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describe('Chart', function() {
// https://github.com/chartjs/Chart.js/issues/2481
// See global.deprecations.tests.js for backward compatibility
it('should be defined and prototype of chart instances', function() {
var chart = acquireChart({});
expect(Chart).toBeDefined();
expect(Chart instanceof Object).toBeTruthy();
expect(chart.constructor).toBe(Chart);
expect(chart instanceof Chart).toBeTruthy();
expect(Chart.prototype.isPrototypeOf(chart)).toBeTruthy();
});
describe('config initialization', function() {
it('should create missing config.data properties', function() {
var chart = acquireChart({});
var data = chart.data;
expect(data instanceof Object).toBeTruthy();
expect(data.labels instanceof Array).toBeTruthy();
expect(data.labels.length).toBe(0);
expect(data.datasets instanceof Array).toBeTruthy();
expect(data.datasets.length).toBe(0);
});
it('should not alter config.data references', function() {
var ds0 = {data: [10, 11, 12, 13]};
var ds1 = {data: [20, 21, 22, 23]};
var datasets = [ds0, ds1];
var labels = [0, 1, 2, 3];
var data = {labels: labels, datasets: datasets};
var chart = acquireChart({
type: 'line',
data: data
});
expect(chart.data).toBe(data);
expect(chart.data.labels).toBe(labels);
expect(chart.data.datasets).toBe(datasets);
expect(chart.data.datasets[0]).toBe(ds0);
expect(chart.data.datasets[1]).toBe(ds1);
expect(chart.data.datasets[0].data).toBe(ds0.data);
expect(chart.data.datasets[1].data).toBe(ds1.data);
});
it('should define chart.data as an alias for config.data', function() {
var config = {data: {labels: [], datasets: []}};
var chart = acquireChart(config);
expect(chart.data).toBe(config.data);
chart.data = {labels: [1, 2, 3], datasets: [{data: [4, 5, 6]}]};
expect(config.data).toBe(chart.data);
expect(config.data.labels).toEqual([1, 2, 3]);
expect(config.data.datasets[0].data).toEqual([4, 5, 6]);
config.data = {labels: [7, 8, 9], datasets: [{data: [10, 11, 12]}]};
expect(chart.data).toBe(config.data);
expect(chart.data.labels).toEqual([7, 8, 9]);
expect(chart.data.datasets[0].data).toEqual([10, 11, 12]);
});
it('should initialize config with default options', function() {
var callback = function() {};
var defaults = Chart.defaults;
defaults.global.responsiveAnimationDuration = 42;
defaults.global.hover.onHover = callback;
defaults.line.hover.mode = 'x-axis';
defaults.line.spanGaps = true;
var chart = acquireChart({
type: 'line'
});
var options = chart.options;
expect(options.defaultFontSize).toBe(defaults.global.defaultFontSize);
expect(options.showLines).toBe(defaults.line.showLines);
expect(options.spanGaps).toBe(true);
expect(options.responsiveAnimationDuration).toBe(42);
expect(options.hover.onHover).toBe(callback);
expect(options.hover.mode).toBe('x-axis');
});
it('should override default options', function() {
var defaults = Chart.defaults;
defaults.global.responsiveAnimationDuration = 42;
defaults.line.hover.mode = 'x-axis';
defaults.line.spanGaps = true;
var chart = acquireChart({
type: 'line',
options: {
responsiveAnimationDuration: 4242,
spanGaps: false,
hover: {
mode: 'dataset',
},
title: {
position: 'bottom'
}
}
});
var options = chart.options;
expect(options.responsiveAnimationDuration).toBe(4242);
expect(options.spanGaps).toBe(false);
expect(options.hover.mode).toBe('dataset');
expect(options.title.position).toBe('bottom');
});
it('should override axis positions that are incorrect', function() {
var chart = acquireChart({
type: 'line',
options: {
scales: {
xAxes: [{
position: 'left',
}],
yAxes: [{
position: 'bottom'
}]
}
}
});
var scaleOptions = chart.options.scales;
expect(scaleOptions.xAxes[0].position).toBe('bottom');
