Question

我是仪器测试的新手。我正在尝试使用AndroidJUnitRunner进行基本测试。这是我的傻瓜：

apply plugin: 'com.android.application'

android {
    compileSdkVersion 24
    buildToolsVersion "25.0.0"
    defaultConfig {
        applicationId "com.kaushik.mycart.ui"
        minSdkVersion 15
        targetSdkVersion 24
        versionCode 1
        versionName "1.0"
        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
        jackOptions.enabled true
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }
    compileOptions {
        sourceCompatibility JavaVersion.VERSION_1_8
        targetCompatibility JavaVersion.VERSION_1_8
    }
}

dependencies {
    compile fileTree(dir: 'libs', include: ['*.jar'])
    androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.2', {
        exclude group: 'com.android.support', module: 'support-annotations'
    })

    ..........................
    ..........................

    testCompile 'junit:junit:4.12'
    testCompile 'org.mockito:mockito-core:1.10.19'
    androidTestCompile 'org.hamcrest:hamcrest-library:1.3'

}

然后我添加了一个名为＆＃39; ProductListActivityTest＆＃39;用AndroidJunitRunner测试。它在下面：

package com.kaushik.myredmart.ui;
// all includes
@RunWith(AndroidJUnit4.class)
public class ProductListActivityTest {

    @Rule
    public ActivityTestRule<ProductListActivity> rule  = new  ActivityTestRule<>(ProductListActivity.class);

    @Test
    public void ensureListViewIsPresent() throws Exception {
        ProductListActivity activity = rule.getActivity();
        View viewByIdw = activity.findViewById(R.id.productListView);
        assertThat(viewByIdw,notNullValue());
        assertThat(viewByIdw, instanceOf(RecyclerView.class));
        RecyclerView productListView = (RecyclerView) viewByIdw;
        RecyclerView.Adapter adapter = productRecyclerView.getAdapter();
        assertThat(adapter, instanceOf(ProductAdapter.class));

    }
}

我在＆＃39; androidTest＆＃39;中没有添加任何其他文件。我还想提一下我的源代码中有Application类文件。现在，每当我尝试运行测试时，都会出现以下错误：

Started running tests
Test running failed: Instrumentation run failed due to 'java.lang.ClassNotFoundException'
Empty test suite.

有人可以帮我识别测试代码中的问题吗？

Answer 1

你是如何运行测试的？

如果您是从Android Studio执行此操作：

打开运行菜单 - ＆gt;编辑配置
添加新的Android测试配置
选择一个模块
添加特定的仪表运行器：

android.support.test.runner.AndroidJUnitRunner

从命令行到Gradle：

./gradlew connectedAndroidTest

Answer 2

我解决了这个问题。这是由于包名称的不同。我将所有包名统一设置并再次运行。有用。谢谢大家的帮助。

Android问题与AndroidJUnitRunner一起提供＆＃39; java.lang.ClassNotFoundException＆＃39;

2 个答案: