Chart.js/test/scale.linear.tests.js
2016-02-01 21:06:54 -05:00

2061 lines
42 KiB
JavaScript

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)",
drawOnChartArea: true,
drawTicks: true, // draw ticks extending towards the label
lineWidth: 1,
offsetGridLines: false,
display: true,
zeroLineColor: "rgba(0,0,0,0.25)",
zeroLineWidth: 1,
},
position: "left",
scaleLabel: {
fontColor: '#666',
fontFamily: "'Helvetica Neue', 'Helvetica', 'Arial', sans-serif",
fontSize: 12,
fontStyle: 'normal',
labelString: '',
display: false,
},
ticks: {
beginAtZero: false,
fontColor: "#666",
fontFamily: "'Helvetica Neue', 'Helvetica', 'Arial', sans-serif",
fontSize: 12,
fontStyle: "normal",
maxRotation: 90,
mirror: false,
padding: 10,
reverse: false,
display: true,
callback: defaultConfig.ticks.callback, // make this work nicer, then check below
autoSkip: true,
autoSkipPadding: 20
}
});
expect(defaultConfig.ticks.callback).toEqual(jasmine.any(Function));
});
it('Should correctly determine the max & min data values', function() {
var scaleID = 'myScale';
var mockData = {
datasets: [{
yAxisID: scaleID,
data: [10, 5, 0, -5, 78, -100]
}, {
yAxisID: 'second scale',
data: [-1000, 1000],
}, {
yAxisID: scaleID,
data: [150]
}]
};
var Constructor = Chart.scaleService.getScaleConstructor('linear');
var scale = new Constructor({
ctx: {},
options: Chart.scaleService.getScaleDefaults('linear'), // use default config for scale
chart: {
data: mockData
},
id: scaleID
});
expect(scale).not.toEqual(undefined); // must construct
expect(scale.min).toBe(undefined); // not yet set
expect(scale.max).toBe(undefined);
// Set arbitrary width and height for now
scale.width = 50;
scale.height = 400;
scale.determineDataLimits();
expect(scale.min).toBe(-100);
expect(scale.max).toBe(150);
});
it('Should correctly determine the max & min of string data values', function() {
var scaleID = 'myScale';
var mockData = {
datasets: [{
yAxisID: scaleID,
data: ['10', '5', '0', '-5', '78', '-100']
}, {
yAxisID: 'second scale',
data: ['-1000', '1000'],
}, {
yAxisID: scaleID,
data: ['150']
}]
};
var Constructor = Chart.scaleService.getScaleConstructor('linear');
var scale = new Constructor({
ctx: {},
options: Chart.scaleService.getScaleDefaults('linear'), // use default config for scale
chart: {
data: mockData
},
id: scaleID
});
expect(scale).not.toEqual(undefined); // must construct
expect(scale.min).toBe(undefined); // not yet set
expect(scale.max).toBe(undefined);
// Set arbitrary width and height for now
scale.width = 50;
scale.height = 400;
scale.determineDataLimits();
expect(scale.min).toBe(-100);
expect(scale.max).toBe(150);
});
it('Should correctly determine the max & min data values ignoring hidden datasets', function() {
var scaleID = 'myScale';
var mockData = {
datasets: [{
yAxisID: scaleID,
data: [10, 5, 0, -5, 78, -100]
}, {
yAxisID: 'second scale',
data: [-1000, 1000],
}, {
yAxisID: scaleID,
data: [150],
hidden: true
}]
};
var Constructor = Chart.scaleService.getScaleConstructor('linear');
var scale = new Constructor({
ctx: {},
options: Chart.scaleService.getScaleDefaults('linear'), // use default config for scale
chart: {
data: mockData
},
id: scaleID
});
expect(scale).not.toEqual(undefined); // must construct
expect(scale.min).toBe(undefined); // not yet set
expect(scale.max).toBe(undefined);
// Set arbitrary width and height for now
scale.width = 50;
scale.height = 400;
