Instrumented tests ci (#386)

* Trial and error - add instrumented tests to CI

* Trial and error - add instrumented tests to CI

Setup AVD

* Trial and error - add instrumented tests to CI

Fix action version

* Try API level 27 for AVD

ReactiveCircus/android-emulator-runner#45

* Try API level 29 for AVD on macos-latest image

ReactiveCircus/android-emulator-runner#45

* Explicitly watch instrumented test fail

* Fix instrumented tests and prepare merge into master

Author: stefan-niedermann

.github/workflows/android.yml

@@ -10,7 +10,7 @@ jobs:
       - uses: gradle/wrapper-validation-action@v1
 
   test:
-    name: Run Unit Tests
+    name: Unit tests
     runs-on: ubuntu-18.04
 
     steps:
@@ -22,6 +22,22 @@ jobs:
       - name: Unit tests
         run: bash ./gradlew test --stacktrace
 
+  instrumented:
+    name: Android instrumented tests
+    runs-on: macos-latest
+
+    steps:
+      - uses: actions/checkout@v2
+      - name: set up JDK 1.8
+        uses: actions/setup-java@v1
+        with:
+          java-version: 1.8
+      - name: Android instrumented tests
+        uses: reactivecircus/android-emulator-runner@v2
+        with:
+          api-level: 29
+          script: ./gradlew connectDevDebugAndroidTest --stacktrace
+
   apk:
     name: Generate APK
     runs-on: ubuntu-18.04

app/build.gradle

@@ -16,6 +16,7 @@ android {
             }
         }
         multiDexEnabled true
+        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
     }
     buildTypes {
         release {
@@ -123,5 +124,6 @@ dependencies {
     // Tests
     testImplementation 'junit:junit:4.13'
     androidTestImplementation 'androidx.test:runner:1.2.0'
+    androidTestImplementation 'androidx.test.ext:junit:1.1.1'
     androidTestImplementation 'androidx.test.espresso:espresso-core:3.2.0'
 }

app/src/androidTest/java/it/niedermann/nextcloud/deck/ExampleInstrumentedTest.java

@@ -1,8 +1,9 @@
 package it.niedermann.nextcloud.deck;
 
 import android.content.Context;
-import androidx.test.InstrumentationRegistry;
-import androidx.test.runner.AndroidJUnit4;
+
+import androidx.test.ext.junit.runners.AndroidJUnit4;
+import androidx.test.platform.app.InstrumentationRegistry;
 
 import org.junit.Test;
 import org.junit.runner.RunWith;
@@ -19,8 +20,8 @@ public class ExampleInstrumentedTest {
     @Test
     public void useAppContext() {
         // Context of the app under test.
-        Context appContext = InstrumentationRegistry.getTargetContext();
+        Context appContext = InstrumentationRegistry.getInstrumentation().getTargetContext();
 
-        assertEquals("it.niedermann.nextcloud.deck", appContext.getPackageName());
+        assertEquals("it.niedermann.nextcloud.deck.dev", appContext.getPackageName());
     }
 }

app/src/androidTest/java/it/niedermann/nextcloud/deck/util/ColorUtilTest.java

@@ -0,0 +1,33 @@
+package it.niedermann.nextcloud.deck.util;
+
+import android.graphics.Color;
+
+import androidx.annotation.ColorInt;
+import androidx.test.ext.junit.runners.AndroidJUnit4;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertTrue;
+
+/**
+ * Instrumented test, which will execute on an Android device.
+ *
+ * @see <a href="http://d.android.com/tools/testing">Testing documentation</a>
+ */
+@RunWith(AndroidJUnit4.class)
+public class ColorUtilTest {
+
+    @Test
+    public void testIsColorDark() {
+        @ColorInt int[] darkColors = new int[]{Color.BLACK};
+        @ColorInt int[] lightColors = new int[]{Color.WHITE};
+        for (@ColorInt int darkColor : darkColors) {
+            assertTrue(ColorUtil.isColorDark(darkColor));
+        }
+        for (@ColorInt int lightColor : lightColors) {
+            assertFalse(ColorUtil.isColorDark(lightColor));
+        }
+    }
+}