Add more tests for ClipboardUtilsTest

src/test/java/me/goudham/ClipboardUtilsTest.java

@@ -1,21 +1,26 @@
 package me.goudham;
 
-import java.awt.datatransfer.DataFlavor;
 import java.awt.datatransfer.StringSelection;
 import java.awt.datatransfer.Transferable;
 import java.awt.datatransfer.UnsupportedFlavorException;
+import java.awt.image.BufferedImage;
+import java.io.File;
 import java.io.IOException;
+import java.util.List;
 import org.junit.jupiter.api.BeforeEach;
 import org.junit.jupiter.api.Test;
 import org.mockito.Mock;
 import org.mockito.MockitoAnnotations;
 import org.slf4j.Logger;
 
+import static me.goudham.Contents.FILELIST;
+import static me.goudham.Contents.IMAGE;
 import static me.goudham.Contents.TEXT;
 import static org.hamcrest.MatcherAssert.assertThat;
 import static org.hamcrest.Matchers.is;
 import static org.mockito.Mockito.times;
 import static org.mockito.Mockito.verify;
+import static org.mockito.Mockito.verifyNoInteractions;
 import static org.mockito.Mockito.when;
 
 class ClipboardUtilsTest {
@@ -26,34 +31,90 @@ class ClipboardUtilsTest {
     @Mock
     private Logger logger;
 
+    private ClipboardUtils sut;
+
     @BeforeEach
     void setUp() {
         MockitoAnnotations.openMocks(this);
-        ClipboardUtils.logger = logger;
+        sut = new ClipboardUtils();
+        ClipboardUtils.setLogger(logger);
     }
 
     @Test
     void successfullyGetStringContent() {
-        String expectedString = "testString";
-        Transferable expectedTransferable = new StringSelection(expectedString);
+        String expectedStringContent = "testString";
+        Transferable expectedTransferable = new StringSelection(expectedStringContent);
 
-        String actualStringContent = ClipboardUtils.getStringContent(expectedTransferable);
+        String actualStringContent = sut.getStringContent(expectedTransferable);
 
-        assertThat(actualStringContent, is(expectedString));
+        assertThat(actualStringContent, is(expectedStringContent));
+        verifyNoInteractions(logger);
     }
 
     @Test
     void failToGetStringContent() throws IOException, UnsupportedFlavorException {
-        String expectedString = null;
+        String expectedStringContent = null;
         String expectedExceptionMessage = "Exception Thrown When Receiving String Content";
-        Throwable expectedException = new UnsupportedFlavorException(DataFlavor.stringFlavor);
+        Throwable expectedException = new UnsupportedFlavorException(TEXT.getDataFlavor());
 
         when(transferableMock.isDataFlavorSupported(TEXT.getDataFlavor())).thenReturn(true);
         when(transferableMock.getTransferData(TEXT.getDataFlavor())).thenThrow(expectedException);
 
-        String actualStringContent = ClipboardUtils.getStringContent(transferableMock);
+        String actualStringContent = sut.getStringContent(transferableMock);
+
+        verify(logger, times(1)).info(expectedExceptionMessage, expectedException);
+        assertThat(actualStringContent, is(expectedStringContent));
+    }
+
+    @Test
+    void successfullyGetImageContent() {
+        BufferedImage expectedImageContent = new BufferedImage(1, 1, BufferedImage.TYPE_INT_RGB);
+        Transferable expectedTransferable = new ClipboardListener.TransferableImage(expectedImageContent);
+
+        BufferedImage actualImageContent = sut.getImageContent(expectedTransferable);
+
+        assertThat(actualImageContent, new BufferedImageMatcher(expectedImageContent));
+        verifyNoInteractions(logger);
+    }
+
+    @Test
+    void failToGetImageContent() throws IOException, UnsupportedFlavorException {
+        BufferedImage expectedImageContent = null;
+        String expectedExceptionMessage = "Exception Thrown When Receiving Image Content";
+        Throwable expectedException = new UnsupportedFlavorException(IMAGE.getDataFlavor());
+
+        when(transferableMock.isDataFlavorSupported(IMAGE.getDataFlavor())).thenReturn(true);
+        when(transferableMock.getTransferData(IMAGE.getDataFlavor())).thenThrow(expectedException);
+
+        BufferedImage actualImageContent = sut.getImageContent(transferableMock);
+
+        verify(logger, times(1)).info(expectedExceptionMessage, expectedException);
+        assertThat(actualImageContent, is(expectedImageContent));
+    }
+
+    @Test
+    void successfullyGetFileContent() {
+        List<File> expectedFileContent = List.of(new File("testFile"));
+        Transferable expectedTransferable = new ClipboardListener.TransferableFileList(expectedFileContent);
+
+        List<File> actualFileContent = sut.getFileContent(expectedTransferable);
+
+        assertThat(actualFileContent, is(expectedFileContent));
+        verifyNoInteractions(logger);
+    }
+
+    @Test
+    void failToGetFileContent() throws IOException, UnsupportedFlavorException {
+        List<File> expectedFileContent = null;
+        String expectedExceptionMessage = "Exception Thrown When Receiving File Content";
+        Throwable expectedException = new UnsupportedFlavorException(FILELIST.getDataFlavor());
+
+        when(transferableMock.isDataFlavorSupported(FILELIST.getDataFlavor())).thenReturn(true);
+        when(transferableMock.getTransferData(FILELIST.getDataFlavor())).thenThrow(expectedException);
+
+        List<File> actualFileContent = sut.getFileContent(transferableMock);
 
         verify(logger, times(1)).info(expectedExceptionMessage, expectedException);
-        assertThat(actualStringContent, is(expectedString));
+        assertThat(actualFileContent, is(expectedFileContent));
     }
 }