Cartesian4Spec.js

defineSuite([
        'Core/Cartesian4',
        'Core/Color',
        'Core/Math',
        'Specs/createPackableArraySpecs',
        'Specs/createPackableSpecs'
    ], function(
        Cartesian4,
        Color,
        CesiumMath,
        createPackableArraySpecs,
        createPackableSpecs) {
    'use strict';

    it('construct with default values', function() {
        var cartesian = new Cartesian4();
        expect(cartesian.x).toEqual(0.0);
        expect(cartesian.y).toEqual(0.0);
        expect(cartesian.z).toEqual(0.0);
        expect(cartesian.w).toEqual(0.0);
    });

    it('construct with all values', function() {
        var cartesian = new Cartesian4(1.0, 2.0, 3.0, 4.0);
        expect(cartesian.x).toEqual(1.0);
        expect(cartesian.y).toEqual(2.0);
        expect(cartesian.z).toEqual(3.0);
        expect(cartesian.w).toEqual(4.0);
    });

    it('fromArray creates a Cartesian4', function() {
        var cartesian = Cartesian4.fromArray([1.0, 2.0, 3.0, 4.0]);
        expect(cartesian).toEqual(new Cartesian4(1.0, 2.0, 3.0, 4.0));
    });

    it('fromArray with an offset creates a Cartesian4', function() {
        var cartesian = Cartesian4.fromArray([0.0, 1.0, 2.0, 3.0, 4.0, 0.0], 1);
        expect(cartesian).toEqual(new Cartesian4(1.0, 2.0, 3.0, 4.0));
    });

    it('fromArray creates a Cartesian4 with a result parameter', function() {
        var cartesian = new Cartesian4();
        var result = Cartesian4.fromArray([1.0, 2.0, 3.0, 4.0], 0, cartesian);
        expect(result).toBe(cartesian);
        expect(result).toEqual(new Cartesian4(1.0, 2.0, 3.0, 4.0));
    });

    it('fromArray throws without values', function() {
        expect(function() {
            Cartesian4.fromArray();
        }).toThrowDeveloperError();
    });

    it('fromElements returns a cartesian4 with corrrect coordinates', function(){
        var cartesian4 = Cartesian4.fromElements(2, 2, 4, 7);
        var expectedResult = new Cartesian4(2, 2, 4, 7);
        expect(cartesian4).toEqual(expectedResult);
    });

    it('fromElements result param returns cartesian4 with correct coordinates', function(){
        var cartesian4 = new Cartesian4();
        Cartesian4.fromElements(2, 2, 4, 7, cartesian4);
        var expectedResult = new Cartesian4(2, 2, 4, 7);
        expect(cartesian4).toEqual(expectedResult);
    });

    it('fromColor returns a cartesian4 with corrrect coordinates', function(){
        var cartesian4 = Cartesian4.fromColor(new Color(1.0, 2.0, 3.0, 4.0));
        expect(cartesian4).toEqual(new Cartesian4(1.0, 2.0, 3.0, 4.0));
    });

    it('fromColor result param returns cartesian4 with correct coordinates', function(){
        var cartesian4 = new Cartesian4();
        var result = Cartesian4.fromColor(new Color(1.0, 2.0, 3.0, 4.0), cartesian4);
        expect(cartesian4).toBe(result);
        expect(cartesian4).toEqual(new Cartesian4(1.0, 2.0, 3.0, 4.0));
    });

    it('fromColor throws without color', function() {
        expect(function() {
            Cartesian4.fromColor();
        }).toThrowDeveloperError();
    });

    it('clone without a result parameter', function() {
        var cartesian = new Cartesian4(1.0, 2.0, 3.0, 4.0);
        var result = Cartesian4.clone(cartesian, new Cartesian4());
        expect(cartesian).not.toBe(result);
        expect(cartesian).toEqual(result);
    });

    it('clone with a result parameter', function() {
        var cartesian = new Cartesian4(1.0, 2.0, 3.0, 4.0);
        var result = new Cartesian4();
        var returnedResult = Cartesian4.clone(cartesian, result);
        expect(cartesian).not.toBe(result);
        expect(result).toBe(returnedResult);
        expect(cartesian).toEqual(result);
    });

    it('clone works with a result parameter that is an input parameter', function() {
        var cartesian = new Cartesian4(1.0, 2.0, 3.0, 4.0);
        var returnedResult = Cartesian4.clone(cartesian, cartesian);
        expect(cartesian).toBe(returnedResult);
    });

    it('maximumComponent works when X is greater', function() {
        var cartesian = new Cartesian4(2.0, 1.0, 0.0, -1.0);
        expect(Cartesian4.maximumComponent(cartesian)).toEqual(cartesian.x);
    });

    it('maximumComponent works when Y is greater', function() {
        var cartesian = new Cartesian4(1.0, 2.0, 0.0, -1.0);
        expect(Cartesian4.maximumComponent(cartesian)).toEqual(cartesian.y);
    });

    it('maximumComponent works when Z is greater', function() {
        var cartesian = new Cartesian4(1.0, 2.0, 3.0, -1.0);
        expect(Cartesian4.maximumComponent(cartesian)).toEqual(cartesian.z);
    });

    it('maximumComponent works when W is greater', function() {
        var cartesian = new Cartesian4(1.0, 2.0, 3.0, 4.0);
        expect(Cartesian4.maximumComponent(cartesian)).toEqual(cartesian.w);
    });

    it('minimumComponent works when X is lesser', function() {
        var cartesian = new Cartesian4(1.0, 2.0, 3.0, 4.0);
        expect(Cartesian4.minimumComponent(cartesian)).toEqual(cartesian.x);
    });

