Setup for instrumentation testing

Currently contains one stub test, just so that
we have something which runs for setting up
CI.

build.gradle

@@ -27,6 +27,7 @@ android {
 
   defaultConfig {
     minSdkVersion 14
+    testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
   }
 }
 
@@ -42,6 +43,11 @@ dependencies {
   testImplementation 'org.robolectric:robolectric:3.5.1'
   testImplementation 'com.google.truth:truth:0.37'
 
+  androidTestImplementation("com.android.support.test.espresso:espresso-core:3.0.1", {
+    exclude group: 'com.android.support', module: 'support-annotations'
+  })
+  androidTestImplementation 'com.android.support.test:runner:1.0.1'
+
   ktlint 'com.github.shyiko:ktlint:0.14.0'
 }
 

src/androidTest/AndroidManifest.xml

@@ -0,0 +1,6 @@
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+          package="androidx.kotlin">
+    <application>
+        <activity android:name=".KotlinTestActivity"/>
+    </application>
+</manifest>

src/androidTest/java/androidx/kotlin/KotlinTestActivity.kt

@@ -0,0 +1,21 @@
+/*
+ * Copyright (C) 2017 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *       http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package androidx.kotlin
+
+import android.app.Activity
+
+class KotlinTestActivity : Activity()

src/androidTest/java/androidx/transition/ExampleTest.kt

@@ -0,0 +1,37 @@
+/*
+ * Copyright (C) 2017 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *       http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package androidx.transition
+
+import android.support.test.filters.LargeTest
+import android.support.test.rule.ActivityTestRule
+import android.support.test.runner.AndroidJUnit4
+import androidx.kotlin.KotlinTestActivity
+import org.junit.Rule
+import org.junit.Test
+import org.junit.runner.RunWith
+
+@LargeTest
+@RunWith(AndroidJUnit4::class)
+class ExampleTest {
+
+    @Rule @JvmField val activityRule = ActivityTestRule(KotlinTestActivity::class.java)
+
+    @Test
+    fun testNothing() {
+        // Do nothing
+    }
+}