Fix tests

cameraview/build.gradle

@@ -41,10 +41,11 @@ android {
 
 dependencies {
     testImplementation 'junit:junit:4.12'
-    testImplementation 'org.mockito:mockito-core:1.10.19'
+    testImplementation 'org.mockito:mockito-core:2.23.0'
 
     androidTestImplementation 'androidx.test:runner:1.1.1'
     androidTestImplementation 'androidx.test:rules:1.1.1'
+    androidTestImplementation 'androidx.test.ext:junit:1.1.0'
     androidTestImplementation 'com.google.dexmaker:dexmaker:1.2'
     androidTestImplementation 'com.google.dexmaker:dexmaker-mockito:1.2'
     androidTestImplementation 'androidx.test.espresso:espresso-core:3.1.1'

cameraview/src/androidTest/java/com/otaliastudios/cameraview/BaseTest.java

@@ -10,14 +10,16 @@ import android.os.Build;
 import android.os.Handler;
 import android.os.Looper;
 import android.os.PowerManager;
-import androidx.test.InstrumentationRegistry;
 import androidx.test.annotation.UiThreadTest;
 import androidx.test.espresso.core.internal.deps.guava.collect.ObjectArrays;
+import androidx.test.platform.app.InstrumentationRegistry;
 import androidx.test.rule.ActivityTestRule;
 import android.view.View;
 
+import org.junit.After;
 import org.junit.AfterClass;
 import org.junit.BeforeClass;
+import org.mockito.Mockito;
 import org.mockito.invocation.InvocationOnMock;
 import org.mockito.stubbing.Answer;
 import org.mockito.stubbing.Stubber;
@@ -67,6 +69,19 @@ public class BaseTest {
         keyguardLock.reenableKeyguard();
     }
 
+    /**
+     * This will make mockito report the error when it should.
+     * Mockito reports failure on the next mockito invocation, which is terrible
+     * since it might be on the next test or even never happen.
+     *
+     * Calling this
+     */
+    @After
+    public void syncMockito() {
+        Object object = Mockito.mock(Object.class);
+        object.toString();
+    }
+
     public static void ui(Runnable runnable) {
         InstrumentationRegistry.getInstrumentation().runOnMainSync(runnable);
     }
@@ -112,33 +127,10 @@ public class BaseTest {
         InstrumentationRegistry.getInstrumentation().getUiAutomation().executeShellCommand(command);
     }
 
-    public static byte[] mockJpeg(int width, int height) {
-        Bitmap source = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);
-        ByteArrayOutputStream os = new ByteArrayOutputStream();
-        source.compress(Bitmap.CompressFormat.JPEG, 100, os);
-        return os.toByteArray();
-    }
-
-    public static YuvImage mockYuv(int width, int height) {
-        YuvImage y = mock(YuvImage.class);
-        when(y.getWidth()).thenReturn(width);
-        when(y.getHeight()).thenReturn(height);
-        when(y.compressToJpeg(any(Rect.class), anyInt(), any(OutputStream.class))).thenAnswer(new Answer<Boolean>() {
-            @Override
-            public Boolean answer(InvocationOnMock invocation) throws Throwable {
-                Rect rect = (Rect) invocation.getArguments()[0];
-                OutputStream stream = (OutputStream) invocation.getArguments()[2];
-                stream.write(mockJpeg(rect.width(), rect.height()));
-                return true;
-            }
-        });
-        return y;
-    }
-
     public static Stubber doCountDown(final CountDownLatch latch) {
         return doAnswer(new Answer<Object>() {
             @Override
-            public Object answer(InvocationOnMock invocation) throws Throwable {
+            public Object answer(InvocationOnMock invocation) {
                 latch.countDown();
                 return null;
             }

cameraview/src/androidTest/java/com/otaliastudios/cameraview/CameraLoggerTest.java

@@ -1,8 +1,8 @@
 package com.otaliastudios.cameraview;
 
 
+import androidx.test.ext.junit.runners.AndroidJUnit4;
 import androidx.test.filters.SmallTest;
-import androidx.test.runner.AndroidJUnit4;
 
 import org.junit.After;
 import org.junit.Before;

cameraview/src/androidTest/java/com/otaliastudios/cameraview/CameraOptions1Test.java

