@Before
  public void setUp() {
    member1 = getVM(0);
    member2 = getVM(1);
    member3 = getVM(2);
    member4 = getVM(3);
  }
This Dunit test class have multiple tests to tests different validations of static partitioning
geode-core/src/distributedTest/java/org/apache/geode/internal/cache/partitioned/fixed/FixedPartitioningDUnitTest.java