    it('minimumComponent works when Y is lesser', function() {
        var cartesian = new Cartesian4(2.0, 1.0, 3.0, 4.0);
        expect(Cartesian4.minimumComponent(cartesian)).toEqual(cartesian.y);
    });

    it('minimumComponent works when Z is lesser', function() {
        var cartesian = new Cartesian4(2.0, 1.0, 0.0, 4.0);
        expect(Cartesian4.minimumComponent(cartesian)).toEqual(cartesian.z);
    });

    it('minimumComponent works when W is lesser', function() {
        var cartesian = new Cartesian4(2.0, 1.0, 0.0, -1.0);
        expect(Cartesian4.minimumComponent(cartesian)).toEqual(cartesian.w);
    });

    it('minimumByComponent without a result parameter', function() {
        var first = new Cartesian4(2.0, 0.0, 0.0, 0.0);
        var second = new Cartesian4(1.0, 0.0, 0.0, 0.0);
        var result = new Cartesian4();
        var expected = new Cartesian4(1.0, 0.0, 0.0, 0.0);
        expect(Cartesian4.minimumByComponent(first, second, result)).toEqual(expected);
        first = new Cartesian4(1.0, 0.0, 0.0, 0.0);
        second = new Cartesian4(2.0, 0.0, 0.0, 0.0);
        expected = new Cartesian4(1.0, 0.0, 0.0, 0.0);
        expect(Cartesian4.minimumByComponent(first, second, result)).toEqual(expected);
        first = new Cartesian4(2.0, -15.0, 0.0, 0.0);
        second = new Cartesian4(1.0, -20.0, 0.0, 0.0);
        expected = new Cartesian4(1.0, -20.0, 0.0, 0.0);
        expect(Cartesian4.minimumByComponent(first, second, result)).toEqual(expected);
        first = new Cartesian4(2.0, -20.0, 0.0, 0.0);
        second = new Cartesian4(1.0, -15.0, 0.0, 0.0);
        expected = new Cartesian4(1.0, -20.0, 0.0, 0.0);
        expect(Cartesian4.minimumByComponent(first, second, result)).toEqual(expected);
        first = new Cartesian4(2.0, -15.0, 26.4, 0.0);
        second = new Cartesian4(1.0, -20.0, 26.5, 0.0);
        expected = new Cartesian4(1.0, -20.0, 26.4, 0.0);
        expect(Cartesian4.minimumByComponent(first, second, result)).toEqual(expected);
        first = new Cartesian4(2.0, -15.0, 26.5, 0.0);
        second = new Cartesian4(1.0, -20.0, 26.4, 0.0);
        expected = new Cartesian4(1.0, -20.0, 26.4, 0.0);
        expect(Cartesian4.minimumByComponent(first, second, result)).toEqual(expected);
        first = new Cartesian4(2.0, -15.0, 26.4, -450.0);
        second = new Cartesian4(1.0, -20.0, 26.5, 450.0);
        expected = new Cartesian4(1.0, -20.0, 26.4, -450.0);
        expect(Cartesian4.minimumByComponent(first, second, result)).toEqual(expected);
        first = new Cartesian4(2.0, -15.0, 26.5, 450.0);
        second = new Cartesian4(1.0, -20.0, 26.4, -450.0);
        expected = new Cartesian4(1.0, -20.0, 26.4, -450.0);
        expect(Cartesian4.minimumByComponent(first, second, result)).toEqual(expected);
    });

    it('minimumByComponent with a result parameter', function() {
        var first = new Cartesian4(2.0, 0.0, 0.0, 0.0);
        var second = new Cartesian4(1.0, 0.0, 0.0, 0.0);
        var result = new Cartesian4();
        var returnedResult = Cartesian4.minimumByComponent(first, second, result);
        expect(returnedResult).toBe(result);
        expect(returnedResult).toEqual(result);
    });

    it('minimumByComponent with a result parameter that is an input parameter', function() {
        var first = new Cartesian4(2.0, 0.0, 0.0, 0.0);
        var second = new Cartesian4(1.0, 0.0, 0.0, 0.0);
        var result = new Cartesian4(1.0, 0.0, 0.0, 0.0);
        expect(Cartesian4.minimumByComponent(first, second, first)).toEqual(result);
        first.x = 1.0;
        second.x = 2.0;
        expect(Cartesian4.minimumByComponent(first, second, first)).toEqual(result);
    });

    it('minimumByComponent with a result parameter that is an input parameter', function() {
        var first = new Cartesian4(2.0, 0.0, 0.0, 0.0);
        var second = new Cartesian4(1.0, 0.0, 0.0, 0.0);
        var result = new Cartesian4(1.0, 0.0, 0.0, 0.0);
        expect(Cartesian4.minimumByComponent(first, second, second)).toEqual(result);
        first.x = 1.0;
        second.x = 2.0;
        expect(Cartesian4.minimumByComponent(first, second, second)).toEqual(result);
    });

    it('minimumByComponent throws without first', function() {
        expect(function() {
            Cartesian4.minimumByComponent();
        }).toThrowDeveloperError();
    });

    it('minimumByComponent throws without second', function() {
        expect(function() {
            Cartesian4.minimumByComponent(new Cartesian4());
        }).toThrowDeveloperError();
    });

    it('minimumByComponent works when first\'s or second\'s X is lesser', function() {
        var first = new Cartesian4(2.0, 0.0, 0.0, 0.0);
        var second = new Cartesian4(1.0, 0.0, 0.0, 0.0);
        var result = new Cartesian4(1.0, 0.0, 0.0, 0.0);
        var r = new Cartesian4();
        expect(Cartesian4.minimumByComponent(first, second, r)).toEqual(result);
        second.x = 3.0;
        result.x = 2.0;
        expect(Cartesian4.minimumByComponent(first, second,r )).toEqual(result);
    });