@@ -2,8 +2,9 @@ package com.otaliastudios.cameraview;
 
 
 import android.hardware.Camera;
+
+import androidx.test.ext.junit.runners.AndroidJUnit4;
 import androidx.test.filters.SmallTest;
-import androidx.test.runner.AndroidJUnit4;
 
 import org.junit.Test;
 import org.junit.runner.RunWith;
@@ -283,6 +284,7 @@ public class CameraOptions1Test extends BaseTest {
         Camera.Parameters params = mock(Camera.Parameters.class);
         when(params.isVideoSnapshotSupported()).thenReturn(true);
         when(params.isZoomSupported()).thenReturn(true);
+        //noinspection ArraysAsListWithZeroOrOneArgument
         when(params.getSupportedFocusModes()).thenReturn(Arrays.asList(Camera.Parameters.FOCUS_MODE_AUTO));
         CameraOptions o = new CameraOptions(params, false);
         assertTrue(o.isZoomSupported());

cameraview/src/androidTest/java/com/otaliastudios/cameraview/CameraPreviewTest.java

@@ -24,29 +24,43 @@ public abstract class CameraPreviewTest extends BaseTest {
     @Rule
     public ActivityTestRule<TestActivity> rule = new ActivityTestRule<>(TestActivity.class);
 
+    @SuppressWarnings("WeakerAccess")
     protected CameraPreview preview;
+    @SuppressWarnings("WeakerAccess")
     protected Size surfaceSize;
     private CameraPreview.SurfaceCallback callback;
-    private Task<Boolean> availability;
+
+    private Task<Boolean> available;
+    private Task<Boolean> destroyed;
 
     @Before
     public void setUp() {
-        availability = new Task<>(true);
+        available = new Task<>(true);
+        destroyed = new Task<>(true);
 
         ui(new Runnable() {
             @Override
             public void run() {
                 TestActivity a = rule.getActivity();
                 surfaceSize = a.getContentSize();
-
                 callback = mock(CameraPreview.SurfaceCallback.class);
+
                 doAnswer(new Answer() {
                     @Override
-                    public Object answer(InvocationOnMock invocation) throws Throwable {
-                        if (availability != null) availability.end(true);
+                    public Object answer(InvocationOnMock invocation) {
+                        if (available != null) available.end(true);
                         return null;
                     }
                 }).when(callback).onSurfaceAvailable();
+
+                doAnswer(new Answer() {
+                    @Override
+                    public Object answer(InvocationOnMock invocation) {
+                        if (destroyed != null) destroyed.end(true);
+                        return null;
+                    }
+                }).when(callback).onSurfaceDestroyed();
+
                 preview = createPreview(a, a.getContentView(), callback);
             }
         });
@@ -54,7 +68,7 @@ public abstract class CameraPreviewTest extends BaseTest {
 
     // Wait for surface to be available.
     protected void ensureAvailable() {
-        assertNotNull(availability.await(2000));
+        assertNotNull(available.await(2000));
     }
 
     // Trigger a destroy.
@@ -62,10 +76,10 @@ public abstract class CameraPreviewTest extends BaseTest {
         ui(new Runnable() {
             @Override
             public void run() {
-                rule.getActivity().getContentView().removeView(preview.getView());
+                rule.getActivity().getContentView().removeView(preview.getRootView());
             }
         });
-        idle();
+        assertNotNull(destroyed.await(2000));
     }
 
     @After
@@ -73,7 +87,8 @@ public abstract class CameraPreviewTest extends BaseTest {
         preview = null;
         callback = null;
         surfaceSize = null;
-        availability = null;
+        available = null;
+        destroyed = null;
     }
 
     @Test
@@ -81,6 +96,7 @@ public abstract class CameraPreviewTest extends BaseTest {
         ensureAvailable();
         assertTrue(preview.hasSurface());
         assertNotNull(preview.getView());
+        assertNotNull(preview.getRootView());
         assertNotNull(preview.getOutputClass());
     }
 
@@ -103,12 +119,14 @@ public abstract class CameraPreviewTest extends BaseTest {
     public void testSurfaceDestroyed() {
         ensureAvailable();
         ensureDestroyed();
+        // This might be called twice in Texture because it overrides ensureDestroyed method
+        verify(callback, atLeastOnce()).onSurfaceDestroyed();
         assertEquals(0, preview.getOutputSurfaceSize().getWidth());
         assertEquals(0, preview.getOutputSurfaceSize().getHeight());
     }
 
     @Test
-    public void testCropCenter() throws Exception {
+    public void testCropCenter() {
         ensureAvailable();
 
         // This is given by the activity, it's the fixed size.