expect(scaleOptions.yAxes[0].position).toBe('left');
});
it('should throw an error if the chart type is incorrect', function() {
function createChart() {
acquireChart({
type: 'area',
data: {
datasets: [{
label: 'first',
data: [10, 20]
}],
labels: ['0', '1'],
},
options: {
scales: {
xAxes: [{
position: 'left',
}],
yAxes: [{
position: 'bottom'
}]
}
}
});
}
expect(createChart).toThrow(new Error('"area" is not a chart type.'));
});
});
describe('when merging scale options', function() {
beforeEach(function() {
Chart.helpers.merge(Chart.defaults.scale, {
_jasmineCheckA: 'a0',
_jasmineCheckB: 'b0',
_jasmineCheckC: 'c0'
});
Chart.helpers.merge(Chart.scaleService.defaults.logarithmic, {
_jasmineCheckB: 'b1',
_jasmineCheckC: 'c1',
});
});
afterEach(function() {
delete Chart.defaults.scale._jasmineCheckA;
delete Chart.defaults.scale._jasmineCheckB;
delete Chart.defaults.scale._jasmineCheckC;
delete Chart.scaleService.defaults.logarithmic._jasmineCheckB;
delete Chart.scaleService.defaults.logarithmic._jasmineCheckC;
});
it('should default to "category" for x scales and "linear" for y scales', function() {
var chart = acquireChart({
type: 'line',
options: {
scales: {
xAxes: [
{id: 'foo0'},
{id: 'foo1'}
],
yAxes: [
{id: 'bar0'},
{id: 'bar1'}
]
}
}
});
expect(chart.scales.foo0.type).toBe('category');
expect(chart.scales.foo1.type).toBe('category');
expect(chart.scales.bar0.type).toBe('linear');
expect(chart.scales.bar1.type).toBe('linear');
});
it('should correctly apply defaults on central scale', function() {
var chart = acquireChart({
type: 'line',
options: {
scale: {
id: 'foo',
type: 'logarithmic',
_jasmineCheckC: 'c2',
_jasmineCheckD: 'd2'
}
}
});
// let's check a few values from the user options and defaults
expect(chart.scales.foo.type).toBe('logarithmic');
expect(chart.scales.foo.options).toBe(chart.options.scale);
expect(chart.scales.foo.options).toEqual(
jasmine.objectContaining({
_jasmineCheckA: 'a0',
_jasmineCheckB: 'b1',
_jasmineCheckC: 'c2',
_jasmineCheckD: 'd2'
}));
});
it('should correctly apply defaults on xy scales', function() {
var chart = acquireChart({
type: 'line',
options: {
scales: {
xAxes: [{
id: 'foo',
type: 'logarithmic',
_jasmineCheckC: 'c2',
_jasmineCheckD: 'd2'
}],
yAxes: [{
id: 'bar',
type: 'time',
_jasmineCheckC: 'c2',
_jasmineCheckE: 'e2'
}]
}
}
});
expect(chart.scales.foo.type).toBe('logarithmic');
expect(chart.scales.foo.options).toBe(chart.options.scales.xAxes[0]);
expect(chart.scales.foo.options).toEqual(
jasmine.objectContaining({
_jasmineCheckA: 'a0',
_jasmineCheckB: 'b1',
_jasmineCheckC: 'c2',
_jasmineCheckD: 'd2'
}));
expect(chart.scales.bar.type).toBe('time');
expect(chart.scales.bar.options).toBe(chart.options.scales.yAxes[0]);
expect(chart.scales.bar.options).toEqual(
jasmine.objectContaining({
_jasmineCheckA: 'a0',
_jasmineCheckB: 'b0',
_jasmineCheckC: 'c2',
_jasmineCheckE: 'e2'
}));
});
it('should not alter defaults when merging config', function() {
var chart = acquireChart({
type: 'line',
options: {
_jasmineCheck: 42,
scales: {
xAxes: [{
id: 'foo',
type: 'linear',
_jasmineCheck: 42,
}],
yAxes: [{
id: 'bar',
type: 'category',
_jasmineCheck: 42,
}]
}
}
});
expect(chart.options._jasmineCheck).toBeDefined();
expect(chart.scales.foo.options._jasmineCheck).toBeDefined();
expect(chart.scales.bar.options._jasmineCheck).toBeDefined();
expect(Chart.defaults.line._jasmineCheck).not.toBeDefined();
expect(Chart.defaults.global._jasmineCheck).not.toBeDefined();
expect(Chart.scaleService.defaults.linear._jasmineCheck).not.toBeDefined();
expect(Chart.scaleService.defaults.category._jasmineCheck).not.toBeDefined();
});
});
describe('config.options.responsive: false', function() {
