mirror of
https://github.com/flutter/flutter
synced 2024-10-13 19:52:53 +00:00
169 lines
5 KiB
Dart
169 lines
5 KiB
Dart
// Copyright 2016 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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import 'dart:async';
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import 'package:flutter_tools/src/base/utils.dart';
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import 'package:flutter_tools/src/base/version.dart';
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import 'package:test/test.dart';
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void main() {
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group('SettingsFile', () {
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test('parse', () {
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final SettingsFile file = new SettingsFile.parse('''
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# ignore comment
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foo=bar
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baz=qux
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''');
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expect(file.values['foo'], 'bar');
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expect(file.values['baz'], 'qux');
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expect(file.values, hasLength(2));
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});
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});
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group('uuid', () {
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// xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx
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test('simple', () {
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final Uuid uuid = new Uuid();
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final String result = uuid.generateV4();
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expect(result.length, 36);
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expect(result[8], '-');
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expect(result[13], '-');
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expect(result[18], '-');
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expect(result[23], '-');
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});
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test('can parse', () {
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final Uuid uuid = new Uuid();
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final String result = uuid.generateV4();
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expect(int.parse(result.substring(0, 8), radix: 16), isNotNull);
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expect(int.parse(result.substring(9, 13), radix: 16), isNotNull);
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expect(int.parse(result.substring(14, 18), radix: 16), isNotNull);
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expect(int.parse(result.substring(19, 23), radix: 16), isNotNull);
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expect(int.parse(result.substring(24, 36), radix: 16), isNotNull);
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});
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test('special bits', () {
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final Uuid uuid = new Uuid();
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String result = uuid.generateV4();
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expect(result[14], '4');
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expect(result[19].toLowerCase(), isIn('89ab'));
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result = uuid.generateV4();
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expect(result[19].toLowerCase(), isIn('89ab'));
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result = uuid.generateV4();
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expect(result[19].toLowerCase(), isIn('89ab'));
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});
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test('is pretty random', () {
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final Set<String> set = new Set<String>();
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Uuid uuid = new Uuid();
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for (int i = 0; i < 64; i++) {
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final String val = uuid.generateV4();
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expect(set, isNot(contains(val)));
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set.add(val);
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}
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uuid = new Uuid();
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for (int i = 0; i < 64; i++) {
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final String val = uuid.generateV4();
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expect(set, isNot(contains(val)));
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set.add(val);
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}
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uuid = new Uuid();
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for (int i = 0; i < 64; i++) {
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final String val = uuid.generateV4();
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expect(set, isNot(contains(val)));
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set.add(val);
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}
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});
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});
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group('Version', () {
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test('can parse and compare', () {
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expect(Version.unknown.toString(), equals('unknown'));
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expect(new Version(null, null, null).toString(), equals('0'));
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final Version v1 = new Version.parse('1');
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expect(v1.major, equals(1));
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expect(v1.minor, equals(0));
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expect(v1.patch, equals(0));
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expect(v1, greaterThan(Version.unknown));
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final Version v2 = new Version.parse('1.2');
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expect(v2.major, equals(1));
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expect(v2.minor, equals(2));
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expect(v2.patch, equals(0));
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final Version v3 = new Version.parse('1.2.3');
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expect(v3.major, equals(1));
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expect(v3.minor, equals(2));
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expect(v3.patch, equals(3));
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final Version v4 = new Version.parse('1.12');
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expect(v4, greaterThan(v2));
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expect(v3, greaterThan(v2));
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expect(v2, greaterThan(v1));
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final Version v5 = new Version(1, 2, 0, text: 'foo');
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expect(v5, equals(v2));
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expect(new Version.parse('Preview2.2'), isNull);
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});
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});
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group('Poller', () {
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const Duration kShortDelay = Duration(milliseconds: 100);
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Poller poller;
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tearDown(() {
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poller?.cancel();
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});
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test('fires at start', () async {
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bool called = false;
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poller = new Poller(() {
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called = true;
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}, const Duration(seconds: 1));
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expect(called, false);
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await new Future<Null>.delayed(kShortDelay);
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expect(called, true);
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});
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test('runs periodically', () async {
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// Ensure we get the first (no-delay) callback, and one of the periodic callbacks.
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int callCount = 0;
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poller = new Poller(() {
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callCount++;
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}, new Duration(milliseconds: kShortDelay.inMilliseconds ~/ 2));
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expect(callCount, 0);
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await new Future<Null>.delayed(kShortDelay);
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expect(callCount, greaterThanOrEqualTo(2));
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});
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test('no quicker then the periodic delay', () async {
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// Make sure that the poller polls at delay + the time it took to run the callback.
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final Completer<Duration> completer = new Completer<Duration>();
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DateTime firstTime;
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poller = new Poller(() async {
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if (firstTime == null)
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firstTime = new DateTime.now();
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else
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completer.complete(new DateTime.now().difference(firstTime));
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// introduce a delay
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await new Future<Null>.delayed(kShortDelay);
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}, kShortDelay);
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final Duration duration = await completer.future;
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expect(duration, greaterThanOrEqualTo(new Duration(milliseconds: kShortDelay.inMilliseconds * 2)));
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});
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});
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}
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