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describe('Linear Scale', function() {
it('Should register the constructor with the scale service', function() {
var Constructor = Chart.scaleService.getScaleConstructor('linear');
expect(Constructor).not.toBe(undefined);
expect(typeof Constructor).toBe('function');
});
it('Should have the correct default config', function() {
var defaultConfig = Chart.scaleService.getScaleDefaults('linear');
expect(defaultConfig).toEqual({
display: true,
gridLines: {
color: 'rgba(0, 0, 0, 0.1)',
drawBorder: true,
drawOnChartArea: true,
drawTicks: true, // draw ticks extending towards the label
tickMarkLength: 10,
lineWidth: 1,
offsetGridLines: false,
display: true,
zeroLineColor: 'rgba(0,0,0,0.25)',
zeroLineWidth: 1,
zeroLineBorderDash: [],
zeroLineBorderDashOffset: 0.0,
borderDash: [],
borderDashOffset: 0.0
},
position: 'left',
offset: false,
scaleLabel: Chart.defaults.scale.scaleLabel,
ticks: {
beginAtZero: false,
minRotation: 0,
maxRotation: 50,
mirror: false,
padding: 0,
reverse: false,
display: true,
callback: defaultConfig.ticks.callback, // make this work nicer, then check below
autoSkip: true,
autoSkipPadding: 0,
labelOffset: 0,
minor: {},
major: {},
}
});
expect(defaultConfig.ticks.callback).toEqual(jasmine.any(Function));
});
it('Should correctly determine the max & min data values', function() {
var chart = window.acquireChart({
type: 'bar',
data: {
datasets: [{
yAxisID: 'yScale0',
data: [10, 5, 0, -5, 78, -100]
}, {
yAxisID: 'yScale1',
data: [-1000, 1000],
}, {
yAxisID: 'yScale0',
data: [150]
}],
labels: ['a', 'b', 'c', 'd', 'e', 'f']
},
options: {
scales: {
yAxes: [{
id: 'yScale0',
type: 'linear'
}, {
id: 'yScale1',
type: 'linear'
}]
}
}
});
expect(chart.scales.yScale0).not.toEqual(undefined); // must construct
expect(chart.scales.yScale0.min).toBe(-100);
expect(chart.scales.yScale0.max).toBe(150);
});
it('Should correctly determine the max & min of string data values', function() {
var chart = window.acquireChart({
type: 'bar',
data: {
datasets: [{
yAxisID: 'yScale0',
data: ['10', '5', '0', '-5', '78', '-100']
}, {
yAxisID: 'yScale1',
data: ['-1000', '1000'],
}, {
yAxisID: 'yScale0',
data: ['150']
}],
labels: ['a', 'b', 'c', 'd', 'e', 'f']
},
options: {
scales: {
yAxes: [{
id: 'yScale0',
type: 'linear'
}, {
id: 'yScale1',
type: 'linear'
}]
}
}
});
expect(chart.scales.yScale0).not.toEqual(undefined); // must construct
expect(chart.scales.yScale0.min).toBe(-100);
expect(chart.scales.yScale0.max).toBe(150);
});
it('Should correctly determine the max & min when no values provided and suggested minimum and maximum are set', function() {
var chart = window.acquireChart({
type: 'bar',
data: {
datasets: [{
yAxisID: 'yScale0',
data: []
}],
labels: ['a', 'b', 'c', 'd', 'e', 'f']
},
options: {
scales: {
yAxes: [{
id: 'yScale0',
type: 'linear',
ticks: {
suggestedMin: -10,
suggestedMax: 15
}
}]
}
}
});
expect(chart.scales.yScale0).not.toEqual(undefined); // must construct
expect(chart.scales.yScale0.min).toBe(-10);
expect(chart.scales.yScale0.max).toBe(15);
});