scale.determineDataLimits();
scale.buildTicks();
expect(scale.min).toBe(-100);
expect(scale.max).toBe(80);
});
it('Should correctly determine the max & min data values ignoring data that is NaN', function() {
var scaleID = 'myScale';
var mockData = {
datasets: [{
yAxisID: scaleID,
data: [null, 90, NaN, undefined, 45, 30]
}]
};
var options = Chart.scaleService.getScaleDefaults('linear');
var Constructor = Chart.scaleService.getScaleConstructor('linear');
var scale = new Constructor({
ctx: {},
options: options, // use default config for scale
chart: {
data: mockData
},
id: scaleID
});
expect(scale).not.toEqual(undefined); // must construct
expect(scale.min).toBe(undefined); // not yet set
expect(scale.max).toBe(undefined);
// Set arbitrary width and height for now
scale.width = 50;
scale.height = 400;
scale.determineDataLimits();
scale.buildTicks();
expect(scale.min).toBe(30);
expect(scale.max).toBe(90);
// Scale is now stacked
options.stacked = true;
scale.determineDataLimits();
expect(scale.min).toBe(0);
expect(scale.max).toBe(90);
});
it('Should correctly determine the max & min for scatter data', function() {
var scaleID = 'myScale';
var mockData = {
datasets: [{
xAxisID: scaleID, // for the horizontal scale
yAxisID: scaleID,
data: [{
x: 10,
y: 100
}, {
x: -10,
y: 0
}, {
x: 0,
y: 0
}, {
x: 99,
y: 7
}]
}]
};
var config = Chart.helpers.clone(Chart.scaleService.getScaleDefaults('linear'));
var Constructor = Chart.scaleService.getScaleConstructor('linear');
var verticalScale = new Constructor({
ctx: {},
options: config,
chart: {
data: mockData
},
id: scaleID
});
// Set arbitrary width and height for now
verticalScale.width = 50;
verticalScale.height = 400;
verticalScale.determineDataLimits();
verticalScale.buildTicks();
expect(verticalScale.min).toBe(0);
expect(verticalScale.max).toBe(100);
var horizontalConfig = Chart.helpers.clone(config);
horizontalConfig.position = 'bottom';
var horizontalScale = new Constructor({
ctx: {},
options: horizontalConfig,
chart: {
data: mockData
},
id: scaleID,
});
// Set arbitrary width and height for now
horizontalScale.width = 400;
horizontalScale.height = 50;
horizontalScale.determineDataLimits();
horizontalScale.buildTicks();
expect(horizontalScale.min).toBe(-20);
expect(horizontalScale.max).toBe(100);
});
it('Should correctly get the label for the given index', function() {
var scaleID = 'myScale';
var mockData = {
datasets: [{
xAxisID: scaleID, // for the horizontal scale
yAxisID: scaleID,
data: [{
x: 10,
y: 100
}, {
x: -10,
y: 0
}, {
x: 0,
y: 0
}, {
x: 99,
y: 7
}]
}]
};
var config = Chart.helpers.clone(Chart.scaleService.getScaleDefaults('linear'));
var Constructor = Chart.scaleService.getScaleConstructor('linear');
var scale = new Constructor({
ctx: {},
options: config,
chart: {
data: mockData
},
id: scaleID
});
// Set arbitrary width and height for now
scale.width = 50;
scale.height = 400;
scale.determineDataLimits();
scale.buildTicks();
expect(scale.getLabelForIndex(3, 0)).toBe(7)
});
it('Should correctly determine the min and max data values when stacked mode is turned on', function() {
var scaleID = 'myScale';
var mockData = {
datasets: [{
yAxisID: scaleID,
data: [10, 5, 0, -5, 78, -100],
type: 'bar'
}, {
yAxisID: 'second scale',
data: [-1000, 1000],
}, {
yAxisID: scaleID,
data: [150, 0, 0, -100, -10, 9],
type: 'bar'
}, {
yAxisID: scaleID,
data: [10, 10, 10, 10, 10, 10],