    it('minimumByComponent works when first\'s or second\'s Y is lesser', function() {
        var first = new Cartesian4(0.0, 2.0, 0.0, 0.0);
        var second = new Cartesian4(0.0, 1.0, 0.0, 0.0);
        var result = new Cartesian4(0.0, 1.0, 0.0, 0.0);
        var r = new Cartesian4();
        expect(Cartesian4.minimumByComponent(first, second, r)).toEqual(result);
        second.y = 3.0;
        result.y = 2.0;
        expect(Cartesian4.minimumByComponent(first, second, r)).toEqual(result);
    });

    it('minimumByComponent works when first\'s or second\'s Z is lesser', function() {
        var first = new Cartesian4(0.0, 0.0, 2.0, 0.0);
        var second = new Cartesian4(0.0, 0.0, 1.0, 0.0);
        var result = new Cartesian4(0.0, 0.0, 1.0, 0.0);
        var r = new Cartesian4();
        expect(Cartesian4.minimumByComponent(first, second, r)).toEqual(result);
        second.z = 3.0;
        result.z = 2.0;
        expect(Cartesian4.minimumByComponent(first, second, r)).toEqual(result);
    });

    it('minimumByComponent works when first\'s or second\'s W is lesser', function() {
        var first = new Cartesian4(0.0, 0.0, 0.0, 2.0);
        var second = new Cartesian4(0.0, 0.0, 0.0, 1.0);
        var result = new Cartesian4(0.0, 0.0, 0.0, 1.0);
        var r = new Cartesian4();
        expect(Cartesian4.minimumByComponent(first, second, r)).toEqual(result);
        second.w = 3.0;
        result.w = 2.0;
        expect(Cartesian4.minimumByComponent(first, second, r)).toEqual(result);
    });

    it('maximumByComponent', function() {
        var first = new Cartesian4(2.0, 0.0, 0.0, 0.0);
        var second = new Cartesian4(1.0, 0.0, 0.0, 0.0);
        var result = new Cartesian4();
        var expected = new Cartesian4(2.0, 0.0, 0.0, 0.0);
        expect(Cartesian4.maximumByComponent(first, second, result)).toEqual(expected);
        first = new Cartesian4(1.0, 0.0, 0.0, 0.0);
        second = new Cartesian4(2.0, 0.0, 0.0, 0.0);
        expected = new Cartesian4(2.0, 0.0, 0.0, 0.0);
        expect(Cartesian4.maximumByComponent(first, second, result)).toEqual(expected);
        first = new Cartesian4(2.0, -15.0, 0.0, 0.0);
        second = new Cartesian4(1.0, -20.0, 0.0, 0.0);
        expected = new Cartesian4(2.0, -15.0, 0.0, 0.0);
        expect(Cartesian4.maximumByComponent(first, second, result)).toEqual(expected);
        first = new Cartesian4(2.0, -20.0, 0.0, 0.0);
        second = new Cartesian4(1.0, -15.0, 0.0, 0.0);
        expected = new Cartesian4(2.0, -15.0, 0.0, 0.0);
        expect(Cartesian4.maximumByComponent(first, second, result)).toEqual(expected);
        first = new Cartesian4(2.0, -15.0, 26.4, 0.0);
        second = new Cartesian4(1.0, -20.0, 26.5, 0.0);
        expected = new Cartesian4(2.0, -15.0, 26.5, 0.0);
        expect(Cartesian4.maximumByComponent(first, second, result)).toEqual(expected);
        first = new Cartesian4(2.0, -15.0, 26.5, 0.0);
        second = new Cartesian4(1.0, -20.0, 26.4, 0.0);
        expected = new Cartesian4(2.0, -15.0, 26.5, 0.0);
        expect(Cartesian4.maximumByComponent(first, second, result)).toEqual(expected);
        first = new Cartesian4(2.0, -15.0, 26.5, 450.0);
        second = new Cartesian4(1.0, -20.0, 26.4, -450.0);
        expected = new Cartesian4(2.0, -15.0, 26.5, 450.0);
        expect(Cartesian4.maximumByComponent(first, second, result)).toEqual(expected);
        first = new Cartesian4(2.0, -15.0, 26.5, -450.0);
        second = new Cartesian4(1.0, -20.0, 26.4, 450.0);
        expected = new Cartesian4(2.0, -15.0, 26.5, 450.0);
        expect(Cartesian4.maximumByComponent(first, second, result)).toEqual(expected);
    });

    it('maximumByComponent with a result parameter that is an input parameter', function() {
        var first = new Cartesian4(2.0, 0.0, 0.0, 0.0);
        var second = new Cartesian4(1.0, 0.0, 0.0, 0.0);
        var result = new Cartesian4(2.0, 0.0, 0.0, 0.0);
        expect(Cartesian4.maximumByComponent(first, second, first)).toEqual(result);
        first.x = 1.0;
        second.x = 2.0;
        expect(Cartesian4.maximumByComponent(first, second, first)).toEqual(result);
    });

    it('maximumByComponent with a result parameter that is an input parameter', function() {
        var first = new Cartesian4(2.0, 0.0, 0.0, 0.0);
        var second = new Cartesian4(1.0, 0.0, 0.0, 0.0);
        var result = new Cartesian4(2.0, 0.0, 0.0, 0.0);
        expect(Cartesian4.maximumByComponent(first, second, second)).toEqual(result);
        first.x = 1.0;
        second.x = 2.0;
        expect(Cartesian4.maximumByComponent(first, second, second)).toEqual(result);
    });

    it('maximumByComponent throws without first', function() {
        expect(function() {
            Cartesian4.maximumByComponent();
        }).toThrowDeveloperError();
    });

