仍然没有错误 Android Studio 说“没有找到测试" [英] No error still Android Studio says "no tests were found"

问题描述

我正在尝试为我的 MainActivity 编写检测测试.我按照here给出的答案.仍然 Android Studio 找不到任何测试.我在 androidTest 文件夹中有 ApplicationTest.java 类.以下是课程内容:

I am trying to write an instrumentation test for my MainActivity. I followed the answers given here. Still Android Studio cannot find any tests. I have the class ApplicationTest.java in the androidTest folder. Here's the contents of the class:

package com.example.monicamarcus.mymusicplayer

import android.app.Activity;
import android.test.ActivityInstrumentationTestCase2;
import com.example.monicamarcus.mymusicplayer.MainActivity;

public class ApplicationTest extends ActivityInstrumentationTestCase2<MainActivity> { 
    public ApplicationTest() {
        super(MainActivity.class);
    }

    public void testNextTrackButton() throws Exception {
        Activity activity = getActivity();

        Button nextButton = (Button) activity.findViewById(R.id.nextTrackBt);
        activity.runOnUiThread(new Runnable() {
            @Override
            public void run() {
                nextButton.performClick();
                assertTrue(currentPosition < songList.size());
            }});
        activity.finish();
    }
}

这个测试类有什么问题?还是通过测试?我没有收到任何错误，只是没有找到任何要运行的测试.在我运行 ApplicationTest 后，输出以以下几行结束:

What is wrong with this test class? Or with the tests? I don't get any error, it just does not find any test to run. After I run the ApplicationTest the output ends with the following lines:

Running tests
Test running startedFinish
Empty test suite.

这是应用程序的 build.gradle 文件:

Here's the build.gradle file for the app:

apply plugin: 'com.android.application'

android {
    compileSdkVersion 23
    buildToolsVersion "23.0.2"

    defaultConfig {
        applicationId "com.example.monicamarcus.mymusicplayer"
        minSdkVersion 16
        targetSdkVersion 23
        versionCode 1
        versionName "1.0"
        testApplicationId "app.src.androidTest.java.com.example.monicamarcus.mymusicplayer"
        testInstrumentationRunner "android.test.InstrumentationTestRunner"
    }
    buildTypes {
        debug {
            minifyEnabled false
        }
        release {
            minifyEnabled true
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }
}

android {
    useLibrary 'org.apache.http.legacy'
}

android {

    sourceSets {

        androidTest {
            java.srcDirs = ['androidTest/java']
        }

    }
}

dependencies {
    compile fileTree(dir: 'libs', include: ['*.jar'])
    testCompile 'junit:junit:4.12'
    compile 'com.android.support:appcompat-v7:23.1.1'
    androidTestCompile 'junit:junit:4.12'
}

这是测试运行的输出:

Testing started at 1:56 PM ...
Target device: gt_i8190n-4790068ee9a750c6
Installing APK: /Users/monicamarcus/AndroidStudioProjects/MyMusicPlayer/app/build/outputs/apk/app-debug.apk
Uploading file to: /data/local/tmp/com.example.monicamarcus.mymusicplayer
Installing com.example.monicamarcus.mymusicplayer
DEVICE SHELL COMMAND: pm install -r "/data/local/tmp/com.example.monicamarcus.mymusicplayer"
pkg: /data/local/tmp/com.example.monicamarcus.mymusicplayer
Success


Installing APK: /Users/monicamarcus/AndroidStudioProjects/MyMusicPlayer/app/build/outputs/apk/app-debug-androidTest-unaligned.apk
Uploading file to: /data/local/tmp/app.src.androidTest.java.com.example.monicamarcus.mymusicplayer
Installing app.src.androidTest.java.com.example.monicamarcus.mymusicplayer
DEVICE SHELL COMMAND: pm install -r "/data/local/tmp/app.src.androidTest.java.com.example.monicamarcus.mymusicplayer"
pkg: /data/local/tmp/app.src.androidTest.java.com.example.monicamarcus.mymusicplayer
Success


Running tests
Test running startedFinish
Empty test suite.

在我进行了一些更改后(如果有人感兴趣，我可以发布它们)，运行仪器测试类的结果如下:运行测试.测试运行开始.测试运行失败:没有测试结果.空的测试套件."没有人有过此类测试的经验吗?

After I made some changes (I can publish them if anybody is interested) the result of running the instrumentation test class read as follows: "Running tests. Test running started. Test running failed: No test results. Empty test suite." Nobody has experience with these kind of tests?

推荐答案

在 build.gradle 中，testApplicationId 看起来很奇怪.我会删除它和 testInstrumentationRunner.默认值应该没问题.具体来说，如果您不指定 testApplicationId，它将通过将 ".test" 附加到您的 applicationId 来创建.

In build.gradle, testApplicationId looks very strange. I would remove this and testInstrumentationRunner. The default values should be fine. Specifically, if you do not specify testApplicationId, it will be created by appending ".test" to your applicationId.

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