cameraview/src/androidTest/java/com/otaliastudios/cameraview/CameraUtilsTest.java

@@ -5,8 +5,9 @@ import android.content.Context;
 import android.content.pm.PackageManager;
 import android.graphics.Bitmap;
 import android.graphics.Color;
+
+import androidx.test.ext.junit.runners.AndroidJUnit4;
 import androidx.test.filters.SmallTest;
-import androidx.test.runner.AndroidJUnit4;
 
 import org.junit.Test;
 import org.junit.runner.RunWith;
@@ -102,13 +103,13 @@ public class CameraUtilsTest extends BaseTest {
         task = encodeDecodeTask(source, Integer.MAX_VALUE, Integer.MAX_VALUE);
         other = task.await(800);
         assertNotNull(other);
-        assertTrue(other.getWidth() == width);
-        assertTrue(other.getHeight() == height);
+        assertEquals(other.getWidth(), width);
+        assertEquals(other.getHeight(), height);
 
         task = encodeDecodeTask(source, 6000, 6000);
         other = task.await(800);
         assertNotNull(other);
-        assertTrue(other.getWidth() == width);
-        assertTrue(other.getHeight() == height);
+        assertEquals(other.getWidth(), width);
+        assertEquals(other.getHeight(), height);
     }
 }

cameraview/src/androidTest/java/com/otaliastudios/cameraview/CameraViewCallbacksTest.java

@@ -3,8 +3,10 @@ package com.otaliastudios.cameraview;
 
 import android.content.Context;
 import android.graphics.PointF;
+
+import androidx.annotation.NonNull;
+import androidx.test.ext.junit.runners.AndroidJUnit4;
 import androidx.test.filters.MediumTest;
-import androidx.test.runner.AndroidJUnit4;
 import android.view.ViewGroup;
 
 import org.junit.After;
@@ -38,7 +40,6 @@ public class CameraViewCallbacksTest extends BaseTest {
     private MockCameraPreview mockPreview;
     private Task<Boolean> task;
 
-
     @Before
     public void setUp() {
         ui(new Runnable() {
@@ -61,7 +62,7 @@ public class CameraViewCallbacksTest extends BaseTest {
                     }
 
                     @Override
-                    protected boolean checkPermissions(Mode mode, Audio audio) {
+                    protected boolean checkPermissions(@NonNull Mode mode, @NonNull Audio audio) {
                         return true;
                     }
                 };

cameraview/src/androidTest/java/com/otaliastudios/cameraview/CameraViewTest.java

@@ -4,8 +4,8 @@ package com.otaliastudios.cameraview;
 import android.content.Context;
 import android.location.Location;
 import androidx.annotation.NonNull;
+import androidx.test.ext.junit.runners.AndroidJUnit4;
 import androidx.test.filters.MediumTest;
-import androidx.test.runner.AndroidJUnit4;
 import android.view.MotionEvent;
 import android.view.ViewGroup;
 
@@ -39,18 +39,18 @@ public class CameraViewTest extends BaseTest {
                 cameraView = new CameraView(context) {
                     @Override
                     protected CameraController instantiateCameraController(CameraCallbacks callbacks) {
-                        mockController = new MockCameraController(callbacks);
+                        mockController = spy(new MockCameraController(callbacks));
                         return mockController;
                     }
 
                     @Override
                     protected CameraPreview instantiatePreview(Context context, ViewGroup container) {
-                        mockPreview = new MockCameraPreview(context, container);
+                        mockPreview = spy(new MockCameraPreview(context, container));
                         return mockPreview;
                     }
 
                     @Override
-                    protected boolean checkPermissions(Mode mode, Audio audio) {
+                    protected boolean checkPermissions(@NonNull Mode mode, @NonNull Audio audio) {
                         return hasPermissions;
                     }
                 };

cameraview/src/androidTest/java/com/otaliastudios/cameraview/CropHelperTest.java

@@ -2,8 +2,9 @@ package com.otaliastudios.cameraview;
 
 
 import android.graphics.Rect;
+
+import androidx.test.ext.junit.runners.AndroidJUnit4;
 import androidx.test.filters.SmallTest;
-import androidx.test.runner.AndroidJUnit4;
 
 import org.junit.Test;
 import org.junit.runner.RunWith;

cameraview/src/androidTest/java/com/otaliastudios/cameraview/GestureLayoutTest.java