    it('maximumByComponent throws without second', function() {
        expect(function() {
            Cartesian4.maximumByComponent(new Cartesian4());
        }).toThrowDeveloperError();
    });

    it('maximumByComponent works when first\'s or second\'s X is greater', function() {
        var first = new Cartesian4(2.0, 0.0, 0.0, 0.0);
        var second = new Cartesian4(1.0, 0.0, 0.0, 0.0);
        var result = new Cartesian4(2.0, 0.0, 0.0, 0.0);
        var r = new Cartesian4();
        expect(Cartesian4.maximumByComponent(first, second, r)).toEqual(result);
        second.x = 3.0;
        result.x = 3.0;
        expect(Cartesian4.maximumByComponent(first, second, r)).toEqual(result);
    });

    it('maximumByComponent works when first\'s or second\'s Y is greater', function() {
        var first = new Cartesian4(0.0, 2.0, 0.0, 0.0);
        var second = new Cartesian4(0.0, 1.0, 0.0, 0.0);
        var result = new Cartesian4(0.0, 2.0, 0.0, 0.0);
        var r = new Cartesian4();
        expect(Cartesian4.maximumByComponent(first, second, r)).toEqual(result);
        second.y = 3.0;
        result.y = 3.0;
        expect(Cartesian4.maximumByComponent(first, second, r)).toEqual(result);
    });

    it('maximumByComponent works when first\'s or second\'s Z is greater', function() {
        var first = new Cartesian4(0.0, 0.0, 2.0, 0.0);
        var second = new Cartesian4(0.0, 0.0, 1.0, 0.0);
        var result = new Cartesian4(0.0, 0.0, 2.0, 0.0);
        var r = new Cartesian4();
        expect(Cartesian4.maximumByComponent(first, second, r)).toEqual(result);
        second.z = 3.0;
        result.z = 3.0;
        expect(Cartesian4.maximumByComponent(first, second, r)).toEqual(result);
    });

    it('maximumByComponent works when first\'s or second\'s W is greater', function() {
        var first = new Cartesian4(0.0, 0.0, 0.0, 2.0);
        var second = new Cartesian4(0.0, 0.0, 0.0, 1.0);
        var result = new Cartesian4(0.0, 0.0, 0.0, 2.0);
        var r = new Cartesian4();
        expect(Cartesian4.maximumByComponent(first, second, r)).toEqual(result);
        second.w = 3.0;
        result.w = 3.0;
        expect(Cartesian4.maximumByComponent(first, second, r)).toEqual(result);
    });

    it('magnitudeSquared', function() {
        var cartesian = new Cartesian4(3.0, 4.0, 5.0, 6.0);
        expect(Cartesian4.magnitudeSquared(cartesian)).toEqual(86.0);
    });

    it('magnitude', function() {
        var cartesian = new Cartesian4(3.0, 4.0, 5.0, 6.0);
        expect(Cartesian4.magnitude(cartesian)).toEqual(Math.sqrt(86.0));
    });

    it('distance', function() {
        var distance = Cartesian4.distance(new Cartesian4(1.0, 0.0, 0.0, 0.0), new Cartesian4(2.0, 0.0, 0.0, 0.0));
        expect(distance).toEqual(1.0);
    });

    it('distance throws without left', function() {
        expect(function() {
            Cartesian4.distance();
        }).toThrowDeveloperError();
    });

    it('distance throws without right', function() {
        expect(function() {
            Cartesian4.distance(Cartesian4.UNIT_X);
        }).toThrowDeveloperError();
    });

    it('distanceSquared', function() {
        var distanceSquared = Cartesian4.distanceSquared(new Cartesian4(1.0, 0.0, 0.0, 0.0), new Cartesian4(3.0, 0.0, 0.0, 0.0));
        expect(distanceSquared).toEqual(4.0);
    });

    it('distanceSquared throws without left', function() {
        expect(function() {
            Cartesian4.distanceSquared();
        }).toThrowDeveloperError();
    });

    it('distanceSquared throws without right', function() {
        expect(function() {
            Cartesian4.distanceSquared(Cartesian4.UNIT_X);
        }).toThrowDeveloperError();
    });

    it('normalize works with a result parameter', function() {
        var cartesian = new Cartesian4(2.0, 0.0, 0.0, 0.0);
        var expectedResult = new Cartesian4(1.0, 0.0, 0.0, 0.0);
        var result = new Cartesian4();
        var returnedResult = Cartesian4.normalize(cartesian, result);
        expect(result).toBe(returnedResult);
        expect(result).toEqual(expectedResult);
    });

    it('normalize works with a result parameter that is an input parameter', function() {
        var cartesian = new Cartesian4(2.0, 0.0, 0.0, 0.0);
        var expectedResult = new Cartesian4(1.0, 0.0, 0.0, 0.0);
        var returnedResult = Cartesian4.normalize(cartesian, cartesian);
        expect(cartesian).toBe(returnedResult);
        expect(cartesian).toEqual(expectedResult);
    });

    it('normalize throws with zero vector', function() {
        expect(function() {
            Cartesian4.normalize(Cartesian4.ZERO, new Cartesian4());
        }).toThrowDeveloperError();
    });

    it('multiplyComponents works with a result parameter', function() {
        var left = new Cartesian4(2.0, 3.0, 6.0, 8.0);
        var right = new Cartesian4(4.0, 5.0, 7.0, 9.0);
        var result = new Cartesian4();
        var expectedResult = new Cartesian4(8.0, 15.0, 42.0, 72.0);
        var returnedResult = Cartesian4.multiplyComponents(left, right, result);
        expect(result).toBe(returnedResult);
        expect(result).toEqual(expectedResult);
    });

