我尝试使用Mockito测试按钮功能。代码包括Layout / SampleActivity / UnitTest主要内容:
布局文件定义:
android:text="testbtnmock"
android:id="@+id/btn_testbtnmock"
android:onClick="testBtnMock"
SampleActivity文件定义
public void testBtnMock(View view) {
System.out.println("value:"+getInt());
}
public int getInt(){
return 0;
}
UnitTest文件定义
@RunWith(RobolectricGradleTestRunner.class)
@Config(constants = BuildConfig.class)
public class SampleActivityTest {
private SampleActivity sampleActivity;
private Button testBtnMock;
@Before
public void setUp() {
ShadowLog.stream = System.out;
}
@Test
public void testBtnMock() {
sampleActivity = Robolectric.setupActivity(SampleActivity.class);
SampleActivity spySampleActivity = spy(sampleActivity);
when(spySampleActivity.getInt()).thenReturn(100);
//spySampleActivity.testBtnMock(mock(View.class)); //it is working , print 100
testBtnMock = (Button) sampleActivity.findViewById(R.id.btn_testbtnmock);
testBtnMock.performClick(); //it is not work , print 0 ,mock invalid
}
}
我的问题是:
spySampleActivity.testBtnMock(mock(View.class));
来触发testBtnMock(View v)
的功能。它工作并打印100。testBtnMock.performClick();
无法正常工作并打印0为什么?如何解决?答案 0 :(得分:0)
这很容易解释。
XML属性将用于通过反射(How does the android Xml attribute android:onClick="..." work behind the scenes?)调用方法。
因此,通过一些简化,将使用按钮的上下文,并通过反射调用方法。按钮在通货膨胀期间获得背景,它是不间谍活动的参考。这就是你的测试中调用真实方法的原因。
通过对间谍活动的引用来调用方法时,它可以正常工作。
如何解决:
类似的东西:
public class IntegerProvider {
public int getInt(){
return 0;
}
}
public class SampleActivity {
IntegerProvider intProvider;
public void testBtnMock(View view) {
System.out.println("value:" + intProvider.getInt());
}
}
@Test
public void testBtnMock() {
sampleActivity = Robolectric.setupActivity(SampleActivity.class);
IntegerProvider providerMock = mock(IntegerProvider.class);
when(providerMock.getInt()).thenReturn(100);
sampleActivity.intProvider = providerMock;
testBtnMock = (Button) sampleActivity.findViewById(R.id.btn_testbtnmock);
testBtnMock.performClick();
}