type: 'line'
}]
};
var config = Chart.helpers.clone(Chart.scaleService.getScaleDefaults('linear'));
config.stacked = true; // enable scale stacked mode
var Constructor = Chart.scaleService.getScaleConstructor('linear');
var scale = new Constructor({
ctx: {},
options: config,
chart: {
data: mockData
},
id: scaleID
});
// Set arbitrary width and height for now
scale.width = 50;
scale.height = 400;
scale.determineDataLimits();
scale.buildTicks();
expect(scale.min).toBe(-150);
expect(scale.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 scaleID = 'myScale';
var mockData = {
datasets: [{
yAxisID: scaleID,
data: [10, 5, 0, -5, 78, -100]
}, {
yAxisID: 'second scale',
data: [-1000, 1000],
}, {
yAxisID: scaleID,
data: [150, 0, 0, -100, -10, 9]
}, {
yAxisID: scaleID,
data: [10, 20, 30, 40, 50, 60],
hidden: true
}]
};
var config = Chart.helpers.clone(Chart.scaleService.getScaleDefaults('linear'));
config.stacked = true; // enable scale stacked mode
var Constructor = Chart.scaleService.getScaleConstructor('linear');
var scale = new Constructor({
ctx: {},
options: config,
chart: {
data: mockData
},
id: scaleID
});
// Set arbitrary width and height for now
scale.width = 50;
scale.height = 400;
scale.determineDataLimits();
scale.buildTicks();
expect(scale.min).toBe(-150);
expect(scale.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 scaleID = 'myScale';
var mockData = {
datasets: [{
type: 'bar',
yAxisID: scaleID,
data: [10, 5, 0, -5, 78, -100]
}, {
type: 'line',
yAxisID: scaleID,
data: [10, 10, 10, 10, 10, 10],
}, {
type: 'bar',
yAxisID: scaleID,
data: [150, 0, 0, -100, -10, 9]
}]
};
var config = Chart.helpers.clone(Chart.scaleService.getScaleDefaults('linear'));
config.stacked = true; // enable scale stacked mode
var Constructor = Chart.scaleService.getScaleConstructor('linear');
var scale = new Constructor({
ctx: {},
options: config,
chart: {
data: mockData
},
id: scaleID
});
// Set arbitrary width and height for now
scale.width = 50;
scale.height = 400;
scale.determineDataLimits();
expect(scale.min).toBe(-105);
expect(scale.max).toBe(160);
});
it('Should ensure that the scale has a max and min that are not equal', function() {
var scaleID = 'myScale';
var mockData = {
datasets: []
};
var config = Chart.helpers.clone(Chart.scaleService.getScaleDefaults('linear'));
var Constructor = Chart.scaleService.getScaleConstructor('linear');
var scale = new Constructor({
ctx: {},
options: config,
chart: {
data: mockData
},
id: scaleID
});
// Set arbitrary width and height for now
scale.width = 50;
scale.height = 400;
scale.determineDataLimits();
scale.buildTicks();
expect(scale.min).toBe(-1);
expect(scale.max).toBe(1);
});
it('Should use the suggestedMin and suggestedMax options', function() {
var scaleID = 'myScale';
var mockData = {
datasets: [{
yAxisID: scaleID,
data: [1, 1, 1, 2, 1, 0]
}]
};
var config = Chart.helpers.clone(Chart.scaleService.getScaleDefaults('linear'));
config.ticks.suggestedMin = -10;
config.ticks.suggestedMax = 10;
var Constructor = Chart.scaleService.getScaleConstructor('linear');
var scale = new Constructor({
ctx: {},
options: config,
chart: {
data: mockData
},
id: scaleID
});
// Set arbitrary width and height for now
scale.width = 50;
scale.height = 400;
scale.determineDataLimits();
scale.buildTicks();
expect(scale.min).toBe(-10);
expect(scale.max).toBe(10);
});
it('Should use the min and max options', function() {
