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1212 lines
34 KiB
JavaScript
Executable File
1212 lines
34 KiB
JavaScript
Executable File
// Time scale tests
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describe('Time scale tests', function() {
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function createScale(data, options) {
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var scaleID = 'myScale';
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var mockContext = window.createMockContext();
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var Constructor = Chart.scaleService.getScaleConstructor('time');
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var scale = new Constructor({
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ctx: mockContext,
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options: options,
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chart: {
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data: data
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},
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id: scaleID
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});
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scale.update(400, 50);
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return scale;
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}
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function getTicksLabels(scale) {
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return scale.ticks;
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}
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beforeEach(function() {
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// Need a time matcher for getValueFromPixel
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jasmine.addMatchers({
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toBeCloseToTime: function() {
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return {
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compare: function(actual, expected) {
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var result = false;
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var diff = actual.diff(expected.value, expected.unit, true);
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result = Math.abs(diff) < (expected.threshold !== undefined ? expected.threshold : 0.01);
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return {
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pass: result
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};
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}
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};
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}
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});
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});
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it('should load moment.js as a dependency', function() {
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expect(window.moment).not.toBe(undefined);
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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('time');
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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('time');
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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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drawBorder: true,
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drawOnChartArea: true,
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drawTicks: true,
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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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zeroLineBorderDash: [],
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zeroLineBorderDashOffset: 0.0,
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borderDash: [],
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borderDashOffset: 0.0
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},
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position: 'bottom',
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offset: false,
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scaleLabel: Chart.defaults.scale.scaleLabel,
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bounds: 'data',
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distribution: 'linear',
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ticks: {
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beginAtZero: false,
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minRotation: 0,
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maxRotation: 50,
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mirror: false,
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source: 'auto',
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padding: 0,
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reverse: false,
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display: true,
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callback: defaultConfig.ticks.callback, // make this nicer, then check explicitly below,
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autoSkip: false,
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autoSkipPadding: 0,
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labelOffset: 0,
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minor: {},
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major: {
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enabled: false
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},
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},
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time: {
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parser: false,
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format: false,
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unit: false,
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round: false,
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isoWeekday: false,
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displayFormat: false,
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minUnit: 'millisecond',
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displayFormats: {
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millisecond: 'h:mm:ss.SSS a', // 11:20:01.123 AM
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second: 'h:mm:ss a', // 11:20:01 AM
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minute: 'h:mm a', // 11:20 AM
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hour: 'hA', // 5PM
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day: 'MMM D', // Sep 4
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week: 'll', // Week 46, or maybe "[W]WW - YYYY" ?
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month: 'MMM YYYY', // Sept 2015
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quarter: '[Q]Q - YYYY', // Q3
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year: 'YYYY' // 2015
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},
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}
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});
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// Is this actually a function
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expect(defaultConfig.ticks.callback).toEqual(jasmine.any(Function));
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});
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describe('when given inputs of different types', function() {
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// Helper to build date objects
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function newDateFromRef(days) {
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return moment('01/01/2015 12:00', 'DD/MM/YYYY HH:mm').add(days, 'd').toDate();
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}
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it('should accept labels as strings', function() {
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var mockData = {
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labels: ['2015-01-01T12:00:00', '2015-01-02T21:00:00', '2015-01-03T22:00:00', '2015-01-05T23:00:00', '2015-01-07T03:00', '2015-01-08T10:00', '2015-01-10T12:00'], // days
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};
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var scaleOptions = Chart.scaleService.getScaleDefaults('time');
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var scale = createScale(mockData, scaleOptions);
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scale.update(1000, 200);
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var ticks = getTicksLabels(scale);
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// `bounds === 'data'`: first and last ticks removed since outside the data range
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expect(ticks).toEqual(['Jan 2', 'Jan 3', 'Jan 4', 'Jan 5', 'Jan 6', 'Jan 7', 'Jan 8', 'Jan 9', 'Jan 10']);
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});
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it('should accept labels as date objects', function() {
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var mockData = {
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labels: [newDateFromRef(0), newDateFromRef(1), newDateFromRef(2), newDateFromRef(4), newDateFromRef(6), newDateFromRef(7), newDateFromRef(9)], // days
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};
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var scale = createScale(mockData, Chart.scaleService.getScaleDefaults('time'));
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scale.update(1000, 200);
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var ticks = getTicksLabels(scale);
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// `bounds === 'data'`: first and last ticks removed since outside the data range
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expect(ticks).toEqual(['Jan 2', 'Jan 3', 'Jan 4', 'Jan 5', 'Jan 6', 'Jan 7', 'Jan 8', 'Jan 9', 'Jan 10']);
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});
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it('should accept data as xy points', function() {
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var chart = 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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data: [{
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x: newDateFromRef(0),
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y: 1
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}, {
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x: newDateFromRef(1),
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y: 10
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}, {
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x: newDateFromRef(2),
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y: 0
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}, {
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x: newDateFromRef(4),
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y: 5
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}, {
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x: newDateFromRef(6),
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y: 77
