A suite of jasmine tests for the Array.prototype methods.

Array.prototype methods

(function () {

    describe("Array", function () {

        it("Array reverse()", function () {

            expect("sgniht").toBe("things".split("").reverse().join(""));
        });

        it("Array sort()", function () {
            var arr = [5, 0, 100, 10, 1, 11, 7];
            var arr2 = [5, 0, 100, 10, 1, 11, 7];

            arr.sort(function (one, two) {
                return one - two;
            });

            expect(arr).toEqual([0, 1, 5, 7, 10, 11, 100]);

            expect(arr2.sort()).toEqual([0, 1, 10, 100, 11, 5, 7]);

        });


        it("Array forEach()", function () {

            var arr = [1, 2, 3, 4, 5];
            var sum = 0;
            arr.forEach(function (curr) {
                sum += curr;
            });


            expect(sum).toEqual(15);
        });

        it("Array reduce()", function () {

            var arr = [1, 2, 3, 4, 5];

            var total = arr.reduce(function (one, two) {
                return one + two;
            });

            expect(total).toBe(15);
        });

        it("Array reduce()", function () {

            var arr = [1, 2, 3, 4, 5];

            var total = arr.reduce(function (one, two) {
                return one + two;
            });

            expect(total).toBe(15);
        });

        it("Array map()", function () {

            var arr = [1, 2, 3, 4, 5];

            var mapped = arr.map(function (val) {
                return val * val;
            });

            expect(mapped).toEqual([1, 4, 9, 16, 25]);

        });


        it("Array some()", function () {

            var arr = [1, 2, 3, 4];

            var contains4 = arr.some(function (num) {
                return num === 4;
            });

            var contains5 = arr.some(function (num) {
                return num === 5;
            });

            expect(contains5).not.toBe(true);

            expect(contains4).toBe(true);
        });


        it("Array every()", function () {

            var arr = [1, 2, 3, 4, 5];

            var areLessThan6 = arr.every(function (num) {
                return num < 6;
            });

            expect(areLessThan6).toBe(true);
        });

        it("Array filter()", function () {

            var arr = [0, 1, 2, 3];

            var result = arr.filter(function (num) {

                return num % 2 == 0;
            });
            expect(result).toEqual([0, 2]);
        });


    });


}());