describe('Flotr', function () {

    describe('Plots', function () {

        var
            nodeA, nodeB,
            a, b;

        beforeEach(function () {

            // Add imagediff matchers
            this.addMatchers(imagediff.jasmine);

            nodeA = buildNode();
            nodeB = buildNode();
        });

        afterEach(function () {
            destroyNode(nodeA);
            destroyNode(nodeB);
            a = null;
            b = null;
            Flotr = null;
        });

        _.each(TestFlotr.ExampleList.examples, function (example, key) {

            it('should draw a `' + example.name + '`line graph', function () {

                executeExampleTest(example, StableFlotr, nodeA);
                executeExampleTest(example, TestFlotr, nodeB);

                if (example.timeout) {
                    waits(example.timeout);
                    runs(function () {
                        expect(nodeB.graph.ctx).toImageDiffEqual(nodeA.graph.ctx, example.tolerance || 0);
                    });
                } else {
                    expect(nodeB.graph.ctx).toImageDiffEqual(nodeA.graph.ctx, example.tolerance || 0);
                }
            });
        });

        // Helpers

        function executeExampleTest(example, flotr, node) {
            Math.seedrandom(example.key);
            Flotr = flotr;
            example.callback.apply(this, [node].concat(example.args || []));
        }

        function buildNode() {
            var node = document.createElement('div');
            document.body.appendChild(node);
            node.style.width = '320px';
            node.style.height = '240px';
            return node;
        }

        function destroyNode(node) {
            document.body.removeChild(node);
        }
    });

    describe('Main', function () {

        it('gets a tick size', function () {
            expect(TestFlotr.getTickSize).not.toBeUndefined();
            expect(TestFlotr.getTickSize(10, 0, 100, 1)).toEqual(10);
            expect(TestFlotr.getTickSize(20, 0, 100, 1)).toEqual(5);
            expect(TestFlotr.getTickSize(5, 10, 110, 1)).toEqual(20);
            expect(TestFlotr.getTickSize(0, 0, 10, 1)).toEqual(Number.POSITIVE_INFINITY);
            expect(isNaN(TestFlotr.getTickSize(0, 0, -10, 1))).toBeTruthy();
        });
    });
});