Add EdgeToEdgeDelegate window inset tests

app/src/test/java/com/d4rk/androidtutorials/java/utils/EdgeToEdgeDelegateTest.java

@@ -0,0 +1,106 @@
+package com.d4rk.androidtutorials.java.utils;
+
+import static org.junit.Assert.assertNotNull;
+import static org.junit.Assert.assertSame;
+import static org.mockito.ArgumentMatchers.any;
+import static org.mockito.ArgumentMatchers.anyInt;
+import static org.mockito.ArgumentMatchers.eq;
+import static org.mockito.Mockito.mock;
+import static org.mockito.Mockito.mockStatic;
+import static org.mockito.Mockito.verify;
+import static org.mockito.Mockito.when;
+
+import android.app.Activity;
+import android.view.View;
+import android.view.Window;
+
+import androidx.core.graphics.Insets;
+import androidx.core.view.ViewCompat;
+import androidx.core.view.WindowCompat;
+import androidx.core.view.WindowInsetsCompat;
+
+import java.util.concurrent.atomic.AtomicReference;
+
+import org.junit.Test;
+import org.mockito.MockedStatic;
+
+public class EdgeToEdgeDelegateTest {
+
+    @Test
+    public void apply_setsDecorFitsFalseAndAppliesContainerPadding() {
+        Activity activity = mock(Activity.class);
+        Window window = mock(Window.class);
+        when(activity.getWindow()).thenReturn(window);
+        View container = mock(View.class);
+        WindowInsetsCompat windowInsets = mock(WindowInsetsCompat.class);
+        Insets insets = Insets.of(16, 32, 48, 64);
+        when(windowInsets.getInsets(anyInt())).thenReturn(insets);
+
+        AtomicReference<ViewCompat.OnApplyWindowInsetsListener> listenerRef = new AtomicReference<>();
+
+        try (MockedStatic<WindowCompat> windowCompat = mockStatic(WindowCompat.class);
+             MockedStatic<ViewCompat> viewCompat = mockStatic(ViewCompat.class)) {
+            viewCompat.when(() -> ViewCompat.setOnApplyWindowInsetsListener(eq(container), any(ViewCompat.OnApplyWindowInsetsListener.class)))
+                    .thenAnswer(invocation -> {
+                        ViewCompat.OnApplyWindowInsetsListener listener = invocation.getArgument(1);
+                        listenerRef.set(listener);
+                        return null;
+                    });
+
+            EdgeToEdgeDelegate.apply(activity, container);
+
+            windowCompat.verify(() -> WindowCompat.setDecorFitsSystemWindows(window, false));
+            viewCompat.verify(() -> ViewCompat.setOnApplyWindowInsetsListener(eq(container), any(ViewCompat.OnApplyWindowInsetsListener.class)));
+
+            ViewCompat.OnApplyWindowInsetsListener listener = listenerRef.get();
+            assertNotNull(listener);
+
+            WindowInsetsCompat result = listener.onApplyWindowInsets(container, windowInsets);
+            int mask = WindowInsetsCompat.Type.systemBars() | WindowInsetsCompat.Type.displayCutout();
+
+            verify(windowInsets).getInsets(mask);
+            verify(container).setPadding(insets.left, insets.top, insets.right, insets.bottom);
+            assertSame(WindowInsetsCompat.CONSUMED, result);
+        }
+    }
+
+    @Test
+    public void applyBottomBar_setsDecorFitsFalseAndAppliesContainerAndBottomPadding() {
+        Activity activity = mock(Activity.class);
+        Window window = mock(Window.class);
+        when(activity.getWindow()).thenReturn(window);
+        View container = mock(View.class);
+        View bottomNavigationView = mock(View.class);
+        WindowInsetsCompat windowInsets = mock(WindowInsetsCompat.class);
+        Insets insets = Insets.of(8, 16, 24, 32);
+        when(windowInsets.getInsets(anyInt())).thenReturn(insets);
+
+        AtomicReference<ViewCompat.OnApplyWindowInsetsListener> listenerRef = new AtomicReference<>();
+
+        try (MockedStatic<WindowCompat> windowCompat = mockStatic(WindowCompat.class);
+             MockedStatic<ViewCompat> viewCompat = mockStatic(ViewCompat.class)) {
+            viewCompat.when(() -> ViewCompat.setOnApplyWindowInsetsListener(eq(container), any(ViewCompat.OnApplyWindowInsetsListener.class)))
+                    .thenAnswer(invocation -> {
+                        ViewCompat.OnApplyWindowInsetsListener listener = invocation.getArgument(1);
+                        listenerRef.set(listener);
+                        return null;
+                    });
+
+            EdgeToEdgeDelegate.applyBottomBar(activity, container, bottomNavigationView);
+
+            windowCompat.verify(() -> WindowCompat.setDecorFitsSystemWindows(window, false));
+            viewCompat.verify(() -> ViewCompat.setOnApplyWindowInsetsListener(eq(container), any(ViewCompat.OnApplyWindowInsetsListener.class)));
+
+            ViewCompat.OnApplyWindowInsetsListener listener = listenerRef.get();
+            assertNotNull(listener);
+
+            WindowInsetsCompat result = listener.onApplyWindowInsets(container, windowInsets);
+            int mask = WindowInsetsCompat.Type.systemBars() | WindowInsetsCompat.Type.displayCutout();
+
+            verify(windowInsets).getInsets(mask);
+            verify(container).setPadding(insets.left, insets.top, insets.right, 0);
+            verify(bottomNavigationView).setPadding(0, 0, 0, insets.bottom);
+            assertSame(WindowInsetsCompat.CONSUMED, result);
+        }
+    }
+}