@Test
  public void testEnsureCapacity() {
    OpenDoubleObjectHashMap<TestClass> map = new OpenDoubleObjectHashMap<TestClass>();
    int prime = PrimeFinder.nextPrime(907);

    map.ensureCapacity(prime);
    int[] capacity = new int[1];
    double[] minLoadFactor = new double[1];
    double[] maxLoadFactor = new double[1];

    map.getInternalFactors(capacity, minLoadFactor, maxLoadFactor);
    assertEquals(prime, capacity[0]);
  }