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Android Studio：3.6.1 Gradle：gradle-5.6.4-all

我已准备好测试我的应用程序，发现 Android Studio 会生成示例单元和仪器测试。所以，我右键单击ExampleUnitTest，选择运行，它运行得很好。但是，当我为ExampleInstrumentedTest执行此操作时，它会失败并显示以下错误消息：

进程完成，退出代码 1 未找到类：“com.example.jbiss.petminder.ExampleInstrumentedTest”

但是，ExampleInstrumentedTest位于默认的androidTest路径 ( ...\app\src\androidTest\java\com\example\jbiss\petminder )，而ExampleUnitTest位于默认的测试路径 ( ...\app\src\test \java\com\example\jbiss\petminder）。

虽然我更改了自动生成的 Android Studio 源代码以开始试验测试编码，但这应该与Class not found: "com.example.jbiss.petminder.ExampleInstrumentedTest"错误无关。这是我修改后的代码（使用自动生成的ExampleInstrumentedTest代码作为基线）：

package com.example.jbiss.petminder;

import android.content.Context;

import com.example.jbiss.petminder.activities.MainActivity;

import androidx.test.espresso.accessibility.AccessibilityChecks;
import androidx.test.filters.SmallTest;
import androidx.test.platform.app.InstrumentationRegistry;
import androidx.test.ext.junit.runners.AndroidJUnit4;
import androidx.test.rule.ActivityTestRule;

import org.junit.Before;
import org.junit.Rule;
import org.junit.Test;
import org.junit.runner.RunWith;

import static androidx.test.espresso.Espresso.onView;
import static androidx.test.espresso.action.ViewActions.click;
import static androidx.test.espresso.assertion.ViewAssertions.matches;
import static androidx.test.espresso.matcher.ViewMatchers.withContentDescription;
import static androidx.test.espresso.matcher.ViewMatchers.withId;
import static org.junit.Assert.*;

/**
* Instrumentation test, which will execute on an Android device.
*
* @see <a href="http://d.android.com/tools/testing">Testing documentation</a>
*/
@RunWith(AndroidJUnit4.class)
@SmallTest
public class ExampleInstrumentedTest {

@Before
public void setUp(){
AccessibilityChecks.enable();
}

@Rule
public ActivityTestRule<MainActivity> mMainActivityActivityTestRule =
new ActivityTestRule<>(MainActivity.class);

@Test
public void useAppContext() throws Exception {
// Context of the app under test.
Context appContext = InstrumentationRegistry.getInstrumentation().getTargetContext();

assertEquals("com.example.jbiss.petminder", appContext.getPackageName());
onView(withId(R.id.action_add_pet)).perform(click()).check(matches(withContentDescription(R.layout.activity_add_pet)));
}
}

这是我的应用程序的 build.gradle 文件：

apply plugin: 'com.android.application'

android {
compileSdkVersion 28
packagingOptions {
exclude 'META-INF/DEPENDENCIES'
}
buildToolsVersion '28.0.3'
defaultConfig {
applicationId "com.example.jbiss.petminder"
minSdkVersion 24
targetSdkVersion 28
versionCode 1
versionName "1.0"
testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
}
}

compileOptions {
encoding "UTF-8"
sourceCompatibility JavaVersion.VERSION_1_8
targetCompatibility JavaVersion.VERSION_1_8
}

dataBinding {
enabled = true
}

// Gradle automatically adds 'android.test.runner' as a dependency.
useLibrary 'android.test.runner'

useLibrary 'android.test.base'
useLibrary 'android.test.mock'

testOptions {
unitTests.includeAndroidResources = true
}
}

dependencies {
def nav_version = "2.3.0-alpha03"

implementation "android.arch.navigation:navigation-fragment-ktx:1.0.0"
implementation "android.arch.navigation:navigation-ui-ktx:1.0.0"

// Java language implementation: navigation
implementation "androidx.navigation:navigation-fragment:$nav_version"
implementation "androidx.navigation:navigation-ui:$nav_version"

// Dynamic Feature Module Support
implementation "androidx.navigation:navigation-dynamic-features-fragment:$nav_version"

// Testing Navigation
androidTestImplementation "androidx.navigation:navigation-testing:$nav_version"

