Android Unit Test
Save time & clear your unit tests on Android !
Use annotations to inject Context, Activities, Fragments and Views into your tests
Usage
@RunWith(CustomTestRunner.class)
public class MainActivityTest {
@Rule public AndroidUnitTest androidUnitTest = AndroidUnitTest.rule();
@RContect Context context; //inject the app context
@RActivity MainActivity activity; //generates the tested activity
@Mock User user; //mock an user
@Test
public void testDisplayUser() throws Exception {
// Given
given(user.getName()).willReturn("florent");
// When
activity.display(user);
// Then
assertThat(activity.textView.getText()).isEqualTo("florent");
}
}
TestRunner
Simplify Robolectric Integration
public class CustomTestRunner extends AndroidUnitTestRunner {
public CustomTestRunner(Class<?> testClass) throws InitializationError {
super(testClass, BuildConfig.FLAVOR, BuildConfig.BUILD_TYPE, BuildConfig.APPLICATION_ID, TestMyApplication.class);
}
}
Activity
Set initial activity state (by default activity is created())
@RunWith(CustomTestRunner.class)
public class MyTest {
@Rule public AndroidUnitTest androidUnitTest = AndroidUnitTest.rule();
@RActivity(state = CREATED / STARTED / RESUMED / PAUSED / STOPPED / DESTROYED)
MainActivity activity;
@Test
public void testMyFunction(){
androidUnitTest.activity().resume();
}
}
Note that the injected activity is a spy !
verify(activity, times(2)).someMethod(anyInt());
Context
Retrieve Context easily
@RunWith(CustomTestRunner.class)
public class MyTest {
@Rule public AndroidUnitTest androidUnitTest = AndroidUnitTest.rule();
@RContext Context context;
}
Note that the injected context is a spy !
verify(context, times(2)).someMethod(anyInt());
View
@RunWith(CustomTestRunner.class)
public class MyTest {
@Rule public AndroidUnitTest androidUnitTest = AndroidUnitTest.rule();
@RView CustomView customView;
@Test
public void testDisplayUser() throws Exception {
// Given
given(user.getName()).willReturn("florent");
// When
mainView.display(user);
// Then
verify(customView).displayText("florent");
}
}
Note that the injected view is a spy !
Fragment
@RunWith(CustomTestRunner.class)
public class MyTest {
@Rule public AndroidUnitTest androidUnitTest = AndroidUnitTest.rule();
@RFragment MyFragment myFragment;
@Mock User user;
@Test
public void testDisplayUser() throws Exception {
// Given
given(user.getName()).willReturn("florent");
// When
myFragment.display(user);
// Then
verify(myFragment).displayText("florent");
}
}
@RunWith(CustomTestRunner.class)
public class MyTest {
@Rule public AndroidUnitTest androidUnitTest = AndroidUnitTest.rule();
@RFragment(
attached = true / false,
tag = "fragmentTag"
)
MyFragment myFragment;
@Test
public void testMyFunction() throws Exception {
androidUnitTest.fragment().addToActivity(myFragment)
}
}
Note that the injected fragment is a spy !
Download
testCompile 'com.github.florent37:androidunittest:(last version)'
testCompile 'junit:junit:4.12'
testCompile 'org.mockito:mockito-core:1.10.19'
testCompile 'org.robolectric:robolectric:3.0'
Credits
Author: Florent Champigny http://www.florentchampigny.com/
License
Copyright 2016 florent37, Inc.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.