it('Should correctly determine the max & min data values ignoring hidden datasets', function() {
var chart = window.acquireChart({
type: 'bar',
data: {
datasets: [{
yAxisID: 'yScale0',
data: ['10', '5', '0', '-5', '78', '-100']
}, {
yAxisID: 'yScale1',
data: ['-1000', '1000'],
}, {
yAxisID: 'yScale0',
data: ['150'],
hidden: true
}],
labels: ['a', 'b', 'c', 'd', 'e', 'f']
},
options: {
scales: {
yAxes: [{
id: 'yScale0',
type: 'linear'
}, {
id: 'yScale1',
type: 'linear'
}]
}
}
});
expect(chart.scales.yScale0).not.toEqual(undefined); // must construct
expect(chart.scales.yScale0.min).toBe(-100);
expect(chart.scales.yScale0.max).toBe(80);
});
it('Should correctly determine the max & min data values ignoring data that is NaN', function() {
var chart = window.acquireChart({
type: 'bar',
data: {
datasets: [{
yAxisID: 'yScale0',
data: [null, 90, NaN, undefined, 45, 30, Infinity, -Infinity]
}],
labels: ['a', 'b', 'c', 'd', 'e', 'f', 'g', 'h']
},
options: {
scales: {
yAxes: [{
id: 'yScale0',
type: 'linear'
}]
}
}
});
expect(chart.scales.yScale0.min).toBe(30);
expect(chart.scales.yScale0.max).toBe(90);
// Scale is now stacked
chart.scales.yScale0.options.stacked = true;
chart.update();
expect(chart.scales.yScale0.min).toBe(0);
expect(chart.scales.yScale0.max).toBe(90);
});
it('Should correctly determine the max & min data values for small numbers', function() {
var chart = window.acquireChart({
type: 'bar',
data: {
datasets: [{
yAxisID: 'yScale0',
data: [-1e-8, 3e-8, -4e-8, 6e-8]
}],
labels: ['a', 'b', 'c', 'd']
},
options: {
scales: {
yAxes: [{
id: 'yScale0',
type: 'linear'
}]
}
}
});
expect(chart.scales.yScale0).not.toEqual(undefined); // must construct
expect(chart.scales.yScale0.min * 1e8).toBeCloseTo(-4);
expect(chart.scales.yScale0.max * 1e8).toBeCloseTo(6);
});
it('Should correctly determine the max & min for scatter data', function() {
var chart = 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'
}]
}
}
});
chart.update();
expect(chart.scales.xScale0.min).toBe(-20);
expect(chart.scales.xScale0.max).toBe(100);
expect(chart.scales.yScale0.min).toBe(0);
expect(chart.scales.yScale0.max).toBe(100);
});
it('Should correctly get the label for the given index', function() {
var chart = 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'
}]
}
}
});
chart.update();
expect(chart.scales.yScale0.getLabelForIndex(3, 0)).toBe(7);
});
it('Should correctly determine the min and max data values when stacked mode is turned on', function() {
var chart = window.acquireChart({
type: 'line',
data: {
datasets: [{
yAxisID: 'yScale0',
data: [10, 5, 0, -5, 78, -100],
type: 'bar'
}, {
yAxisID: 'yScale1',
data: [-1000, 1000],
}, {
yAxisID: 'yScale0',
data: [150, 0, 0, -100, -10, 9],
type: 'bar'
}, {
yAxisID: 'yScale0',
data: [10, 10, 10, 10, 10, 10],
type: 'line'
}],
labels: ['a', 'b', 'c', 'd', 'e', 'f']
},
options: {
scales: {
yAxes: [{
id: 'yScale0',
type: 'linear',
stacked: true
}, {
id: 'yScale1',
type: 'linear'
}]
}
}
});
chart.update();
expect(chart.scales.yScale0.min).toBe(-150);
expect(chart.scales.yScale0.max).toBe(200);
});
