@Test
  public void testMinLong() throws IOException {
    InternalDataSerializer.writeUnsignedVL(0x7fffffffL + 1, createDOS());
    assertEquals(0x7fffffffL + 1, InternalDataSerializer.readUnsignedVL(createDIS()));
  }
Test for the new variable length format

TODO these tests need some work. I don't think they really represent edge cases for this variable
length value.
geode-core/src/test/java/org/apache/geode/internal/cache/VLJUnitTest.java