Adding labels to split StopWatch feature - line separator

Author: edelgadoh

src/test/java/org/apache/commons/lang3/time/StopWatchTest.java

@@ -541,9 +541,9 @@ void testSplitsWithStringLabels() {
         final String updatedReport = report.replaceAll("4\\d\\d", "4**").replaceAll("2\\d\\d", "2**").replaceAll("1\\d\\d", "1**");
 
         assertEquals(
-                "\none 00:00:00.4**" +
-                "\ntwo 00:00:00.2**" +
-                "\nthree 00:00:00.1**",
+                System.lineSeparator() + "one 00:00:00.4**" +
+                System.lineSeparator() + "two 00:00:00.2**" +
+                System.lineSeparator() + "three 00:00:00.1**",
                 updatedReport
         );
     }
@@ -588,9 +588,9 @@ void testSplitsWithIntLabels() {
         final String updatedReport = report.replaceAll("4\\d\\d", "4**").replaceAll("2\\d\\d", "2**").replaceAll("1\\d\\d", "1**");
 
         assertEquals(
-                "\n1 00:00:00.4**" +
-                "\n2 00:00:00.2**" +
-                "\n3 00:00:00.1**",
+                System.lineSeparator() + "1 00:00:00.4**" +
+                System.lineSeparator() + "2 00:00:00.2**" +
+                System.lineSeparator() + "3 00:00:00.1**",
                 updatedReport
         );
     }
@@ -619,9 +619,8 @@ void testNanoSplitsWithLabel() {
         final String report = watch.getNanoReport();
         final String updatedReport = report.replaceAll(" 10\\d+", " 10*******").replaceAll(" 20\\d+", " 20*******");
 
-        assertEquals(
-                "\ncoding 10*******" +
-                "\neating 20*******",
+        assertEquals(System.lineSeparator() + "coding 10*******" +
+                System.lineSeparator() + "eating 20*******",
                 updatedReport
         );
     }