it('Should correctly determine the min and max data values when stacked mode is turned on and there are hidden datasets', function() {
var chart = window.acquireChart({
type: 'bar',
data: {
datasets: [{
yAxisID: 'yScale0',
data: [10, 5, 0, -5, 78, -100],
}, {
yAxisID: 'yScale1',
data: [-1000, 1000],
}, {
yAxisID: 'yScale0',
data: [150, 0, 0, -100, -10, 9],
}, {
yAxisID: 'yScale0',
data: [10, 20, 30, 40, 50, 60],
hidden: true
}],
labels: ['a', 'b', 'c', 'd', 'e', 'f']
},
options: {
scales: {
yAxes: [{
id: 'yScale0',
type: 'linear',
stacked: true
}, {
id: 'yScale1',
type: 'linear'
}]
}
}
});
chart.update();
expect(chart.scales.yScale0.min).toBe(-150);
expect(chart.scales.yScale0.max).toBe(200);
});
it('Should correctly determine the min and max data values when stacked mode is turned on there are multiple types of datasets', function() {
var chart = window.acquireChart({
type: 'bar',
data: {
datasets: [{
yAxisID: 'yScale0',
type: 'bar',
data: [10, 5, 0, -5, 78, -100]
}, {
type: 'line',
data: [10, 10, 10, 10, 10, 10],
}, {
type: 'bar',
data: [150, 0, 0, -100, -10, 9]
}],
labels: ['a', 'b', 'c', 'd', 'e', 'f']
},
options: {
scales: {
yAxes: [{
id: 'yScale0',
type: 'linear',
stacked: true
}]
}
}
});
chart.scales.yScale0.determineDataLimits();
expect(chart.scales.yScale0.min).toBe(-105);
expect(chart.scales.yScale0.max).toBe(160);
});
it('Should ensure that the scale has a max and min that are not equal', function() {
var chart = window.acquireChart({
type: 'bar',
data: {
datasets: [],
labels: ['a', 'b', 'c', 'd', 'e', 'f']
},
options: {
scales: {
yAxes: [{
id: 'yScale0',
type: 'linear'
}]
}
}
});
expect(chart.scales.yScale0).not.toEqual(undefined); // must construct
expect(chart.scales.yScale0.min).toBe(-1);
expect(chart.scales.yScale0.max).toBe(1);
});
it('Should ensure that the scale has a max and min that are not equal when beginAtZero is set', function() {
var chart = window.acquireChart({
type: 'bar',
data: {
datasets: [],
labels: ['a', 'b', 'c', 'd', 'e', 'f']
},
options: {
scales: {
yAxes: [{
id: 'yScale0',
type: 'linear',
ticks: {
beginAtZero: true
}
}]
}
}
});
expect(chart.scales.yScale0).not.toEqual(undefined); // must construct
expect(chart.scales.yScale0.min).toBe(0);
expect(chart.scales.yScale0.max).toBe(1);
});
it('Should use the suggestedMin and suggestedMax options', function() {
var chart = window.acquireChart({
type: 'bar',
data: {
datasets: [{
yAxisID: 'yScale0',
data: [1, 1, 1, 2, 1, 0]
}],
labels: ['a', 'b', 'c', 'd', 'e', 'f']
},
options: {
scales: {
yAxes: [{
id: 'yScale0',
type: 'linear',
ticks: {
suggestedMax: 10,
suggestedMin: -10
}
}]
}
}
});
expect(chart.scales.yScale0).not.toEqual(undefined); // must construct
expect(chart.scales.yScale0.min).toBe(-10);
expect(chart.scales.yScale0.max).toBe(10);
});
it('Should use the min and max options', function() {
var chart = window.acquireChart({
type: 'bar',
data: {
datasets: [{
yAxisID: 'yScale0',
data: [1, 1, 1, 2, 1, 0]
}],
labels: ['a', 'b', 'c', 'd', 'e', 'f']
},
options: {
scales: {
yAxes: [{
id: 'yScale0',
type: 'linear',
ticks: {
max: 1010,
