設定 Espresso

在 Android 應用模組的 build.gradle 檔案中新增下一個依賴項：

dependencies {   
    // Android JUnit Runner     
    androidTestCompile 'com.android.support.test:runner:0.5'
    // JUnit4 Rules
    androidTestCompile 'com.android.support.test:rules:0.5'
    // Espresso core
    androidTestCompile 'com.android.support.test.espresso:espresso-core:2.2.2'
    // Espresso-contrib for DatePicker, RecyclerView, Drawer actions, Accessibility checks, CountingIdlingResource
    androidTestCompile 'com.android.support.test.espresso:espresso-contrib:2.2.2'
    //UI Automator tests
    androidTestCompile 'com.android.support.test.uiautomator:uiautomator-v18:2.2.2'
}

在 build.gradle 檔案中為 testInstrumentationRunner 引數指定 AndroidJUnitRunner。

android {

  defaultConfig {
    testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
  }

}

此外，新增此依賴項以提供意圖模擬支援

androidTestCompile 'com.android.support.test.espresso:espresso-intents:2.2.2'

並新增此一個用於 webview 測試支援

// Espresso-web for WebView support
androidTestCompile 'com.android.support.test.espresso:espresso-web:2.2.2'