java – Kotlin androidTest：测试跑完了.空的测试套件

2023年1月4日 203次阅读

我正在尝试将我的测试从
java转换为kotlin.

简单的单元测试已成功翻译,如下所示：

class BindingUtilsTest {
  @Test @Throws(Exception::class)
  fun testConvertBooleanToVisibility_visible() {
    assertEquals(BindingUtils.convertBooleanToVisibility(true), View.VISIBLE)
  }
}

但是当我试图运行androidTest时,它失败并显示消息：“没有找到测试”和

Test running started
Tests ran to completion.

Empty test suite.

代码工作得很好,在java时.相关代码：

build.gradle部分：

apply plugin: "com.android.application"
apply plugin: "com.neenbedankt.android-apt"

// for tests
apply plugin: 'kotlin-android'


// defaultConfig
testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"

sourceSets {
    test.java.srcDirs += 'src/test/kotlin' // tests are there
    androidTest.java.srcDirs += 'src/androidTest/kotlin' // and there
}

// unit tests
testApt "com.google.dagger:dagger-compiler:${daggerVer}"

// kotlin
testCompile "org.jetbrains.kotlin:kotlin-stdlib:${kotlinVer}"
testCompile "org.jetbrains.kotlin:kotlin-test-junit:${kotlinVer}"

// android tests

androidTestApt "com.google.dagger:dagger-compiler:${daggerVer}"

// kotlin
androidTestCompile "org.jetbrains.kotlin:kotlin-stdlib:${kotlinVer}"
androidTestCompile "org.jetbrains.kotlin:kotlin-test-junit:${kotlinVer}"

简单测试：

@RunWith(AndroidJUnit4::class) class MainDrawerActivityTest {

  private val mQuestions = InstrumentationRegistry.getTargetContext().applicationContext as Questions

  private val mTestComponentRule = TestComponentRule<Questions, AppComponentTest>(mQuestions,
      DaggerAppComponentTest.builder().appModuleTest(AppModuleTest(mQuestions)).build(),
      { obj, component -> obj.setAppComponent(component) }, // set test component
      { objectToClear -> objectToClear.setAppComponent(null) }) // clear test component

  private val mActivityTestRule = ActivityTestRule(
      MainDrawerActivity::class.java, false, false)

  // TestComponentRule needs to go first to make sure the Dagger TestComponent is set
  // in the Application before any Activity is launched.
  @Rule @JvmField val mRuleChain: TestRule = RuleChain.outerRule(mTestComponentRule).around(mActivityTestRule)

  private var mActivity: MainDrawerActivity? = null

  @Before @Throws(Exception::class)
  fun setUp() {
    mActivityTestRule.launchActivity(null)

    mActivity = mActivityTestRule.activity
  }

  @Test @Throws(Exception::class)
  fun testOnCreate() {

    val size = mActivity!!.supportFragmentManager.fragments.size

    // check if fragment instantly added
    assertEquals(size.toLong(), 1)
  }
}

测试组件在Kotlin中：

// Empty because extends ApplicationComponent
@Singleton @Component(modules = arrayOf(
    AppModuleTest::class)) interface AppComponentTest : AppComponent

测试模块也在Kotlin中：

@Module class AppModuleTest(private val mApp: Questions) /*: AppModule*/ {
  @Provides fun provideApp(): Questions {
    return mApp
  }
}

我甚至没有看到,DaggerAppComponentTest是构建的.

为什么我使用apt代替kapt进行测试？

因为我有一个错误,我不能混合apt和kapt在一个项目中.我试图切换到kapt,并得到了数十亿的错误.

据我所知,kapt处理kotlin文件并使用它们人们生成kotlin代码？而对于apt：java文件,java代码.怎么混合呢？如何解决这个问题呢？

解

接受的解决方案有效.在此之前,我为Kotlin回归了kapt.用kaptAndroidTest和kaptTest.

最佳答案 更改

@Rule @JvmField val mRuleChain: TestRule = RuleChain.outerRule(mTestComponentRule).around(mActivityTestRule)

至

@get:Rule @JvmField var mRuleChain: TestRule = RuleChain.outerRule(mTestComponentRule).around(mActivityTestRule)

如果它不起作用,则表示mRuleChain为null,检查Dagger提供的对象.

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