// use -ktx for Kotlin
implementation "android.arch.navigation:navigation-ui:$nav_version"

// use -ktx for Kotlin

//noinspection GradleCompatible
implementation 'com.android.support:support-v4:28.1.0'
implementation
implementation fileTree(include: ['*.jar'], dir: 'libs')
implementation 'com.android.support:appcompat-v7:28.1.0'
implementation 'androidx.constraintlayout:constraintlayout:1.1.3'
implementation 'com.android.support:design:28.1.0'
implementation 'com.android.support:cardview-v7:28.1.0'
implementation 'androidx.recyclerview:recyclerview:1.1.0'
implementation 'com.google.android.material:material:1.1.0'
implementation 'com.android.support:mediarouter-v7:28.1.0'

/**
* directly from https://developer.android.com/topic/libraries/architecture/adding-components#lifecycle
*/
def lifecycle_version = "2.2.0"
def arch_version = "2.1.0"
def room_version = "2.2.4"

// ViewModel
implementation "androidx.lifecycle:lifecycle-viewmodel:$lifecycle_version"
// LiveData
implementation "androidx.lifecycle:lifecycle-livedata:$lifecycle_version"
// Lifecycles only (without ViewModel or LiveData)
implementation "androidx.lifecycle:lifecycle-runtime:$lifecycle_version"

// Saved state module for ViewModel
implementation "androidx.lifecycle:lifecycle-viewmodel-savedstate:$lifecycle_version"

// Annotation processor
annotationProcessor "androidx.lifecycle:lifecycle-compiler:$lifecycle_version"
// alternately - if using Java8, use the following instead of lifecycle-compiler
implementation "androidx.lifecycle:lifecycle-common-java8:$lifecycle_version"

// optional - helpers for implementing LifecycleOwner in a Service
implementation "androidx.lifecycle:lifecycle-service:$lifecycle_version"

// optional - ProcessLifecycleOwner provides a lifecycle for the whole application process
implementation "androidx.lifecycle:lifecycle-process:$lifecycle_version"

// optional - ReactiveStreams support for LiveData
implementation "androidx.lifecycle:lifecycle-reactivestreams:$lifecycle_version"

// optional - Test helpers for LiveData
testImplementation "androidx.arch.core:core-testing:$arch_version"

implementation "androidx.lifecycle:lifecycle-reactivestreams:$lifecycle_version"

// optional - Test helpers for LiveData
testImplementation "androidx.arch.core:core-testing:$arch_version"
implementation "androidx.room:room-runtime:$room_version"
annotationProcessor "androidx.room:room-compiler:$room_version"

// use kapt for Kotlin

// optional - RxJava support for Room

//implementation "androidx.room:room-rxjava2:$room_version"

// optional - Guava support for Room, including Optional and ListenableFuture

//implementation "androidx.room:room-guava:$room_version"

// Test helpers
testImplementation "androidx.room:room-testing:$room_version"
testImplementation 'org.testng:testng:6.9.10'

// Required -- JUnit 4 framework
testImplementation 'junit:junit:4.12'
// Optional -- Robolectric environment
testImplementation 'androidx.test:core:1.2.0'
// Optional -- Mockito framework
testImplementation 'org.mockito:mockito-core:2.19.0'
implementation 'androidx.appcompat:appcompat:1.1.0'

implementation 'com.google.api-client:google-api-client:1.30.2'

// Core library
androidTestImplementation 'androidx.test:core:1.2.0'

// AndroidJUnitRunner and JUnit Rules
androidTestImplementation 'androidx.test:runner:1.2.0'
androidTestImplementation 'androidx.test:rules:1.2.0'

// Assertions
androidTestImplementation 'androidx.test.ext:junit:1.1.1'
androidTestImplementation 'androidx.test.ext:truth:1.2.0'
androidTestImplementation 'com.google.truth:truth:0.42'

// Espresso dependencies
androidTestImplementation 'androidx.test.espresso:espresso-core:3.2.0'
androidTestImplementation 'androidx.test.espresso:espresso-contrib:3.2.0'
androidTestImplementation 'androidx.test.espresso:espresso-intents:3.2.0'
androidTestImplementation 'androidx.test.espresso:espresso-accessibility:3.2.0'
androidTestImplementation 'androidx.test.espresso:espresso-web:3.2.0'
androidTestImplementation 'androidx.test.espresso.idling:idling-concurrent:3.2.0'

