static void ktest(Map s, int size, Integer[] key) {
    timer.start("ContainsKey            ", size);
    Set ks = s.keySet();
    int sum = 0;
    for (int i = 0; i < size; i++) {
      if (ks.contains(key[i])) {
        ++sum;
      }
    }
    timer.finish();
    reallyAssert(sum == size);
  }
@test
@synopsis Times and checks basic map operations
geode-core/src/integrationTest/java/org/apache/geode/internal/util/concurrent/cm/IntMapCheckJUnitTest.java