describe("ol.Map", function() {
    
    // HPI - Hipster Programming Interface
    // EPI - Enterprise Programming Interface
    
    it("should be easy to make a map", function() {

        var map = ol.map();
        
        expect(map instanceof ol.Map).toBe(true);
        
    });

    it("should be easy to set the map center", function() {
        var map, center;

        // with array
        map = ol.map();
        map.center([-110, 45]);

        center = map.center();
        expect(center.x().toFixed(3)).toBe("-110.000");
        expect(center.y().toFixed(3)).toBe("45.000");
        expect(center instanceof ol.Loc).toBe(true);
        
        // with object literal
        map.center({x: -111, y: 46});
        
        center = map.center();
        expect(center.x().toFixed(3)).toBe("-111.000");
        expect(center.y().toFixed(3)).toBe("46.000");
        expect(center instanceof ol.Loc).toBe(true);

        // more verbose
        map = ol.map({
            center: ol.loc({x: -112, y: 47})
        });
        
        center = map.center();
        expect(center.x().toFixed(3)).toBe("-112.000");
        expect(center.y().toFixed(3)).toBe("47.000");
        expect(center instanceof ol.Loc).toBe(true);
        
    });
    
    it("allows flexible setting of center and zoom", function() {
        var map, center, zoom;
        
        // chained
        map = ol.map().center([1, 2]).zoom(3);

        center = map.center();
        zoom = map.zoom();
        expect(center.x().toFixed(3)).toBe("1.000");
        expect(center.y().toFixed(3)).toBe("2.000");
        expect(zoom).toBe(3);
        
        // all at once
        map = ol.map({
            center: [1, 2],
            zoom: 6
        });

        center = map.center();
        zoom = map.zoom();
        expect(center.x().toFixed(3)).toBe("1.000");
        expect(center.y().toFixed(3)).toBe("2.000");
        expect(zoom).toBe(6);
        
    });
    
    it("has a default projection", function() {
        
        var map = ol.map();
        var proj = map.projection();
        
        expect(proj instanceof ol.Projection).toBe(true);
        expect(proj.code()).toBe("EPSG:3857");
        
    });

    it("allows projection to be set", function() {
        var proj;
        
        // at construction
        var map = ol.map({projection: "EPSG:4326"});
        proj = map.projection();
        
        expect(proj instanceof ol.Projection).toBe(true);
        expect(proj.code()).toBe("EPSG:4326");
        
        // after construction
        map.projection("EPSG:3857");
        proj = map.projection();
        
        expect(proj instanceof ol.Projection).toBe(true);
        expect(proj.code()).toBe("EPSG:3857");
        
    });
    
    it("allows a user projection to be set", function() {
        var proj;

        var map = ol.map();
        proj = map.userProjection();
        
        expect(proj instanceof ol.Projection).toBe(true);
        expect(proj.code()).toBe("EPSG:4326");
        
        map.center([10, 20]);
        
        map.userProjection("EPSG:3857");
        var center = map.center();
        expect(center.x().toFixed(3)).toBe("1113194.908");
        expect(center.y().toFixed(3)).toBe("2273030.927");
        
    });
    
    it("provides feedback when you mess up", function() {
        var map;
        if (ol.DEBUG) {
            // misspelling
            expect(function() {
                map = ol.map({
                    centre: [1, 2]
                });
            }).toThrow(new Error("Unsupported config property: centre"));
        } else {
            expect(function() {
                map = ol.map({
                    centre: [1, 2]
                });
            }).not.toThrow();
        }
    });
    
    it("is destroyable", function() {
        
        var map = ol.map();
        map.center([1, 2]);
        
        map.destroy();

        expect(function() {
            map.center([3, 4]);
        }).toThrow();
        
    });
    
});