我有以下 Activity，如果配置有误，它会抛出异常。

public class MyActivity extends AppCompatActivity {

    @Override
    protected void onCreate(final Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        throw new IllegalStateException("something went wrong");
    }
}

我尝试为此 ActivityInstrumentationTestCase2 编写测试

public void testException() throws Exception {
    try {
        getActivity().onCreate(null);
        fail();
    } catch (IllegalStateException e) {
        assertThat(e.getMessage()).contains("something went wrong");
    }
}

它抛出正确的 Exception 但由于 ActivityInstrumentationTestCase2< 的一些内部="">Sandboxing 而没有在我的 catch block 中运行.

所以我用纯 Java 尝试了一下

public void testException() throws Exception {
    final MockNavigationDrawerActivity activity = Mockito.mock(MockNavigationDrawerActivity.class);
    Mockito.doCallRealMethod().when(activity).onCreate(null);
    try {
        activity.onCreate(null);
        fail();
    } catch (IllegalStateException e) {
        assertThat(e.getMessage()).contains("something went wrong");
    }
}

这是行不通的

java.lang.AbstractMethodError: abstract method "boolean org.mockito.internal.invocation.AbstractAwareMethod.isAbstract()"
at org.mockito.internal.invocation.InvocationImpl.callRealMethod(InvocationImpl.java:109)
at org.mockito.internal.stubbing.answers.CallsRealMethods.answer(CallsRealMethods.java:41)
at org.mockito.internal.stubbing.StubbedInvocationMatcher.answer(StubbedInvocationMatcher.java:34)
at org.mockito.internal.handler.MockHandlerImpl.handle(MockHandlerImpl.java:91)
at org.mockito.internal.handler.NullResultGuardian.handle(NullResultGuardian.java:29)
at org.mockito.internal.handler.InvocationNotifierHandler.handle(InvocationNotifierHandler.java:38)
at com.google.dexmaker.mockito.InvocationHandlerAdapter.invoke(InvocationHandlerAdapter.java:49)
at MockNavigationDrawerActivity_Proxy.onCreate(MockNavigationDrawerActivity_Proxy.generated)

知道如何测试这个简单案例吗？

更新#1

我什么都试过了。我将它减少到绝对最小值，但这是行不通的。

public void testUpdate1() throws Exception {
    try {
        getActivity();
        fail();
    } catch (Exception e) {
        assertThat(e.getMessage()).contains("something went wrong");
    }
}

堆栈跟踪:

java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example/com.example.MyActivity}: java.lang.IllegalStateException: something went wrong
        at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2298)
        at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2360)
        at android.app.ActivityThread.access$800(ActivityThread.java:144)
        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1278)
        at android.os.Handler.dispatchMessage(Handler.java:102)
        at android.os.Looper.loop(Looper.java:135)
        at android.app.ActivityThread.main(ActivityThread.java:5221)
        at java.lang.reflect.Method.invoke(Native Method)
        at java.lang.reflect.Method.invoke(Method.java:372)
        at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:899)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:694)
        Caused by: java.lang.IllegalStateException: something went wrong
        at com.example.MyActivity.onCreate(MyActivity.java:28)
        at android.app.Activity.performCreate(Activity.java:5933)
        at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1105)
        at android.support.test.runner.MonitoringInstrumentation.callActivityOnCreate(MonitoringInstrumentation.java:346)
        at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2251)
        ... 10 more

更新 #2

我从头开始。生成新项目，抛出异常

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    throw new IllegalStateException("something");
}

试图用 Throwable 捕获它。

public class MainActivityTest extends ActivityInstrumentationTestCase2<MainActivity> {

    public MainActivityTest() {
        super(MainActivity.class);
    }

    public void testOnCreate() throws Exception {
        try {
            getActivity();
            fail();
        } catch (Throwable throwable) {
            assertTrue(throwable.getCause().getMessage().contains("something"));
        }

    }
}

我得到了这个(完整的)堆栈跟踪，它不会导致我的测试。系统似乎调用了 onCreate，可能来自不同的进程，而不是我的测试。

Process: com.pascalwelsch.onccreatetest, PID: 3915    java.lang.RuntimeException: Unable to start activity ComponentInfo{com.pascalwelsch.onccreatetest/com.pascalwelsch.onccreatetest.MainActivity}: java.lang.IllegalStateException: something
        at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2298)
        at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2360)
        at android.app.ActivityThread.access$800(ActivityThread.java:144)
        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1278)
        at android.os.Handler.dispatchMessage(Handler.java:102)
        at android.os.Looper.loop(Looper.java:135)
        at android.app.ActivityThread.main(ActivityThread.java:5221)
        at java.lang.reflect.Method.invoke(Native Method)
        at java.lang.reflect.Method.invoke(Method.java:372)
        at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:899)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:694)
 Caused by: java.lang.IllegalStateException: something
        at com.pascalwelsch.onccreatetest.MainActivity.onCreate(MainActivity.java:15)
        at android.app.Activity.performCreate(Activity.java:5933)
        at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1105)
        at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2251)
            at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2360)
            at android.app.ActivityThread.access$800(ActivityThread.java:144)
            at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1278)
            at android.os.Handler.dispatchMessage(Handler.java:102)
            at android.os.Looper.loop(Looper.java:135)
            at android.app.ActivityThread.main(ActivityThread.java:5221)
            at java.lang.reflect.Method.invoke(Native Method)
            at java.lang.reflect.Method.invoke(Method.java:372)
            at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:899)

最佳答案

您正在抛出 IllegalArgumentException 并捕获 IllegalStateException。您可以添加另一个捕获 Exception 的 catch block - 它会起作用。

关于android - 测试 Activity onCreate Exception，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/30217446/