Android basic unit test config settings

Assume the Android project package is com/example/awesomeproject

Directory for instrument test code

app/src/androidTest/java**/com/example/awesomeproject

Directory for unit test code

app/src/test**/java/com/example/awesomeproject

Directory for main project code

app/src/main**/java/com/example/awesomeproject

Make sure the following is in the gradle file.

testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"

androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.2', {
        exclude group: 'com.android.support', module: 'support-annotations'
    })

testCompile 'junit:junit:4.12'

A complete initial gradle file with the basic initial test configs.

android {
    compileSdkVersion 25
    buildToolsVersion "25.0.2"
    defaultConfig {
        applicationId "com.example.awesomeproject"
        minSdkVersion 16
        targetSdkVersion 25
        versionCode 1
        versionName "1.0"
        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }
}

dependencies {
    compile fileTree(dir: 'libs', include: ['*.jar'])
    androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.2', {
        exclude group: 'com.android.support', module: 'support-annotations'
    })
    compile 'com.android.support:appcompat-v7:25.1.0'
    testCompile 'junit:junit:4.12'
}