使用AndroidX运行检测测试时未找到测试

Question

我正在尝试在我的Android项目（使用AndroidX）中​​运行标准的ExampleInstrumentedTest，但收到“未找到测试”错误。我仔细阅读了其他问题和文档，很确定我做对了所有事情，但是也许我忽略了什么？

这是我的应用程序的build.gradle：

apply plugin: 'com.android.application'
apply plugin: 'kotlin-android'
apply plugin: 'kotlin-kapt'

android {
    compileSdkVersion 28
    defaultConfig {
        minSdkVersion 24
        targetSdkVersion 28
        versionCode 1
        versionName "1.0"
        testInstrumentationRunner "androidx.test.ext.junit.runners.AndroidJUnit4"
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }

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

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

repositories {
    mavenCentral()
    maven {
        url("https://oss.sonatype.org/content/repositories/snapshots")
    }
    maven { url 'https://jitpack.io' }
}


dependencies {
    // Core library
    androidTestImplementation 'androidx.test:core:1.0.0'

    // AndroidJUnitRunner and JUnit Rules
    androidTestImplementation 'androidx.test:runner:1.1.0'
    androidTestImplementation 'androidx.test:rules:1.1.0'

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

    androidTestImplementation 'androidx.test.espresso:espresso-core:3.1.0'
}

// More dependencies...    

和ExampleInstrumentedTest.java：

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

import androidx.test.core.app.ApplicationProvider;
import androidx.test.ext.junit.runners.AndroidJUnit4;

import static org.junit.Assert.*;

@RunWith(AndroidJUnit4.class)
public class ExampleInstrumentedTest {
    @Test
    public void useAppContext() {
        Context appContext = ApplicationProvider.getApplicationContext();
        assertEquals("XXX", appContext.getPackageName());
    }
}

当我运行代码时，出现“未找到测试”。

Answer 1

我已替换-

testInstrumentationRunner "androidx.test.runner.AndroidJUnit4"

with-

testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"

Answer 2

查找app / src / androidTest / AndroidManifest.xml

将android：name更改为androidx.multidex.MultiDexApplication

<application
        android:allowBackup="true"
        android:label="Components Tests App"
        android:supportsRtl="true"
        android:name="android.support.multidex.MultiDexApplication">

收件人

<application
            android:allowBackup="true"
            android:label="Components Tests App"
            android:supportsRtl="true"
            android:name="androidx.multidex.MultiDexApplication">

Answer 3

我需要更换跑步机

"androidx.test.ext.junit.runners.AndroidJUnit4"

with

"androidx.test.runner.AndroidJUnitRunner"