如何进行Intrumentation Test

1.

在Module中创建androidTest文件夹

module-name/src/androidTest/java/

build.gradle中加入

dependencies {
    androidTestCompile 'com.android.support:support-annotations:24.0.0'
    androidTestCompile 'com.android.support.test:runner:0.5'
    androidTestCompile 'com.android.support.test:rules:0.5'
    // Optional -- Hamcrest library
    androidTestCompile 'org.hamcrest:hamcrest-library:1.3'
    // Optional -- UI testing with Espresso
    androidTestCompile 'com.android.support.test.espresso:espresso-core:2.2.2'
    // Optional -- UI testing with UI Automator
    androidTestCompile 'com.android.support.test.uiautomator:uiautomator-v18:2.1.2'
}

如果用gradle运行instrumentation test，则加入以下配置

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

2. 创建Instrumented class

@RunWith(AndroidJUnit4.class)
@SmallTest
public class SampleAndroidUnitTest {
    @Before
    public void setup() {
    }

    @Test
    public void test1() {
    }
}

如何获取instrumentation

InstrumentationRegistry.getInstrumentation()

3.创建test suite

package name 以.suite结尾

@RunWith(Suite.class)
@Suite.SuiteClasses({CalculatorInstrumentationTest.class,
        CalculatorAddParameterizedTest.class})
public class UnitTestSuite {}

4.运行

./gradlew connectedAndroidTest

html 结果：

path_to_your_project/module_name/build/outputs/reports/androidTests/connected/

或者手动运行：

1. rebuild 主程序和test程序.
2. 在真机上安装主程序和test程序
3. 命令行运行adb shell am instrument -w com.android.foo.test/android.support.test.runner.AndroidJUnitRunner