我尝试通过“gradlew connectedAndroidTest”运行检测测试。我收到以下错误：
Tests on GT-I9305 - 4.3 failed: Instrumentation run failed due to 'java.lang.ClassNotFoundException'
com.android.builder.testing.ConnectedDevice > hasTests[GT-I9305 - 4.3] FAILED
No tests found.
:mobile:connectedAndroidTest FAILED
这是带有--stacktrace选项的输出：
org.gradle.api.tasks.TaskExecutionException: Execution failed for task ':mobile:connectedAndroidTest'.
at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeActions(ExecuteActionsTaskExecuter.java:69)
at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.execute(ExecuteActionsTaskExecuter.java:46)
at org.gradle.api.internal.tasks.execution.PostExecutionAnalysisTaskExecuter.execute(PostExecutionAnalysisTaskExecuter.java:35)
at org.gradle.api.internal.tasks.execution.SkipUpToDateTaskExecuter.execute(SkipUpToDateTaskExecuter.java:64)
at org.gradle.api.internal.tasks.execution.ValidatingTaskExecuter.execute(ValidatingTaskExecuter.java:58)
at org.gradle.api.internal.tasks.execution.SkipEmptySourceFilesTaskExecuter.execute(SkipEmptySourceFilesTaskExecuter.java:42)
at org.gradle.api.internal.tasks.execution.SkipTaskWithNoActionsExecuter.execute(SkipTaskWithNoActionsExecuter.java:52)
at org.gradle.api.internal.tasks.execution.SkipOnlyIfTaskExecuter.execute(SkipOnlyIfTaskExecuter.java:53)
at org.gradle.api.internal.tasks.execution.ExecuteAtMostOnceTaskExecuter.execute(ExecuteAtMostOnceTaskExecuter.java:43)
at org.gradle.api.internal.AbstractTask.executeWithoutThrowingTaskFailure(AbstractTask.java:305)
at org.gradle.execution.taskgraph.AbstractTaskPlanExecutor$TaskExecutorWorker.executeTask(AbstractTaskPlanExecutor.java:79)
at org.gradle.execution.taskgraph.AbstractTaskPlanExecutor$TaskExecutorWorker.processTask(AbstractTaskPlanExecutor.java:63)
at org.gradle.execution.taskgraph.AbstractTaskPlanExecutor$TaskExecutorWorker.run(AbstractTaskPlanExecutor.java:51)
at org.gradle.execution.taskgraph.DefaultTaskPlanExecutor.process(DefaultTaskPlanExecutor.java:23)
at org.gradle.execution.taskgraph.DefaultTaskGraphExecuter.execute(DefaultTaskGraphExecuter.java:88)
at org.gradle.execution.SelectedTaskExecutionAction.execute(SelectedTaskExecutionAction.java:29)
at org.gradle.execution.DefaultBuildExecuter.execute(DefaultBuildExecuter.java:62)
at org.gradle.execution.DefaultBuildExecuter.access$200(DefaultBuildExecuter.java:23)
at org.gradle.execution.DefaultBuildExecuter$2.proceed(DefaultBuildExecuter.java:68)
at org.gradle.execution.DryRunBuildExecutionAction.execute(DryRunBuildExecutionAction.java:32)
at org.gradle.execution.DefaultBuildExecuter.execute(DefaultBuildExecuter.java:62)
at org.gradle.execution.DefaultBuildExecuter.execute(DefaultBuildExecuter.java:55)
at org.gradle.initialization.DefaultGradleLauncher.doBuildStages(DefaultGradleLauncher.java:149)
at org.gradle.initialization.DefaultGradleLauncher.doBuild(DefaultGradleLauncher.java:106)
at org.gradle.initialization.DefaultGradleLauncher.run(DefaultGradleLauncher.java:86)
at org.gradle.launcher.exec.InProcessBuildActionExecuter$DefaultBuildController.run(InProcessBuildActionExecuter.java:80)
at org.gradle.launcher.cli.ExecuteBuildAction.run(ExecuteBuildAction.java:33)
at org.gradle.launcher.cli.ExecuteBuildAction.run(ExecuteBuildAction.java:24)
at org.gradle.launcher.exec.InProcessBuildActionExecuter.execute(InProcessBuildActionExecuter.java:36)
at org.gradle.launcher.exec.InProcessBuildActionExecuter.execute(InProcessBuildActionExecuter.java:26)
at org.gradle.launcher.cli.RunBuildAction.run(RunBuildAction.java:51)