it('should not inject the resizer element', function() {
var chart = acquireChart({
options: {
responsive: false
}
});
var wrapper = chart.canvas.parentNode;
expect(wrapper.childNodes.length).toBe(1);
expect(wrapper.firstChild.tagName).toBe('CANVAS');
});
});
describe('config.options.responsive: true (maintainAspectRatio: false)', function() {
it('should fill parent width and height', function() {
var chart = acquireChart({
options: {
responsive: true,
maintainAspectRatio: false
}
}, {
canvas: {
style: 'width: 150px; height: 245px'
},
wrapper: {
style: 'width: 300px; height: 350px'
}
});
expect(chart).toBeChartOfSize({
dw: 300, dh: 350,
rw: 300, rh: 350,
});
});
it('should resize the canvas when parent width changes', function(done) {
var chart = acquireChart({
options: {
responsive: true,
maintainAspectRatio: false
}
}, {
canvas: {
style: ''
},
wrapper: {
style: 'width: 300px; height: 350px; position: relative'
}
});
expect(chart).toBeChartOfSize({
dw: 300, dh: 350,
rw: 300, rh: 350,
});
var wrapper = chart.canvas.parentNode;
wrapper.style.width = '455px';
waitForResize(chart, function() {
expect(chart).toBeChartOfSize({
dw: 455, dh: 350,
rw: 455, rh: 350,
});
wrapper.style.width = '150px';
waitForResize(chart, function() {
expect(chart).toBeChartOfSize({
dw: 150, dh: 350,
rw: 150, rh: 350,
});
done();
});
});
});
it('should resize the canvas when parent is RTL and width changes', function(done) {
var chart = acquireChart({
options: {
responsive: true,
maintainAspectRatio: false
}
}, {
canvas: {
style: ''
},
wrapper: {
style: 'width: 300px; height: 350px; position: relative; direction: rtl'
}
});
expect(chart).toBeChartOfSize({
dw: 300, dh: 350,
rw: 300, rh: 350,
});
var wrapper = chart.canvas.parentNode;
wrapper.style.width = '455px';
waitForResize(chart, function() {
expect(chart).toBeChartOfSize({
dw: 455, dh: 350,
rw: 455, rh: 350,
});
wrapper.style.width = '150px';
waitForResize(chart, function() {
expect(chart).toBeChartOfSize({
dw: 150, dh: 350,
rw: 150, rh: 350,
});
done();
});
});
});
it('should resize the canvas when parent height changes', function(done) {
var chart = acquireChart({
options: {
responsive: true,
maintainAspectRatio: false
}
}, {
canvas: {
style: ''
},
wrapper: {
style: 'width: 300px; height: 350px; position: relative'
}
});
expect(chart).toBeChartOfSize({
dw: 300, dh: 350,
rw: 300, rh: 350,
});
var wrapper = chart.canvas.parentNode;
wrapper.style.height = '455px';
waitForResize(chart, function() {
expect(chart).toBeChartOfSize({
dw: 300, dh: 455,
rw: 300, rh: 455,
});
wrapper.style.height = '150px';
waitForResize(chart, function() {
expect(chart).toBeChartOfSize({
dw: 300, dh: 150,
rw: 300, rh: 150,
});
done();
});
});
});
it('should not include parent padding when resizing the canvas', function(done) {
var chart = acquireChart({
type: 'line',
options: {
responsive: true,
maintainAspectRatio: false
}
}, {
canvas: {
style: ''
},
wrapper: {
style: 'padding: 50px; width: 320px; height: 350px; position: relative'
}
});
expect(chart).toBeChartOfSize({
dw: 320, dh: 350,
rw: 320, rh: 350,
});
var wrapper = chart.canvas.parentNode;
wrapper.style.height = '355px';
wrapper.style.width = '455px';
waitForResize(chart, function() {
expect(chart).toBeChartOfSize({
dw: 455, dh: 355,
rw: 455, rh: 355,
});
done();
});
});
it('should resize the canvas when the canvas display style changes from "none" to "block"', function(done) {
var chart = acquireChart({
options: {
responsive: true,
maintainAspectRatio: false
}
}, {
canvas: {
style: 'display: none;'
},
wrapper: {
style: 'width: 320px; height: 350px'
}
});
var canvas = chart.canvas;
canvas.style.display = 'block';
waitForResize(chart, function() {