min: -1010
}
}]
}
}
});
expect(chart.scales.yScale0).not.toEqual(undefined); // must construct
expect(chart.scales.yScale0.min).toBe(-1010);
expect(chart.scales.yScale0.max).toBe(1010);
expect(chart.scales.yScale0.ticks[0]).toBe('1010');
expect(chart.scales.yScale0.ticks[chart.scales.yScale0.ticks.length - 1]).toBe('-1010');
});
it('Should use min, max and stepSize to create fixed spaced ticks', function() {
var chart = window.acquireChart({
type: 'bar',
data: {
datasets: [{
yAxisID: 'yScale0',
data: [10, 3, 6, 8, 3, 1]
}],
labels: ['a', 'b', 'c', 'd', 'e', 'f']
},
options: {
scales: {
yAxes: [{
id: 'yScale0',
type: 'linear',
ticks: {
min: 1,
max: 11,
stepSize: 2
}
}]
}
}
});
expect(chart.scales.yScale0).not.toEqual(undefined); // must construct
expect(chart.scales.yScale0.min).toBe(1);
expect(chart.scales.yScale0.max).toBe(11);
expect(chart.scales.yScale0.ticks).toEqual(['11', '10', '8', '6', '4', '2', '1']);
});
it('Should create decimal steps if stepSize is a decimal number', function() {
var chart = window.acquireChart({
type: 'bar',
data: {
datasets: [{
yAxisID: 'yScale0',
data: [10, 3, 6, 8, 3, 1]
}],
labels: ['a', 'b', 'c', 'd', 'e', 'f']
},
options: {
scales: {
yAxes: [{
id: 'yScale0',
type: 'linear',
ticks: {
stepSize: 2.5
}
}]
}
}
});
expect(chart.scales.yScale0).not.toEqual(undefined); // must construct
expect(chart.scales.yScale0.min).toBe(0);
expect(chart.scales.yScale0.max).toBe(10);
expect(chart.scales.yScale0.ticks).toEqual(['10', '7.5', '5', '2.5', '0']);
});
describe('precision', function() {
it('Should create integer steps if precision is 0', function() {
var chart = window.acquireChart({
type: 'bar',
data: {
datasets: [{
yAxisID: 'yScale0',
data: [0, 1, 2, 1, 0, 1]
}],
labels: ['a', 'b', 'c', 'd', 'e', 'f']
},
options: {
scales: {
yAxes: [{
id: 'yScale0',
type: 'linear',
ticks: {
precision: 0
}
}]
}
}
});
expect(chart.scales.yScale0).not.toEqual(undefined); // must construct
expect(chart.scales.yScale0.min).toBe(0);
expect(chart.scales.yScale0.max).toBe(2);
expect(chart.scales.yScale0.ticks).toEqual(['2', '1', '0']);
});
it('Should round the step size to the given number of decimal places', function() {
var chart = window.acquireChart({
type: 'bar',
data: {
datasets: [{
yAxisID: 'yScale0',
data: [0, 0.001, 0.002, 0.003, 0, 0.001]
}],
labels: ['a', 'b', 'c', 'd', 'e', 'f']
},
options: {
scales: {
yAxes: [{
id: 'yScale0',
type: 'linear',
ticks: {
precision: 2
}
}]
}
}
});
expect(chart.scales.yScale0).not.toEqual(undefined); // must construct
expect(chart.scales.yScale0.min).toBe(0);
expect(chart.scales.yScale0.max).toBe(0.01);
expect(chart.scales.yScale0.ticks).toEqual(['0.01', '0']);
});
});
it('should forcibly include 0 in the range if the beginAtZero option is used', function() {
var chart = window.acquireChart({
type: 'bar',
data: {
datasets: [{
yAxisID: 'yScale0',
data: [20, 30, 40, 50]
}],
labels: ['a', 'b', 'c', 'd']
},
options: {
scales: {
yAxes: [{
id: 'yScale0',
type: 'linear',
}]
}
}
});
expect(chart.scales.yScale0).not.toEqual(undefined); // must construct
