704 lines
16 KiB
JavaScript
704 lines
16 KiB
JavaScript
describe('Linear Scale', function() {
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var chartInstance;
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beforeEach(function() {
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window.addDefaultMatchers(jasmine);
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});
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afterEach(function() {
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if (chartInstance)
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{
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releaseChart(chartInstance);
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}
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});
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it('Should register the constructor with the scale service', function() {
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var Constructor = Chart.scaleService.getScaleConstructor('linear');
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expect(Constructor).not.toBe(undefined);
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expect(typeof Constructor).toBe('function');
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});
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it('Should have the correct default config', function() {
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var defaultConfig = Chart.scaleService.getScaleDefaults('linear');
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expect(defaultConfig).toEqual({
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display: true,
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gridLines: {
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color: "rgba(0, 0, 0, 0.1)",
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drawOnChartArea: true,
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drawTicks: true, // draw ticks extending towards the label
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tickMarkLength: 10,
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lineWidth: 1,
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offsetGridLines: false,
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display: true,
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zeroLineColor: "rgba(0,0,0,0.25)",
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zeroLineWidth: 1,
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},
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position: "left",
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scaleLabel: {
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labelString: '',
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display: false,
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},
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ticks: {
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beginAtZero: false,
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maxRotation: 50,
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mirror: false,
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padding: 10,
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reverse: false,
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display: true,
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callback: defaultConfig.ticks.callback, // make this work nicer, then check below
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autoSkip: true,
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autoSkipPadding: 0
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}
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});
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expect(defaultConfig.ticks.callback).toEqual(jasmine.any(Function));
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});
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it('Should correctly determine the max & min data values', function() {
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chartInstance = window.acquireChart({
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type: 'bar',
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data: {
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datasets: [{
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yAxisID: 'yScale0',
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data: [10, 5, 0, -5, 78, -100]
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}, {
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yAxisID: 'yScale1',
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data: [-1000, 1000],
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}, {
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yAxisID: 'yScale0',
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data: [150]
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}],
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labels: ['a', 'b', 'c', 'd', 'e', 'f']
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},
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options: {
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scales: {
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yAxes: [{
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id: 'yScale0',
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type: 'linear'
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}, {
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id: 'yScale1',
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type: 'linear'
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}]
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}
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}
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});
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expect(chartInstance.scales.yScale0).not.toEqual(undefined); // must construct
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expect(chartInstance.scales.yScale0.min).toBe(-100);
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expect(chartInstance.scales.yScale0.max).toBe(150);
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});
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it('Should correctly determine the max & min of string data values', function() {
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chartInstance = window.acquireChart({
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type: 'bar',
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data: {
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datasets: [{
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yAxisID: 'yScale0',
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data: ['10', '5', '0', '-5', '78', '-100']
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}, {
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yAxisID: 'yScale1',
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data: ['-1000', '1000'],
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}, {
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yAxisID: 'yScale0',
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data: ['150']
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}],
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labels: ['a', 'b', 'c', 'd', 'e', 'f']
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},
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options: {
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scales: {
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yAxes: [{
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id: 'yScale0',
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type: 'linear'
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}, {
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id: 'yScale1',
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type: 'linear'
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}]
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}
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}
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});
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expect(chartInstance.scales.yScale0).not.toEqual(undefined); // must construct
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expect(chartInstance.scales.yScale0.min).toBe(-100);
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expect(chartInstance.scales.yScale0.max).toBe(150);
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});