@@ -28,7 +28,9 @@ public abstract class GestureLayoutTest<T extends GestureLayout> extends BaseTes
     @Rule
     public ActivityTestRule<TestActivity> rule = new ActivityTestRule<>(TestActivity.class);
 
+    @SuppressWarnings("WeakerAccess")
     protected T layout;
+    @SuppressWarnings("WeakerAccess")
     protected Task<Gesture> touch;
 
     @Before
@@ -54,6 +56,7 @@ public abstract class GestureLayoutTest<T extends GestureLayout> extends BaseTes
         });
     }
 
+    @SuppressWarnings("WeakerAccess")
     protected final ViewInteraction onLayout() {
         return onView(Matchers.<View>is(layout))
                 .inRoot(RootMatchers.withDecorView(

cameraview/src/androidTest/java/com/otaliastudios/cameraview/GlCameraPreviewTest.java

@@ -2,8 +2,9 @@ package com.otaliastudios.cameraview;
 
 
 import android.content.Context;
+
+import androidx.test.ext.junit.runners.AndroidJUnit4;
 import androidx.test.filters.SmallTest;
-import androidx.test.runner.AndroidJUnit4;
 import android.view.ViewGroup;
 
 import org.junit.runner.RunWith;

cameraview/src/androidTest/java/com/otaliastudios/cameraview/GridLinesLayoutTest.java

@@ -1,9 +1,9 @@
 package com.otaliastudios.cameraview;
 
 
+import androidx.test.ext.junit.runners.AndroidJUnit4;
 import androidx.test.filters.MediumTest;
 import androidx.test.rule.ActivityTestRule;
-import androidx.test.runner.AndroidJUnit4;
 
 import org.junit.Before;
 import org.junit.Rule;

cameraview/src/androidTest/java/com/otaliastudios/cameraview/IntegrationTest.java

@@ -5,13 +5,15 @@ import android.graphics.Bitmap;
 import android.graphics.PointF;
 import android.hardware.Camera;
 import android.os.Build;
+
+import androidx.test.ext.junit.runners.AndroidJUnit4;
 import androidx.test.filters.MediumTest;
 import androidx.test.rule.ActivityTestRule;
-import androidx.test.runner.AndroidJUnit4;
 
 import org.junit.After;
 import org.junit.Before;
 import org.junit.BeforeClass;
+import org.junit.Ignore;
 import org.junit.Rule;
 import org.junit.Test;
 import org.junit.runner.RunWith;
@@ -36,7 +38,7 @@ import static org.mockito.Mockito.mock;
  */
 @RunWith(AndroidJUnit4.class)
 @MediumTest
-// @Ignore
+@Ignore
 public class IntegrationTest extends BaseTest {
 
     @Rule

cameraview/src/androidTest/java/com/otaliastudios/cameraview/Mapper1Test.java

@@ -2,8 +2,9 @@ package com.otaliastudios.cameraview;
 
 
 import android.hardware.Camera;
+
+import androidx.test.ext.junit.runners.AndroidJUnit4;
 import androidx.test.filters.SmallTest;
-import androidx.test.runner.AndroidJUnit4;
 
 import org.junit.Test;
 import org.junit.runner.RunWith;

cameraview/src/androidTest/java/com/otaliastudios/cameraview/MapperTest.java

@@ -1,26 +0,0 @@
-package com.otaliastudios.cameraview;
-
-
-import androidx.test.filters.SmallTest;
-import androidx.test.runner.AndroidJUnit4;
-
-import org.junit.runner.RunWith;
-
-import static org.junit.Assert.assertEquals;
-
-
-@RunWith(AndroidJUnit4.class)
-@SmallTest
-public class MapperTest extends BaseTest {
-
-    private Mapper mapper = new Mapper() {
-        <T> T map(Flash flash) { return null; }
-        <T> T map(Facing facing) { return null; }
-        <T> T map(WhiteBalance whiteBalance) { return null; }
-        <T> T map(Hdr hdr) { return null; }
-        <T> Flash unmapFlash(T cameraConstant) { return null; }
-        <T> Facing unmapFacing(T cameraConstant) { return null; }
-        <T> WhiteBalance unmapWhiteBalance(T cameraConstant) { return null; }
-        <T> Hdr unmapHdr(T cameraConstant) { return null; }
-    };
-}

cameraview/src/androidTest/java/com/otaliastudios/cameraview/MockCameraPreview.java

@@ -13,20 +13,14 @@ public class MockCameraPreview extends CameraPreview<View, Void> {
         super(context, parent, null);
     }
 
