@Test
  public void txFailureIncrementsTxFailureChanges() {
    cachePerfStats.txFailure(1, 1, 1);

    assertThat(statistics.getLong(txFailureChangesId)).isEqualTo(1);
  }
Characterization test: Note that the only way to increment {@code txFailureChanges} is to
invoke {@code txFailure}.
geode-core/src/test/java/org/apache/geode/internal/cache/CachePerfStatsTest.java