    it('multiplyComponents works with a result parameter that is an input parameter', function() {
        var left = new Cartesian4(2.0, 3.0, 6.0, 8.0);
        var right = new Cartesian4(4.0, 5.0, 7.0, 9.0);
        var expectedResult = new Cartesian4(8.0, 15.0, 42.0, 72.0);
        var returnedResult = Cartesian4.multiplyComponents(left, right, left);
        expect(left).toBe(returnedResult);
        expect(left).toEqual(expectedResult);
    });

    it('divideComponents works with a result parameter', function() {
        var left = new Cartesian4(2.0, 3.0, 6.0, 15.0);
        var right = new Cartesian4(4.0, 5.0, 8.0, 2.0);
        var result = new Cartesian4();
        var expectedResult = new Cartesian4(0.5, 0.6, 0.75, 7.5);
        var returnedResult = Cartesian4.divideComponents(left, right, result);
        expect(result).toBe(returnedResult);
        expect(result).toEqual(expectedResult);
    });

    it('divideComponents works with a result parameter that is an input parameter', function() {
        var left = new Cartesian4(2.0, 3.0, 6.0, 15.0);
        var right = new Cartesian4(4.0, 5.0, 8.0, 2.0);
        var expectedResult = new Cartesian4(0.5, 0.6, 0.75, 7.5);
        var returnedResult = Cartesian4.divideComponents(left, right, left);
        expect(left).toBe(returnedResult);
        expect(left).toEqual(expectedResult);
    });

    it('dot', function() {
        var left = new Cartesian4(2.0, 3.0, 6.0, 8.0);
        var right = new Cartesian4(4.0, 5.0, 7.0, 9.0);
        var expectedResult = 137.0;
        var result = Cartesian4.dot(left, right);
        expect(result).toEqual(expectedResult);
    });

    it('add works with a result parameter', function() {
        var left = new Cartesian4(2.0, 3.0, 6.0, 8.0);
        var right = new Cartesian4(4.0, 5.0, 7.0, 9.0);
        var result = new Cartesian4();
        var expectedResult = new Cartesian4(6.0, 8.0, 13.0,  17.0);
        var returnedResult = Cartesian4.add(left, right, result);
        expect(result).toBe(returnedResult);
        expect(result).toEqual(expectedResult);
    });

    it('add works with a result parameter that is an input parameter', function() {
        var left = new Cartesian4(2.0, 3.0, 6.0, 8.0);
        var right = new Cartesian4(4.0, 5.0, 7.0, 9.0);
        var expectedResult = new Cartesian4(6.0, 8.0, 13.0, 17.0);
        var returnedResult = Cartesian4.add(left, right, left);
        expect(left).toBe(returnedResult);
        expect(left).toEqual(expectedResult);
    });

    it('subtract works with a result parameter', function() {
        var left = new Cartesian4(2.0, 3.0, 4.0, 8.0);
        var right = new Cartesian4(1.0, 5.0, 7.0, 9.0);
        var result = new Cartesian4();
        var expectedResult = new Cartesian4(1.0, -2.0, -3.0, -1.0);
        var returnedResult = Cartesian4.subtract(left, right, result);
        expect(result).toBe(returnedResult);
        expect(result).toEqual(expectedResult);
    });

    it('subtract works with this result parameter', function() {
        var left = new Cartesian4(2.0, 3.0, 4.0, 8.0);
        var right = new Cartesian4(1.0, 5.0, 7.0, 9.0);
        var expectedResult = new Cartesian4(1.0, -2.0, -3.0, -1.0);
        var returnedResult = Cartesian4.subtract(left, right, left);
        expect(returnedResult).toBe(left);
        expect(left).toEqual(expectedResult);
    });

    it('multiplyByScalar with a result parameter', function() {
        var cartesian = new Cartesian4(1.0, 2.0, 3.0, 4.0);
        var result = new Cartesian4();
        var scalar = 2;
        var expectedResult = new Cartesian4(2.0, 4.0, 6.0, 8.0);
        var returnedResult = Cartesian4.multiplyByScalar(cartesian, scalar, result);
        expect(result).toBe(returnedResult);
        expect(result).toEqual(expectedResult);
    });

    it('multiplyByScalar with a result parameter that is an input parameter', function() {
        var cartesian = new Cartesian4(1.0, 2.0, 3.0, 4.0);
        var scalar = 2;
        var expectedResult = new Cartesian4(2.0, 4.0, 6.0, 8.0);
        var returnedResult = Cartesian4.multiplyByScalar(cartesian, scalar, cartesian);
        expect(cartesian).toBe(returnedResult);
        expect(cartesian).toEqual(expectedResult);
    });

    it('divideByScalar with a result parameter', function() {
        var cartesian = new Cartesian4(1.0, 2.0, 3.0, 4.0);
        var result = new Cartesian4();
        var scalar = 2;
        var expectedResult = new Cartesian4(0.5, 1.0, 1.5, 2.0);
        var returnedResult = Cartesian4.divideByScalar(cartesian, scalar, result);
        expect(result).toBe(returnedResult);
        expect(result).toEqual(expectedResult);
    });

    it('divideByScalar with a result parameter that is an input parameter', function() {
        var cartesian = new Cartesian4(1.0, 2.0, 3.0, 4.0);
        var scalar = 2;
        var expectedResult = new Cartesian4(0.5, 1.0, 1.5, 2.0);
        var returnedResult = Cartesian4.divideByScalar(cartesian, scalar, cartesian);
        expect(cartesian).toBe(returnedResult);
        expect(cartesian).toEqual(expectedResult);
    });

