chore: flaky test

Author: surbhigarg92

google-cloud-spanner/src/test/java/com/google/cloud/spanner/OpenTelemetrySpanTest.java

@@ -403,10 +403,10 @@ public void multiUse() {
   }
 
   @Test
-  public void transactionRunner() {
+  public void transactionRunner() throws InterruptedException {
     TransactionRunner runner = client.readWriteTransaction();
     runner.run(transaction -> transaction.executeUpdate(UPDATE_STATEMENT));
-
+    Thread.sleep(50);
     List<String> actualSpanItems = new ArrayList<>();
     spanExporter
         .getFinishedSpanItems()
@@ -551,13 +551,13 @@ private void verifyRequestEvents(SpanData spanItem, List<String> expectedEvents,
         spanItem.getEvents().stream().map(EventData::getName).collect(Collectors.toList());
     assertEquals(eventCount, spanItem.getEvents().size());
     assertEquals(
-        eventNames.stream().distinct().sorted().collect(Collectors.toList()),
-        expectedEvents.stream().sorted().collect(Collectors.toList()));
+        expectedEvents.stream().sorted().collect(Collectors.toList()),
+        eventNames.stream().distinct().sorted().collect(Collectors.toList()));
   }
 
   private static void verifySpans(List<String> actualSpanItems, List<String> expectedSpansItems) {
     assertEquals(
-        actualSpanItems.stream().distinct().sorted().collect(Collectors.toList()),
-        expectedSpansItems.stream().sorted().collect(Collectors.toList()));
+        expectedSpansItems.stream().sorted().collect(Collectors.toList()),
+        actualSpanItems.stream().distinct().sorted().collect(Collectors.toList()));
   }
 }