expect(chart.scales.yScale0.ticks).toEqual(['50', '45', '40', '35', '30', '25', '20']);
chart.scales.yScale0.options.ticks.beginAtZero = true;
chart.update();
expect(chart.scales.yScale0.ticks).toEqual(['50', '45', '40', '35', '30', '25', '20', '15', '10', '5', '0']);
chart.data.datasets[0].data = [-20, -30, -40, -50];
chart.update();
expect(chart.scales.yScale0.ticks).toEqual(['0', '-5', '-10', '-15', '-20', '-25', '-30', '-35', '-40', '-45', '-50']);
chart.scales.yScale0.options.ticks.beginAtZero = false;
chart.update();
expect(chart.scales.yScale0.ticks).toEqual(['-20', '-25', '-30', '-35', '-40', '-45', '-50']);
});
it('Should generate tick marks in the correct order in reversed mode', function() {
var chart = window.acquireChart({
type: 'bar',
data: {
datasets: [{
yAxisID: 'yScale0',
data: [10, 5, 0, 25, 78]
}],
labels: ['a', 'b', 'c', 'd']
},
options: {
scales: {
yAxes: [{
id: 'yScale0',
type: 'linear',
ticks: {
reverse: true
}
}]
}
}
});
expect(chart.scales.yScale0.ticks).toEqual(['0', '10', '20', '30', '40', '50', '60', '70', '80']);
expect(chart.scales.yScale0.start).toBe(80);
expect(chart.scales.yScale0.end).toBe(0);
});
it('should use the correct number of decimal places in the default format function', function() {
var chart = window.acquireChart({
type: 'bar',
data: {
datasets: [{
yAxisID: 'yScale0',
data: [0.06, 0.005, 0, 0.025, 0.0078]
}],
labels: ['a', 'b', 'c', 'd']
},
options: {
scales: {
yAxes: [{
id: 'yScale0',
type: 'linear',
}]
}
}
});
expect(chart.scales.yScale0.ticks).toEqual(['0.06', '0.05', '0.04', '0.03', '0.02', '0.01', '0']);
});
it('Should correctly limit the maximum number of ticks', function() {
var chart = window.acquireChart({
type: 'bar',
data: {
labels: ['a', 'b'],
datasets: [{
data: [0.5, 2.5]
}]
},
options: {
scales: {
yAxes: [{
id: 'yScale'
}]
}
}
});
expect(chart.scales.yScale.ticks).toEqual(['2.5', '2.0', '1.5', '1.0', '0.5']);
chart.options.scales.yAxes[0].ticks.maxTicksLimit = 11;
chart.update();
expect(chart.scales.yScale.ticks).toEqual(['2.5', '2.0', '1.5', '1.0', '0.5']);
chart.options.scales.yAxes[0].ticks.maxTicksLimit = 21;
chart.update();
expect(chart.scales.yScale.ticks).toEqual([
'2.5', '2.4', '2.3', '2.2', '2.1', '2.0', '1.9', '1.8', '1.7', '1.6',
'1.5', '1.4', '1.3', '1.2', '1.1', '1.0', '0.9', '0.8', '0.7', '0.6',
'0.5'
]);
chart.options.scales.yAxes[0].ticks.maxTicksLimit = 11;
chart.options.scales.yAxes[0].ticks.stepSize = 0.01;
chart.update();
expect(chart.scales.yScale.ticks).toEqual(['2.5', '2.0', '1.5', '1.0', '0.5']);
chart.options.scales.yAxes[0].ticks.min = 0.3;
chart.options.scales.yAxes[0].ticks.max = 2.8;
chart.update();
expect(chart.scales.yScale.ticks).toEqual(['2.8', '2.5', '2.0', '1.5', '1.0', '0.5', '0.3']);
});
it('Should build labels using the user supplied callback', function() {
var chart = window.acquireChart({
type: 'bar',
data: {
datasets: [{
yAxisID: 'yScale0',
data: [10, 5, 0, 25, 78]
}],
labels: ['a', 'b', 'c', 'd']
},
options: {
scales: {
yAxes: [{
id: 'yScale0',
type: 'linear',
ticks: {
callback: function(value, index) {
return index.toString();
}
