@Test
  public void testConstructors() {
    OpenShortDoubleHashMap map = new OpenShortDoubleHashMap();
    int[] capacity = new int[1];
    double[] minLoadFactor = new double[1];
    double[] maxLoadFactor = new double[1];

    map.getInternalFactors(capacity, minLoadFactor, maxLoadFactor);
    assertEquals(AbstractSet.defaultCapacity, capacity[0]);
    assertEquals(AbstractSet.defaultMaxLoadFactor, maxLoadFactor[0], 0.001);
    assertEquals(AbstractSet.defaultMinLoadFactor, minLoadFactor[0], 0.001);
    int prime = PrimeFinder.nextPrime(907);
    map = new OpenShortDoubleHashMap(prime);

    map.getInternalFactors(capacity, minLoadFactor, maxLoadFactor);
    assertEquals(prime, capacity[0]);
    assertEquals(AbstractSet.defaultMaxLoadFactor, maxLoadFactor[0], 0.001);
    assertEquals(AbstractSet.defaultMinLoadFactor, minLoadFactor[0], 0.001);

    map = new OpenShortDoubleHashMap(prime, 0.4, 0.8);
    map.getInternalFactors(capacity, minLoadFactor, maxLoadFactor);
    assertEquals(prime, capacity[0]);
    assertEquals(0.4, minLoadFactor[0], 0.001);
    assertEquals(0.8, maxLoadFactor[0], 0.001);
  }
  @Test
  public void testEnsureCapacity() {
    OpenShortDoubleHashMap map = new OpenShortDoubleHashMap();
    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]);
  }