var scaleID = 'myScale';
var mockData = {
datasets: [{
yAxisID: scaleID,
data: [1, 1, 1, 2, 1, 0]
}]
};
var config = Chart.helpers.clone(Chart.scaleService.getScaleDefaults('linear'));
config.ticks.min = -1010;
config.ticks.max = 1010;
var Constructor = Chart.scaleService.getScaleConstructor('linear');
var scale = new Constructor({
ctx: {},
options: config,
chart: {
data: mockData
},
id: scaleID
});
// Set arbitrary width and height for now
scale.width = 50;
scale.height = 400;
scale.determineDataLimits();
scale.buildTicks();
expect(scale.min).toBe(-1010);
expect(scale.max).toBe(1010);
expect(scale.ticks[0]).toBe(1010);
expect(scale.ticks[scale.ticks.length - 1]).toBe(-1010);
});
it('should forcibly include 0 in the range if the beginAtZero option is used', function() {
var scaleID = 'myScale';
var mockData = {
datasets: [{
yAxisID: scaleID,
data: [20, 30, 40, 50]
}]
};
var config = Chart.helpers.clone(Chart.scaleService.getScaleDefaults('linear'));
var Constructor = Chart.scaleService.getScaleConstructor('linear');
var scale = new Constructor({
ctx: {},
options: config,
chart: {
data: mockData
},
id: scaleID
});
// Set arbitrary width and height for now
scale.width = 50;
scale.height = 400;
scale.determineDataLimits();
scale.buildTicks();
expect(scale.ticks).toEqual([50, 45, 40, 35, 30, 25, 20]);
config.ticks.beginAtZero = true;
scale.determineDataLimits();
scale.buildTicks();
expect(scale.ticks).toEqual([50, 45, 40, 35, 30, 25, 20, 15, 10, 5, 0]);
mockData.datasets[0].data = [-20, -30, -40, -50];
scale.determineDataLimits();
scale.buildTicks();
expect(scale.ticks).toEqual([0, -5, -10, -15, -20, -25, -30, -35, -40, -45, -50]);
config.ticks.beginAtZero = false;
scale.determineDataLimits();
scale.buildTicks();
expect(scale.ticks).toEqual([-20, -25, -30, -35, -40, -45, -50]);
});
it('Should generate tick marks', function() {
var scaleID = 'myScale';
var mockData = {
datasets: [{
yAxisID: scaleID,
data: [10, 5, 0, 25, 78]
}, ]
};
var config = Chart.helpers.clone(Chart.scaleService.getScaleDefaults('linear'));
var Constructor = Chart.scaleService.getScaleConstructor('linear');
var scale = new Constructor({
ctx: {},
options: config,
chart: {
data: mockData
},
id: scaleID
});
// Set arbitrary width and height for now
scale.width = 50;
scale.height = 400;
scale.determineDataLimits();
scale.buildTicks();
// Counts down because the lines are drawn top to bottom
expect(scale.ticks).toEqual([80, 70, 60, 50, 40, 30, 20, 10, 0]);
expect(scale.start).toBe(0);
expect(scale.end).toBe(80);
});
it('Should generate tick marks in the correct order in reversed mode', function() {
var scaleID = 'myScale';
var mockData = {
datasets: [{
yAxisID: scaleID,
data: [10, 5, 0, 25, 78]
}, ]
};
var config = Chart.helpers.clone(Chart.scaleService.getScaleDefaults('linear'));
config.ticks.reverse = true;
var Constructor = Chart.scaleService.getScaleConstructor('linear');
var scale = new Constructor({
ctx: {},
options: config,
chart: {
data: mockData
},
id: scaleID
});
// Set arbitrary width and height for now
scale.width = 50;
scale.height = 400;
scale.determineDataLimits();
scale.buildTicks();
// Reverse mode makes this count up
expect(scale.ticks).toEqual([0, 10, 20, 30, 40, 50, 60, 70, 80]);
expect(scale.ticksAsNumbers).toEqual([0, 10, 20, 30, 40, 50, 60, 70, 80]);
expect(scale.start).toBe(80);
expect(scale.end).toBe(0);
});