}
}]
}
}
});
// Just the index
expect(chart.scales.yScale0.ticks).toEqual(['0', '1', '2', '3', '4', '5', '6', '7', '8']);
});
it('Should get the correct pixel value for a point', function() {
var chart = 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 = chart.scales.xScale0;
expect(xScale.getPixelForValue(1, 0, 0)).toBeCloseToPixel(501); // right - paddingRight
expect(xScale.getPixelForValue(-1, 0, 0)).toBeCloseToPixel(31 + 6); // left + paddingLeft + lineSpace
expect(xScale.getPixelForValue(0, 0, 0)).toBeCloseToPixel(266 + 6 / 2); // halfway*/
expect(xScale.getValueForPixel(501)).toBeCloseTo(1, 1e-2);
expect(xScale.getValueForPixel(31)).toBeCloseTo(-1, 1e-2);
expect(xScale.getValueForPixel(266)).toBeCloseTo(0, 1e-2);
var yScale = chart.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)).toBeCloseTo(1, 1e-2);
expect(yScale.getValueForPixel(484)).toBeCloseTo(-1, 1e-2);
expect(yScale.getValueForPixel(258)).toBeCloseTo(0, 1e-2);
});
it('should fit correctly', function() {
var chart = 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 = chart.scales.xScale0;
expect(xScale.paddingTop).toBeCloseToPixel(0);
expect(xScale.paddingBottom).toBeCloseToPixel(0);
expect(xScale.paddingLeft).toBeCloseToPixel(0);
expect(xScale.paddingRight).toBeCloseToPixel(0);
expect(xScale.width).toBeCloseToPixel(468 - 6); // minus lineSpace
expect(xScale.height).toBeCloseToPixel(30);
var yScale = chart.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(30 + 6); // plus lineSpace
expect(yScale.height).toBeCloseToPixel(450);
// Extra size when scale label showing
xScale.options.scaleLabel.display = true;
yScale.options.scaleLabel.display = true;
chart.update();
expect(xScale.paddingTop).toBeCloseToPixel(0);
expect(xScale.paddingBottom).toBeCloseToPixel(0);
expect(xScale.paddingLeft).toBeCloseToPixel(0);
expect(xScale.paddingRight).toBeCloseToPixel(0);
expect(xScale.width).toBeCloseToPixel(440);
expect(xScale.height).toBeCloseToPixel(53);
expect(yScale.paddingTop).toBeCloseToPixel(0);
expect(yScale.paddingBottom).toBeCloseToPixel(0);
expect(yScale.paddingLeft).toBeCloseToPixel(0);
expect(yScale.paddingRight).toBeCloseToPixel(0);
expect(yScale.width).toBeCloseToPixel(58);
expect(yScale.height).toBeCloseToPixel(427);
});
it('should fit correctly when display is turned off', function() {
var chart = 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',
gridLines: {
drawTicks: false,
drawBorder: false
},
scaleLabel: {
display: false,
lineHeight: 1.2
},
ticks: {
display: false,
padding: 0
}
}]
}
}
});
var yScale = chart.scales.yScale0;
expect(yScale.width).toBeCloseToPixel(0);
});
it('max and min value should be valid and finite when charts datasets are hidden', function() {
var barData = {
labels: ['S1', 'S2', 'S3'],
datasets: [{
label: 'Closed',
backgroundColor: '#382765',
data: [2500, 2000, 1500]
}, {
label: 'In Progress',
backgroundColor: '#7BC225',
data: [1000, 2000, 1500]
}, {
label: 'Assigned',
backgroundColor: '#ffC225',
data: [1000, 2000, 1500]
}]
};
var chart = window.acquireChart({
type: 'horizontalBar',
data: barData,