// The following Espresso dependency can be either "implementation"
// or "androidTestImplementation", depending on whether you want the
// dependency to appear on your APK's compile classpath or the test APK
// classpath.
androidTestImplementation 'androidx.test.espresso:espresso-idling-resource:3.2.0'
// debugImplementation because LeakCanary should only run in debug builds.
debugImplementation 'com.squareup.leakcanary:leakcanary-android:2.2'
// Optional -- Hamcrest library
androidTestImplementation 'org.hamcrest:hamcrest-library:1.3'
// Optional -- UI testing with UI Automator
androidTestImplementation 'androidx.test.uiautomator:uiautomator:2.2.0'

}

configurations.all {
resolutionStrategy.eachDependency { DependencyResolveDetails details ->
def requested = details.requested
if (requested.group == 'com.android.support') {
//if (requested.group == "androidx") {
if (!requested.name.startsWith("multidex")) {
details.useVersion '25.3.1'
}
}
}
}

虽然我的代码中可能存在其他问题，但什么会导致无法找到该文件中明确说明的现有ExampleInstrumentedTest文件？public class ExampleInstrumentedTest{}

代码的格式似乎如构建检测单元测试中所示

以下没有提供答案：

4

3 回答 3

2

不建议在androidx.testand android.support.test/之间混用。android.test更改testInstrumentationRunner为以下可以解决问题：

testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"

这是一个您可以参考用作主要测试框架的示例。androidx.test

于 2020-03-13T23:41:02.003 回答
1

好的。从我的讨论 ahasbini 中，我发现我可能遇到了一些 gradle 问题。因此，我对 build.gradle 文件进行了以下更改：

从：

// Assertions
androidTestImplementation 'androidx.test.ext:truth:1.2.0'
androidTestImplementation 'com.google.truth:truth:0.42'

至：

// Assertions
androidTestImplementation 'androidx.test.ext:junit:1.1.1'
androidTestImplementation 'androidx.test.ext:truth:1.1.1'{
    exclude group: "com.google.truth", module: "truth"
}
androidTestImplementation 'com.google.truth:truth:0.44'{
   exclude group: "org.checkerframework", module: "checker-compat-qual"
   exclude group: "com.google.errorprone", module: "error_prone_annotations"
}

现在我收到以下错误：

  • 出了什么问题：评估项目“：app”时出现问题。

    在 org.gradle.api.internal.artifacts.dsl.dependencies.DefaultDependencyHandler 类型的对象上找不到参数 [build_ezdi8oaa9gsnmfo7o2e18xyfx$_run_closure2$_closure11@6b8f394a] 的方法 androidx.test.ext:truth:1.1.1()。

因此，这似乎是 developer.android.com 中的文档存在问题，因为我按照其页面上的指示来开发我的测试代码，而Gradle 依赖项告诉我使用以下内容：

// Assertions
androidTestImplementation 'androidx.test.ext:junit:1.0.0'
androidTestImplementation 'androidx.test.ext:truth:1.0.0'
androidTestImplementation 'com.google.truth:truth:0.42'

此代码导致“未找到”错误。但是，仍然存在一个问题，因为没有告诉任何人使用 { exclude...} 东西，也没有告诉任何人使用什么版本的 androidx.test.ext:truth 来获取官方文档中的功能代码。请注意，我使用 1.1.1 版本，因为 Android Studio 中的 Gradle 告诉 androidx.test.ext:junit 有一个“可用的更新版本”。

注意：首先，我的 Instrumented Test 代码使用 NO Truth 方法，所以为什么会发生这种情况是没有意义的。其次，我在搜索当前版本时发现了 Truth.dev，并尝试使用他们在“如何使用 Truth：Gradle”中所说的内容，但由于“未找到...”错误而失败。

于 2020-03-18T14:00:58.740 回答
0

好的。我找到了解决这个问题的方法。我创建了一个新的检测测试文件并将原始问题文件的内容复制到其中并更改了类名。它跑了。我删除了原始文件。

于 2020-06-20T14:08:19.137 回答