    it('negate with a result parameter', function() {
        var cartesian = new Cartesian4(1.0, -2.0, -5.0, 4.0);
        var result = new Cartesian4();
        var expectedResult = new Cartesian4(-1.0, 2.0, 5.0, -4.0);
        var returnedResult = Cartesian4.negate(cartesian, result);
        expect(result).toBe(returnedResult);
        expect(result).toEqual(expectedResult);
    });

    it('negate with a result parameter that is an input parameter', function() {
        var cartesian = new Cartesian4(1.0, -2.0, -5.0);
        var expectedResult = new Cartesian4(-1.0, 2.0, 5.0);
        var returnedResult = Cartesian4.negate(cartesian, cartesian);
        expect(cartesian).toBe(returnedResult);
        expect(cartesian).toEqual(expectedResult);
    });

    it('abs with a result parameter', function() {
        var cartesian = new Cartesian4(1.0, -2.0, -4.0, -3.0);
        var result = new Cartesian4();
        var expectedResult = new Cartesian4(1.0, 2.0, 4.0, 3.0);
        var returnedResult = Cartesian4.abs(cartesian, result);
        expect(result).toBe(returnedResult);
        expect(result).toEqual(expectedResult);
    });

    it('abs with a result parameter that is an input parameter', function() {
        var cartesian = new Cartesian4(1.0, -2.0, -4.0, -3.0);
        var expectedResult = new Cartesian4(1.0, 2.0, 4.0, 3.0);
        var returnedResult = Cartesian4.abs(cartesian, cartesian);
        expect(cartesian).toBe(returnedResult);
        expect(cartesian).toEqual(expectedResult);
    });

    it('lerp works with a result parameter that is an input parameter', function() {
        var start = new Cartesian4(4.0, 8.0, 10.0, 20.0);
        var end = new Cartesian4(8.0, 20.0, 20.0, 30.0);
        var t = 0.25;
        var expectedResult = new Cartesian4(5.0, 11.0, 12.5, 22.5);
        var returnedResult = Cartesian4.lerp(start, end, t, start);
        expect(start).toBe(returnedResult);
        expect(start).toEqual(expectedResult);
    });

    it('lerp extrapolate forward', function() {
        var start = new Cartesian4(4.0, 8.0, 10.0, 20.0);
        var end = new Cartesian4(8.0, 20.0, 20.0, 30.0);
        var t = 2.0;
        var result = new Cartesian4();
        var expectedResult = new Cartesian4(12.0, 32.0, 30.0, 40.0);
        result = Cartesian4.lerp(start, end, t, result);
        expect(result).toEqual(expectedResult);
    });

    it('lerp extrapolate backward', function() {
        var start = new Cartesian4(4.0, 8.0, 10.0, 20.0);
        var end = new Cartesian4(8.0, 20.0, 20.0, 30.0);
        var t = -1.0;
        var result = new Cartesian4();
        var expectedResult = new Cartesian4(0.0, -4.0, 0.0, 10.0);
        result = Cartesian4.lerp(start, end, t, result);
        expect(result).toEqual(expectedResult);
    });

    it('most orthogonal angle is x', function() {
        var v = new Cartesian4(0.0, 1.0, 2.0, 3.0);
        expect(Cartesian4.mostOrthogonalAxis(v, new Cartesian4())).toEqual(Cartesian4.UNIT_X);
    });

    it('most orthogonal angle is y', function() {
        var v = new Cartesian4(1.0, 0.0, 2.0, 3.0);
        expect(Cartesian4.mostOrthogonalAxis(v, new Cartesian4())).toEqual(Cartesian4.UNIT_Y);
    });

    it('most orthogonal angle is z', function() {
        var v = new Cartesian4(2.0, 3.0, 0.0, 1.0);
        expect(Cartesian4.mostOrthogonalAxis(v, new Cartesian4())).toEqual(Cartesian4.UNIT_Z);

        v = new Cartesian4(3.0, 2.0, 0.0, 1.0);
        expect(Cartesian4.mostOrthogonalAxis(v, new Cartesian4())).toEqual(Cartesian4.UNIT_Z);
    });

    it('most orthogonal angle is w', function() {
        var v = new Cartesian4(1.0, 2.0, 3.0, 0.0);
        expect(Cartesian4.mostOrthogonalAxis(v, new Cartesian4())).toEqual(Cartesian4.UNIT_W);

        v = new Cartesian4(2.0, 3.0, 1.0, 0.0);
        expect(Cartesian4.mostOrthogonalAxis(v, new Cartesian4())).toEqual(Cartesian4.UNIT_W);

        v = new Cartesian4(3.0, 1.0, 2.0, 0.0);
        expect(Cartesian4.mostOrthogonalAxis(v, new Cartesian4())).toEqual(Cartesian4.UNIT_W);

        v = new Cartesian4(3.0, 2.0, 1.0, 0.0);
        expect(Cartesian4.mostOrthogonalAxis(v, new Cartesian4())).toEqual(Cartesian4.UNIT_W);
    });

    it('equals', function() {
        var cartesian = new Cartesian4(1.0, 2.0, 3.0, 4.0);
        expect(Cartesian4.equals(cartesian, new Cartesian4(1.0, 2.0, 3.0, 4.0))).toEqual(true);
        expect(Cartesian4.equals(cartesian, new Cartesian4(2.0, 2.0, 3.0, 4.0))).toEqual(false);
        expect(Cartesian4.equals(cartesian, new Cartesian4(2.0, 1.0, 3.0, 4.0))).toEqual(false);
        expect(Cartesian4.equals(cartesian, new Cartesian4(1.0, 2.0, 4.0, 4.0))).toEqual(false);
        expect(Cartesian4.equals(cartesian, new Cartesian4(1.0, 2.0, 3.0, 5.0))).toEqual(false);
        expect(Cartesian4.equals(cartesian, undefined)).toEqual(false);
    });