it('Should build labels using the default template', function() {
var scaleID = 'myScale';
var mockData = {
datasets: [{
yAxisID: scaleID,
data: [10, 5, 0, 25, 78]
}, ]
};
var mockContext = window.createMockContext();
var config = Chart.helpers.clone(Chart.scaleService.getScaleDefaults('linear'));
var Constructor = Chart.scaleService.getScaleConstructor('linear');
var scale = new Constructor({
ctx: mockContext,
options: config,
chart: {
data: mockData
},
id: scaleID
});
// Set arbitrary width and height for now
scale.update(50, 400);
expect(scale.ticks).toEqual(['80', '70', '60', '50', '40', '30', '20', '10', '0']);
});
it('should use the correct number of decimal places in the default format function', function() {
var scaleID = 'myScale';
var mockData = {
datasets: [{
yAxisID: scaleID,
data: [0.06, 0.005, 0, 0.025, 0.0078]
}, ]
};
var mockContext = window.createMockContext();
var config = Chart.helpers.clone(Chart.scaleService.getScaleDefaults('linear'));
var Constructor = Chart.scaleService.getScaleConstructor('linear');
var scale = new Constructor({
ctx: mockContext,
options: config,
chart: {
data: mockData
},
id: scaleID
});
// Set arbitrary width and height for now
scale.update(50, 400);
expect(scale.ticks).toEqual(['0.06', '0.05', '0.04', '0.03', '0.02', '0.01', '0']);
});
it('Should build labels using the user supplied callback', function() {
var scaleID = 'myScale';
var mockData = {
datasets: [{
yAxisID: scaleID,
data: [10, 5, 0, 25, 78]
}, ]
};
var config = Chart.helpers.clone(Chart.scaleService.getScaleDefaults('linear'));
config.ticks.callback = function(value, index) {
return index.toString();
};
var mockContext = window.createMockContext();
var Constructor = Chart.scaleService.getScaleConstructor('linear');
var scale = new Constructor({
ctx: mockContext,
options: config,
chart: {
data: mockData
},
id: scaleID
});
scale.update(400, 400);
// Just the index
expect(scale.ticks).toEqual(['0', '1', '2', '3', '4', '5', '6', '7', '8']);
});
it('Should get the correct pixel value for a point', function() {
var scaleID = 'myScale';
var mockData = {
datasets: [{
xAxisID: scaleID, // for the horizontal scale
yAxisID: scaleID,
data: []
}]
};
var mockContext = window.createMockContext();
var config = Chart.helpers.clone(Chart.scaleService.getScaleDefaults('linear'));
var Constructor = Chart.scaleService.getScaleConstructor('linear');
var verticalScale = new Constructor({
ctx: mockContext,
options: config,
chart: {
data: mockData
},
id: scaleID
});
// Update
verticalScale.update(50, 100);
// Fake out positioning of the scale service
verticalScale.left = 0;
verticalScale.top = 0;
verticalScale.right = 50;
verticalScale.bottom = 110;
verticalScale.paddingTop = 5;
verticalScale.paddingBottom = 5;
verticalScale.width = 50;
verticalScale.height = 110;
expect(verticalScale.getPixelForValue(1, 0, 0)).toBe(5); // top + paddingTop
expect(verticalScale.getPixelForValue(-1, 0, 0)).toBe(105); // bottom - paddingBottom
expect(verticalScale.getPixelForValue(0, 0, 0)).toBe(55); // halfway
var horizontalConfig = Chart.helpers.clone(config);
horizontalConfig.position = 'bottom';
var horizontalScale = new Constructor({
ctx: mockContext,
options: horizontalConfig,
chart: {
data: mockData
},
id: scaleID,
});
horizontalScale.update(100, 50);
// Fake out positioning of the scale service
horizontalScale.left = 0;
horizontalScale.top = 0;
