New unit test format

gradle/greeting-library-java/src/main/java/baeldunggreeter/Formatter.java

@@ -0,0 +1,14 @@
+package baeldunggreeter;
+
+import java.text.DateFormat;
+import java.text.SimpleDateFormat;
+import java.util.Date;
+
+public class Formatter {
+    public static String getFormattedDate() {
+        DateFormat dateFormat = new SimpleDateFormat(
+            "yyyy-MM-dd HH:mm:ss");
+        Date date = new Date();
+        return dateFormat.format(date);
+    }
+}

gradle/greeting-library-java/src/test/java/baeldunggreetertest/FormatterTest.java

@@ -0,0 +1,23 @@
+package baeldunggreetertest;
+
+import static org.junit.Assert.assertTrue;
+
+import java.util.Date;
+import java.util.regex.Pattern;
+
+import org.junit.Test;
+
+import baeldunggreeter.Formatter;
+
+public class FormatterTest {
+
+    @Test
+    public void testFormatter() {
+
+        String dateRegex1 = "^((19|20)\\d\\d)-(0?[1-9]|1[012])-(0?[1-9]|[12][0-9]|3[01]) ([2][0-3]|[0-1][0-9]|[1-9]):[0-5][0-9]:([0-5][0-9]|[6][0])$";
+        String dateString = Formatter.getFormattedDate();
+        assertTrue(Pattern
+            .matches(dateRegex1, dateString));
+
+    }
+}