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it('Should correctly determine the max & min data values ignoring hidden datasets', function() {
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chartInstance = window.acquireChart({
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type: 'bar',
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data: {
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datasets: [{
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yAxisID: 'yScale0',
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data: ['10', '5', '0', '-5', '78', '-100']
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}, {
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yAxisID: 'yScale1',
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data: ['-1000', '1000'],
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}, {
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yAxisID: 'yScale0',
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data: ['150'],
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hidden: true
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}],
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labels: ['a', 'b', 'c', 'd', 'e', 'f']
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},
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options: {
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scales: {
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yAxes: [{
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id: 'yScale0',
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type: 'linear'
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}, {
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id: 'yScale1',
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type: 'linear'
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}]
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}
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}
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});
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expect(chartInstance.scales.yScale0).not.toEqual(undefined); // must construct
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expect(chartInstance.scales.yScale0.min).toBe(-100);
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expect(chartInstance.scales.yScale0.max).toBe(80);
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});
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it('Should correctly determine the max & min data values ignoring data that is NaN', function() {
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chartInstance = window.acquireChart({
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type: 'bar',
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data: {
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datasets: [{
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yAxisID: 'yScale0',
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data: [null, 90, NaN, undefined, 45, 30]
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}],
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labels: ['a', 'b', 'c', 'd', 'e', 'f']
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},
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options: {
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scales: {
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yAxes: [{
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id: 'yScale0',
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type: 'linear'
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}]
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}
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}
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});
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expect(chartInstance.scales.yScale0.min).toBe(30);
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expect(chartInstance.scales.yScale0.max).toBe(90);
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// Scale is now stacked
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chartInstance.scales.yScale0.options.stacked = true;
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chartInstance.update();
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expect(chartInstance.scales.yScale0.min).toBe(0);
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expect(chartInstance.scales.yScale0.max).toBe(90);
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});
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it('Should correctly determine the max & min for scatter data', function() {
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chartInstance = window.acquireChart({
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type: 'line',
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data: {
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datasets: [{
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xAxisID: 'xScale0',
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yAxisID: 'yScale0',
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data: [{
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x: 10,
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y: 100
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}, {
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x: -10,
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y: 0
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}, {
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x: 0,
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y: 0
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}, {
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x: 99,
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y: 7
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}]
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}],
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},
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options: {
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scales: {
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xAxes: [{
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id: 'xScale0',
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type: 'linear',
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position: 'bottom'
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}],
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yAxes: [{
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id: 'yScale0',
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type: 'linear'
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}]
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}
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}
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});
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chartInstance.update();
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expect(chartInstance.scales.xScale0.min).toBe(-20);
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expect(chartInstance.scales.xScale0.max).toBe(100);
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expect(chartInstance.scales.yScale0.min).toBe(0);
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expect(chartInstance.scales.yScale0.max).toBe(100);
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});
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it('Should correctly get the label for the given index', function() {
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chartInstance = window.acquireChart({
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type: 'line',
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data: {
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datasets: [{
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xAxisID: 'xScale0',
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yAxisID: 'yScale0',
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data: [{
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x: 10,
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y: 100
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}, {
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x: -10,
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y: 0
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}, {
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x: 0,
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y: 0
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}, {
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x: 99,