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}, {
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x: newDateFromRef(7),
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y: 9
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}, {
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x: newDateFromRef(9),
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y: 5
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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: 'time',
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position: 'bottom'
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}],
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}
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}
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});
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var xScale = chart.scales.xScale0;
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xScale.update(800, 200);
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var ticks = getTicksLabels(xScale);
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// `bounds === 'data'`: first and last ticks removed since outside the data range
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expect(ticks).toEqual(['Jan 2', 'Jan 3', 'Jan 4', 'Jan 5', 'Jan 6', 'Jan 7', 'Jan 8', 'Jan 9', 'Jan 10']);
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});
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it('should accept data as ty points', function() {
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var chart = window.acquireChart({
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type: 'line',
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data: {
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datasets: [{
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xAxisID: 'tScale0',
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data: [{
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t: newDateFromRef(0),
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y: 1
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}, {
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t: newDateFromRef(1),
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y: 10
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}, {
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t: newDateFromRef(2),
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y: 0
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}, {
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t: newDateFromRef(4),
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y: 5
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}, {
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t: newDateFromRef(6),
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y: 77
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}, {
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t: newDateFromRef(7),
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y: 9
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}, {
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t: newDateFromRef(9),
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y: 5
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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: 'tScale0',
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type: 'time',
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position: 'bottom'
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}],
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}
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}
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});
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var tScale = chart.scales.tScale0;
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tScale.update(800, 200);
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var ticks = getTicksLabels(tScale);
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// `bounds === 'data'`: first and last ticks removed since outside the data range
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expect(ticks).toEqual(['Jan 2', 'Jan 3', 'Jan 4', 'Jan 5', 'Jan 6', 'Jan 7', 'Jan 8', 'Jan 9', 'Jan 10']);
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});
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});
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it('should allow custom time parsers', function() {
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var chart = window.acquireChart({
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type: 'line',
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data: {
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labels: ['foo', 'bar'],
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datasets: [{
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xAxisID: 'xScale0',
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data: [0, 1]
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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: 'time',
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position: 'bottom',
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time: {
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unit: 'day',
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round: true,
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parser: function(label) {
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return label === 'foo' ?
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moment('2000/01/02', 'YYYY/MM/DD') :
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moment('2016/05/08', 'YYYY/MM/DD');
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}
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},
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ticks: {
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source: 'labels'
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}
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}],
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}
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}
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});
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// Counts down because the lines are drawn top to bottom
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var xScale = chart.scales.xScale0;
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// Counts down because the lines are drawn top to bottom
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expect(xScale.ticks[0]).toBe('Jan 2');
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expect(xScale.ticks[1]).toBe('May 8');
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});
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it('should build ticks using the config unit', function() {
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var mockData = {
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labels: ['2015-01-01T20:00:00', '2015-01-02T21:00:00'], // days
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};
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var config = Chart.helpers.clone(Chart.scaleService.getScaleDefaults('time'));
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config.time.unit = 'hour';
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var scale = createScale(mockData, config);
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scale.update(2500, 200);
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var ticks = getTicksLabels(scale);
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expect(ticks).toEqual(['8PM', '9PM', '10PM', '11PM', '12AM', '1AM', '2AM', '3AM', '4AM', '5AM', '6AM', '7AM', '8AM', '9AM', '10AM', '11AM', '12PM', '1PM', '2PM', '3PM', '4PM', '5PM', '6PM', '7PM', '8PM', '9PM']);
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});
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it('build ticks honoring the minUnit', function() {
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var mockData = {
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labels: ['2015-01-01T20:00:00', '2015-01-02T21:00:00'], // days
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};
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var config = Chart.helpers.mergeIf({
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bounds: 'ticks',
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time: {
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minUnit: 'day'
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}
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}, Chart.scaleService.getScaleDefaults('time'));
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var scale = createScale(mockData, config);
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var ticks = getTicksLabels(scale);
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expect(ticks).toEqual(['Jan 1', 'Jan 2', 'Jan 3']);
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});
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it('should build ticks using the config diff', function() {
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var mockData = {
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labels: ['2015-01-01T20:00:00', '2015-02-02T21:00:00', '2015-02-21T01:00:00'], // days
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};
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var config = Chart.helpers.mergeIf({
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bounds: 'ticks',
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time: {
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unit: 'week',
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round: 'week'
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}
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}, Chart.scaleService.getScaleDefaults('time'));
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var scale = createScale(mockData, config);
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scale.update(800, 200);
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var ticks = getTicksLabels(scale);
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// last date is feb 15 because we round to start of week
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expect(ticks).toEqual(['Dec 28, 2014', 'Jan 4, 2015', 'Jan 11, 2015', 'Jan 18, 2015', 'Jan 25, 2015', 'Feb 1, 2015', 'Feb 8, 2015', 'Feb 15, 2015']);
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});
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describe('config step size', function() {
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it('should use the stepSize property', function() {
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var mockData = {
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labels: ['2015-01-01T20:00:00', '2015-01-01T21:00:00'],
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};
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var config = Chart.helpers.mergeIf({
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bounds: 'ticks',
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time: {
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unit: 'hour',
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stepSize: 2
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}
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}, Chart.scaleService.getScaleDefaults('time'));
