[BAEL-12668] - Make sure the tutorials build doesn't generate any un-committed or un-ignored artifacts

.gitignore

@@ -66,3 +66,10 @@ jmeter/src/main/resources/*-JMeter.csv
 **/nb-configuration.xml
 core-scala/.cache-main
 core-scala/.cache-tests
+
+
+persistence-modules/hibernate5/transaction.log
+apache-avro/src/main/java/com/baeldung/avro/model/
+jta/transaction-logs/
+software-security/sql-injection-samples/derby.log
+spring-soap/src/main/java/com/baeldung/springsoap/gen/

core-java-io/src/test/java/com/baeldung/csv/WriteCsvFileExampleUnitTest.java

@@ -5,6 +5,7 @@ import static org.junit.Assert.assertTrue;
 
 import java.io.File;
 import java.io.FileNotFoundException;
+import java.io.IOException;
 import java.io.PrintWriter;
 import java.util.ArrayList;
 import java.util.List;
@@ -17,7 +18,6 @@ import org.slf4j.LoggerFactory;
 public class WriteCsvFileExampleUnitTest {
     private static final Logger LOG = LoggerFactory.getLogger(WriteCsvFileExampleUnitTest.class);
 
-    private static final String CSV_FILE_NAME = "src/test/resources/exampleOutput.csv";
     private WriteCsvFileExample csvExample;
 
     @Before
@@ -65,12 +65,12 @@ public class WriteCsvFileExampleUnitTest {
     }
 
     @Test
-    public void givenDataArray_whenConvertToCSV_thenOutputCreated() {
+    public void givenDataArray_whenConvertToCSV_thenOutputCreated() throws IOException {
         List<String[]> dataLines = new ArrayList<String[]>();
         dataLines.add(new String[] { "John", "Doe", "38", "Comment Data\nAnother line of comment data" });
         dataLines.add(new String[] { "Jane", "Doe, Jr.", "19", "She said \"I'm being quoted\"" });
 
-        File csvOutputFile = new File(CSV_FILE_NAME);
+        File csvOutputFile = File.createTempFile("exampleOutput", ".csv");
         try (PrintWriter pw = new PrintWriter(csvOutputFile)) {
             dataLines.stream()
                 .map(csvExample::convertToCSV)
@@ -80,5 +80,6 @@ public class WriteCsvFileExampleUnitTest {
         }
 
         assertTrue(csvOutputFile.exists());
+        csvOutputFile.deleteOnExit();
     }
 }

core-java-io/src/test/resources/exampleOutput.csv

@@ -1,2 +0,0 @@
-John,Doe,38,Comment Data Another line of comment data
-Jane,"Doe, Jr.",19,"She said ""I'm being quoted"""