better logging from MPU examples

Author: kessplas

src/test/java/software/amazon/encryption/s3/examples/MultipartUploadExampleTest.java

@@ -5,11 +5,18 @@
 
 import java.io.IOException;
 
+import static org.junit.jupiter.api.Assertions.fail;
+
 public class MultipartUploadExampleTest {
 
     @Test
     public void testMultipartUploadExamples() throws IOException {
         final String bucket = S3EncryptionClientTestResources.BUCKET;
-        MultipartUploadExample.main(new String[]{bucket});
+        try {
+            MultipartUploadExample.main(new String[]{bucket});
+        } catch (Throwable exception) {
+            exception.printStackTrace();
+            fail("Multipart Example Test Failed!!", exception);
+        }
     }
 }