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var scale = createScale(mockData, config);
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scale.update(2500, 200);
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var ticks = getTicksLabels(scale);
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expect(ticks).toEqual(['8PM', '10PM']);
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});
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});
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describe('when specifying limits', function() {
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var mockData = {
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labels: ['2015-01-01T20:00:00', '2015-01-02T20:00:00', '2015-01-03T20:00:00'],
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};
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var config;
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beforeEach(function() {
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config = Chart.helpers.clone(Chart.scaleService.getScaleDefaults('time'));
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config.ticks.source = 'labels';
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config.time.unit = 'day';
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});
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it('should use the min option when less than first label for building ticks', function() {
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config.time.min = '2014-12-29T04:00:00';
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var scale = createScale(mockData, config);
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expect(scale.ticks[0]).toEqual('Jan 1');
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});
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it('should use the min option when greater than first label for building ticks', function() {
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config.time.min = '2015-01-02T04:00:00';
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var scale = createScale(mockData, config);
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expect(scale.ticks[0]).toEqual('Jan 2');
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});
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it('should use the max option when greater than last label for building ticks', function() {
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config.time.max = '2015-01-05T06:00:00';
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var scale = createScale(mockData, config);
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expect(scale.ticks[scale.ticks.length - 1]).toEqual('Jan 3');
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});
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it('should use the max option when less than last label for building ticks', function() {
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config.time.max = '2015-01-02T23:00:00';
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var scale = createScale(mockData, config);
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expect(scale.ticks[scale.ticks.length - 1]).toEqual('Jan 2');
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});
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});
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it('should use the isoWeekday option', function() {
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var mockData = {
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labels: [
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'2015-01-01T20:00:00', // Thursday
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'2015-01-02T20:00:00', // Friday
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'2015-01-03T20:00:00' // Saturday
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]
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};
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var config = Chart.helpers.mergeIf({
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bounds: 'ticks',
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time: {
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unit: 'week',
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isoWeekday: 3 // Wednesday
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}
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}, Chart.scaleService.getScaleDefaults('time'));
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var scale = createScale(mockData, config);
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var ticks = getTicksLabels(scale);
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expect(ticks).toEqual(['Dec 31, 2014', 'Jan 7, 2015']);
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});
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describe('when rendering several days', function() {
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beforeEach(function() {
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this.chart = 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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data: []
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}],
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labels: [
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'2015-01-01T20:00:00',
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'2015-01-02T21:00:00',
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'2015-01-03T22:00:00',
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'2015-01-05T23:00:00',
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'2015-01-07T03:00',
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'2015-01-08T10:00',
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'2015-01-10T12:00'
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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: 'time',
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position: 'bottom'
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}],
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}
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}
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});
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this.scale = this.chart.scales.xScale0;
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});
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it('should be bounded by the nearest week beginnings', function() {
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var chart = this.chart;
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var scale = this.scale;
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expect(scale.getValueForPixel(scale.left)).toBeGreaterThan(moment(chart.data.labels[0]).startOf('week'));
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expect(scale.getValueForPixel(scale.right)).toBeLessThan(moment(chart.data.labels[chart.data.labels.length - 1]).add(1, 'week').endOf('week'));
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});
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it('should convert between screen coordinates and times', function() {
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var chart = this.chart;
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var scale = this.scale;
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var timeRange = moment(scale.max).valueOf() - moment(scale.min).valueOf();
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var msPerPix = timeRange / scale.width;
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var firstPointOffsetMs = moment(chart.config.data.labels[0]).valueOf() - scale.min;
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var firstPointPixel = scale.left + firstPointOffsetMs / msPerPix;
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var lastPointOffsetMs = moment(chart.config.data.labels[chart.config.data.labels.length - 1]).valueOf() - scale.min;
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var lastPointPixel = scale.left + lastPointOffsetMs / msPerPix;
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expect(scale.getPixelForValue('', 0, 0)).toBeCloseToPixel(firstPointPixel);
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expect(scale.getPixelForValue(chart.data.labels[0])).toBeCloseToPixel(firstPointPixel);
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expect(scale.getValueForPixel(firstPointPixel)).toBeCloseToTime({
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value: moment(chart.data.labels[0]),
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unit: 'hour',
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});
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expect(scale.getPixelForValue('', 6, 0)).toBeCloseToPixel(lastPointPixel);
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expect(scale.getValueForPixel(lastPointPixel)).toBeCloseToTime({
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value: moment(chart.data.labels[6]),
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unit: 'hour'
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});
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});
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});
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describe('when rendering several years', function() {
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beforeEach(function() {
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this.chart = window.acquireChart({
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type: 'line',
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data: {
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labels: ['2005-07-04', '2017-01-20'],
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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: 'time',
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bounds: 'ticks',
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position: 'bottom'
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}],
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}
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}
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});
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this.scale = this.chart.scales.xScale0;
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this.scale.update(800, 200);
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});
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it('should be bounded by nearest step\'s year start and end', function() {
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var scale = this.scale;
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var ticks = scale.getTicks();
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var step = ticks[1].value - ticks[0].value;
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var stepsAmount = Math.floor((scale.max - scale.min) / step);
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expect(scale.getValueForPixel(scale.left)).toBeCloseToTime({
|
|
value: moment(scale.min).startOf('year'),
|
|
unit: 'hour',
|
|
});
|
|
expect(scale.getValueForPixel(scale.right)).toBeCloseToTime({
|
|
value: moment(scale.min + step * stepsAmount).endOf('year'),
|
|
unit: 'hour',
|
|
});
|
|
});
|
|
|
|
it('should build the correct ticks', function() {
|
|
// Where 'correct' is a two year spacing.
