ResourceCalculator { public abstract int compare( Resource clusterResource, Resource lhs, Resource rhs, boolean singleType);  abstract int compare(
      Resource clusterResource, Resource lhs, Resource rhs, boolean singleType); int compare(Resource clusterResource, Resource lhs, Resource rhs); static int divideAndCeil(int a, int b); static int divideAndCeil(int a, float b); static long divideAndCeil(long a, long b); static long divideAndCeil(long a, float b); static float divideSafelyAsFloat(long lhs, long rhs); static int roundUp(int a, int b); static long roundUp(long a, long b); static long roundDown(long a, long b); static int roundDown(int a, int b); abstract long computeAvailableContainers(
      Resource available, Resource required); abstract Resource multiplyAndNormalizeUp(
      Resource r, double by, Resource stepFactor); abstract Resource multiplyAndNormalizeUp(
      Resource r, double[] by, Resource stepFactor); abstract Resource multiplyAndNormalizeDown(
      Resource r, double by, Resource stepFactor); abstract Resource normalize(Resource r, Resource minimumResource,
      Resource maximumResource, Resource stepFactor); abstract Resource roundUp(Resource r, Resource stepFactor); abstract Resource roundDown(Resource r, Resource stepFactor); abstract float divide(
      Resource clusterResource, Resource numerator, Resource denominator); abstract boolean isInvalidDivisor(Resource r); abstract float ratio(Resource a, Resource b); abstract Resource divideAndCeil(Resource numerator, int denominator); abstract Resource divideAndCeil(Resource numerator, float denominator); abstract boolean fitsIn(Resource smaller, Resource bigger); abstract boolean isAnyMajorResourceZeroOrNegative(Resource resource); abstract Resource normalizeDown(Resource r, Resource stepFactor); abstract boolean isAnyMajorResourceAboveZero(Resource resource); abstract Set<String> getInsufficientResourceNames(Resource required,
      Resource available);  }
@Test public void testCompare() { setupExtraResource(); Resource cluster = newResource(4L, 4, 4); assertComparison(cluster, newResource(1, 1, 1), newResource(1, 1, 1), 0); assertComparison(cluster, newResource(0, 0, 0), newResource(0, 0, 0), 0); assertComparison(cluster, newResource(2, 2, 2), newResource(1, 1, 1), 1); assertComparison(cluster, newResource(2, 2, 2), newResource(0, 0, 0), 1); if (resourceCalculator instanceof DefaultResourceCalculator) { testCompareDefault(cluster); } else if (resourceCalculator instanceof DominantResourceCalculator) { testCompareDominant(cluster); testCompareDominantZeroValueResource(); } }