First prototype of Espresso test infrastructure with automatic screenshoting

briar-android/build.gradle

@@ -49,6 +49,14 @@ dependencies {
 	testImplementation "org.jmock:jmock-legacy:2.8.2"
 	testImplementation "org.hamcrest:hamcrest-library:1.3"
 	testImplementation "org.hamcrest:hamcrest-core:1.3"
+
+	def espressoVersion = '3.0.2'
+	androidTestImplementation "com.android.support.test.espresso:espresso-core:$espressoVersion"
+	androidTestImplementation "com.android.support.test.espresso:espresso-contrib:$espressoVersion"
+	androidTestImplementation "tools.fastlane:screengrab:1.1.0"
+	androidTestAnnotationProcessor "com.google.dagger:dagger-compiler:2.0.2"
+	androidTestCompileOnly 'javax.annotation:jsr250-api:1.0'
+	androidTestImplementation 'junit:junit:4.12'
 }
 
 dependencyVerification {
@@ -248,6 +256,7 @@ android {
 		def now = (long) (System.currentTimeMillis() / 1000)
 		buildConfigField "Long", "BuildTimestamp",
 				"${getStdout(['git', 'log', '-n', '1', '--format=%ct'], now)}000L"
+		testInstrumentationRunner 'org.briarproject.briar.android.test.BriarTestRunner'
 	}
 
 	buildTypes {
@@ -260,6 +269,13 @@ android {
 			crunchPngs false
 			proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.txt'
 		}
+		screenshot {
+			initWith debug
+			applicationIdSuffix ".screenshot"
+			resValue "string", "app_package", "org.briarproject.briar.android.screenshot"
+			resValue "string", "app_name", "Briar Screenshot"
+			testProguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.txt', 'proguard-test.txt'
+		}
 		release {
 			shrinkResources false
 			minifyEnabled true
@@ -268,6 +284,8 @@ android {
 		}
 	}
 
+	testBuildType "screenshot"
+
 	compileOptions {
 		sourceCompatibility JavaVersion.VERSION_1_8
 		targetCompatibility JavaVersion.VERSION_1_8