|
|
expect(getTicksLabels(this.scale)).toEqual(['2005', '2007', '2009', '2011', '2013', '2015', '2017', '2019']);
|
|
});
|
|
|
|
it('should have ticks with accurate labels', function() {
|
|
var scale = this.scale;
|
|
var ticks = scale.getTicks();
|
|
var pixelsPerYear = scale.width / 14;
|
|
|
|
for (var i = 0; i < ticks.length - 1; i++) {
|
|
var offset = 2 * pixelsPerYear * i;
|
|
expect(scale.getValueForPixel(scale.left + offset)).toBeCloseToTime({
|
|
value: moment(ticks[i].label + '-01-01'),
|
|
unit: 'day',
|
|
threshold: 0.5,
|
|
});
|
|
}
|
|
});
|
|
});
|
|
|
|
it('should get the correct label for a data value', function() {
|
|
var chart = window.acquireChart({
|
|
type: 'line',
|
|
data: {
|
|
datasets: [{
|
|
xAxisID: 'xScale0',
|
|
data: [null, 10, 3]
|
|
}],
|
|
labels: ['2015-01-01T20:00:00', '2015-01-02T21:00:00', '2015-01-03T22:00:00', '2015-01-05T23:00:00', '2015-01-07T03:00', '2015-01-08T10:00', '2015-01-10T12:00'], // days
|
|
},
|
|
options: {
|
|
scales: {
|
|
xAxes: [{
|
|
id: 'xScale0',
|
|
type: 'time',
|
|
position: 'bottom'
|
|
}],
|
|
}
|
|
}
|
|
});
|
|
|
|
var xScale = chart.scales.xScale0;
|
|
expect(xScale.getLabelForIndex(0, 0)).toBeTruthy();
|
|
expect(xScale.getLabelForIndex(0, 0)).toBe('2015-01-01T20:00:00');
|
|
expect(xScale.getLabelForIndex(6, 0)).toBe('2015-01-10T12:00');
|
|
});
|
|
|
|
it('should get the correct pixel for only one data in the dataset', function() {
|
|
var chart = window.acquireChart({
|
|
type: 'line',
|
|
data: {
|
|
labels: ['2016-05-27'],
|
|
datasets: [{
|
|
xAxisID: 'xScale0',
|
|
data: [5]
|
|
}]
|
|
},
|
|
options: {
|
|
scales: {
|
|
xAxes: [{
|
|
id: 'xScale0',
|
|
display: true,
|
|
type: 'time'
|
|
}]
|
|
}
|
|
}
|
|
});
|
|
|
|
var xScale = chart.scales.xScale0;
|
|
var pixel = xScale.getPixelForValue('', 0, 0);
|
|
|
|
expect(xScale.getValueForPixel(pixel).valueOf()).toEqual(moment(chart.data.labels[0]).valueOf());
|
|
});
|
|
|
|
it('does not create a negative width chart when hidden', function() {
|
|
var chart = window.acquireChart({
|
|
type: 'line',
|
|
data: {
|
|
datasets: [{
|
|
data: []
|
|
}]
|
|
},
|
|
options: {
|
|
scales: {
|
|
xAxes: [{
|
|
type: 'time',
|
|
time: {
|
|
min: moment().subtract(1, 'months'),
|
|
max: moment(),
|
|
}
|
|
}],
|
|
},
|
|
responsive: true,
|
|
},
|
|
}, {
|
|
wrapper: {
|
|
style: 'display: none',
|
|
},
|
|
});
|
|
expect(chart.scales['y-axis-0'].width).toEqual(0);
|
|
expect(chart.scales['y-axis-0'].maxWidth).toEqual(0);
|
|
expect(chart.width).toEqual(0);
|
|
});
|
|
|
|
describe('when ticks.source', function() {
|
|
describe('is "labels"', function() {
|
|
beforeEach(function() {
|
|
this.chart = window.acquireChart({
|
|
type: 'line',
|
|
data: {
|
|
labels: ['2017', '2019', '2020', '2025', '2042'],
|
|
datasets: [{data: [0, 1, 2, 3, 4, 5]}]
|
|
},
|
|
options: {
|
|
scales: {
|
|
xAxes: [{
|
|
id: 'x',
|
|
type: 'time',
|
|
time: {
|
|
parser: 'YYYY'
|
|
},
|
|
ticks: {
|
|
source: 'labels'
|
|
}
|
|
}]
|
|
}
|
|
}
|
|
});
|
|
});
|
|
|
|
it ('should generate ticks from "data.labels"', function() {
|
|
var scale = this.chart.scales.x;
|
|
|
|
expect(scale.min).toEqual(+moment('2017', 'YYYY'));
|
|
expect(scale.max).toEqual(+moment('2042', 'YYYY'));
|
|
expect(getTicksLabels(scale)).toEqual([
|
|
'2017', '2019', '2020', '2025', '2042']);
|
|
});
|
|
it ('should not add ticks for min and max if they extend the labels range', function() {
|
|
var chart = this.chart;
|
|
var scale = chart.scales.x;
|
|
var options = chart.options.scales.xAxes[0];
|
|
|
|
options.time.min = '2012';
|
|
options.time.max = '2051';
|
|
chart.update();
|
|
|
|
expect(scale.min).toEqual(+moment('2012', 'YYYY'));
|
|
expect(scale.max).toEqual(+moment('2051', 'YYYY'));
|
|
expect(getTicksLabels(scale)).toEqual([
|
|
'2017', '2019', '2020', '2025', '2042']);
|
|
});
|
|
it ('should not duplicate ticks if min and max are the labels limits', function() {
|
|
