Resolves #5037

Minor logging issue when a step or job completes instantly

Signed-off-by: janossch ([email protected])

Author: janossch

spring-batch-core/src/main/java/org/springframework/batch/core/observability/BatchMetrics.java

@@ -66,9 +66,12 @@ private BatchMetrics() {
 	 * @return A human readable duration
 	 */
 	public static String formatDuration(@Nullable Duration duration) {
-		if (duration == null || duration.isZero() || duration.isNegative()) {
+		if (duration == null || duration.isNegative()) {
 			return "";
 		}
+		if (duration.isZero()) {
+			return "0ms";
+		}
 		StringBuilder formattedDuration = new StringBuilder();
 		long hours = duration.toHours();
 		long minutes = duration.toMinutes();

spring-batch-core/src/test/java/org/springframework/batch/core/observability/BatchMetricsTests.java

@@ -93,7 +93,7 @@ void testFormatNegativeDuration() {
 	@Test
 	void testFormatZeroDuration() {
 		String formattedDuration = BatchMetrics.formatDuration(Duration.ZERO);
-		assertTrue(formattedDuration.isEmpty());
+		assertEquals("0ms", formattedDuration);
 	}
 
 	@Test