Mock Partially using Dagger

How to mock partially using Dagger 2

Transcript

1. Mock Partially @fushiroyama
2. Android Testing Bootcamp • https://android-testing- bootcamp.connpass.com/ • https://android-testing- bootcamp.connpass.com/event/55274/
3. TL;DR • Use Dagger2 • Make Partial Component • Use it as Component Dependency • Write Mock Module of that Component • Prepare Test Application class • Specify it in Custom Test Runner
4. Normal Way
5. Application Module @Module public class ApplicationModule { @Provides public Info providesInfo() { return Info.newInstance(); } @Provides public Auth providesAuth() { return Auth.newInstance(); } }
6. Application Module @Module public class ApplicationModule { @Provides public Info providesInfo() { return Info.newInstance(); } @Provides public Auth providesAuth() { return Auth.newInstance(); } }
7. Application Module @Module public class ApplicationModule { @Provides public Info providesInfo() { return Info.newInstance(); } @Provides public Auth providesAuth() { return Auth.newInstance(); } }
8. Application Component @Component(modules = ApplicationModule.class) public interface ApplicationComponent { ActivityComponent plus(ActivityModule module); void inject(Foo foo); void inject(Bar bar); }
9. Application Component @Component(modules = ApplicationModule.class) public interface ApplicationComponent { ActivityComponent plus(ActivityModule module); void inject(Foo foo); void inject(Bar bar); }
10. Application Component @Component(modules = ApplicationModule.class) public interface ApplicationComponent { ActivityComponent plus(ActivityModule module); void inject(Foo foo); void inject(Bar bar); }
11. My Application @Override public void onCreate() { super.onCreate(); applicationComponent = DaggerApplicationComponent.builder() .applicationModule(new ApplicationModule(this)) .build(); } public ApplicationComponent getApplicationComponent() { return applicationComponent; }
12. My Application @Override public void onCreate() { super.onCreate(); applicationComponent = DaggerApplicationComponent.builder() .applicationModule(new ApplicationModule(this)) .build(); } public ApplicationComponent getApplicationComponent() { return applicationComponent; }
13. My Application @Override public void onCreate() { super.onCreate(); applicationComponent = DaggerApplicationComponent.builder() .applicationModule(new ApplicationModule(this)) .build(); } public ApplicationComponent getApplicationComponent() { return applicationComponent; }
14. Partial Mock
15. Application Module @Module public class ApplicationModule { @Provides public Info providesInfo() { return Info.newInstance(); } @Provides public Auth providesAuth() { return Auth.newInstance(); } }
16. Application Module @Module public class ApplicationModule { // removed }
17. API Module @Module public class ApiModule { @Provides public Info providesInfo() { return Info.newInstance(); } @Provides public Auth providesAuth() { return Auth.newInstance(); } }
18. API Module @Module public class ApiModule { @Provides public Info providesInfo() { return Info.newInstance(); } @Provides public Auth providesAuth() { return Auth.newInstance(); } }
19. API Module @Module public class ApiModule { @Provides public Info providesInfo() { return Info.newInstance(); } @Provides public Auth providesAuth() { return Auth.newInstance(); } }
20. API Component @Component(modules = ApiModule.class) public interface ApiComponent { Info getInfo(); Auth getAuth(); }
21. API Component @Component(modules = ApiModule.class) public interface ApiComponent { Info getInfo(); Auth getAuth(); }
22. API Component @Component(modules = ApiModule.class) public interface ApiComponent { Info getInfo(); Auth getAuth(); }
23. API Component @Component(modules = ApiModule.class) public interface ApiComponent { Info getInfo(); Auth getAuth(); } /FDFTTBSZ
24. Component Dependency
25. Application Component @Component(modules = ApplicationModule.class) public interface ApplicationComponent { ActivityComponent plus(ActivityModule module); void inject(Foo foo); void inject(Bar bar); }
26. Application Component @Component(modules = ApplicationModule.class) public interface ApplicationComponent { ActivityComponent plus(ActivityModule module); void inject(Foo foo); void inject(Bar bar); }
27. Application Component @Component(modules = ApplicationModule.class, dependencies = ApiComponent.clas) public interface ApplicationComponent { ActivityComponent plus(ActivityModule module); void inject(Foo foo); void inject(Bar bar); }
28. Application Component @Component(modules = ApplicationModule.class, dependencies = ApiComponent.clas) public interface ApplicationComponent { ActivityComponent plus(ActivityModule module); void inject(Foo foo); void inject(Bar bar); }
29. Custom Application