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y: 7
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}]
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}],
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},
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options: {
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scales: {
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xAxes: [{
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id: 'xScale0',
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type: 'linear',
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position: 'bottom'
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}],
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yAxes: [{
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id: 'yScale0',
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type: 'linear'
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}]
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}
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}
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});
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chartInstance.update();
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expect(chartInstance.scales.yScale0.getLabelForIndex(3, 0)).toBe(7);
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});
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it('Should correctly determine the min and max data values when stacked mode is turned on', function() {
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chartInstance = window.acquireChart({
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type: 'line',
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data: {
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datasets: [{
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yAxisID: 'yScale0',
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data: [10, 5, 0, -5, 78, -100],
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type: 'bar'
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}, {
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yAxisID: 'yScale1',
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data: [-1000, 1000],
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}, {
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yAxisID: 'yScale0',
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data: [150, 0, 0, -100, -10, 9],
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type: 'bar'
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}, {
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yAxisID: 'yScale0',
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data: [10, 10, 10, 10, 10, 10],
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type: 'line'
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}],
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labels: ['a', 'b', 'c', 'd', 'e', 'f']
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},
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options: {
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scales: {
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yAxes: [{
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id: 'yScale0',
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type: 'linear',
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stacked: true
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}, {
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id: 'yScale1',
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type: 'linear'
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}]
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}
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}
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});
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chartInstance.update();
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expect(chartInstance.scales.yScale0.min).toBe(-150);
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expect(chartInstance.scales.yScale0.max).toBe(200);
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});
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it('Should correctly determine the min and max data values when stacked mode is turned on and there are hidden datasets', function() {
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chartInstance = window.acquireChart({
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type: 'bar',
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data: {
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datasets: [{
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yAxisID: 'yScale0',
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data: [10, 5, 0, -5, 78, -100],
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}, {
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yAxisID: 'yScale1',
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data: [-1000, 1000],
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}, {
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yAxisID: 'yScale0',
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data: [150, 0, 0, -100, -10, 9],
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}, {
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yAxisID: 'yScale0',
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data: [10, 20, 30, 40, 50, 60],
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hidden: true
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}],
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labels: ['a', 'b', 'c', 'd', 'e', 'f']
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},
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options: {
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scales: {
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yAxes: [{
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id: 'yScale0',
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type: 'linear',
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stacked: true
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}, {
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id: 'yScale1',
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type: 'linear'
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}]
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}
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}
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});
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chartInstance.update();
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expect(chartInstance.scales.yScale0.min).toBe(-150);
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expect(chartInstance.scales.yScale0.max).toBe(200);
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});
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it('Should correctly determine the min and max data values when stacked mode is turned on there are multiple types of datasets', function() {
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chartInstance = window.acquireChart({
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type: 'bar',
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data: {
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datasets: [{
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yAxisID: 'yScale0',
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type: 'bar',
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data: [10, 5, 0, -5, 78, -100]
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}, {
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type: 'line',
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data: [10, 10, 10, 10, 10, 10],
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}, {
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type: 'bar',
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data: [150, 0, 0, -100, -10, 9]
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}],
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labels: ['a', 'b', 'c', 'd', 'e', 'f']
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},
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options: {
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scales: {
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yAxes: [{
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id: 'yScale0',
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type: 'linear',
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stacked: true
