[英]flutter. Mock api call in widget test
I'm trying to create widget test for login screen in application. 我正在尝试为应用程序中的登录屏幕创建窗口小部件测试。 So i want to test several things: 1. That i can find all needed widgets on screen 2. Empty fields validation 3. Wrong login or password scenario 4. Successfull login scenario
所以我想测试几件事:1.我可以在屏幕上找到所有需要的小部件2.空字段验证3.错误的登录或密码方案4.成功的登录方案
But i stuck with items 3 and 4. As i found out on widget tests flutter doesn't allow api calls - so responce is 400 in every case. 但是我坚持第3项和第4项。正如我在小部件测试中发现的那样,flutter不允许api调用-因此在每种情况下响应都是400。
I found a way to write test using mockHtmlClient. 我找到了一种使用mockHtmlClient编写测试的方法。 Inspired by this topic https://groups.google.com/forum/#!msg/flutter-dev/AnqDqgQ6vus/8BoHfxoNBwAJ
受到本主题的启发https://groups.google.com/forum/#!msg/flutter-dev/AnqDqgQ6vus/8BoHfxoNBwAJ
HttpOverrides.runZoned(() async {
// All code inside here will use the HttpClient returned below.
await tester.pumpWidget(buildTestableWidget(LoginScreen()));
Finder emailField = find.byKey(new Key('email'));
await tester.enterText(emailField, 'some@some.some');
Finder passwordField = find.byKey(Key("password"));
await tester.enterText(passwordField, 'some');
// tap on the login button
Finder loginButton = find.byKey(new Key('login'));
await tester.tap(loginButton);
// 'pump' the tester again. This causes the widget to rebuild
await tester.pump();
//sleep(const Duration(seconds:2));
// await tester.pump();
//find validation text on SnackBar
expect(find.text("Invalid email or password"), findsOneWidget);
}, createHttpClient: createMockHttpClient);
My question is - How can i implement MockHttpClient so i could send correct API responce for 3 and 4 scenarious. 我的问题是- 我如何实现MockHttpClient以便可以为3和4个方案发送正确的API响应。 I can get json answer from real api on this scenarious.
我可以在这种情况下从真正的api获得json答案。 There is implementation of createMockHttpClient for case of NetworkImage in the dicsussion from the linked i posted above.
在上面我发布的链接中,有针对性地针对NetworkImage的情况实现了createMockHttpClient的实现。
I also wasn't able to make runZoned
with createHttpClient
work. 我也无法使
runZoned
与createHttpClient
工作。
I use 我用
setUp(() {
HttpOverrides.global = TestHttpOverrides({
'www.example.com/dummy.png':
dummyAvatarImageData,
imageThumbUrl: dummyPngImageData,
});
});
with 同
class TestHttpOverrides extends HttpOverrides {
TestHttpOverrides(this.data);
final Map<Uri, List<int>> data;
@override
HttpClient createHttpClient(SecurityContext context) =>
createMockImageHttpClient(context, data);
}
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