expect(chart).toBeChartOfSize({
dw: 320, dh: 350,
rw: 320, rh: 350,
});
done();
});
});
it('should resize the canvas when the wrapper display style changes from "none" to "block"', function(done) {
var chart = acquireChart({
options: {
responsive: true,
maintainAspectRatio: false
}
}, {
canvas: {
style: ''
},
wrapper: {
style: 'display: none; width: 460px; height: 380px'
}
});
var wrapper = chart.canvas.parentNode;
wrapper.style.display = 'block';
waitForResize(chart, function() {
expect(chart).toBeChartOfSize({
dw: 460, dh: 380,
rw: 460, rh: 380,
});
done();
});
});
// https://github.com/chartjs/Chart.js/issues/3790
it('should resize the canvas if attached to the DOM after construction', function(done) {
var canvas = document.createElement('canvas');
var wrapper = document.createElement('div');
var body = window.document.body;
var chart = new Chart(canvas, {
type: 'line',
options: {
responsive: true,
maintainAspectRatio: false
}
});
expect(chart).toBeChartOfSize({
dw: 0, dh: 0,
rw: 0, rh: 0,
});
wrapper.style.cssText = 'width: 455px; height: 355px';
wrapper.appendChild(canvas);
body.appendChild(wrapper);
waitForResize(chart, function() {
expect(chart).toBeChartOfSize({
dw: 455, dh: 355,
rw: 455, rh: 355,
});
body.removeChild(wrapper);
chart.destroy();
done();
});
});
it('should resize the canvas when attached to a different parent', function(done) {
var canvas = document.createElement('canvas');
var wrapper = document.createElement('div');
var body = window.document.body;
var chart = new Chart(canvas, {
type: 'line',
options: {
responsive: true,
maintainAspectRatio: false
}
});
expect(chart).toBeChartOfSize({
dw: 0, dh: 0,
rw: 0, rh: 0,
});
wrapper.style.cssText = 'width: 455px; height: 355px';
wrapper.appendChild(canvas);
body.appendChild(wrapper);
waitForResize(chart, function() {
var resizer = wrapper.firstChild;
expect(resizer.className).toBe('chartjs-size-monitor');
expect(resizer.tagName).toBe('DIV');
expect(chart).toBeChartOfSize({
dw: 455, dh: 355,
rw: 455, rh: 355,
});
var target = document.createElement('div');
target.style.cssText = 'width: 640px; height: 480px';
target.appendChild(canvas);
body.appendChild(target);
waitForResize(chart, function() {
expect(target.firstChild).toBe(resizer);
expect(wrapper.firstChild).toBe(null);
expect(chart).toBeChartOfSize({
dw: 640, dh: 480,
rw: 640, rh: 480,
});
body.removeChild(wrapper);
body.removeChild(target);
chart.destroy();
done();
});
});
});
// https://github.com/chartjs/Chart.js/issues/3521
it('should resize the canvas after the wrapper has been re-attached to the DOM', function(done) {
var chart = acquireChart({
options: {
responsive: true,
maintainAspectRatio: false
}
}, {
canvas: {
style: ''
},
wrapper: {
style: 'width: 320px; height: 350px'
}
});
expect(chart).toBeChartOfSize({
dw: 320, dh: 350,
rw: 320, rh: 350,
});
var wrapper = chart.canvas.parentNode;
var parent = wrapper.parentNode;
parent.removeChild(wrapper);
parent.appendChild(wrapper);
wrapper.style.height = '355px';
waitForResize(chart, function() {
expect(chart).toBeChartOfSize({
dw: 320, dh: 355,
rw: 320, rh: 355,
});
parent.removeChild(wrapper);
wrapper.style.width = '455px';
parent.appendChild(wrapper);
waitForResize(chart, function() {
expect(chart).toBeChartOfSize({
dw: 455, dh: 355,
rw: 455, rh: 355,
});
done();
});
});
});
// https://github.com/chartjs/Chart.js/issues/4737
it('should resize the canvas when re-creating the chart', function(done) {
var chart = acquireChart({
options: {
responsive: true
}
}, {
wrapper: {
style: 'width: 320px'
}
});
waitForResize(chart, function() {
var canvas = chart.canvas;
expect(chart).toBeChartOfSize({
dw: 320, dh: 320,
rw: 320, rh: 320,
});
chart.destroy();
