小编Hir*_*el_的帖子

我正在学习使用浓缩咖啡的android仪器测试.我有一个有抽屉菜单的应用程序,有一个叫做关于的菜单.我正在测试点击该菜单项和活动内容.

testfunction:

  @Test
public void testNavigationDrawerAboutMenu() {
    onView(withId(R.id.drawer_layout))
            .perform(DrawerActions.open()); //open drawer
    onView(withText("About")).perform(click());
    onView(withId(R.id.aboutsptemail)).check(matches(withText(R.string.screen_about_support_email)));
    onView(withId(R.id.aboutcpright)).check(matches(isDisplayed()));
    onView(withId(R.id.aboutprivacy)).check(matches(isDisplayed()));
    onView(withId(R.id.abouttermsconditions)).check(matches(isDisplayed()));
    onView(withId(R.id.aboutsptemail)).perform(click());
}

现在最后一个textview中嵌入了weblink.因此,当您点击它时,它会自动在应用程序的Web视图中打开链接(www.support.com).我想测试这个功能.所以我试过这个:

intended(hasComponent(WebViewActivity.class.getName())); //check if webview called on supportEmail link click

但是此错误跟踪测试失败:

java.lang.NullPointerException: Attempt to invoke virtual method 'android.support.test.espresso.intent.OngoingStubbing android.support.test.espresso.intent.Intents.internalIntending(org.hamcrest.Matcher)' on a null object reference
at android.support.test.espresso.intent.Intents.intending(Intents.java:155)
at com.ScanBuy.SmartLabel.NavigationDrawerActivityTests.testNavigationDrawerAboutMenu(NavigationDrawerActivityTests.java:94)
at java.lang.reflect.Method.invoke(Native Method)
at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)
at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
at android.support.test.internal.statement.UiThreadStatement.evaluate(UiThreadStatement.java:55)
at android.support.test.rule.ActivityTestRule$ActivityStatement.evaluate(ActivityTestRule.java:270)
at org.junit.rules.RunRules.evaluate(RunRules.java:20)
at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
at org.junit.runners.Suite.runChild(Suite.java:128)
at …

我正在尝试学习android espresso ..我遵循了一些基本的教程,它工作正常.但现在我想在android导航抽屉上做一些测试.为此我需要使用gradle依赖androidTestCompile'c​​om.android.support.test.espresso:espresso-contrib:2.2.2',但它导致与其他依赖项冲突.我的gradle文件:

apply plugin: 'com.android.application'

android {
compileSdkVersion 23
buildToolsVersion "23.0.3"

defaultConfig {
    applicationId "my.com.myapp_android"
    minSdkVersion 18
    targetSdkVersion 23
    versionCode 1
    versionName "1.0"
    testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
}
buildTypes {
    release {
        minifyEnabled false
        proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
    }
}
}
repositories {
jcenter()
}
dependencies {
compile fileTree(dir: 'libs', include: ['*.jar'])
testCompile 'junit:junit:4.12'
//material design
compile 'com.android.support:appcompat-v7:23.3.0'
compile 'com.android.support:support-v4:23.3.0'

//zxing
compile 'com.journeyapps:zxing-android-embedded:3.2.0@aar'
compile 'com.google.zxing:core:3.2.1'

//Testing
// Optional -- Mockito framework
testCompile 'org.mockito:mockito-core:1.10.19'
androidTestCompile 'com.android.support:support-annotations:23.3.0'
androidTestCompile 'com.android.support.test:runner:0.5'
androidTestCompile 'com.android.support.test:rules:0.4.1'
// …