Test Adapter Pattern

Design Patterns/src/adapter/animal/tests/BirdAdapterTest.java

@@ -0,0 +1,21 @@
+package adapter.animal.tests;
+
+import adapter.animal.Bird;
+import adapter.animal.BirdAdapter;
+import adapter.animal.Sparrow;
+import adapter.animal.ToyDuck;
+import org.junit.jupiter.api.Test;
+
+import static org.mockito.Mockito.*;
+
+class BirdAdapterTest {
+
+    @Test
+    void verifyMakeSoundIsCalled() {
+        Bird mockedSparrow = mock(Sparrow.class);
+        ToyDuck birdAdapter = new BirdAdapter(mockedSparrow);
+
+        birdAdapter.squeak();
+        verify(mockedSparrow, times(1)).makeSound();
+    }
+}