horizontalScale.right = 110;
horizontalScale.bottom = 50;
horizontalScale.paddingLeft = 5;
horizontalScale.paddingRight = 5;
horizontalScale.width = 110;
horizontalScale.height = 50;
// Range expands to [-2, 2] due to nicenum algorithm
expect(horizontalScale.getPixelForValue(2, 0, 0)).toBe(105); // right - paddingRight
expect(horizontalScale.getPixelForValue(-2, 0, 0)).toBe(5); // left + paddingLeft
expect(horizontalScale.getPixelForValue(0, 0, 0)).toBe(55); // halfway
});
it('should fit correctly', function() {
var scaleID = 'myScale';
var mockData = {
datasets: [{
xAxisID: scaleID, // for the horizontal scale
yAxisID: scaleID,
data: [-5, 0, 2, -3, 5]
}]
};
var mockContext = window.createMockContext();
var config = Chart.helpers.clone(Chart.scaleService.getScaleDefaults('linear'));
var Constructor = Chart.scaleService.getScaleConstructor('linear');
var verticalScale = new Constructor({
ctx: mockContext,
options: config,
chart: {
data: mockData
},
id: scaleID
});
var minSize = verticalScale.update(100, 300);
expect(minSize).toEqual({
width: 40,
height: 300,
});
expect(verticalScale.width).toBe(40);
expect(verticalScale.height).toBe(300);
expect(verticalScale.paddingTop).toBe(6);
expect(verticalScale.paddingBottom).toBe(6);
expect(verticalScale.paddingLeft).toBe(0);
expect(verticalScale.paddingRight).toBe(0);
// Refit with margins to see the padding go away
minSize = verticalScale.update(30, 300, {
left: 0,
right: 0,
top: 15,
bottom: 3
});
expect(minSize).toEqual({
width: 30,
height: 300,
});
expect(verticalScale.paddingTop).toBe(0);
expect(verticalScale.paddingBottom).toBe(3);
expect(verticalScale.paddingLeft).toBe(0);
expect(verticalScale.paddingRight).toBe(0);
// Extra size when scale label showing
config.scaleLabel.display = true;
minSize = verticalScale.update(100, 300);
expect(minSize).toEqual({
width: 58,
height: 300,
});
});
it('should fit correctly when horizontal', function() {
var scaleID = 'myScale';
var mockData = {
datasets: [{
xAxisID: scaleID, // for the horizontal scale
yAxisID: scaleID,
data: [-5, 0, 2, -3, 5]
}]
};
var mockContext = window.createMockContext();
var config = Chart.helpers.clone(Chart.scaleService.getScaleDefaults('linear'));
config.position = "bottom";
var Constructor = Chart.scaleService.getScaleConstructor('linear');
var horizontalScale = new Constructor({
ctx: mockContext,
options: config,
chart: {
data: mockData
},
id: scaleID
});
var minSize = horizontalScale.update(200, 300);
expect(minSize).toEqual({
width: 200,
height: 28,
});
expect(horizontalScale.width).toBe(200);
expect(horizontalScale.height).toBe(28);
expect(horizontalScale.paddingTop).toBe(0);
expect(horizontalScale.paddingBottom).toBe(0);
expect(horizontalScale.paddingLeft).toBe(13);
expect(horizontalScale.paddingRight).toBe(8);
expect(horizontalScale.labelRotation).toBe(0);
// Refit with margins to see the padding go away
minSize = horizontalScale.update(200, 28, {
left: 10,
right: 6,
top: 15,
bottom: 3
});
expect(minSize).toEqual({
width: 200,
height: 28,
});
expect(horizontalScale.paddingTop).toBe(0);
expect(horizontalScale.paddingBottom).toBe(0);
expect(horizontalScale.paddingLeft).toBe(3);
expect(horizontalScale.paddingRight).toBe(2);
// Extra size when scale label showing
config.scaleLabel.display = true;
minSize = horizontalScale.update(200, 300);
expect(minSize).toEqual({
width: 200,
height: 46,
});
});