30. My Application @Override public void onCreate() { super.onCreate(); applicationComponent = DaggerApplicationComponent.builder() .applicationModule(new ApplicationModule(this)) .build(); } public ApplicationComponent getApplicationComponent() { return applicationComponent; }
31. My Application @Override public void onCreate() { super.onCreate(); ApiComponent apiComponent = DaggerApiComponent.builder() .apiModule(new ApiModule()) .build(); applicationComponent = DaggerApplicationComponent.builder() .applicationModule(new ApplicationModule(this)) .apiComponent(apiComponent) .build(); } public ApplicationComponent getApplicationComponent() { return applicationComponent; }
32. My Application @Override public void onCreate() { super.onCreate(); ApiComponent apiComponent = DaggerApiComponent.builder() .apiModule(new ApiModule()) .build(); applicationComponent = DaggerApplicationComponent.builder() .applicationModule(new ApplicationModule(this)) .apiComponent(apiComponent) .build(); } public ApplicationComponent getApplicationComponent() { return applicationComponent; }
33. My Application @Override public void onCreate() { super.onCreate(); ApiComponent apiComponent = DaggerApiComponent.builder() .apiModule(new ApiModule()) .build(); applicationComponent = DaggerApplicationComponent.builder() .applicationModule(new ApplicationModule(this)) .apiComponent(apiComponent) .build(); } public ApplicationComponent getApplicationComponent() { return applicationComponent; }
34. My Application @Override public void onCreate() { super.onCreate(); ApiComponent apiComponent = DaggerApiComponent.builder() .apiModule(new ApiModule()) .build(); applicationComponent = DaggerApplicationComponent.builder() .applicationModule(new ApplicationModule(this)) .apiComponent(apiComponent) .build(); } public ApplicationComponent getApplicationComponent() { return applicationComponent; }
35. Mock API Module
36. Mock API Module @Module public class MockApiModule { private final Auth mockAuthApi; private final Info mockInfoApi; public MockApiModule() { mockAuthApi = Mockito.mock(Auth.class); mockInfoApi = Mockito.mock(Info.class); } @Provides Info providesInfo() { return mockInfoApi; } @Provides public Auth providesAuth() { return mockAuthApi; } }
37. Mock API Module @Module public class MockApiModule { private final Auth mockAuthApi; private final Info mockInfoApi; public MockApiModule() { mockAuthApi = Mockito.mock(Auth.class); mockInfoApi = Mockito.mock(Info.class); } @Provides Info providesInfo() { return mockInfoApi; } @Provides public Auth providesAuth() { return mockAuthApi; } }
38. Mock API Component
39. Mock API Component @Component(modules = MockApiModule.class) public interface MockApiComponent extends ApiComponent { }
40. Mock API Component @Component(modules = MockApiModule.class) public interface MockApiComponent extends ApiComponent { }
41. Mock API Component @Component(modules = MockApiModule.class) public interface MockApiComponent extends ApiComponent { }
42. Test Application
43. Test Application public class TestApplication extends MyApplication { @Override public ApplicationComponent getApplicationComponent() { MockApiComponent mockApiComponent = DaggerMockApiComponent.builder() .mockApiModule(new MockApiModule()) .build(); return DaggerApplicationComponent.builder() .applicationModule(new ApplicationModule(this)) .apiComponent(mockApiComponent) .build(); } }
44. Test Application public class TestApplication extends MyApplication { @Override public ApplicationComponent getApplicationComponent() { MockApiComponent mockApiComponent = DaggerMockApiComponent.builder() .mockApiModule(new MockApiModule()) .build(); return DaggerApplicationComponent.builder() .applicationModule(new ApplicationModule(this)) .apiComponent(mockApiComponent) .build(); } }
45. Test Application public class TestApplication extends MyApplication { @Override public ApplicationComponent getApplicationComponent() { MockApiComponent mockApiComponent = DaggerMockApiComponent.builder() .mockApiModule(new MockApiModule()) .build(); return DaggerApplicationComponent.builder() .applicationModule(new ApplicationModule(this)) .apiComponent(mockApiComponent) .build(); } }
46. Test Application public class TestApplication extends MyApplication { @Override public ApplicationComponent getApplicationComponent() { MockApiComponent mockApiComponent = DaggerMockApiComponent.builder() .mockApiModule(new MockApiModule()) .build(); return DaggerApplicationComponent.builder() .applicationModule(new ApplicationModule(this)) .apiComponent(mockApiComponent) .build(); } }
