytes });
+    ok(
+      ObjectUtils.deepEqual(bytes, fileContents) &&
+        fileContents.length == bytes.length,
+      "IOUtils::read can read entire file when requested maxBytes is too large"
+    );
+
+    await cleanup(tmpFileName);
+  }
+
+  async function test_move_file() {
+    const src = PathUtils.join(tmpDir, "test_move_file_src.tmp");
+    const dest = PathUtils.join(tmpDir, "test_move_file_dest.tmp");
+    const bytes = Uint8Array.of(...new Array(50).keys());
+    await IOUtils.write(src, bytes);
+
+    await IOUtils.move(src, dest);
+    ok(
+      !(await fileExists(src)) && (await fileExists(dest)),
+      "IOUtils::move can move files from a worker"
+    );
+
+    await cleanup(dest);
+  }
+
+  async function test_copy_file() {
+    const tmpFileName = PathUtils.join(tmpDir, "test_ioutils_orig.tmp");
+    const destFileName = PathUtils.join(tmpDir, "test_ioutils_copy.tmp");
+    await createFile(tmpFileName, "original");
+
+    await IOUtils.copy(tmpFileName, destFileName);
+    ok(
+      (await fileExists(tmpFileName)) &&
+        (await fileHasTextContents(destFileName, "original")),
+      "IOUtils::copy can copy source to dest in same directory"
+    );
+
+    await cleanup(tmpFileName, destFileName);
+  }
+
+  async function test_make_directory() {
+    const dir = PathUtils.join(tmpDir, "test_make_dir.tmp.d");
+    await IOUtils.makeDirectory(dir);
+    const stat = await IOUtils.stat(dir);
+    is(
+      stat.type,
+      "directory",
+      "IOUtils::makeDirectory can make a new directory from a worker"
+    );
+
+    await cleanup(dir);
+  }
+};