var chart = this.chart;
|
|
var scale = chart.scales.x;
|
|
var options = chart.options.scales.xAxes[0];
|
|
|
|
options.time.min = '2017';
|
|
options.time.max = '2042';
|
|
chart.update();
|
|
|
|
expect(scale.min).toEqual(+moment('2017', 'YYYY'));
|
|
expect(scale.max).toEqual(+moment('2042', 'YYYY'));
|
|
expect(getTicksLabels(scale)).toEqual([
|
|
'2017', '2019', '2020', '2025', '2042']);
|
|
});
|
|
it ('should correctly handle empty `data.labels` using "day" if `time.unit` is undefined`', function() {
|
|
var chart = this.chart;
|
|
var scale = chart.scales.x;
|
|
|
|
chart.data.labels = [];
|
|
chart.update();
|
|
|
|
expect(scale.min).toEqual(+moment().startOf('day'));
|
|
expect(scale.max).toEqual(+moment().endOf('day') + 1);
|
|
expect(getTicksLabels(scale)).toEqual([]);
|
|
});
|
|
it ('should correctly handle empty `data.labels` using `time.unit`', function() {
|
|
var chart = this.chart;
|
|
var scale = chart.scales.x;
|
|
var options = chart.options.scales.xAxes[0];
|
|
|
|
options.time.unit = 'year';
|
|
chart.data.labels = [];
|
|
chart.update();
|
|
|
|
expect(scale.min).toEqual(+moment().startOf('year'));
|
|
expect(scale.max).toEqual(+moment().endOf('year') + 1);
|
|
expect(getTicksLabels(scale)).toEqual([]);
|
|
});
|
|
});
|
|
|
|
describe('is "data"', function() {
|
|
beforeEach(function() {
|
|
this.chart = window.acquireChart({
|
|
type: 'line',
|
|
data: {
|
|
labels: ['2017', '2019', '2020', '2025', '2042'],
|
|
datasets: [
|
|
{data: [0, 1, 2, 3, 4, 5]},
|
|
{data: [
|
|
{t: '2018', y: 6},
|
|
{t: '2020', y: 7},
|
|
{t: '2043', y: 8}
|
|
]}
|
|
]
|
|
},
|
|
options: {
|
|
scales: {
|
|
xAxes: [{
|
|
id: 'x',
|
|
type: 'time',
|
|
time: {
|
|
parser: 'YYYY'
|
|
},
|
|
ticks: {
|
|
source: 'data'
|
|
}
|
|
}]
|
|
}
|
|
}
|
|
});
|
|
});
|
|
|
|
it ('should generate ticks from "datasets.data"', function() {
|
|
var scale = this.chart.scales.x;
|
|
|
|
expect(scale.min).toEqual(+moment('2017', 'YYYY'));
|
|
expect(scale.max).toEqual(+moment('2043', 'YYYY'));
|
|
expect(getTicksLabels(scale)).toEqual([
|
|
'2017', '2018', '2019', '2020', '2025', '2042', '2043']);
|
|
});
|
|
it ('should not add ticks for min and max if they extend the labels range', function() {
|
|
var chart = this.chart;
|
|
var scale = chart.scales.x;
|
|
var options = chart.options.scales.xAxes[0];
|
|
|
|
options.time.min = '2012';
|
|
options.time.max = '2051';
|
|
chart.update();
|
|
|
|
expect(scale.min).toEqual(+moment('2012', 'YYYY'));
|
|
expect(scale.max).toEqual(+moment('2051', 'YYYY'));
|
|
expect(getTicksLabels(scale)).toEqual([
|
|
'2017', '2018', '2019', '2020', '2025', '2042', '2043']);
|
|
});
|
|
it ('should not duplicate ticks if min and max are the labels limits', function() {
|
|
var chart = this.chart;
|
|
var scale = chart.scales.x;
|
|
var options = chart.options.scales.xAxes[0];
|
|
|
|
options.time.min = '2017';
|
|
options.time.max = '2043';
|
|
chart.update();
|
|
|
|
expect(scale.min).toEqual(+moment('2017', 'YYYY'));
|
|
expect(scale.max).toEqual(+moment('2043', 'YYYY'));
|
|
expect(getTicksLabels(scale)).toEqual([
|
|
'2017', '2018', '2019', '2020', '2025', '2042', '2043']);
|
|
});
|
|
it ('should correctly handle empty `data.labels` using "day" if `time.unit` is undefined`', function() {
|
|
var chart = this.chart;
|
|
var scale = chart.scales.x;
|
|
|
|
chart.data.labels = [];
|
|
chart.update();
|
|
|
|
expect(scale.min).toEqual(+moment('2018', 'YYYY'));
|
|
expect(scale.max).toEqual(+moment('2043', 'YYYY'));
|
|
expect(getTicksLabels(scale)).toEqual([
|
|
'2018', '2020', '2043']);
|
|
});
|
|
it ('should correctly handle empty `data.labels` and hidden datasets using `time.unit`', function() {
|
|
var chart = this.chart;
|
|
var scale = chart.scales.x;
|
|
var options = chart.options.scales.xAxes[0];
|
|
|
|
options.time.unit = 'year';
|
|
chart.data.labels = [];
|
|
var meta = chart.getDatasetMeta(1);
|
|
meta.hidden = true;
|
|