47. Test Application public class TestApplication extends MyApplication { private MockApiComponent mockApiComponent; @Override public ApplicationComponent getApplicationComponent() { mockApiComponent = DaggerMockApiComponent.builder() .mockApiModule(new MockApiModule()) .build(); return DaggerApplicationComponent.builder() .applicationModule(new ApplicationModule(this)) .apiComponent(mockApiComponent) .build(); } public MockApiComponent getMockApiComponent() { return mockApiComponent; } }
48. Test Application public class TestApplication extends MyApplication { private MockApiComponent mockApiComponent; @Override public ApplicationComponent getApplicationComponent() { mockApiComponent = DaggerMockApiComponent.builder() .mockApiModule(new MockApiModule()) .build(); return DaggerApplicationComponent.builder() .applicationModule(new ApplicationModule(this)) .apiComponent(mockApiComponent) .build(); } public MockApiComponent getMockApiComponent() { return mockApiComponent; } }
49. Test Application public class TestApplication extends MyApplication { private MockApiComponent mockApiComponent; @Override public ApplicationComponent getApplicationComponent() { mockApiComponent = DaggerMockApiComponent.builder() .mockApiModule(new MockApiModule()) .build(); return DaggerApplicationComponent.builder() .applicationModule(new ApplicationModule(this)) .apiComponent(mockApiComponent) .build(); } public MockApiComponent getMockApiComponent() { return mockApiComponent; } }
50. Mock Test Runner
51. Mock Test Runner public class MockTestRunner extends AndroidJUnitRunner { @Override public Application newApplication(ClassLoader cl, String className, Context context) throws InstantiationException, IllegalAccessException, ClassNotFoundException { String testApplicationClassName = TestApplication.class.getCanonicalName(); return super.newApplication(cl, testApplicationClassName, context); } }
52. Mock Test Runner public class MockTestRunner extends AndroidJUnitRunner { @Override public Application newApplication(ClassLoader cl, String className, Context context) throws InstantiationException, IllegalAccessException, ClassNotFoundException { String testApplicationClassName = TestApplication.class.getCanonicalName(); return super.newApplication(cl, testApplicationClassName, context); } }
53. Mock Test Runner public class MockTestRunner extends AndroidJUnitRunner { @Override public Application newApplication(ClassLoader cl, String className, Context context) throws InstantiationException, IllegalAccessException, ClassNotFoundException { String testApplicationClassName = TestApplication.class.getCanonicalName(); return super.newApplication(cl, testApplicationClassName, context); } }
54. Write Your Test!
55. Your Android Test @RunWith(AndroidJUnit4.class) public class YourAndroidTest { @Before public void setUp() throws Exception { TestApplication application = (TestApplication) InstrumentationRegistry.getTargetContext().getApplicationContext(); MockApiComponent mockApiComponent = application.getMockApiComponent(); Info info = mockApiComponent.getInfo(); when(info.access(any())).thenReturn(result); } @Test public void doYourTest() { } }
56. Your Android Test @RunWith(AndroidJUnit4.class) public class YourAndroidTest { @Before public void setUp() throws Exception { TestApplication application = (TestApplication) InstrumentationRegistry.getTargetContext().getApplicationContext(); MockApiComponent mockApiComponent = application.getMockApiComponent(); Info info = mockApiComponent.getInfo(); when(info.access(any())).thenReturn(result); } @Test public void doYourTest() { } }
57. Your Android Test @RunWith(AndroidJUnit4.class) public class YourAndroidTest { @Before public void setUp() throws Exception { TestApplication application = (TestApplication) InstrumentationRegistry.getTargetContext().getApplicationContext(); MockApiComponent mockApiComponent = application.getMockApiComponent(); Info info = mockApiComponent.getInfo(); when(info.access(any())).thenReturn(result); } @Test public void doYourTest() { } }
58. Your Android Test @RunWith(AndroidJUnit4.class) public class YourAndroidTest { @Before public void setUp() throws Exception { TestApplication application = (TestApplication) InstrumentationRegistry.getTargetContext().getApplicationContext(); MockApiComponent mockApiComponent = application.getMockApiComponent(); Info info = mockApiComponent.getInfo(); when(info.access(any())).thenReturn(result); } @Test public void doYourTest() { } }
59. Your Android Test @RunWith(AndroidJUnit4.class) public class YourAndroidTest { @Before public void setUp() throws Exception { TestApplication application = (TestApplication) InstrumentationRegistry.getTargetContext().getApplicationContext(); MockApiComponent mockApiComponent = application.getMockApiComponent(); Info info = mockApiComponent.getInfo(); when(info.access(any())).thenReturn(result); } @Test public void doYourTest() { } }
60. Use Your Runner android { defaultConfig { testInstrumentationRunner "your.package.runner.MockTestRunner" } }
61. Thank you!