我已经浏览了堆栈上发现的类似问题的所有问题，但没有一个给我实际有效的答案( https://stackoverflow.com/search?q=espresso+empty+test+suite )。
我有一个简单的项目，我想尝试 Espresso 。我的类文件如下所示:
package com.example.myapplication;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;
public class FirstActivity extends Activity implements View.OnClickListener {
Button mClickMeButton;
TextView mHelloWorldTextView;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_my);
setupView();
}
private void setupView() {
mHelloWorldTextView = (TextView) findViewById(R.id.helloWorldTextView);
mHelloWorldTextView.setText(getTitleText());
mClickMeButton = (Button) findViewById(R.id.clickMeBtn);
mClickMeButton.setOnClickListener(this);
}
private String getTitleText() {
return "First Activity";
}
@Override
public void onClick(View v) {
Intent intent = new Intent(this, SecondActivity.class);
startActivity(intent);
}
}
我的测试文件如下所示:
package com.example.myapplication.test;
import android.graphics.Bitmap;
import android.test.ActivityInstrumentationTestCase2;
import android.test.suitebuilder.annotation.LargeTest;
import android.test.suitebuilder.annotation.SmallTest;
import static android.support.test.espresso.Espresso.onView;
import static android.support.test.espresso.matcher.ViewMatchers.isDisplayed;
import static android.support.test.espresso.matcher.ViewMatchers.withText;
import com.example.myapplication.BuildConfig;
import com.example.myapplication.FirstActivity;
@RunWith(AndroidJUnit4.class)
@SmallTest
public class FirstActivityTest extends ActivityInstrumentationTestCase2<FirstActivity> {
public FirstActivityTest() {
super(FirstActivity.class);
}
@Override
public void setUp() throws Exception {
super.setUp();
getActivity();
}
@Test
public void testListGoesOverTheFold() {
onView(withText("First Activity")).check(matches(isDisplayed()));
}
}
和 build.gradle 像这样:
apply plugin: 'com.android.application'
apply plugin: 'jacoco'
apply plugin: "sonar-runner"
apply plugin: 'spoon'
android {
compileSdkVersion 21
buildToolsVersion '22.0.1'
packagingOptions {
exclude 'LICENSE.txt'
}
defaultConfig {
applicationId "com.example.myapplication"
minSdkVersion 14
targetSdkVersion 21
versionCode 1
versionName "1.0"
testApplicationId "com.example.myapplication.test"
testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
}
buildTypes {
debug {
testCoverageEnabled true
}
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
}
}
dependencies {
testCompile 'org.easytesting:fest:1.0.16'
testCompile 'junit:junit:4.12'
testCompile 'org.robolectric:robolectric:2.4'
testCompile 'com.squareup:fest-android:1.0.8'
androidTestCompile 'com.squareup.spoon:spoon-client:1.1.9'
androidTestCompile 'com.android.support.test:runner:0.2'
androidTestCompile 'com.android.support.test:rules:0.2'
androidTestCompile('com.android.support.test.espresso:espresso-core:2.1') {
exclude group: 'javax.inject'
}
}
spoon {
debug = true
//devices = ['333236E9AE5800EC']
if (project.hasProperty('spoonClassName')){
className = project.spoonClassName
}
}
}
def coverageSourceDirs = [
'../app/src/main/java', 'src/gen'
]
task jacocoTestReport(type: JacocoReport, dependsOn: "testDebug") {
group = "Reporting"
description = "Generate Jacoco coverage reports after running tests."
reports {
xml.enabled = true
html.enabled = true
}
classDirectories = fileTree(
dir: './build/intermediates/classes/debug',
excludes: ['**/R.class',
'**/R$*.class'
])
sourceDirectories = files(coverageSourceDirs)
executionData = files('build/jacoco/testDebug.exec')
}
}
每次我尝试运行它时，我都会得到:
Testing started at 16:57 ...
Target device: genymotion-google_nexus_5___5_0_0___api_21___1080x1920-192.168.56.101:5555
Uploading file
local path: /Users/pernillauhlin/development/pingdom/android-robolectric-test/app/build/outputs/apk/app-debug.apk
remote path: /data/local/tmp/com.example.myapplication
No apk changes detected. Skipping file upload, force stopping package instead.
DEVICE SHELL COMMAND: am force-stop com.example.myapplication
Uploading file
local path: /Users/pernillauhlin/development/pingdom/android-robolectric-test/app/build/outputs/apk/app-debug-androidTest-unaligned.apk
remote path: /data/local/tmp/com.example.myapplication.test
No apk changes detected. Skipping file upload, force stopping package instead.
DEVICE SHELL COMMAND: am force-stop com.example.myapplication.test
Running tests
Test running startedTest running failed: Unable to find instrumentation info for: ComponentInfo{com.example.myapplication.test/android.test.InstrumentationTestRunner}
Empty test suite.
我的结构是:
此外，从命令运行 Spoon 会得到相同的结果。所以，我的问题是:
- 我错过了什么？
- 测试的注释；我见过很多变化，比如类里面的、测试前的等等。正确的方法是什么？或者您可以在类之前指定 @LargeTest 并在实际测试方法之前指定 @SmallTest 吗？
编辑:
我的运行配置如下所示:
看起来 android.support.test.runner.AndroidJUnitRunner 不存在。
构建变体:
最佳答案
我通过在测试配置中设置错误 android.test.InstrumentationTestRunner 成功地重现了您的情况。
我建议检查您是否在运行菜单 | 中指定了正确的 -android.support.test.runner.AndroidJUnitRunner-(或没有)。编辑配置。
另外，你的问题的标题有点令人困惑，因为从构建 gradle 依赖关系来看，我的理解是你实际上要使用 Espresso 2.1。如果这是真的，还请注意:
TestCases like ActivityInstrumentationTestCase2 or ServiceTestCase are deprecated in favor of ActivityTestRule or ServiceTestRule.
也可以看出here或here ，注释将按以下方式使用:(将调整您已弃用的测试类，只是因为我很好)
//annotate JUnit4 test classes with
@RunWith(AndroidJunit4.class)
@LargeTest
public class FirstActivityTest {
//use the following annotation and declare an ActivityTestRule for your activity under test
@Rule
public ActivityTestRule<FirstActivity> mActivityRule = new ActivityTestRule(FirstActivity.class);
//use @Before to setup your test fixture
@Before
public void setUp() { ... }
//annotate all test methods with
@Test
public void testHelloWorld() { ... }
//release resources by using
@After
public void tearDown() { ... }
}
更多关于Rules
其他了解更多信息的好地方 test size annotations
关于android - Espresso 2.1 找不到我的测试，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/30127135/