mirror of
https://github.com/flutter/flutter
synced 2024-10-13 11:42:54 +00:00
169 lines
6.5 KiB
Dart
169 lines
6.5 KiB
Dart
// Copyright 2014 The Flutter 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:file/file.dart';
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import 'package:flutter_tools/src/base/common.dart';
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import 'package:flutter_tools/src/base/file_system.dart';
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import 'package:vm_service/vm_service.dart';
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import '../src/common.dart';
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import 'test_data/hot_reload_project.dart';
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import 'test_driver.dart';
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import 'test_utils.dart';
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void main() {
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Directory tempDir;
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final HotReloadProject _project = HotReloadProject();
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FlutterRunTestDriver _flutter;
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setUp(() async {
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tempDir = createResolvedTempDirectorySync('hot_reload_test.');
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await _project.setUpIn(tempDir);
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_flutter = FlutterRunTestDriver(tempDir);
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});
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tearDown(() async {
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await _flutter?.stop();
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tryToDelete(tempDir);
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});
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test('hot reload works without error', () async {
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await _flutter.run();
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await _flutter.hotReload();
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});
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test('newly added code executes during hot reload', () async {
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final StringBuffer stdout = StringBuffer();
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final StreamSubscription<String> subscription = _flutter.stdout.listen(stdout.writeln);
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await _flutter.run();
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_project.uncommentHotReloadPrint();
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try {
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await _flutter.hotReload();
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expect(stdout.toString(), contains('(((((RELOAD WORKED)))))'));
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} finally {
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await subscription.cancel();
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}
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});
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test('reloadMethod triggers hot reload behavior', () async {
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final StringBuffer stdout = StringBuffer();
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final StreamSubscription<String> subscription = _flutter.stdout.listen(stdout.writeln);
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await _flutter.run();
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_project.uncommentHotReloadPrint();
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try {
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final String libraryId = _project.buildBreakpointUri.toString();
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await _flutter.reloadMethod(libraryId: libraryId, classId: 'MyApp');
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// reloadMethod does not wait for the next frame, to allow scheduling a new
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// update while the previous update was pending.
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await Future<void>.delayed(const Duration(seconds: 1));
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expect(stdout.toString(), contains('(((((RELOAD WORKED)))))'));
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} finally {
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await subscription.cancel();
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}
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});
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test('hot restart works without error', () async {
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await _flutter.run();
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await _flutter.hotRestart();
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});
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test('breakpoints are hit after hot reload', () async {
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Isolate isolate;
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final Completer<void> sawTick1 = Completer<void>();
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final Completer<void> sawDebuggerPausedMessage = Completer<void>();
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final StreamSubscription<String> subscription = _flutter.stdout.listen(
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(String line) {
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if (line.contains('((((TICK 1))))')) {
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expect(sawTick1.isCompleted, isFalse);
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sawTick1.complete();
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}
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if (line.contains('The application is paused in the debugger on a breakpoint.')) {
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expect(sawDebuggerPausedMessage.isCompleted, isFalse);
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sawDebuggerPausedMessage.complete();
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}
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},
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);
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await _flutter.run(withDebugger: true, startPaused: true);
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await _flutter.resume(); // we start paused so we can set up our TICK 1 listener before the app starts
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unawaited(sawTick1.future.timeout(
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const Duration(seconds: 5),
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onTimeout: () { print('The test app is taking longer than expected to print its synchronization line...'); },
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));
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await sawTick1.future; // after this, app is in steady state
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await _flutter.addBreakpoint(
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_project.scheduledBreakpointUri,
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_project.scheduledBreakpointLine,
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);
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await _flutter.hotReload(); // reload triggers code which eventually hits the breakpoint
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isolate = await _flutter.waitForPause();
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expect(isolate.pauseEvent.kind, equals(EventKind.kPauseBreakpoint));
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await _flutter.resume();
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await _flutter.addBreakpoint(
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_project.buildBreakpointUri,
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_project.buildBreakpointLine,
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);
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bool reloaded = false;
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final Future<void> reloadFuture = _flutter.hotReload().then((void value) { reloaded = true; });
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print('waiting for pause...');
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isolate = await _flutter.waitForPause();
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expect(isolate.pauseEvent.kind, equals(EventKind.kPauseBreakpoint));
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print('waiting for debugger message...');
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await sawDebuggerPausedMessage.future;
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expect(reloaded, isFalse);
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print('waiting for resume...');
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await _flutter.resume();
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print('waiting for reload future...');
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await reloadFuture;
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expect(reloaded, isTrue);
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reloaded = false;
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print('subscription cancel...');
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await subscription.cancel();
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});
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test("hot reload doesn't reassemble if paused", () async {
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final Completer<void> sawTick1 = Completer<void>();
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final Completer<void> sawDebuggerPausedMessage1 = Completer<void>();
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final Completer<void> sawDebuggerPausedMessage2 = Completer<void>();
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final StreamSubscription<String> subscription = _flutter.stdout.listen(
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(String line) {
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print('[LOG]:"$line"');
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if (line.contains('(((TICK 1)))')) {
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expect(sawTick1.isCompleted, isFalse);
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sawTick1.complete();
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}
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if (line.contains('The application is paused in the debugger on a breakpoint.')) {
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expect(sawDebuggerPausedMessage1.isCompleted, isFalse);
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sawDebuggerPausedMessage1.complete();
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}
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if (line.contains('The application is paused in the debugger on a breakpoint; interface might not update.')) {
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expect(sawDebuggerPausedMessage2.isCompleted, isFalse);
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sawDebuggerPausedMessage2.complete();
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}
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},
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);
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await _flutter.run(withDebugger: true);
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await Future<void>.delayed(const Duration(seconds: 1));
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await sawTick1.future;
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await _flutter.addBreakpoint(
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_project.buildBreakpointUri,
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_project.buildBreakpointLine,
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);
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bool reloaded = false;
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await Future<void>.delayed(const Duration(seconds: 1));
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final Future<void> reloadFuture = _flutter.hotReload().then((void value) { reloaded = true; });
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final Isolate isolate = await _flutter.waitForPause();
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expect(isolate.pauseEvent.kind, equals(EventKind.kPauseBreakpoint));
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expect(reloaded, isFalse);
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await sawDebuggerPausedMessage1.future; // this is the one where it say "uh, you broke into the debugger while reloading"
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await reloadFuture; // this is the one where it times out because you're in the debugger
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expect(reloaded, isTrue);
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await _flutter.hotReload(); // now we're already paused
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await sawDebuggerPausedMessage2.future; // so we just get told that nothing is going to happen
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await _flutter.resume();
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await subscription.cancel();
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});
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}
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