it('Should draw correctly horizontally', function() {
var scaleID = 'myScale';
var mockData = {
datasets: [{
xAxisID: scaleID, // for the horizontal scale
yAxisID: scaleID,
data: [-5, 0, 2, -3, 5]
}]
};
var mockContext = window.createMockContext();
var config = Chart.helpers.clone(Chart.scaleService.getScaleDefaults('linear'));
config.position = "bottom";
var Constructor = Chart.scaleService.getScaleConstructor('linear');
var horizontalScale = new Constructor({
ctx: mockContext,
options: config,
chart: {
data: mockData
},
id: scaleID
});
var minSize = horizontalScale.update(200, 300);
minSize = horizontalScale.update(200, 28, {
left: 10,
right: 6,
top: 15,
bottom: 3
});
horizontalScale.left = 0;
horizontalScale.right = minSize.width;
horizontalScale.top = 100;
horizontalScale.bottom = 100 + minSize.height;
var chartArea = {
top: 0,
bottom: 100,
left: 0,
right: minSize.width
};
mockContext.resetCalls();
horizontalScale.draw(chartArea);
var expected = [{
"name": "setFillStyle",
"args": ["#666"]
}, {
"name": "setLineWidth",
"args": [1]
}, {
"name": "setStrokeStyle",
"args": ["rgba(0, 0, 0, 0.1)"]
}, {
"name": "beginPath",
"args": []
}, {
"name": "moveTo",
"args": [3.5, 100]
}, {
"name": "lineTo",
"args": [3.5, 110]
}, {
"name": "moveTo",
"args": [3.5, 0]
}, {
"name": "lineTo",
"args": [3.5, 100]
}, {
"name": "stroke",
"args": []
}, {
"name": "save",
"args": []
}, {
"name": "translate",
"args": [3, 110]
}, {
"name": "rotate",
"args": [-0]
}, {
"name": "fillText",
"args": ["-5", 0, 0]
}, {
"name": "restore",
"args": []
}, {
"name": "setLineWidth",
"args": [1]
}, {
"name": "setStrokeStyle",
"args": ["rgba(0,0,0,0.25)"]
}, {
"name": "beginPath",
"args": []
}, {
"name": "moveTo",
"args": [101.5, 100]
}, {
"name": "lineTo",
"args": [101.5, 110]
}, {
"name": "moveTo",
"args": [101.5, 0]
}, {
"name": "lineTo",
"args": [101.5, 100]
}, {
"name": "stroke",
"args": []
}, {
"name": "save",
"args": []
}, {
"name": "translate",
"args": [101, 110]
}, {
"name": "rotate",
"args": [-0]
}, {
"name": "fillText",
"args": ["0", 0, 0]
}, {
"name": "restore",
"args": []
}, {
"name": "setLineWidth",
"args": [1]
}, {
"name": "setStrokeStyle",
"args": ["rgba(0, 0, 0, 0.1)"]
}, {
"name": "beginPath",
"args": []
}, {
"name": "moveTo",
"args": [198.5, 100]
}, {
"name": "lineTo",
"args": [198.5, 110]
}, {
"name": "moveTo",
"args": [198.5, 0]
}, {
"name": "lineTo",
"args": [198.5, 100]
}, {
"name": "stroke",
"args": []
}, {
"name": "save",
"args": []
}, {
"name": "translate",
"args": [198, 110]
}, {
"name": "rotate",
"args": [-0]
}, {
"name": "fillText",
"args": ["5", 0, 0]
}, {
"name": "restore",
"args": []
}, {
"name": "setLineWidth",
"args": [1]
}, {
"name": "setStrokeStyle",
"args": ["rgba(0, 0, 0, 0.1)"]
}, {
"name": "beginPath",
"args": []
}, {
"name": "moveTo",
"args": [0, 100.5]
}, {
"name": "lineTo",
"args": [200, 100.5]
}, {
"name": "stroke",
"args": []
}];
expect(mockContext.getCalls()).toEqual(expected);
// Turn off some drawing
config.gridLines.drawTicks = false;
config.gridLines.drawOnChartArea = false;
config.ticks.display = false;
config.scaleLabel.display = true;
config.scaleLabel.labelString = 'myLabel';
mockContext.resetCalls();
horizontalScale.draw();
expect(mockContext.getCalls()).toEqual([{
"name": "setFillStyle",
"args": ["#666"]
}, {
"name": "setLineWidth",
"args": [1]
}, {
"name": "setStrokeStyle",
"args": ["rgba(0, 0, 0, 0.1)"]
}, {
"name": "beginPath",