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}]
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}
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}
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});
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chartInstance.scales.yScale0.determineDataLimits();
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expect(chartInstance.scales.yScale0.min).toBe(-105);
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expect(chartInstance.scales.yScale0.max).toBe(160);
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});
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it('Should ensure that the scale has a max and min that are not equal', function() {
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chartInstance = window.acquireChart({
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type: 'bar',
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data: {
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datasets: [],
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labels: ['a', 'b', 'c', 'd', 'e', 'f']
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},
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options: {
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scales: {
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yAxes: [{
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id: 'yScale0',
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type: 'linear'
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}]
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}
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}
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});
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expect(chartInstance.scales.yScale0).not.toEqual(undefined); // must construct
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expect(chartInstance.scales.yScale0.min).toBe(-1);
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expect(chartInstance.scales.yScale0.max).toBe(1);
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});
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it('Should use the suggestedMin and suggestedMax options', function() {
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chartInstance = window.acquireChart({
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type: 'bar',
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data: {
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datasets: [{
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yAxisID: 'yScale0',
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data: [1, 1, 1, 2, 1, 0]
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}],
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labels: ['a', 'b', 'c', 'd', 'e', 'f']
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},
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options: {
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scales: {
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yAxes: [{
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id: 'yScale0',
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type: 'linear',
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ticks: {
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suggestedMax: 10,
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suggestedMin: -10
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}
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}]
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}
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}
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});
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expect(chartInstance.scales.yScale0).not.toEqual(undefined); // must construct
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expect(chartInstance.scales.yScale0.min).toBe(-10);
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expect(chartInstance.scales.yScale0.max).toBe(10);
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});
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it('Should use the min and max options', function() {
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chartInstance = window.acquireChart({
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type: 'bar',
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data: {
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datasets: [{
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yAxisID: 'yScale0',
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data: [1, 1, 1, 2, 1, 0]
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}],
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labels: ['a', 'b', 'c', 'd', 'e', 'f']
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},
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options: {
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scales: {
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yAxes: [{
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id: 'yScale0',
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type: 'linear',
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ticks: {
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max: 1010,
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min: -1010
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}
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}]
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}
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}
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});
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expect(chartInstance.scales.yScale0).not.toEqual(undefined); // must construct
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expect(chartInstance.scales.yScale0.min).toBe(-1010);
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expect(chartInstance.scales.yScale0.max).toBe(1010);
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expect(chartInstance.scales.yScale0.ticks[0]).toBe('1010');
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expect(chartInstance.scales.yScale0.ticks[chartInstance.scales.yScale0.ticks.length - 1]).toBe('-1010');
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});
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it('should forcibly include 0 in the range if the beginAtZero option is used', function() {
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chartInstance = window.acquireChart({
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type: 'bar',
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data: {
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datasets: [{
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yAxisID: 'yScale0',
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data: [20, 30, 40, 50]
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}],
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labels: ['a', 'b', 'c', 'd']
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},
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options: {
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scales: {
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yAxes: [{
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id: 'yScale0',
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type: 'linear',
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}]
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}
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}
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});
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expect(chartInstance.scales.yScale0).not.toEqual(undefined); // must construct
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expect(chartInstance.scales.yScale0.ticks).toEqual(['50', '45', '40', '35', '30', '25', '20']);
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chartInstance.scales.yScale0.options.ticks.beginAtZero = true;
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chartInstance.update();
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expect(chartInstance.scales.yScale0.ticks).toEqual(['50', '45', '40', '35', '30', '25', '20', '15', '10', '5', '0']);
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chartInstance.data.datasets[0].data = [-20, -30, -40, -50];
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chartInstance.update();