    it('equalsEpsilon', function() {
        var cartesian = new Cartesian4(1.0, 2.0, 3.0, 4.0);
        expect(cartesian.equalsEpsilon(new Cartesian4(1.0, 2.0, 3.0, 4.0), 0.0)).toEqual(true);
        expect(cartesian.equalsEpsilon(new Cartesian4(1.0, 2.0, 3.0, 4.0), 1.0)).toEqual(true);
        expect(cartesian.equalsEpsilon(new Cartesian4(2.0, 2.0, 3.0, 4.0), 1.0)).toEqual(true);
        expect(cartesian.equalsEpsilon(new Cartesian4(1.0, 3.0, 3.0, 4.0), 1.0)).toEqual(true);
        expect(cartesian.equalsEpsilon(new Cartesian4(1.0, 2.0, 4.0, 4.0), 1.0)).toEqual(true);
        expect(cartesian.equalsEpsilon(new Cartesian4(1.0, 2.0, 3.0, 5.0), 1.0)).toEqual(true);
        expect(cartesian.equalsEpsilon(new Cartesian4(2.0, 2.0, 3.0, 4.0), CesiumMath.EPSILON6)).toEqual(false);
        expect(cartesian.equalsEpsilon(new Cartesian4(1.0, 3.0, 3.0, 4.0), CesiumMath.EPSILON6)).toEqual(false);
        expect(cartesian.equalsEpsilon(new Cartesian4(1.0, 2.0, 4.0, 4.0), CesiumMath.EPSILON6)).toEqual(false);
        expect(cartesian.equalsEpsilon(new Cartesian4(1.0, 2.0, 3.0, 5.0), CesiumMath.EPSILON6)).toEqual(false);
        expect(cartesian.equalsEpsilon(undefined, 1)).toEqual(false);

        cartesian = new Cartesian4(3000000.0, 4000000.0, 5000000.0, 6000000.0);
        expect(cartesian.equalsEpsilon(new Cartesian4(3000000.0, 4000000.0, 5000000.0, 6000000.0), 0.0)).toEqual(true);
        expect(cartesian.equalsEpsilon(new Cartesian4(3000000.2, 4000000.0, 5000000.0, 6000000.0), CesiumMath.EPSILON7)).toEqual(true);
        expect(cartesian.equalsEpsilon(new Cartesian4(3000000.0, 4000000.2, 5000000.0, 6000000.0), CesiumMath.EPSILON7)).toEqual(true);
        expect(cartesian.equalsEpsilon(new Cartesian4(3000000.0, 4000000.0, 5000000.2, 6000000.0), CesiumMath.EPSILON7)).toEqual(true);
        expect(cartesian.equalsEpsilon(new Cartesian4(3000000.0, 4000000.0, 5000000.0, 6000000.2), CesiumMath.EPSILON7)).toEqual(true);
        expect(cartesian.equalsEpsilon(new Cartesian4(3000000.2, 4000000.2, 5000000.2, 6000000.2), CesiumMath.EPSILON7)).toEqual(true);
        expect(cartesian.equalsEpsilon(new Cartesian4(3000000.2, 4000000.2, 5000000.2, 6000000.2), CesiumMath.EPSILON9)).toEqual(false);
        expect(cartesian.equalsEpsilon(undefined, 1)).toEqual(false);

        expect(Cartesian4.equalsEpsilon(undefined, cartesian, 1)).toEqual(false);
    });

    it('toString', function() {
        var cartesian = new Cartesian4(1.123, 2.345, 6.789, 6.123);
        expect(cartesian.toString()).toEqual('(1.123, 2.345, 6.789, 6.123)');
    });

    it('clone returns undefined with no parameter', function() {
        expect(Cartesian4.clone()).toBeUndefined();
    });

    it('maximumComponent throws with no parameter', function() {
        expect(function() {
            Cartesian4.maximumComponent();
        }).toThrowDeveloperError();
    });

    it('minimumComponent throws with no parameter', function() {
        expect(function() {
            Cartesian4.minimumComponent();
        }).toThrowDeveloperError();
    });

    it('magnitudeSquared throws with no parameter', function() {
        expect(function() {
            Cartesian4.magnitudeSquared();
        }).toThrowDeveloperError();
    });

    it('magnitude throws with no parameter', function() {
        expect(function() {
            Cartesian4.magnitude();
        }).toThrowDeveloperError();
    });

    it('normalize throws with no parameter', function() {
        expect(function() {
            Cartesian4.normalize();
        }).toThrowDeveloperError();
    });

    it('dot throws with no left parameter', function() {
        expect(function() {
            Cartesian4.dot(undefined, new Cartesian4());
        }).toThrowDeveloperError();
    });

    it('multiplyComponents throw with no left parameter', function() {
        var right = new Cartesian4(4.0, 5.0, 6.0, 7.0);
        expect(function() {
            Cartesian4.multiplyComponents(undefined, right);
        }).toThrowDeveloperError();
    });

    it('multiplyComponents throw with no right parameter', function() {
        var left = new Cartesian4(4.0, 5.0, 6.0, 7.0);
        expect(function() {
            Cartesian4.multiplyComponents(left, undefined);
        }).toThrowDeveloperError();
    });

    it('divideComponents throw with no left parameter', function() {
        var right = new Cartesian4(4.0, 5.0, 6.0, 7.0);
        expect(function() {
            Cartesian4.divideComponents(undefined, right);
        }).toThrowDeveloperError();
    });

    it('divideComponents throw with no right parameter', function() {
        var left = new Cartesian4(4.0, 5.0, 6.0, 7.0);
        expect(function() {
            Cartesian4.divideComponents(left, undefined);
        }).toThrowDeveloperError();
    });

