@Test
  public void testDivideByLong() {
    final MemorySize memory = new MemorySize(100L);
    assertThat(memory.divide(23), is(new MemorySize(4L)));
  }
Tests for the {@link MemorySize} class.
amoro-common/src/test/java/org/apache/amoro/utils/MemorySizeTest.java