chart.update();
|
|
|
|
expect(scale.min).toEqual(+moment().startOf('year'));
|
|
expect(scale.max).toEqual(+moment().endOf('year') + 1);
|
|
expect(getTicksLabels(scale)).toEqual([]);
|
|
});
|
|
});
|
|
});
|
|
|
|
describe('when distribution', function() {
|
|
describe('is "series"', function() {
|
|
beforeEach(function() {
|
|
this.chart = window.acquireChart({
|
|
type: 'line',
|
|
data: {
|
|
labels: ['2017', '2019', '2020', '2025', '2042'],
|
|
datasets: [{data: [0, 1, 2, 3, 4, 5]}]
|
|
},
|
|
options: {
|
|
scales: {
|
|
xAxes: [{
|
|
id: 'x',
|
|
type: 'time',
|
|
time: {
|
|
parser: 'YYYY'
|
|
},
|
|
distribution: 'series',
|
|
ticks: {
|
|
source: 'labels'
|
|
}
|
|
}],
|
|
yAxes: [{
|
|
display: false
|
|
}]
|
|
}
|
|
}
|
|
});
|
|
});
|
|
|
|
it ('should space data out with the same gap, whatever their time values', function() {
|
|
var scale = this.chart.scales.x;
|
|
var start = scale.left;
|
|
var slice = scale.width / 4;
|
|
|
|
expect(scale.getPixelForValue('2017')).toBeCloseToPixel(start);
|
|
expect(scale.getPixelForValue('2019')).toBeCloseToPixel(start + slice);
|
|
expect(scale.getPixelForValue('2020')).toBeCloseToPixel(start + slice * 2);
|
|
expect(scale.getPixelForValue('2025')).toBeCloseToPixel(start + slice * 3);
|
|
expect(scale.getPixelForValue('2042')).toBeCloseToPixel(start + slice * 4);
|
|
});
|
|
it ('should add a step before if scale.min is before the first data', function() {
|
|
var chart = this.chart;
|
|
var scale = chart.scales.x;
|
|
var options = chart.options.scales.xAxes[0];
|
|
|
|
options.time.min = '2012';
|
|
chart.update();
|
|
|
|
var start = scale.left;
|
|
var slice = scale.width / 5;
|
|
|
|
expect(scale.getPixelForValue('2017')).toBeCloseToPixel(start + slice);
|
|
expect(scale.getPixelForValue('2042')).toBeCloseToPixel(start + slice * 5);
|
|
});
|
|
it ('should add a step after if scale.max is after the last data', function() {
|
|
var chart = this.chart;
|
|
var scale = chart.scales.x;
|
|
var options = chart.options.scales.xAxes[0];
|
|
|
|
options.time.max = '2050';
|
|
chart.update();
|
|
|
|
var start = scale.left;
|
|
var slice = scale.width / 5;
|
|
|
|
expect(scale.getPixelForValue('2017')).toBeCloseToPixel(start);
|
|
expect(scale.getPixelForValue('2042')).toBeCloseToPixel(start + slice * 4);
|
|
});
|
|
it ('should add steps before and after if scale.min/max are outside the data range', function() {
|
|
var chart = this.chart;
|
|
var scale = chart.scales.x;
|
|
var options = chart.options.scales.xAxes[0];
|
|
|
|
options.time.min = '2012';
|
|
options.time.max = '2050';
|
|
chart.update();
|
|
|
|
var start = scale.left;
|
|
var slice = scale.width / 6;
|
|
|
|
expect(scale.getPixelForValue('2017')).toBeCloseToPixel(start + slice);
|
|
expect(scale.getPixelForValue('2042')).toBeCloseToPixel(start + slice * 5);
|
|
});
|
|
});
|
|
describe('is "linear"', function() {
|
|
beforeEach(function() {
|
|
this.chart = window.acquireChart({
|
|
type: 'line',
|
|
data: {
|
|
labels: ['2017', '2019', '2020', '2025', '2042'],
|
|
datasets: [{data: [0, 1, 2, 3, 4, 5]}]
|
|
},
|
|
options: {
|
|
scales: {
|
|
xAxes: [{
|
|
id: 'x',
|
|
type: 'time',
|
|
time: {
|
|
parser: 'YYYY'
|
|
},
|
|
distribution: 'linear',
|
|
ticks: {
|
|
source: 'labels'
|
|
}
|
|
}],
|
|
yAxes: [{
|
|
display: false
|
|
}]
|
|
}
|
|
}
|
|
});
|
|
});
|
|
|
|
it ('should space data out with a gap relative to their time values', function() {
|
|
var scale = this.chart.scales.x;
|
|
var start = scale.left;
|
|
var slice = scale.width / (2042 - 2017);
|
|
|
|
expect(scale.getPixelForValue('2017')).toBeCloseToPixel(start);
|
|
expect(scale.getPixelForValue('2019')).toBeCloseToPixel(start + slice * (2019 - 2017));
|
|
expect(scale.getPixelForValue('2020')).toBeCloseToPixel(start + slice * (2020 - 2017));
|
|
expect(scale.getPixelForValue('2025')).toBeCloseToPixel(start + slice * (2025 - 2017));
|
|