    it('dot throws with no right parameter', function() {
        expect(function() {
            Cartesian4.dot(new Cartesian4(), undefined);
        }).toThrowDeveloperError();
    });

    it('add throws with no left parameter', function() {
        expect(function() {
            Cartesian4.add(undefined, new Cartesian4());
        }).toThrowDeveloperError();
    });

    it('add throws with no right parameter', function() {
        expect(function() {
            Cartesian4.add(new Cartesian4(), undefined);
        }).toThrowDeveloperError();
    });

    it('subtract throws with no left parameter', function() {
        expect(function() {
            Cartesian4.subtract(undefined, new Cartesian4());
        }).toThrowDeveloperError();
    });

    it('subtract throws with no right parameter', function() {
        expect(function() {
            Cartesian4.subtract(new Cartesian4(), undefined);
        }).toThrowDeveloperError();
    });

    it('multiplyByScalar throws with no cartesian parameter', function() {
        expect(function() {
            Cartesian4.multiplyByScalar(undefined, 2.0);
        }).toThrowDeveloperError();
    });

    it('multiplyByScalar throws with no scalar parameter', function() {
        expect(function() {
            Cartesian4.multiplyByScalar(new Cartesian4(), undefined);
        }).toThrowDeveloperError();
    });

    it('divideByScalar throws with no cartesian parameter', function() {
        expect(function() {
            Cartesian4.divideByScalar(undefined, 2.0);
        }).toThrowDeveloperError();
    });

    it('divideByScalar throws with no scalar parameter', function() {
        expect(function() {
            Cartesian4.divideByScalar(new Cartesian4(), undefined);
        }).toThrowDeveloperError();
    });

    it('negate throws with no cartesian parameter', function() {
        expect(function() {
            Cartesian4.negate(undefined);
        }).toThrowDeveloperError();
    });

    it('abs throws with no cartesian parameter', function() {
        expect(function() {
            Cartesian4.abs(undefined);
        }).toThrowDeveloperError();
    });

    it('lerp throws with no start parameter', function() {
        var end = new Cartesian4(8.0, 20.0, 6.0);
        var t = 0.25;
        expect(function() {
            Cartesian4.lerp(undefined, end, t);
        }).toThrowDeveloperError();
    });

    it('lerp throws with no end parameter', function() {
        var start = new Cartesian4(4.0, 8.0, 6.0);
        var t = 0.25;
        expect(function() {
            Cartesian4.lerp(start, undefined, t);
        }).toThrowDeveloperError();
    });

    it('lerp throws with no t parameter', function() {
        var start = new Cartesian4(4.0, 8.0, 6.0, 7.0);
        var end = new Cartesian4(8.0, 20.0, 6.0, 7.0);
        expect(function() {
            Cartesian4.lerp(start, end, undefined);
        }).toThrowDeveloperError();
    });

    it('mostOrthogonalAxis throws with no cartesian parameter', function() {
        expect(function() {
            Cartesian4.mostOrthogonalAxis(undefined);
        }).toThrowDeveloperError();
    });

    it('equalsEpsilon throws with no epsilon', function() {
        expect(function() {
            Cartesian4.equalsEpsilon(new Cartesian4(), new Cartesian4(), undefined);
        }).toThrowDeveloperError();
    });

    it('minimumByComponent throws with no result', function() {
        expect(function() {
            Cartesian4.minimumByComponent(new Cartesian4(), new Cartesian4());
        }).toThrowDeveloperError();
    });

    it('maximumByComponent throws with no result', function() {
        expect(function() {
            Cartesian4.maximumByComponent(new Cartesian4(), new Cartesian4());
        }).toThrowDeveloperError();
    });

    it('normalize throws with no result', function() {
        expect(function() {
            Cartesian4.normalize(new Cartesian4());
        }).toThrowDeveloperError();
    });

    it('multiplyComponents throws with no result', function() {
        expect(function() {
            Cartesian4.multiplyComponents(new Cartesian4(), new Cartesian4());
        }).toThrowDeveloperError();
    });

    it('divideComponents throws with no result', function() {
        expect(function() {
            Cartesian4.divideComponents(new Cartesian4(), new Cartesian4());
        }).toThrowDeveloperError();
    });

    it('add throws with no result', function() {
        expect(function() {
            Cartesian4.add(new Cartesian4(), new Cartesian4());
        }).toThrowDeveloperError();
    });

    it('subtract throws with no result', function() {
        expect(function() {
            Cartesian4.subtract(new Cartesian4(), new Cartesian4());
        }).toThrowDeveloperError();
    });

    it('multiplyByScalar throws with no result', function() {
        expect(function() {
            Cartesian4.multiplyByScalar(new Cartesian4(), 2);
        }).toThrowDeveloperError();
    });

    it('divideByScalar throws with no result', function() {
        expect(function() {
            Cartesian4.divideByScalar(new Cartesian4(), 2);
        }).toThrowDeveloperError();
    });

    it('negate throws with no result', function() {
        expect(function() {
            Cartesian4.negate(new Cartesian4());
        }).toThrowDeveloperError();
    });

    it('abs throws with no result', function() {
        expect(function() {
            Cartesian4.abs(new Cartesian4());
        }).toThrowDeveloperError();
    });

    it('mostOrthogonalAxis throws with no result', function() {
        expect(function() {
            Cartesian4.mostOrthogonalAxis(new Cartesian4());
        }).toThrowDeveloperError();
    });

    createPackableSpecs(Cartesian4, new Cartesian4(1, 2, 3, 4), [1, 2, 3, 4]);
    createPackableArraySpecs(Cartesian4, [new Cartesian4(1, 2, 3, 4), new Cartesian4(5, 6, 7, 8)], [1, 2, 3, 4, 5, 6, 7, 8]);
});