chart = new Chart(canvas, {
type: 'line',
options: {
responsive: true
}
});
canvas.parentNode.style.width = '455px';
waitForResize(chart, function() {
expect(chart).toBeChartOfSize({
dw: 455, dh: 455,
rw: 455, rh: 455,
});
done();
});
});
});
});
describe('config.options.responsive: true (maintainAspectRatio: true)', function() {
it('should resize the canvas with correct aspect ratio when parent width changes', function(done) {
var chart = acquireChart({
type: 'line', // AR == 2
options: {
responsive: true,
maintainAspectRatio: true
}
}, {
canvas: {
style: ''
},
wrapper: {
style: 'width: 300px; height: 350px; position: relative'
}
});
expect(chart).toBeChartOfSize({
dw: 300, dh: 150,
rw: 300, rh: 150,
});
var wrapper = chart.canvas.parentNode;
wrapper.style.width = '450px';
waitForResize(chart, function() {
expect(chart).toBeChartOfSize({
dw: 450, dh: 225,
rw: 450, rh: 225,
});
wrapper.style.width = '150px';
waitForResize(chart, function() {
expect(chart).toBeChartOfSize({
dw: 150, dh: 75,
rw: 150, rh: 75,
});
done();
});
});
});
it('should not resize the canvas when parent height changes', function(done) {
var chart = acquireChart({
options: {
responsive: true,
maintainAspectRatio: true
}
}, {
canvas: {
style: ''
},
wrapper: {
style: 'width: 320px; height: 350px; position: relative'
}
});
expect(chart).toBeChartOfSize({
dw: 320, dh: 160,
rw: 320, rh: 160,
});
var wrapper = chart.canvas.parentNode;
wrapper.style.height = '455px';
waitForResize(chart, function() {
expect(chart).toBeChartOfSize({
dw: 320, dh: 160,
rw: 320, rh: 160,
});
wrapper.style.height = '150px';
waitForResize(chart, function() {
expect(chart).toBeChartOfSize({
dw: 320, dh: 160,
rw: 320, rh: 160,
});
done();
});
});
});
});
describe('Retina scale (a.k.a. device pixel ratio)', function() {
beforeEach(function() {
this.devicePixelRatio = window.devicePixelRatio;
window.devicePixelRatio = 3;
});
afterEach(function() {
window.devicePixelRatio = this.devicePixelRatio;
});
// see https://github.com/chartjs/Chart.js/issues/3575
it ('should scale the render size but not the "implicit" display size', function() {
var chart = acquireChart({
options: {
responsive: false
}
}, {
canvas: {
width: 320,
height: 240,
}
});
expect(chart).toBeChartOfSize({
dw: 320, dh: 240,
rw: 960, rh: 720,
});
});
it ('should scale the render size but not the "explicit" display size', function() {
var chart = acquireChart({
options: {
responsive: false
}
}, {
canvas: {
style: 'width: 320px; height: 240px'
}
});
expect(chart).toBeChartOfSize({
dw: 320, dh: 240,
rw: 960, rh: 720,
});
});
});
describe('config.options.devicePixelRatio', function() {
beforeEach(function() {
this.devicePixelRatio = window.devicePixelRatio;
window.devicePixelRatio = 1;
});
afterEach(function() {
window.devicePixelRatio = this.devicePixelRatio;
});
// see https://github.com/chartjs/Chart.js/issues/3575
it ('should scale the render size but not the "implicit" display size', function() {
var chart = acquireChart({
options: {
responsive: false,
devicePixelRatio: 3
}
}, {
canvas: {
width: 320,
height: 240,
}
});
expect(chart).toBeChartOfSize({
dw: 320, dh: 240,
rw: 960, rh: 720,
});
});
it ('should scale the render size but not the "explicit" display size', function() {
var chart = acquireChart({
options: {
responsive: false,
devicePixelRatio: 3
}
}, {
canvas: {
style: 'width: 320px; height: 240px'
}
});
expect(chart).toBeChartOfSize({
dw: 320, dh: 240,
rw: 960, rh: 720,
});
});
});
describe('controller.destroy', function() {
it('should remove the resizer element when responsive: true', function(done) {
var chart = acquireChart({
options: {
responsive: true
}
});
waitForResize(chart, function() {