expect(scale.getPixelForValue('2042')).toBeCloseToPixel(start + slice * (2042 - 2017));
|
|
});
|
|
it ('should take in account scale min and max if outside the ticks range', function() {
|
|
var chart = this.chart;
|
|
var scale = chart.scales.x;
|
|
var options = chart.options.scales.xAxes[0];
|
|
|
|
options.time.min = '2012';
|
|
options.time.max = '2050';
|
|
chart.update();
|
|
|
|
var start = scale.left;
|
|
var slice = scale.width / (2050 - 2012);
|
|
|
|
expect(scale.getPixelForValue('2017')).toBeCloseToPixel(start + slice * (2017 - 2012));
|
|
expect(scale.getPixelForValue('2019')).toBeCloseToPixel(start + slice * (2019 - 2012));
|
|
expect(scale.getPixelForValue('2020')).toBeCloseToPixel(start + slice * (2020 - 2012));
|
|
expect(scale.getPixelForValue('2025')).toBeCloseToPixel(start + slice * (2025 - 2012));
|
|
expect(scale.getPixelForValue('2042')).toBeCloseToPixel(start + slice * (2042 - 2012));
|
|
});
|
|
});
|
|
});
|
|
|
|
describe('when bounds', function() {
|
|
describe('is "data"', function() {
|
|
it ('should preserve the data range', function() {
|
|
var chart = window.acquireChart({
|
|
type: 'line',
|
|
data: {
|
|
labels: ['02/20 08:00', '02/21 09:00', '02/22 10:00', '02/23 11:00'],
|
|
datasets: [{data: [0, 1, 2, 3, 4, 5]}]
|
|
},
|
|
options: {
|
|
scales: {
|
|
xAxes: [{
|
|
id: 'x',
|
|
type: 'time',
|
|
bounds: 'data',
|
|
time: {
|
|
parser: 'MM/DD HH:mm',
|
|
unit: 'day'
|
|
}
|
|
}],
|
|
yAxes: [{
|
|
display: false
|
|
}]
|
|
}
|
|
}
|
|
});
|
|
|
|
var scale = chart.scales.x;
|
|
|
|
expect(scale.min).toEqual(+moment('02/20 08:00', 'MM/DD HH:mm'));
|
|
expect(scale.max).toEqual(+moment('02/23 11:00', 'MM/DD HH:mm'));
|
|
expect(scale.getPixelForValue('02/20 08:00')).toBeCloseToPixel(scale.left);
|
|
expect(scale.getPixelForValue('02/23 11:00')).toBeCloseToPixel(scale.left + scale.width);
|
|
expect(getTicksLabels(scale)).toEqual([
|
|
'Feb 21', 'Feb 22', 'Feb 23']);
|
|
});
|
|
});
|
|
|
|
describe('is "labels"', function() {
|
|
it('should preserve the label range', function() {
|
|
var chart = window.acquireChart({
|
|
type: 'line',
|
|
data: {
|
|
labels: ['02/20 08:00', '02/21 09:00', '02/22 10:00', '02/23 11:00'],
|
|
datasets: [{data: [0, 1, 2, 3, 4, 5]}]
|
|
},
|
|
options: {
|
|
scales: {
|
|
xAxes: [{
|
|
id: 'x',
|
|
type: 'time',
|
|
bounds: 'ticks',
|
|
time: {
|
|
parser: 'MM/DD HH:mm',
|
|
unit: 'day'
|
|
}
|
|
}],
|
|
yAxes: [{
|
|
display: false
|
|
}]
|
|
}
|
|
}
|
|
});
|
|
|
|
var scale = chart.scales.x;
|
|
var ticks = scale.getTicks();
|
|
|
|
expect(scale.min).toEqual(ticks[0].value);
|
|
expect(scale.max).toEqual(ticks[ticks.length - 1].value);
|
|
expect(scale.getPixelForValue('02/20 08:00')).toBeCloseToPixel(60);
|
|
expect(scale.getPixelForValue('02/23 11:00')).toBeCloseToPixel(426);
|
|
expect(getTicksLabels(scale)).toEqual([
|
|
'Feb 20', 'Feb 21', 'Feb 22', 'Feb 23', 'Feb 24']);
|
|
});
|
|
});
|
|
});
|
|
|
|
describe('when time.min and/or time.max are defined', function() {
|
|
['auto', 'data', 'labels'].forEach(function(source) {
|
|
['data', 'ticks'].forEach(function(bounds) {
|
|
describe('and ticks.source is "' + source + '" and bounds "' + bounds + '"', function() {
|
|
beforeEach(function() {
|
|
this.chart = window.acquireChart({
|
|
type: 'line',
|
|
data: {
|
|
labels: ['02/20 08:00', '02/21 09:00', '02/22 10:00', '02/23 11:00'],
|
|
datasets: [{data: [0, 1, 2, 3, 4, 5]}]
|
|
},
|
|
options: {
|
|
scales: {
|
|
xAxes: [{
|
|
id: 'x',
|
|
type: 'time',
|
|
bounds: bounds,
|
|
time: {
|
|
parser: 'MM/DD HH:mm',
|
|
unit: 'day'
|
|
},
|
|
ticks: {
|
|
source: source
|
|
}
|
|
}],
|
|
yAxes: [{
|
|
display: false
|
|
}]
|
|
}
|
|
}
|
|
});
|
|
});
|
|
|
|
it ('should expand scale to the min/max range', function() {
|
|
var chart = this.chart;
|
|
var scale = chart.scales.x;
|
|
var options = chart.options.scales.xAxes[0];
|
|
var min = '02/19 07:00';
|
|
var max = '02/24 08:00';
|
|
|
|
options.time.min = min;
|
|
