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describe('c3 api data', function () {
    'use strict';

    var chart;

    var args = {
        data: {
            columns: [
                ['data1', 30, 200, 100, 400, 150, 250],
                ['data2', 5000, 2000, 1000, 4000, 1500, 2500]
            ],
            names: {
                data1: 'Data Name 1',
                data2: 'Data Name 2'
            },
            colors: {
                data1: '#FF0000',
                data2: '#00FF00'
            },
            axes: {
                data1: 'y',
                data2: 'y2'
            }
        },
        axis: {
            y2: {
                show: true
            }
        }
    };

    beforeEach(function (done) {
        chart = window.initChart(chart, args, done);
    });

    describe('data()', function () {

        it('should return all of data if no argument given', function () {
            var results = chart.data(),
                expected = ['data1', 'data2'];
            results.forEach(function (result, i) {
                expect(result.id).toBe(expected[i]);
            });
        });

        it('should return specifid data if string argument given', function () {
            var results = chart.data('data1');
            expect(results.length).toBe(1);
            expect(results[0].id).toBe('data1');
        });

        it('should return specifid data if array argument given', function () {
            var results = chart.data(['data1', 'data2']);
            expect(results.length).toBe(2);
            expect(results[0].id).toBe('data1');
            expect(results[1].id).toBe('data2');
        });

    });

    describe('data.shown()', function () {

        it('should return only shown targets', function () {
            var results;
            chart.hide('data1');
            results = chart.data.shown();
            expect(results.length).toBe(1);
            expect(results[0].id).toBe('data2');
        });

    });

    describe('data.values()', function () {

        it('should return values for specified target', function () {
            var values = chart.data.values('data1'),
                expectedValues = [30, 200, 100, 400, 150, 250];
            expect(values.length).toBe(6);
            values.forEach(function (v, i) {
                expect(v).toBe(expectedValues[i]);
            });
        });

        it('should return null when no args', function () {
            var values = chart.data.values();
            expect(values).toBeNull();
        });

    });

    describe('data.names()', function () {

        it('should return data.names specified as argument', function () {
            var results = chart.data.names();
            expect(results.data1).toBe('Data Name 1');
            expect(results.data2).toBe('Data Name 2');
        });

        it('should return data.names specified as api', function () {
            var results = chart.data.names({
                data1: 'New Data Name 1',
                data2: 'New Data Name 2'
            });
            expect(results.data1).toBe('New Data Name 1');
            expect(results.data2).toBe('New Data Name 2');
        });

        it('should set data.names specified as api', function () {
            expect(d3.select('.c3-legend-item-data1 text').text()).toBe("New Data Name 1");
            expect(d3.select('.c3-legend-item-data2 text').text()).toBe("New Data Name 2");
        });

    });

    describe('data.colors()', function () {

        it('should return data.colors specified as argument', function () {
            var results = chart.data.colors();
            expect(results.data1).toBe('#FF0000');
            expect(results.data2).toBe('#00FF00');
        });

        it('should return data.colors specified as api', function () {
            var results = chart.data.colors({
                data1: '#00FF00',
                data2: '#FF0000'
            });
            expect(results.data1).toBe('#00FF00');
            expect(results.data2).toBe('#FF0000');
        });

        it('should set data.colors specified as api', function () {
            expect(d3.select('.c3-line-data1').style('stroke')).toBe("#00ff00");
            expect(d3.select('.c3-line-data2').style('stroke')).toBe("#ff0000");
            expect(d3.select('.c3-legend-item-data1 .c3-legend-item-tile').style('fill')).toBe("#00ff00");
            expect(d3.select('.c3-legend-item-data2 .c3-legend-item-tile').style('fill')).toBe("#ff0000");
        });

    });

    describe('data.axes()', function () {

        it('should return data.axes specified as argument', function () {
            var results = chart.data.axes();
            expect(results.data1).toBe('y');
            expect(results.data2).toBe('y2');
            expect(d3.select('.c3-axis-y g.tick text').text()).toBe('0');
            expect(d3.select('.c3-axis-y2 g.tick text').text()).toBe('1000');
        });

        it('should return data.axes specified as api', function () {
            var results = chart.data.axes({
                data1: 'y2',
                data2: 'y'
            });
            expect(results.data1).toBe('y2');
            expect(results.data2).toBe('y');
            expect(d3.select('.c3-axis-y g.tick text').text()).toBe('1000');
            expect(d3.select('.c3-axis-y2 g.tick text').text()).toBe('0');
        });

    });

});