var wrapper = chart.canvas.parentNode;
var resizer = wrapper.firstChild;
expect(wrapper.childNodes.length).toBe(2);
expect(resizer.className).toBe('chartjs-size-monitor');
expect(resizer.tagName).toBe('DIV');
chart.destroy();
expect(wrapper.childNodes.length).toBe(1);
expect(wrapper.firstChild.tagName).toBe('CANVAS');
done();
});
});
});
describe('controller.reset', function() {
it('should reset the chart elements', function() {
var chart = acquireChart({
type: 'line',
data: {
labels: ['A', 'B', 'C', 'D'],
datasets: [{
data: [10, 20, 30, 0]
}]
},
options: {
responsive: true
}
});
var meta = chart.getDatasetMeta(0);
// Verify that points are at their initial correct location,
// then we will reset and see that they moved
expect(meta.data[0]._model.y).toBeCloseToPixel(333);
expect(meta.data[1]._model.y).toBeCloseToPixel(183);
expect(meta.data[2]._model.y).toBeCloseToPixel(32);
expect(meta.data[3]._model.y).toBeCloseToPixel(482);
chart.reset();
// For a line chart, the animation state is the bottom
expect(meta.data[0]._model.y).toBeCloseToPixel(482);
expect(meta.data[1]._model.y).toBeCloseToPixel(482);
expect(meta.data[2]._model.y).toBeCloseToPixel(482);
expect(meta.data[3]._model.y).toBeCloseToPixel(482);
});
});
describe('config update', function() {
it ('should update options', function() {
var chart = acquireChart({
type: 'line',
data: {
labels: ['A', 'B', 'C', 'D'],
datasets: [{
data: [10, 20, 30, 100]
}]
},
options: {
responsive: true
}
});
chart.options = {
responsive: false,
scales: {
yAxes: [{
ticks: {
min: 0,
max: 10
}
}]
}
};
chart.update();
var yScale = chart.scales['y-axis-0'];
expect(yScale.options.ticks.min).toBe(0);
expect(yScale.options.ticks.max).toBe(10);
});
it ('should update scales options', function() {
var chart = acquireChart({
type: 'line',
data: {
labels: ['A', 'B', 'C', 'D'],
datasets: [{
data: [10, 20, 30, 100]
}]
},
options: {
responsive: true
}
});
chart.options.scales.yAxes[0].ticks.min = 0;
chart.options.scales.yAxes[0].ticks.max = 10;
chart.update();
var yScale = chart.scales['y-axis-0'];
expect(yScale.options.ticks.min).toBe(0);
expect(yScale.options.ticks.max).toBe(10);
});
it ('should update scales options from new object', function() {
var chart = acquireChart({
type: 'line',
data: {
labels: ['A', 'B', 'C', 'D'],
datasets: [{
data: [10, 20, 30, 100]
}]
},
options: {
responsive: true
}
});
var newScalesConfig = {
yAxes: [{
ticks: {
min: 0,
max: 10
}
}]
};
chart.options.scales = newScalesConfig;
chart.update();
var yScale = chart.scales['y-axis-0'];
expect(yScale.options.ticks.min).toBe(0);
expect(yScale.options.ticks.max).toBe(10);
});
it ('should remove discarded scale', function() {
var chart = acquireChart({
type: 'line',
data: {
labels: ['A', 'B', 'C', 'D'],
datasets: [{
data: [10, 20, 30, 100]
}]
},
options: {
responsive: true,
scales: {
yAxes: [{
id: 'yAxis0',
ticks: {
min: 0,
max: 10
}
}]
}
}
});
var newScalesConfig = {
yAxes: [{
ticks: {
min: 0,
max: 10
}
}]
};
chart.options.scales = newScalesConfig;
chart.update();
var yScale = chart.scales.yAxis0;
expect(yScale).toBeUndefined();
var newyScale = chart.scales['y-axis-0'];
expect(newyScale.options.ticks.min).toBe(0);
expect(newyScale.options.ticks.max).toBe(10);
});
it ('should update tooltip options', function() {
var chart = acquireChart({
type: 'line',
data: {
labels: ['A', 'B', 'C', 'D'],
datasets: [{
data: [10, 20, 30, 100]
}]
},
options: {
responsive: true
}
});
var newTooltipConfig = {
mode: 'dataset',
intersect: false
};
chart.options.tooltips = newTooltipConfig;
chart.update();
expect(chart.tooltip._options).toEqual(jasmine.objectContaining(newTooltipConfig));
});
it ('should reset the tooltip on update', function() {