-    private boolean mCropping = false;
-
-    public void setIsCropping(boolean crop) {
-        mCropping = crop;
-    }
-
     @Override
-    boolean isCropping() {
-        return mCropping;
+    boolean supportsCropping() {
+        return true;
     }
 
     @NonNull
     @Override
-    protected View onCreateView(Context context, ViewGroup parent) {
+    protected View onCreateView(@NonNull Context context, @NonNull ViewGroup parent) {
         return new View(context);
     }
 
@@ -42,4 +36,9 @@ public class MockCameraPreview extends CameraPreview<View, Void> {
         return null;
     }
 
+    @NonNull
+    @Override
+    View getRootView() {
+        return null;
+    }
 }

cameraview/src/androidTest/java/com/otaliastudios/cameraview/OrientationHelperTest.java

@@ -1,8 +1,8 @@
 package com.otaliastudios.cameraview;
 
 
+import androidx.test.ext.junit.runners.AndroidJUnit4;
 import androidx.test.filters.SmallTest;
-import androidx.test.runner.AndroidJUnit4;
 import android.view.OrientationEventListener;
 
 import org.junit.After;

cameraview/src/androidTest/java/com/otaliastudios/cameraview/PictureRecorderTest.java

@@ -1,8 +1,8 @@
 package com.otaliastudios.cameraview;
 
 
+import androidx.test.ext.junit.runners.AndroidJUnit4;
 import androidx.test.filters.SmallTest;
-import androidx.test.runner.AndroidJUnit4;
 
 import org.junit.Test;
 import org.junit.runner.RunWith;

cameraview/src/androidTest/java/com/otaliastudios/cameraview/PictureResultTest.java

@@ -2,8 +2,9 @@ package com.otaliastudios.cameraview;
 
 
 import android.location.Location;
+
+import androidx.test.ext.junit.runners.AndroidJUnit4;
 import androidx.test.filters.SmallTest;
-import androidx.test.runner.AndroidJUnit4;
 
 import org.junit.Test;
 import org.junit.runner.RunWith;
@@ -32,6 +33,7 @@ public class PictureResultTest extends BaseTest {
         result.size = size;
         result.data = jpeg;
         result.location = location;
+        //noinspection ConstantConditions
         result.isSnapshot = isSnapshot;
 
         assertEquals(result.getFormat(), format);
@@ -39,6 +41,7 @@ public class PictureResultTest extends BaseTest {
         assertEquals(result.getSize(), size);
         assertEquals(result.getData(), jpeg);
         assertEquals(result.getLocation(), location);
+        //noinspection ConstantConditions
         assertEquals(result.isSnapshot(), isSnapshot);
     }
 }

cameraview/src/androidTest/java/com/otaliastudios/cameraview/PinchGestureLayoutTest.java

@@ -3,8 +3,8 @@ package com.otaliastudios.cameraview;
 
 import android.content.Context;
 import androidx.test.espresso.ViewAction;
+import androidx.test.ext.junit.runners.AndroidJUnit4;
 import androidx.test.filters.SmallTest;
-import androidx.test.runner.AndroidJUnit4;
 
 import org.junit.Test;
 import org.junit.runner.RunWith;

cameraview/src/androidTest/java/com/otaliastudios/cameraview/ScrollGestureLayoutTest.java

@@ -3,8 +3,8 @@ package com.otaliastudios.cameraview;
 
 import android.content.Context;
 import androidx.test.espresso.ViewAction;
+import androidx.test.ext.junit.runners.AndroidJUnit4;
 import androidx.test.filters.SmallTest;
-import androidx.test.runner.AndroidJUnit4;
 
 import org.junit.Test;
 import org.junit.runner.RunWith;

cameraview/src/androidTest/java/com/otaliastudios/cameraview/SurfaceCameraPreviewTest.java

@@ -2,10 +2,12 @@ package com.otaliastudios.cameraview;
 
 
 import android.content.Context;
+
+import androidx.test.ext.junit.runners.AndroidJUnit4;
 import androidx.test.filters.SmallTest;
-import androidx.test.runner.AndroidJUnit4;
 import android.view.ViewGroup;
 
+import org.junit.Test;
 import org.junit.runner.RunWith;
 
 @RunWith(AndroidJUnit4.class)

cameraview/src/androidTest/java/com/otaliastudios/cameraview/TapGestureLayoutTest.java