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expect(chartInstance.scales.yScale0.ticks).toEqual(['0', '-5', '-10', '-15', '-20', '-25', '-30', '-35', '-40', '-45', '-50']);
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chartInstance.scales.yScale0.options.ticks.beginAtZero = false;
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chartInstance.update();
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expect(chartInstance.scales.yScale0.ticks).toEqual(['-20', '-25', '-30', '-35', '-40', '-45', '-50']);
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});
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it('Should generate tick marks in the correct order in reversed mode', function() {
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chartInstance = window.acquireChart({
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type: 'bar',
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data: {
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datasets: [{
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yAxisID: 'yScale0',
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data: [10, 5, 0, 25, 78]
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}],
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labels: ['a', 'b', 'c', 'd']
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},
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options: {
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scales: {
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yAxes: [{
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id: 'yScale0',
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type: 'linear',
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ticks: {
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reverse: true
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}
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}]
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}
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}
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});
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expect(chartInstance.scales.yScale0.ticks).toEqual(['0', '10', '20', '30', '40', '50', '60', '70', '80']);
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expect(chartInstance.scales.yScale0.start).toBe(80);
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expect(chartInstance.scales.yScale0.end).toBe(0);
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});
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it('should use the correct number of decimal places in the default format function', function() {
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chartInstance = window.acquireChart({
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type: 'bar',
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data: {
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datasets: [{
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yAxisID: 'yScale0',
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data: [0.06, 0.005, 0, 0.025, 0.0078]
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}],
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labels: ['a', 'b', 'c', 'd']
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},
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options: {
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scales: {
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yAxes: [{
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id: 'yScale0',
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type: 'linear',
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}]
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}
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}
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});
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expect(chartInstance.scales.yScale0.ticks).toEqual(['0.06', '0.05', '0.04', '0.03', '0.02', '0.01', '0']);
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});
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it('Should build labels using the user supplied callback', function() {
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chartInstance = window.acquireChart({
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type: 'bar',
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data: {
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datasets: [{
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yAxisID: 'yScale0',
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data: [10, 5, 0, 25, 78]
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}],
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labels: ['a', 'b', 'c', 'd']
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|
},
|
|
options: {
|
|
scales: {
|
|
yAxes: [{
|
|
id: 'yScale0',
|
|
type: 'linear',
|
|
ticks: {
|
|
callback: function(value, index) {
|
|
return index.toString();
|
|
}
|
|
}
|
|
}]
|
|
}
|
|
}
|
|
});
|
|
|
|
// Just the index
|
|
expect(chartInstance.scales.yScale0.ticks).toEqual(['0', '1', '2', '3', '4', '5', '6', '7', '8']);
|
|
});
|
|
|
|
it('Should get the correct pixel value for a point', function() {
|
|
chartInstance = window.acquireChart({
|
|
type: 'line',
|
|
data: {
|
|
datasets: [{
|
|
xAxisID: 'xScale0',
|
|
yAxisID: 'yScale0',
|
|
data: []
|
|
}],
|
|
},
|
|
options: {
|
|
scales: {
|
|
xAxes: [{
|
|
id: 'xScale0',
|
|
type: 'linear',
|
|
position: 'bottom'
|
|
}],
|
|
yAxes: [{
|
|
id: 'yScale0',
|
|
type: 'linear'
|
|
}]
|
|
}
|
|
}
|
|
});
|
|
|
|
var xScale = chartInstance.scales.xScale0;
|
|
expect(xScale.getPixelForValue(1, 0, 0)).toBeCloseToPixel(501); // right - paddingRight
|
|
expect(xScale.getPixelForValue(-1, 0, 0)).toBeCloseToPixel(41); // left + paddingLeft
|
|
expect(xScale.getPixelForValue(0, 0, 0)).toBeCloseToPixel(271); // halfway*/
|
|
|
|
expect(xScale.getValueForPixel(501)).toBeCloseTo(1, 1e-2);
|
|
expect(xScale.getValueForPixel(41)).toBeCloseTo(-1, 1e-2);
|
|
expect(xScale.getValueForPixel(271)).toBeCloseTo(0, 1e-2);
|
|
|
|
var yScale = chartInstance.scales.yScale0;
|
|
expect(yScale.getPixelForValue(1, 0, 0)).toBeCloseToPixel(32); // right - paddingRight
|
|
expect(yScale.getPixelForValue(-1, 0, 0)).toBeCloseToPixel(484); // left + paddingLeft
|
|
expect(yScale.getPixelForValue(0, 0, 0)).toBeCloseToPixel(258); // halfway*/
|
|
|
|
expect(yScale.getValueForPixel(32)).toBe(1);
|
|
expect(yScale.getValueForPixel(484)).toBe(-1);
|
|
expect(yScale.getValueForPixel(258)).toBe(0);
|
|
});
|
|
|
|
it('should fit correctly', function() {
|
|
chartInstance = window.acquireChart({
|
|
type: 'line',
|
|
data: {
|
|
datasets: [{
|
|
xAxisID: 'xScale0',
|
|
yAxisID: 'yScale0',
|
|
data: [{
|
|
x: 10,
|
|
y: 100
|
|
}, {
|
|
x: -10,
|
|
y: 0
|
|
}, {
|
|
x: 0,
|
|
y: 0
|
|
}, {
|
|
x: 99,
|
|
y: 7
|
|
}]
|
|
}],
|
|
},
|
|
options: {
|
|
scales: {
|
|
xAxes: [{
|
|
id: 'xScale0',
|
|
type: 'linear',
|
|
position: 'bottom'
|
|
}],
|
|
yAxes: [{
|
|
id: 'yScale0',
|
|
type: 'linear'
|
|
}]
|
|
}
|
|
}
|
|
});
|
|
|
|
var xScale = chartInstance.scales.xScale0;
|
|
expect(xScale.paddingTop).toBeCloseToPixel(0);
|
|
expect(xScale.paddingBottom).toBeCloseToPixel(0);
|
|
expect(xScale.paddingLeft).toBeCloseToPixel(0);
|
|
expect(xScale.paddingRight).toBeCloseToPixel(13.5);
|
|
expect(xScale.width).toBeCloseToPixel(471);
|
|
expect(xScale.height).toBeCloseToPixel(28);
|
|
|
|
var yScale = chartInstance.scales.yScale0;
|
|
expect(yScale.paddingTop).toBeCloseToPixel(0);
|
|
expect(yScale.paddingBottom).toBeCloseToPixel(0);
|
|
expect(yScale.paddingLeft).toBeCloseToPixel(0);
|
|
expect(yScale.paddingRight).toBeCloseToPixel(0);
|
|
expect(yScale.width).toBeCloseToPixel(41);
|
|
expect(yScale.height).toBeCloseToPixel(452);
|
|
|
|
// Extra size when scale label showing
|
|
xScale.options.scaleLabel.display = true;
|
|
yScale.options.scaleLabel.display = true;
|
|
chartInstance.update();
|
|
|
|
expect(xScale.paddingTop).toBeCloseToPixel(0);
|
|
expect(xScale.paddingBottom).toBeCloseToPixel(0);
|
|
expect(xScale.paddingLeft).toBeCloseToPixel(0);
|
|
expect(xScale.paddingRight).toBeCloseToPixel(13.5);
|
|
expect(xScale.width).toBeCloseToPixel(453);
|
|
expect(xScale.height).toBeCloseToPixel(46);
|
|
|
|
expect(yScale.paddingTop).toBeCloseToPixel(0);
|
|
expect(yScale.paddingBottom).toBeCloseToPixel(0);
|
|
expect(yScale.paddingLeft).toBeCloseToPixel(0);
|
|
expect(yScale.paddingRight).toBeCloseToPixel(0);
|
|
expect(yScale.width).toBeCloseToPixel(59);
|
|
expect(yScale.height).toBeCloseToPixel(434);
|
|
});
|
|
});
|