var chart = acquireChart({
type: 'line',
data: {
labels: ['A', 'B', 'C', 'D'],
datasets: [{
data: [10, 20, 30, 100]
}]
},
options: {
responsive: true,
tooltip: {
mode: 'nearest'
}
}
});
// Trigger an event over top of a point to
// put an item into the tooltip
var meta = chart.getDatasetMeta(0);
var point = meta.data[1];
jasmine.triggerMouseEvent(chart, 'mousemove', point);
// Check and see if tooltip was displayed
var tooltip = chart.tooltip;
expect(chart.lastActive).toEqual([point]);
expect(tooltip._lastActive).toEqual([point]);
// Update and confirm tooltip is reset
chart.update();
expect(chart.lastActive).toEqual([]);
expect(tooltip._lastActive).toEqual([]);
});
it ('should update the metadata', function() {
var cfg = {
data: {
labels: ['A', 'B', 'C', 'D'],
datasets: [{
type: 'line',
data: [10, 20, 30, 0]
}]
},
options: {
responsive: true,
scales: {
xAxes: [{
type: 'time'
}],
yAxes: [{
scaleLabel: {
display: true,
labelString: 'Value'
}
}]
}
}
};
var chart = acquireChart(cfg);
var meta = chart.getDatasetMeta(0);
expect(meta.type).toBe('line');
// change the dataset to bar and check that meta was updated
chart.config.data.datasets[0].type = 'bar';
chart.update();
meta = chart.getDatasetMeta(0);
expect(meta.type).toBe('bar');
});
});
describe('plugin.extensions', function() {
it ('should notify plugin in correct order', function(done) {
var plugin = this.plugin = {};
var sequence = [];
var hooks = {
init: [
'beforeInit',
'afterInit'
],
update: [
'beforeUpdate',
'beforeLayout',
'afterLayout',
'beforeDatasetsUpdate',
'beforeDatasetUpdate',
'afterDatasetUpdate',
'afterDatasetsUpdate',
'afterUpdate',
],
render: [
'beforeRender',
'beforeDraw',
'beforeDatasetsDraw',
'beforeDatasetDraw',
'afterDatasetDraw',
'afterDatasetsDraw',
'beforeTooltipDraw',
'afterTooltipDraw',
'afterDraw',
'afterRender',
],
resize: [
'resize'
],
destroy: [
'destroy'
]
};
Object.keys(hooks).forEach(function(group) {
hooks[group].forEach(function(name) {
plugin[name] = function() {
sequence.push(name);
};
});
});
var chart = window.acquireChart({
type: 'line',
data: {datasets: [{}]},
plugins: [plugin],
options: {
responsive: true
}
}, {
wrapper: {
style: 'width: 300px'
}
});
chart.canvas.parentNode.style.width = '400px';
waitForResize(chart, function() {
chart.destroy();
expect(sequence).toEqual([].concat(
hooks.init,
hooks.update,
hooks.render,
hooks.resize,
hooks.update,
hooks.render,
hooks.destroy
));
done();
});
});
it('should not notify before/afterDatasetDraw if dataset is hidden', function() {
var sequence = [];
var plugin = this.plugin = {
beforeDatasetDraw: function(chart, args) {
sequence.push('before-' + args.index);
},
afterDatasetDraw: function(chart, args) {
sequence.push('after-' + args.index);
}
};
window.acquireChart({
type: 'line',
data: {datasets: [{}, {hidden: true}, {}]},
plugins: [plugin]
});
expect(sequence).toEqual([
'before-2', 'after-2',
'before-0', 'after-0'
]);
});
});
describe('controller.update', function() {
beforeEach(function() {
this.chart = acquireChart({
type: 'doughnut',
options: {
animation: {
easing: 'linear',
duration: 500
}
}
});
this.addAnimationSpy = spyOn(Chart.animationService, 'addAnimation');
});
it('should add an animation with the default options', function() {
this.chart.update();
expect(this.addAnimationSpy).toHaveBeenCalledWith(
this.chart,
jasmine.objectContaining({easing: 'linear'}),
500,
undefined
);
});
it('should add an animation with the provided options', function() {
this.chart.update({
duration: 800,
easing: 'easeOutBounce',
lazy: false,
});
expect(this.addAnimationSpy).toHaveBeenCalledWith(
this.chart,
jasmine.objectContaining({easing: 'easeOutBounce'}),
800,
false
);
});
});
});