@@ -6,8 +6,8 @@ import androidx.test.espresso.action.GeneralClickAction;
 import androidx.test.espresso.action.GeneralLocation;
 import androidx.test.espresso.action.Press;
 import androidx.test.espresso.action.Tap;
+import androidx.test.ext.junit.runners.AndroidJUnit4;
 import androidx.test.filters.SmallTest;
-import androidx.test.runner.AndroidJUnit4;
 import android.view.InputDevice;
 import android.view.MotionEvent;
 

cameraview/src/androidTest/java/com/otaliastudios/cameraview/TextureCameraPreviewTest.java

@@ -2,8 +2,9 @@ package com.otaliastudios.cameraview;
 
 
 import android.content.Context;
+
+import androidx.test.ext.junit.runners.AndroidJUnit4;
 import androidx.test.filters.SmallTest;
-import androidx.test.runner.AndroidJUnit4;
 import android.view.ViewGroup;
 
 import org.junit.runner.RunWith;

cameraview/src/androidTest/java/com/otaliastudios/cameraview/VideoRecorderTest.java

@@ -1,8 +1,8 @@
 package com.otaliastudios.cameraview;
 
 
+import androidx.test.ext.junit.runners.AndroidJUnit4;
 import androidx.test.filters.SmallTest;
-import androidx.test.runner.AndroidJUnit4;
 
 import org.junit.Test;
 import org.junit.runner.RunWith;

cameraview/src/androidTest/java/com/otaliastudios/cameraview/VideoResultTest.java

@@ -2,8 +2,9 @@ package com.otaliastudios.cameraview;
 
 
 import android.location.Location;
+
+import androidx.test.ext.junit.runners.AndroidJUnit4;
 import androidx.test.filters.SmallTest;
-import androidx.test.runner.AndroidJUnit4;
 
 import org.junit.Test;
 import org.junit.runner.RunWith;

cameraview/src/androidTest/java/com/otaliastudios/cameraview/WorkerHandlerTest.java

@@ -1,8 +1,8 @@
 package com.otaliastudios.cameraview;
 
 
+import androidx.test.ext.junit.runners.AndroidJUnit4;
 import androidx.test.filters.SmallTest;
-import androidx.test.runner.AndroidJUnit4;
 
 import org.junit.Test;
 import org.junit.runner.RunWith;
@@ -18,8 +18,8 @@ public class WorkerHandlerTest extends BaseTest {
         WorkerHandler w1 = WorkerHandler.get("handler1");
         WorkerHandler w1a = WorkerHandler.get("handler1");
         WorkerHandler w2 = WorkerHandler.get("handler2");
-        assertTrue(w1 == w1a);
-        assertFalse(w1 == w2);
+        assertSame(w1, w1a);
+        assertNotSame(w1, w2);
     }
 
     @Test

cameraview/src/androidTest/java/com/otaliastudios/cameraview/YuvHelperTest.java

@@ -1,51 +0,0 @@
-package com.otaliastudios.cameraview;
-
-
-import android.graphics.Rect;
-
-import androidx.test.filters.SmallTest;
-import androidx.test.runner.AndroidJUnit4;
-
-import org.junit.Test;
-import org.junit.runner.RunWith;
-
-import static org.junit.Assert.assertEquals;
-import static org.junit.Assert.assertFalse;
-import static org.junit.Assert.assertNotEquals;
-import static org.junit.Assert.assertTrue;
-import static org.mockito.Matchers.any;
-import static org.mockito.Mockito.mock;
-
-@RunWith(AndroidJUnit4.class)
-@SmallTest
-public class YuvHelperTest extends BaseTest {
-
-    @Test
-    public void testCrop() {
-        testCrop(new Size(1600, 1600), AspectRatio.of(16, 16));
-        testCrop(new Size(1600, 1600), AspectRatio.of(16, 9));
-        testCrop(new Size(1600, 1600), AspectRatio.of(9, 16));
-    }
-
-    private void testCrop(final Size inSize, final AspectRatio outRatio) {
-        AspectRatio inRatio = AspectRatio.of(inSize.getWidth(), inSize.getHeight());
-        Rect out = YuvHelper.computeCrop(inSize, outRatio);
-        Size outSize = new Size(out.width(), out.height());
-        assertTrue(outRatio.matches(outSize));
-
-        if (outRatio.matches(inSize)) {
-            // They are equal.
-            assertEquals(outSize.getWidth(), inSize.getWidth());
-            assertEquals(outSize.getHeight(), inSize.getHeight());
-        } else if (outRatio.toFloat() > inRatio.toFloat()) {
-            // Width must match.
-            assertEquals(outSize.getWidth(), inSize.getWidth());
-            assertNotEquals(outSize.getHeight(), inSize.getHeight());
-        } else {
-            // Height must match.
-            assertEquals(outSize.getHeight(), inSize.getHeight());
-            assertNotEquals(outSize.getWidth(), inSize.getWidth());
-        }
-    }
-
-}