at org.gradle.internal.Actions$RunnableActionAdapter.execute(Actions.java:171)
at org.gradle.launcher.cli.CommandLineActionFactory$ParseAndBuildAction.execute(CommandLineActionFactory.java:237)
at org.gradle.launcher.cli.CommandLineActionFactory$ParseAndBuildAction.execute(CommandLineActionFactory.java:210)
at org.gradle.launcher.cli.JavaRuntimeValidationAction.execute(JavaRuntimeValidationAction.java:35)
at org.gradle.launcher.cli.JavaRuntimeValidationAction.execute(JavaRuntimeValidationAction.java:24)
at org.gradle.launcher.cli.CommandLineActionFactory$WithLogging.execute(CommandLineActionFactory.java:206)
at org.gradle.launcher.cli.CommandLineActionFactory$WithLogging.execute(CommandLineActionFactory.java:169)
at org.gradle.launcher.cli.ExceptionReportingAction.execute(ExceptionReportingAction.java:33)
at org.gradle.launcher.cli.ExceptionReportingAction.execute(ExceptionReportingAction.java:22)
at org.gradle.launcher.Main.doAction(Main.java:33)
at org.gradle.launcher.bootstrap.EntryPoint.run(EntryPoint.java:45)
at org.gradle.launcher.bootstrap.ProcessBootstrap.runNoExit(ProcessBootstrap.java:54)
at org.gradle.launcher.bootstrap.ProcessBootstrap.run(ProcessBootstrap.java:35)
at org.gradle.launcher.GradleMain.main(GradleMain.java:23)
at org.gradle.wrapper.BootstrapMainStarter.start(BootstrapMainStarter.java:33)
at org.gradle.wrapper.WrapperExecutor.execute(WrapperExecutor.java:130)
at org.gradle.wrapper.GradleWrapperMain.main(GradleWrapperMain.java:48)
Caused by: org.gradle.api.GradleException: There were failing tests. See the report at: file:///D:/myapp/mobile/build/outputs/reports/androidTests/connected/index.html
at com.android.build.gradle.internal.tasks.DeviceProviderInstrumentTestTask.runTests(DeviceProviderInstrumentTestTask.groovy:92)
at org.gradle.internal.reflect.JavaMethod.invoke(JavaMethod.java:63)
at org.gradle.api.internal.project.taskfactory.AnnotationProcessingTaskFactory$StandardTaskAction.doExecute(AnnotationProcessingTaskFactory.java:218)
at org.gradle.api.internal.project.taskfactory.AnnotationProcessingTaskFactory$StandardTaskAction.execute(AnnotationProcessingTaskFactory.java:211)
at org.gradle.api.internal.project.taskfactory.AnnotationProcessingTaskFactory$StandardTaskAction.execute(AnnotationProcessingTaskFactory.java:200)
at org.gradle.api.internal.AbstractTask$TaskActionWrapper.execute(AbstractTask.java:579)
at org.gradle.api.internal.AbstractTask$TaskActionWrapper.execute(AbstractTask.java:562)
at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeAction(ExecuteActionsTaskExecuter.java:80)
at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeActions(ExecuteActionsTaskExecuter.java:61)
... 47 more
我的 AndroidManifest.xml ：
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.myapp" >
<instrumentation
android:targetPackage="com.example.myapp"
android:name="android.test.InstrumentationTestRunner" />
<application
android:allowBackup="true"
android:icon="@drawable/ic_launcher"
android:label="@string/app_name"
android:theme="@style/AppTheme"
android:name="com.example.myapp.MyApplication">
<activity
android:name="com.example.myapp.MainActivity"
android:label="@string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<uses-library android:name="android.test.runner" />
</application>
</manifest>
我的 build.gradle ：
apply plugin: 'com.android.application'
apply plugin: 'com.neenbedankt.android-apt'
apply plugin: 'robolectric'
android {
compileSdkVersion 21
buildToolsVersion "20.0.0"
defaultConfig {
