@Test
  public void noopRollingSplit() throws Exception {
    final List<byte[]> expectedBounds = new ArrayList<>(1);
    expectedBounds.add(ArrayUtils.EMPTY_BYTE_ARRAY);
    rollingSplitAndVerify(TableName.valueOf(TestRegionSplitter.class.getSimpleName()),
      "UniformSplit", expectedBounds);
  }
Creates a pre-split table with expectedBounds.size()+1 regions, then verifies that the region
boundaries are the same as the expected region boundaries in expectedBounds.
@throws Various junit assertions
hbase-server/src/test/java/org/apache/hadoop/hbase/util/TestRegionSplitter.java