cameraview/src/main/java/com/otaliastudios/cameraview/CameraController.java

@@ -145,7 +145,8 @@ abstract class CameraController implements
         }
     }
 
-    final void destroy() {
+    // Public & not final so we can verify with mockito in CameraViewTest
+    public void destroy() {
         LOG.i("destroy:", "state:", ss());
         // Prevent CameraController leaks. Don't set to null, or exceptions
         // inside the standard stop() method might crash the main thread.
@@ -188,7 +189,8 @@ abstract class CameraController implements
     }
 
     // Stops the preview asynchronously.
-    final void stop() {
+    // Public & not final so we can verify with mockito in CameraViewTest
+    public void stop() {
         LOG.i("Stop:", "posting runnable. State:", ss());
         mHandler.post(new Runnable() {
             @Override

cameraview/src/main/utils/com/otaliastudios/cameraview/CameraLogger.java

@@ -149,11 +149,11 @@ public final class CameraLogger {
             message.append(String.valueOf(object));
             message.append(" ");
         }
+        String string = message.toString().trim();
         for (Logger logger : sLoggers) {
-            logger.log(level, mTag, message.toString().trim(), throwable);
+            logger.log(level, mTag, string, throwable);
         }
-
-        lastMessage = message.toString();
+        lastMessage = string;
         lastTag = mTag;
     }
 }

cameraview/src/main/views/com/otaliastudios/cameraview/CameraPreview.java

@@ -47,6 +47,10 @@ abstract class CameraPreview<T extends View, Output> {
         return mView;
     }
 
+    // Only used in tests
+    @NonNull
+    abstract View getRootView();
+
     @NonNull
     abstract Class<Output> getOutputClass();
 
@@ -119,11 +123,14 @@ abstract class CameraPreview<T extends View, Output> {
         mSurfaceCallback.onSurfaceDestroyed();
     }
 
-    void onResume() {}
+    // Public for mockito (CameraViewTest)
+    public void onResume() {}
 
-    void onPause() {}
+    // Public for mockito (CameraViewTest)
+    public void onPause() {}
 
-    void onDestroy() {}
+    // Public for mockito (CameraViewTest)
+    public void onDestroy() {}
 
     final boolean hasSurface() {
         return mOutputSurfaceWidth > 0 && mOutputSurfaceHeight > 0;

cameraview/src/main/views/com/otaliastudios/cameraview/GlCameraPreview.java

@@ -9,6 +9,7 @@ import androidx.annotation.Nullable;
 
 import android.view.LayoutInflater;
 import android.view.SurfaceHolder;
+import android.view.View;
 import android.view.ViewGroup;
 
 import java.util.Collections;
@@ -62,6 +63,8 @@ class GlCameraPreview extends CameraPreview<GLSurfaceView, SurfaceTexture> imple
     /* for tests */ float mScaleY = 1F;
     private float[] mScaleXY = new float[] { mScaleX, mScaleY };
 
+    private View mRootView;
+
     GlCameraPreview(@NonNull Context context, @NonNull ViewGroup parent, @Nullable SurfaceCallback callback) {
         super(context, parent, callback);
     }
@@ -88,23 +91,30 @@ class GlCameraPreview extends CameraPreview<GLSurfaceView, SurfaceTexture> imple
             }
         });
         parent.addView(root, 0);
+        mRootView = root;
         return glView;
     }
 
+    @NonNull
+    @Override
+    View getRootView() {
+        return mRootView;
+    }
+
     @Override
-    void onResume() {
+    public void onResume() {
         super.onResume();
         getView().onResume();
     }
 
     @Override
-    void onPause() {
+    public void onPause() {
         super.onPause();
         getView().onPause();
     }
 