applicationId "com.example.myapp"
minSdkVersion 18
targetSdkVersion 21
versionCode 1
versionName "1.0"
testInstrumentationRunner "com.google.android.apps.common.testing.testrunner.GoogleInstrumentationTestRunner"
}
buildTypes {
release {
runProguard false
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
}
}
sourceSets {
androidTest {
setRoot('src/androidTest')
}
test {
setRoot('src/test')
}
}
}
android {
packagingOptions {
exclude 'META-INF/LICENSE.txt'
exclude 'LICENSE.txt'
exclude 'META-INF/LICENSE'
exclude 'META-INF/NOTICE'
}
}
configurations {
apt
}
apt {
arguments {
resourcePackageName android.defaultConfig.packageName
androidManifestFile variant.outputs[0].processResources.manifestFile
}
}
ext {
daggerVersion = '1.2.2';
androidAnnotationsVersion = '3.2';
robobindingVersion = '0.8.9';
jodatimeVersion = '2.5.1';
ormliteVersion = '4.48';
ottoVersion = '1.3.5';
commonsioVersion = '2.0.1';
playservicesVersion = '6.1.71';
supportv4Version = '21.0.2';
javaxinjectVersion = '1';
junitVersion = '4.11';
robolectricVersion = '2.4';
}
dependencies {
androidTestCompile files('lib/espresso-1.1.jar', 'lib/testrunner-1.1.jar', 'lib/testrunner-runtime-1.1.jar')
androidTestCompile 'com.google.guava:guava:14.0.1'
androidTestCompile 'com.squareup.dagger:dagger:1.2.2'
androidTestCompile 'org.hamcrest:hamcrest-integration:1.1'
androidTestCompile 'org.hamcrest:hamcrest-core:1.1'
androidTestCompile 'org.hamcrest:hamcrest-library:1.1'
androidTestCompile("junit:junit:${junitVersion}") {
exclude module: 'hamcrest-core'
}
androidTestCompile("org.robolectric:robolectric:${robolectricVersion}") {
exclude module: 'classworlds'
exclude module: 'commons-logging'
exclude module: 'httpclient'
exclude module: 'maven-artifact'
exclude module: 'maven-artifact-manager'
exclude module: 'maven-error-diagnostics'
exclude module: 'maven-model'
exclude module: 'maven-project'
exclude module: 'maven-settings'
exclude module: 'plexus-container-default'
exclude module: 'plexus-interpolation'
exclude module: 'plexus-utils'
exclude module: 'wagon-file'
exclude module: 'wagon-http-lightweight'
exclude module: 'wagon-provider-api'
}
androidTestCompile 'com.squareup:fest-android:1.0.+'
apt "org.robobinding:codegen:$robobindingVersion"
compile("org.robobinding:robobinding:$robobindingVersion:with-dependencies") {
exclude group: 'com.google.guava', module: 'guava'
}
apt "org.androidannotations:androidannotations:${androidAnnotationsVersion}"
compile "org.androidannotations:androidannotations-api:${androidAnnotationsVersion}"
apt "com.squareup.dagger:dagger-compiler:${daggerVersion}"
compile "com.squareup.dagger:dagger:${daggerVersion}"
compile fileTree(dir: 'libs', include: ['*.jar'])
wearApp project(':wear')
compile project(':javamail')
compile "com.google.android.gms:play-services:${playservicesVersion}"
compile "com.android.support:support-v4:${supportv4Version}"
compile "com.squareup:otto:${ottoVersion}"
compile "javax.inject:javax.inject:${javaxinjectVersion}"
compile "com.j256.ormlite:ormlite-core:${ormliteVersion}"
compile "com.j256.ormlite:ormlite-android:${ormliteVersion}"
compile group: 'commons-io', name: 'commons-io', version: "${commonsioVersion}"
compile "net.danlew:android.joda:${jodatimeVersion}"
}
apply plugin: 'idea'
idea {
module {
testOutputDir = file('build/test-classes/debug')
}
}
android.applicationVariants.all { variant ->
def aptOutput = file("${project.buildDir}/generated/source/apt/${variant.dirName}")
println "****************************"
println "variant: ${variant.name}"