options: {
scales: {
xAxes: [{
stacked: true
}],
yAxes: [{
stacked: true
}]
}
}
});
barData.datasets.forEach(function(data, index) {
var meta = chart.getDatasetMeta(index);
meta.hidden = true;
chart.update();
});
expect(chart.scales['x-axis-0'].min).toEqual(0);
expect(chart.scales['x-axis-0'].max).toEqual(1);
});
it('max and min value should be valid when min is set and all datasets are hidden', function() {
var barData = {
labels: ['S1', 'S2', 'S3'],
datasets: [{
label: 'dataset 1',
backgroundColor: '#382765',
data: [2500, 2000, 1500],
hidden: true,
}]
};
var chart = window.acquireChart({
type: 'horizontalBar',
data: barData,
options: {
scales: {
xAxes: [{
ticks: {
min: 20
}
}]
}
}
});
expect(chart.scales['x-axis-0'].min).toEqual(20);
expect(chart.scales['x-axis-0'].max).toEqual(21);
});
it('min settings should be used if set to zero', function() {
var barData = {
labels: ['S1', 'S2', 'S3'],
datasets: [{
label: 'dataset 1',
backgroundColor: '#382765',
data: [2500, 2000, 1500]
}]
};
var chart = window.acquireChart({
type: 'horizontalBar',
data: barData,
options: {
scales: {
xAxes: [{
ticks: {
min: 0,
max: 3000
}
}]
}
}
});
expect(chart.scales['x-axis-0'].min).toEqual(0);
});
it('max settings should be used if set to zero', function() {
var barData = {
labels: ['S1', 'S2', 'S3'],
datasets: [{
label: 'dataset 1',
backgroundColor: '#382765',
data: [-2500, -2000, -1500]
}]
};
var chart = window.acquireChart({
type: 'horizontalBar',
data: barData,
options: {
scales: {
xAxes: [{
ticks: {
min: -3000,
max: 0
}
}]
}
}
});
expect(chart.scales['x-axis-0'].max).toEqual(0);
});
it('minBarLength settings should be used on Y axis on bar chart', function() {
var minBarLength = 4;
var chart = window.acquireChart({
type: 'bar',
data: {
datasets: [{
data: [0.05, -0.05, 10, 15, 20, 25, 30, 35]
}]
},
options: {
scales: {
yAxes: [{
minBarLength: minBarLength
}]
}
}
});
var data = chart.getDatasetMeta(0).data;
expect(data[0]._model.base - minBarLength).toEqual(data[0]._model.y);
expect(data[1]._model.base + minBarLength).toEqual(data[1]._model.y);
});
it('minBarLength settings should be used on X axis on horizontalBar chart', function() {
var minBarLength = 4;
var chart = window.acquireChart({
type: 'horizontalBar',
data: {
datasets: [{
data: [0.05, -0.05, 10, 15, 20, 25, 30, 35]
}]
},
options: {
scales: {
xAxes: [{
minBarLength: minBarLength
}]
}
}
});
var data = chart.getDatasetMeta(0).data;
expect(data[0]._model.base + minBarLength).toEqual(data[0]._model.x);
expect(data[1]._model.base - minBarLength).toEqual(data[1]._model.x);
});
it('Should generate max and min that are not equal when data contains values that are very close to each other', function() {
var chart = window.acquireChart({
type: 'scatter',
data: {
datasets: [{
data: [
{x: 1, y: 1.8548483304974972},
{x: 2, y: 1.8548483304974974},
]
}],
},
options: {
scales: {
yAxes: [{
id: 'yScale0',
type: 'linear',
}]
}
}
});
expect(chart.scales.yScale0).not.toEqual(undefined); // must construct
expect(chart.scales.yScale0.max).toBeGreaterThan(chart.scales.yScale0.min);
});
});