options.time.max = max;
|
|
chart.update();
|
|
|
|
expect(scale.min).toEqual(+moment(min, 'MM/DD HH:mm'));
|
|
expect(scale.max).toEqual(+moment(max, 'MM/DD HH:mm'));
|
|
expect(scale.getPixelForValue(min)).toBeCloseToPixel(scale.left);
|
|
expect(scale.getPixelForValue(max)).toBeCloseToPixel(scale.left + scale.width);
|
|
scale.getTicks().forEach(function(tick) {
|
|
expect(tick.value >= +moment(min, 'MM/DD HH:mm')).toBeTruthy();
|
|
expect(tick.value <= +moment(max, 'MM/DD HH:mm')).toBeTruthy();
|
|
});
|
|
});
|
|
it ('should shrink scale to the min/max range', function() {
|
|
var chart = this.chart;
|
|
var scale = chart.scales.x;
|
|
var options = chart.options.scales.xAxes[0];
|
|
var min = '02/21 07:00';
|
|
var max = '02/22 20:00';
|
|
|
|
options.time.min = min;
|
|
options.time.max = max;
|
|
chart.update();
|
|
|
|
expect(scale.min).toEqual(+moment(min, 'MM/DD HH:mm'));
|
|
expect(scale.max).toEqual(+moment(max, 'MM/DD HH:mm'));
|
|
expect(scale.getPixelForValue(min)).toBeCloseToPixel(scale.left);
|
|
expect(scale.getPixelForValue(max)).toBeCloseToPixel(scale.left + scale.width);
|
|
scale.getTicks().forEach(function(tick) {
|
|
expect(tick.value >= +moment(min, 'MM/DD HH:mm')).toBeTruthy();
|
|
expect(tick.value <= +moment(max, 'MM/DD HH:mm')).toBeTruthy();
|
|
});
|
|
});
|
|
});
|
|
});
|
|
});
|
|
});
|
|
|
|
['auto', 'data', 'labels'].forEach(function(source) {
|
|
['series', 'linear'].forEach(function(distribution) {
|
|
describe('when ticks.source is "' + source + '" and distribution is "' + distribution + '"', function() {
|
|
beforeEach(function() {
|
|
this.chart = window.acquireChart({
|
|
type: 'line',
|
|
data: {
|
|
labels: ['2017', '2019', '2020', '2025', '2042'],
|
|
datasets: [{data: [0, 1, 2, 3, 4, 5]}]
|
|
},
|
|
options: {
|
|
scales: {
|
|
xAxes: [{
|
|
id: 'x',
|
|
type: 'time',
|
|
time: {
|
|
parser: 'YYYY'
|
|
},
|
|
ticks: {
|
|
source: source
|
|
},
|
|
distribution: distribution
|
|
}]
|
|
}
|
|
}
|
|
});
|
|
});
|
|
|
|
it ('should not add offset from the edges', function() {
|
|
var scale = this.chart.scales.x;
|
|
|
|
expect(scale.getPixelForValue('2017')).toBeCloseToPixel(scale.left);
|
|
expect(scale.getPixelForValue('2042')).toBeCloseToPixel(scale.left + scale.width);
|
|
});
|
|
|
|
it ('should add offset from the edges if offset is true', function() {
|
|
var chart = this.chart;
|
|
var scale = chart.scales.x;
|
|
var options = chart.options.scales.xAxes[0];
|
|
|
|
options.offset = true;
|
|
chart.update();
|
|
|
|
var numTicks = scale.ticks.length;
|
|
var firstTickInterval = scale.getPixelForTick(1) - scale.getPixelForTick(0);
|
|
var lastTickInterval = scale.getPixelForTick(numTicks - 1) - scale.getPixelForTick(numTicks - 2);
|
|
|
|
expect(scale.getPixelForValue('2017')).toBeCloseToPixel(scale.left + firstTickInterval / 2);
|
|
expect(scale.getPixelForValue('2042')).toBeCloseToPixel(scale.left + scale.width - lastTickInterval / 2);
|
|
});
|
|
|
|
it ('should not add offset if min and max extend the labels range', function() {
|
|
var chart = this.chart;
|
|
var scale = chart.scales.x;
|
|
var options = chart.options.scales.xAxes[0];
|
|
|
|
options.time.min = '2012';
|
|
options.time.max = '2051';
|
|
chart.update();
|
|
|
|
expect(scale.getPixelForValue('2012')).toBeCloseToPixel(scale.left);
|
|
expect(scale.getPixelForValue('2051')).toBeCloseToPixel(scale.left + scale.width);
|
|
});
|
|
|
|
it ('should not add offset if min and max extend the labels range and offset is true', function() {
|
|
var chart = this.chart;
|
|
var scale = chart.scales.x;
|
|
var options = chart.options.scales.xAxes[0];
|
|
|
|
options.time.min = '2012';
|
|
options.time.max = '2051';
|
|
options.offset = true;
|
|
chart.update();
|
|
|
|
expect(scale.getPixelForValue('2012')).toBeCloseToPixel(scale.left);
|
|
expect(scale.getPixelForValue('2051')).toBeCloseToPixel(scale.left + scale.width);
|
|
});
|
|
});
|
|
});
|
|
});
|
|
});
|