diff -r 000000000000 -r 6474c204b198 addon-sdk/source/test/test-tmp-file.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/addon-sdk/source/test/test-tmp-file.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,27 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+ "use strict";
+
+const tmp = require("sdk/test/tmp-file");
+const file = require("sdk/io/file");
+
+const testFolderURL = module.uri.split('test-tmp-file.js')[0];
+
+exports.testCreateFromString = function (assert) {
+  let expectedContent = "foo";
+  let path = tmp.createFromString(expectedContent);
+  let content = file.read(path);
+  assert.equal(content, expectedContent,
+               "Temporary file contains the expected content");
+}
+
+exports.testCreateFromURL = function (assert) {
+  let url = testFolderURL + "test-tmp-file.txt";
+  let path = tmp.createFromURL(url);
+  let content = file.read(path);
+  assert.equal(content, "foo",
+               "Temporary file contains the expected content");
+}
+
+require("sdk/test").run(exports);