Remove custom Canvas shadows from Glide Robolectric tests

The built-in ShadowCanvas can be used.

PiperOrigin-RevId: 482519852

Author: sjudd

library/test/src/test/java/com/bumptech/glide/load/resource/bitmap/CenterInsideTest.java

@@ -10,9 +10,6 @@
 
 import android.app.Application;
 import android.graphics.Bitmap;
-import android.graphics.Canvas;
-import android.graphics.Matrix;
-import android.graphics.Paint;
 import androidx.test.core.app.ApplicationProvider;
 import com.bumptech.glide.Glide;
 import com.bumptech.glide.GlideBuilder;
@@ -33,14 +30,9 @@
 import org.mockito.MockitoAnnotations;
 import org.robolectric.RobolectricTestRunner;
 import org.robolectric.annotation.Config;
-import org.robolectric.annotation.Implementation;
-import org.robolectric.annotation.Implements;
-import org.robolectric.shadows.ShadowCanvas;
 
 @RunWith(RobolectricTestRunner.class)
-@Config(
-    sdk = 18,
-    shadows = {CenterInsideTest.DrawNothingCanvas.class})
+@Config(sdk = 18)
 public class CenterInsideTest {
   @Rule public final KeyTester keyTester = new KeyTester();
 
@@ -119,14 +111,4 @@ public void testEquals() throws NoSuchAlgorithmException {
             new CenterInside(), "acf83850a2e8e9e809c8bfb999e2aede9e932cb897a15367fac9856b96f3ba33")
         .test();
   }
-
-  @Implements(Canvas.class)
-  public static final class DrawNothingCanvas extends ShadowCanvas {
-
-    @Implementation
-    @Override
-    public void drawBitmap(Bitmap bitmap, Matrix matrix, Paint paint) {
-      // Do nothing.
-    }
-  }
 }

library/test/src/test/java/com/bumptech/glide/load/resource/bitmap/FitCenterTest.java

@@ -9,9 +9,6 @@
 
 import android.app.Application;
 import android.graphics.Bitmap;
-import android.graphics.Canvas;
-import android.graphics.Matrix;
-import android.graphics.Paint;
 import androidx.test.core.app.ApplicationProvider;
 import com.bumptech.glide.Glide;
 import com.bumptech.glide.GlideBuilder;
@@ -32,14 +29,9 @@
 import org.mockito.MockitoAnnotations;
 import org.robolectric.RobolectricTestRunner;
 import org.robolectric.annotation.Config;
-import org.robolectric.annotation.Implementation;
-import org.robolectric.annotation.Implements;
-import org.robolectric.shadows.ShadowCanvas;
 
 @RunWith(RobolectricTestRunner.class)
-@Config(
-    sdk = 18,
-    shadows = {FitCenterTest.DrawNothingCanvas.class})
+@Config(sdk = 18)
 public class FitCenterTest {
   @Rule public final KeyTester keyTester = new KeyTester();
 
@@ -103,14 +95,4 @@ public void testEquals() throws NoSuchAlgorithmException {
             new FitCenter(), "eda03bc6969032145110add4bfe399915897406f4ca3a1a7512d07750e60f90d")
         .test();
   }
-
-  @Implements(Canvas.class)
-  public static final class DrawNothingCanvas extends ShadowCanvas {
-
-    @Implementation
-    @Override
-    public void drawBitmap(Bitmap bitmap, Matrix matrix, Paint paint) {
-      // Do nothing.
-    }
-  }
 }

library/test/src/test/java/com/bumptech/glide/load/resource/gif/GifDrawableTest.java

@@ -31,12 +31,9 @@
 import androidx.test.core.app.ApplicationProvider;
 import com.bumptech.glide.gifdecoder.GifDecoder;
 import com.bumptech.glide.load.Transformation;
-import com.bumptech.glide.load.resource.gif.GifDrawableTest.BitmapTrackingShadowCanvas;
 import com.bumptech.glide.tests.TearDownGlide;
 import com.bumptech.glide.tests.Util;
 import com.bumptech.glide.util.Preconditions;
-import java.util.HashSet;
-import java.util.Set;
 import org.junit.After;
 import org.junit.Before;
 import org.junit.Rule;
@@ -47,15 +44,11 @@
 import org.mockito.MockitoAnnotations;
 import org.robolectric.RobolectricTestRunner;
 import org.robolectric.annotation.Config;
-import org.robolectric.annotation.Implementation;
-import org.robolectric.annotation.Implements;
 import org.robolectric.shadow.api.Shadow;
 import org.robolectric.shadows.ShadowCanvas;
 
 @RunWith(RobolectricTestRunner.class)
-@Config(
-    sdk = 18,
-    shadows = {BitmapTrackingShadowCanvas.class})
+@Config(sdk = 18)
 public class GifDrawableTest {
   @Rule public final TearDownGlide tearDownGlide = new TearDownGlide();
 
@@ -100,15 +93,19 @@ public void tearDown() {
     Util.setSdkVersionInt(initialSdkVersion);
   }
 
-  // containsExactly doesn't need its return value checked.
-  @SuppressWarnings("ResultOfMethodCallIgnored")
   @Test
   public void testShouldDrawFirstFrameBeforeAnyFrameRead() {
     Canvas canvas = new Canvas();
     drawable.draw(canvas);
 
-    BitmapTrackingShadowCanvas shadowCanvas = Shadow.extract(canvas);
-    assertThat(shadowCanvas.getDrawnBitmaps()).containsExactly(firstFrame);
+    ShadowCanvas shadowCanvas = Shadow.extract(canvas);
+    assertThat(shadowCanvas.getDescription())
+        .isEqualTo(
+            "Bitmap ("
+                + firstFrame.getWidth()
+                + " x "
+                + firstFrame.getHeight()
+                + ") at (0,0) with height=0 and width=0");
   }
 
   @Test
@@ -633,20 +630,4 @@ private void runLoops(int loopCount, int frameCount) {
       }
     }
   }
-
-  /** Keeps track of the set of Bitmaps drawn to the canvas. */
-  @Implements(Canvas.class)
-  public static final class BitmapTrackingShadowCanvas extends ShadowCanvas {
-    private final Set<Bitmap> drawnBitmaps = new HashSet<>();
-
-    @Implementation
-    @Override
-    public void drawBitmap(Bitmap bitmap, Rect src, Rect dst, Paint paint) {
-      drawnBitmaps.add(bitmap);
-    }
-
-    private Iterable<Bitmap> getDrawnBitmaps() {
-      return drawnBitmaps;
-    }
-  }
 }