describe("Session Storage", function () {
    it("should exist", function () {
        expect(window.sessionStorage).toBeDefined();
        expect(typeof window.sessionStorage.length).not.toBe('undefined');
        expect(typeof(window.sessionStorage.key)).toBe('function');
        expect(typeof(window.sessionStorage.getItem)).toBe('function');
        expect(typeof(window.sessionStorage.setItem)).toBe('function');
        expect(typeof(window.sessionStorage.removeItem)).toBe('function');
        expect(typeof(window.sessionStorage.clear)).toBe('function');
    });

    it("check length", function () {
        expect(window.sessionStorage.length).toBe(0);
        window.sessionStorage.setItem("key","value");
        expect(window.sessionStorage.length).toBe(1);
        window.sessionStorage.removeItem("key");   
        expect(window.sessionStorage.length).toBe(0);
    });

    it("check key", function () {
        expect(window.sessionStorage.key(0)).toBe(null);
        window.sessionStorage.setItem("test","value");
        expect(window.sessionStorage.key(0)).toBe("test");
        window.sessionStorage.removeItem("test");   
        expect(window.sessionStorage.key(0)).toBe(null);
    });

    it("check getItem", function() {
        expect(window.sessionStorage.getItem("item")).toBe(null);
        window.sessionStorage.setItem("item","value");
        expect(window.sessionStorage.getItem("item")).toBe("value");
        window.sessionStorage.removeItem("item");   
        expect(window.sessionStorage.getItem("item")).toBe(null);
    });

    it("check setItem", function() {
        expect(window.sessionStorage.getItem("item")).toBe(null);
        window.sessionStorage.setItem("item","value");
        expect(window.sessionStorage.getItem("item")).toBe("value");
        window.sessionStorage.setItem("item","newval");
        expect(window.sessionStorage.getItem("item")).toBe("newval");
        window.sessionStorage.removeItem("item");   
        expect(window.sessionStorage.getItem("item")).toBe(null);
    });

    it("can remove an item", function () {
        expect(window.sessionStorage.getItem("item")).toBe(null);
        window.sessionStorage.setItem("item","value");
        expect(window.sessionStorage.getItem("item")).toBe("value");
        window.sessionStorage.removeItem("item");   
        expect(window.sessionStorage.getItem("item")).toBe(null);
    });

    it("check clear", function() {
        window.sessionStorage.setItem("item1","value");
        window.sessionStorage.setItem("item2","value");
        window.sessionStorage.setItem("item3","value");
        expect(window.sessionStorage.length).toBe(3);
        window.sessionStorage.clear();
        expect(window.sessionStorage.length).toBe(0);
    });

    it("check dot notation", function() {
        expect(window.sessionStorage.item).not.toBeDefined();
        window.sessionStorage.item = "value";
        expect(window.sessionStorage.item).toBe("value");
        window.sessionStorage.removeItem("item");   
        expect(window.sessionStorage.item).not.toBeDefined();
    });

    describe("Local Storage", function () {
        it("should exist", function() {
            expect(window.localStorage).toBeDefined();
            expect(window.localStorage.length).toBeDefined();
            expect(typeof window.localStorage.key).toBe("function");
            expect(typeof window.localStorage.getItem).toBe("function");
            expect(typeof window.localStorage.setItem).toBe("function");
            expect(typeof window.localStorage.removeItem).toBe("function");
            expect(typeof window.localStorage.clear).toBe("function");
        });  

        it("check length", function() {
            expect(window.localStorage.length).toBe(0);
            window.localStorage.setItem("key","value");
            expect(window.localStorage.length).toBe(1);
            window.localStorage.removeItem("key");   
            expect(window.localStorage.length).toBe(0);
        });

        it("check key", function() {
            expect(window.localStorage.key(0)).toBe(null);
            window.localStorage.setItem("test","value");
            expect(window.localStorage.key(0)).toBe("test");
            window.localStorage.removeItem("test");   
            expect(window.localStorage.key(0)).toBe(null);
        });

        it("check getItem", function() {
            expect(window.localStorage.getItem("item")).toBe(null);
            window.localStorage.setItem("item","value");
            expect(window.localStorage.getItem("item")).toBe("value");
            window.localStorage.removeItem("item");   
            expect(window.localStorage.getItem("item")).toBe(null);
        });

        it("check setItem", function() {
            expect(window.localStorage.getItem("item")).toBe(null);
            window.localStorage.setItem("item","value");
            expect(window.localStorage.getItem("item")).toBe("value");
            window.localStorage.setItem("item","newval");
            expect(window.localStorage.getItem("item")).toBe("newval");
            window.localStorage.removeItem("item");   
            expect(window.localStorage.getItem("item")).toBe(null);
        });

        it("check removeItem", function() {
            expect(window.localStorage.getItem("item")).toBe(null);
            window.localStorage.setItem("item","value");
            expect(window.localStorage.getItem("item")).toBe("value");
            window.localStorage.removeItem("item");   
            expect(window.localStorage.getItem("item")).toBe(null);
        });

        it("check clear", function() {
            expect(window.localStorage.getItem("item1")).toBe(null);
            expect(window.localStorage.getItem("item2")).toBe(null);
            expect(window.localStorage.getItem("item3")).toBe(null);
            window.localStorage.setItem("item1","value");
            window.localStorage.setItem("item2","value");
            window.localStorage.setItem("item3","value");
            expect(window.localStorage.getItem("item1")).toBe("value");
            expect(window.localStorage.getItem("item2")).toBe("value");
            expect(window.localStorage.getItem("item3")).toBe("value");
            expect(window.localStorage.length).toBe(3);
            window.localStorage.clear();
            expect(window.localStorage.length).toBe(0);
            expect(window.localStorage.getItem("item1")).toBe(null);
            expect(window.localStorage.getItem("item2")).toBe(null);
            expect(window.localStorage.getItem("item3")).toBe(null);
        });

        it("check dot notation", function() {
            expect(window.localStorage.item).not.toBeDefined();
            window.localStorage.item = "value";
            expect(window.localStorage.item).toBe("value");
            window.localStorage.removeItem("item");   
            expect(window.localStorage.item).not.toBeDefined();
        });
    });

    describe("HTML 5 Storage", function () {
        it("should exist", function() {
            expect(window.openDatabase);
        });

        it("Should open a database", function() {
            var db = openDatabase("Database", "1.0", "HTML5 Database API example", 200000);
            expect(db).toBeDefined();
        });
    });
});