Android espresso错误没有找到测试

Question

我尝试使用Espresso测试框架来测试我的应用。

ENV：

Android Studio RC1（来自金丝雀） 最新的Android Gradle插件，0.14 +

我按照此处所述添加了https://code.google.com/p/android-test-kit/wiki/Espresso#Getting_Started）

dependencies {
    //espresso - test framework

    androidTestCompile files('libs/espresso-1.1.jar',
            'libs/testrunner-1.1.jar',
            'libs/testrunner-runtime-1.1.jar')

    androidTestCompile 'com.google.guava:guava:14.0.1',
            'com.squareup.dagger:dagger:1.1.0',
            'org.hamcrest:hamcrest-core:1.1',
            'org.hamcrest:hamcrest-integration:1.1',
            'org.hamcrest:hamcrest-library:1.1'
}

 packagingOptions {
        exclude 'LICENSE.txt'
    }

defaultConfig {
        //espresso - test framework
        testInstrumentationRunner "com.google.android.apps.common.testing.testrunner.GoogleInstrumentationTestRunner"
    }

我也创建了简单的测试：

public class StartActivityTest extends ActivityInstrumentationTestCase2<StartActivity> {
    public StartActivityTest(Class<StartActivity> activityClass) {
        super(activityClass);
    }

    @Override
    public void setUp() throws Exception {
        super.setUp();
        // Espresso will not launch our activity for us, we must launch it via getActivity().
        getActivity();
    }

    public void testStartVisibility() {
        onView(withId(R.id.app_title))
                .check(matches(isDisplayed()));

        onView(withId(R.id.app_thumb))
                .check(matches(isDisplayed()));

        onView(withId(R.id.label))
                .check(matches(isDisplayed())
                );

        onView(withId(R.id.label)).check(matches(withText("Hello Espresso!")));
    }

}

但是我收到了一个错误：

com.android.builder.testing.ConnectedDevice > hasTests[Nexus 5 - 5.0] FAILED 
No tests found.                           
:app:connectedAndroidTest FAILED          

FAILURE: Build failed with an exception.

Answer 1

好的，我明白了。

我必须使用默认构造函数，如下所示：

public StartActivityTest() {
    super(StartActivity.class);
}

解决了这个问题。