test('Basics', () => {
		return extfs.mkdirp(parentDir).then(() => {
			extfs.writeFileAndFlushSync(storageFile, '');

			let service = new FileStorage(storageFile, () => null);

			service.setItem('some.key', 'some.value');
			assert.equal(service.getItem('some.key'), 'some.value');

			service.removeItem('some.key');
			assert.equal(service.getItem('some.key', 'some.default'), 'some.default');

			assert.ok(!service.getItem('some.unknonw.key'));

			service.setItem('some.other.key', 'some.other.value');

			service = new FileStorage(storageFile, () => null);

			assert.equal(service.getItem('some.other.key'), 'some.other.value');

			service.setItem('some.other.key', 'some.other.value');
			assert.equal(service.getItem('some.other.key'), 'some.other.value');

			service.setItem('some.undefined.key', void 0);
			assert.equal(service.getItem('some.undefined.key', 'some.default'), 'some.default');

			service.setItem('some.null.key', null);
			assert.equal(service.getItem('some.null.key', 'some.default'), 'some.default');
		});
	});

		return new TPromise<string>((c, e) => mkdirp(result, null, err => err ? e(err) : c(result)));