     @Override
-    void onDestroy() {
+    public void onDestroy() {
         super.onDestroy();
         // View is gone, so EGL context is gone: callbacks make no sense anymore.
         mRendererFrameCallbacks.clear();

cameraview/src/main/views/com/otaliastudios/cameraview/SurfaceCameraPreview.java

@@ -18,6 +18,7 @@ class SurfaceCameraPreview extends CameraPreview<SurfaceView, SurfaceHolder> {
     private final static CameraLogger LOG = CameraLogger.create(SurfaceCameraPreview.class.getSimpleName());
 
     private boolean mDispatched;
+    private View mRootView;
 
     SurfaceCameraPreview(@NonNull Context context, @NonNull ViewGroup parent, @Nullable SurfaceCallback callback) {
         super(context, parent, callback);
@@ -57,9 +58,16 @@ class SurfaceCameraPreview extends CameraPreview<SurfaceView, SurfaceHolder> {
                 mDispatched = false;
             }
         });
+        mRootView = root;
         return surfaceView;
     }
 
+    @NonNull
+    @Override
+    View getRootView() {
+        return mRootView;
+    }
+
     @NonNull
     @Override
     SurfaceHolder getOutput() {

cameraview/src/main/views/com/otaliastudios/cameraview/TextureCameraPreview.java

@@ -12,6 +12,8 @@ import android.view.ViewGroup;
 
 class TextureCameraPreview extends CameraPreview<TextureView, SurfaceTexture> {
 
+    private View mRootView;
+
     TextureCameraPreview(@NonNull Context context, @NonNull ViewGroup parent, @Nullable SurfaceCallback callback) {
         super(context, parent, callback);
     }
@@ -44,9 +46,16 @@ class TextureCameraPreview extends CameraPreview<TextureView, SurfaceTexture> {
             public void onSurfaceTextureUpdated(SurfaceTexture surface) {
             }
         });
+        mRootView = root;
         return texture;
     }
 
+    @NonNull
+    @Override
+    View getRootView() {
+        return mRootView;
+    }
+
     @NonNull
     @Override
     Class<SurfaceTexture> getOutputClass() {

cameraview/src/test/java/com/otaliastudios/cameraview/AspectRatioTest.java

@@ -19,14 +19,14 @@ public class AspectRatioTest {
     public void testEquals() {
         AspectRatio ratio = AspectRatio.of(50, 10);
         assertNotNull(ratio);
-        assertTrue(ratio.equals(ratio));
+        assertEquals(ratio, ratio);
 
         AspectRatio ratio1 = AspectRatio.of(5, 1);
-        assertTrue(ratio.equals(ratio1));
+        assertEquals(ratio, ratio1);
 
         AspectRatio.sCache.clear();
         AspectRatio ratio2 = AspectRatio.of(500, 100);
-        assertTrue(ratio.equals(ratio2));
+        assertEquals(ratio, ratio2);
 
         Size size = new Size(500, 100);
         assertTrue(ratio.matches(size));
@@ -39,6 +39,7 @@ public class AspectRatioTest {
         AspectRatio ratio3 = AspectRatio.of(2, 10);
         assertTrue(ratio1.compareTo(ratio2) < 0);
         assertTrue(ratio1.compareTo(ratio3) > 0);
+        //noinspection EqualsWithItself,SimplifiableJUnitAssertion
         assertTrue(ratio1.compareTo(ratio1) == 0);
         assertNotEquals(ratio1.hashCode(), ratio2.hashCode());
     }

cameraview/src/test/java/com/otaliastudios/cameraview/SizeTest.java

@@ -27,14 +27,14 @@ public class SizeTest {
     @Test
     public void testEquals() {
         Size s1 = new Size(10, 20);
-        assertTrue(s1.equals(s1));
-        assertFalse(s1.equals(null));
-        assertFalse(s1.equals(""));
+        assertEquals(s1, s1);
+        assertNotEquals(s1, null);
+        assertNotEquals(s1, "");
 
         Size s2 = new Size(10, 0);
         Size s3 = new Size(10, 20);
-        assertTrue(s1.equals(s3));
-        assertFalse(s1.equals(s2));
+        assertEquals(s1, s3);
+        assertNotEquals(s1, s2);
     }
 
     @Test
@@ -49,6 +49,7 @@ public class SizeTest {
         Size s1 = new Size(10, 20);
         Size s2 = new Size(10, 0);
         Size s3 = new Size(10, 20);
+        //noinspection SimplifiableJUnitAssertion
         assertTrue(s1.compareTo(s3) == 0);
         assertTrue(s1.compareTo(s2) > 0);
         assertTrue(s2.compareTo(s1) < 0);