println "manifest: ${variant.processResources.manifestFile}"
println "aptOutput: ${aptOutput}"
println "****************************"
variant.javaCompile.doFirst {
println "*** compile doFirst ${variant.name}"
aptOutput.mkdirs()
variant.javaCompile.options.compilerArgs += [
'-processorpath', configurations.apt.getAsPath(),
'-AandroidManifestFile=' + variant.processResources.manifestFile,
'-s', aptOutput
]
}
}
我的测试类：
public class MainActivityTest extends ActivityInstrumentationTestCase2<MainActivity> {
public MainActivityTest() {
super(MainActivity.class);
}
public void testSomething() {
assertTrue(true);
}
}
有什么想法吗？
答案 0 :(得分：21)
我发现自己遇到了同样的问题，并通过更新到espresso 2.0解决了这个问题
替换build.gradle文件中的testInstrumentationRunner
testInstrumentationRunner "com.google.android.apps.common.testing.testrunner.GoogleInstrumentationTestRunner
到
testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
并将新依赖项更新为2.0
androidTestCompile files('lib/espresso-1.1.jar', 'lib/testrunner-1.1.jar', 'lib/testrunner-runtime-1.1.jar')
到
androidTestCompile 'com.android.support.test:testing-support-lib:0.1'
androidTestCompile 'com.android.support.test.espresso:espresso-core:2.0'
您还必须更改测试中的命名空间，但运行它们时会注意到。
完整说明： https://code.google.com/p/android-test-kit/wiki/EspressoSetupInstructions
修改
似乎我太早回答，我发布的答案只修复了5.0设备。以下是在旧设备上修复它的原因：
通过更改：
从新依赖项中排除javax.injectandroidTestCompile 'com.android.support.test.espresso:espresso-core:2.0'
到
androidTestCompile('com.android.support.test.espresso:espresso-core:2.0') {
exclude group: 'javax.inject'
}
源： Dagger code giving NoClassDefFoundError when Espresso Tests are run, normal run works fine
答案 1 :(得分：5)
当我在 Kotlin 中编写测试并在方法名称中使用空格时，我遇到了这个问题。它与错误消息崩溃：
java.lang.ClassNotFoundException: Didn't find class "android.support.test.runner.AndroidJUnitRunner"
在Android Studio中：
No tests where found
破损测试： 方法名称中的空格，不适用于Android
class RandomTest {
@Test
fun `do not use spaces it will not work on Android devices or emulators`() {
assertThat(2 + 2).isEqualTo(4)
}
}
<强>解决方案： 删除空格，一切都正常编译
class RandomTest {
@Test
fun write_method_names_java6_compatible_without_spaces() {
assertThat(2 + 2).isEqualTo(4)
}
}
这可能发生，因为我禁用了检查＆＃34;非法Android标识符＆＃34;所以在编写JVM测试时它并不会让我恼火
答案 2 :(得分：2)
我刚刚在重构后尝试从控制台运行测试时遇到了这个问题。
解决方案是修复AndroidManifest.xml，因为它包含对不再存在的活动和其他类的引用。
当然，项目将使用错误的清单进行编译，但是当您尝试运行它时，设备将找不到已定义的类。因此ClassNotFoundException。
答案 3 :(得分：2)
我遇到过类似的问题。在我的项目中，有多个模块，并启用了multidex。对我来说问题是在一个特定模块中缺少多索启用选项（multiDexEnabled true）。
在主模块（app）中，build.gradle如下所示：
...
multiDexEnabled true
testInstrumentationRunner "com.android.test.runner.MultiDexTestRunner"
...
在另一个模块（应用程序所依赖的模块）中，build.gradle缺少“multiDexEnabled true”行。添加此行可解决此问题。
答案 4 :(得分：2)
从Original Answer复制答案。
这是我在我的项目中注意到的，在我的app（主）模块build.gradle中我有以下buildType配置
buildTypes {
debug {
multiDexEnabled true
}
mock {
initWith(buildTypes.debug)
}
}
testBuildType "mock"
当我在build.gradle中使用 AndroidJUnitRunner 作为测试运行器（均来自Android Studio）和 testInstrumentationRunner 时，测试顺利进行。
在 multiDexEnabled为 defaultConfig
的子模块中defaultConfig {
multiDexEnabled true
....
}
我遇到了
的问题Test running startedTest running failed: Unable to find instrumentation info for:{mypackage.x.y/android.support.test.runner.AndroidJUnitRunner"}
当我在IDE和子模块build.gradle中指定 AndroidJUnitRunner 时。通过在IDE / build.gradle中指定 MultiDexTestRunner 作为测试运行器来解决此问题。
总结一下，使用 MultiDexTestRunner 在build.gradle中指定 multiDexEnabled true 时运行测试，否则使用 AndroidJUnitRunner 作为测试运行器。
答案 5 :(得分：0)
我通过关闭Proguard解决了这个问题。
答案 6 :(得分：0)
对我来说，问题是在Kotlin中添加了测试，但以前没有Kotlin支持。因此，我需要加入gradle：
go build .
go run .
然后删除测试配置，然后再次添加。