"args": []
}, {
"name": "stroke",
"args": []
}, {
"name": "setLineWidth",
"args": [1]
}, {
"name": "setStrokeStyle",
"args": ["rgba(0,0,0,0.25)"]
}, {
"name": "beginPath",
"args": []
}, {
"name": "stroke",
"args": []
}, {
"name": "setLineWidth",
"args": [1]
}, {
"name": "setStrokeStyle",
"args": ["rgba(0, 0, 0, 0.1)"]
}, {
"name": "beginPath",
"args": []
}, {
"name": "stroke",
"args": []
}, {
"name": "setFillStyle",
"args": ["#666"]
}, {
"name": "fillText",
"args": ["myLabel", 100, 122]
}, {
"name": "setLineWidth",
"args": [1]
}, {
"name": "setStrokeStyle",
"args": ["rgba(0, 0, 0, 0.1)"]
}, {
"name": "beginPath",
"args": []
}, {
"name": "moveTo",
"args": [0, 100.5]
}, {
"name": "lineTo",
"args": [200, 100.5]
}, {
"name": "stroke",
"args": []
}]);
// Turn off display
mockContext.resetCalls();
config.display = false;
horizontalScale.draw();
expect(mockContext.getCalls()).toEqual([]);
});
it('Should draw correctly vertically', function() {
var scaleID = 'myScale';
var mockData = {
datasets: [{
xAxisID: scaleID, // for the horizontal scale
yAxisID: scaleID,
data: [-5, 0, 2, -3, 5]
}]
};
var mockContext = window.createMockContext();
var config = Chart.helpers.clone(Chart.scaleService.getScaleDefaults('linear'));
var Constructor = Chart.scaleService.getScaleConstructor('linear');
var verticalScale = new Constructor({
ctx: mockContext,
options: config,
chart: {
data: mockData
},
id: scaleID
});
var minSize = verticalScale.update(100, 300);
minSize = verticalScale.update(30, 300, {
left: 0,
right: 0,
top: 15,
bottom: 3
});
expect(minSize).toEqual({
width: 30,
height: 300,
});
verticalScale.left = 0;
verticalScale.right = minSize.width;
verticalScale.top = 0;
verticalScale.bottom = minSize.height;
var chartArea = {
top: 0,
bottom: minSize.height,
left: minSize.width,
right: minSize.width + 100
};
mockContext.resetCalls();
verticalScale.draw(chartArea);
expect(mockContext.getCalls()).toEqual([{
"name": "setFillStyle",
"args": ["#666"]
}, {
"name": "setLineWidth",
"args": [1]
}, {
"name": "setStrokeStyle",
"args": ["rgba(0, 0, 0, 0.1)"]
}, {
"name": "beginPath",
"args": []
}, {
"name": "moveTo",
"args": [25, 0.5]
}, {
"name": "lineTo",
"args": [30, 0.5]
}, {
"name": "moveTo",
"args": [30, 0.5]
}, {
"name": "lineTo",
"args": [130, 0.5]
}, {
"name": "stroke",
"args": []
}, {
"name": "save",
"args": []
}, {
"name": "translate",
"args": [20, 0]
}, {
"name": "rotate",
"args": [-0]
}, {
"name": "fillText",
"args": ["5", 0, 0]
}, {
"name": "restore",
"args": []
}, {
"name": "beginPath",
"args": []
}, {
"name": "moveTo",
"args": [25, 30.5]
}, {
"name": "lineTo",
"args": [30, 30.5]
}, {
"name": "moveTo",
"args": [30, 30.5]
}, {
"name": "lineTo",
"args": [130, 30.5]
}, {
"name": "stroke",
"args": []
}, {
"name": "save",
"args": []
}, {
"name": "translate",
"args": [20, 30]
}, {
"name": "rotate",
"args": [-0]
}, {
"name": "fillText",
"args": ["4", 0, 0]
}, {
"name": "restore",
"args": []
}, {
"name": "beginPath",
"args": []
}, {
"name": "moveTo",
"args": [25, 59.5]
}, {
"name": "lineTo",
"args": [30, 59.5]
}, {
"name": "moveTo",
"args": [30, 59.5]
}, {
"name": "lineTo",
"args": [130, 59.5]
}, {
"name": "stroke",
"args": []
}, {
"name": "save",
"args": []
}, {
"name": "translate",
"args": [20, 59]
}, {
"name": "rotate",
"args": [-0]
}, {
"name": "fillText",
"args": ["3", 0, 0]
}, {
"name": "restore",
"args": []
}, {
"name": "beginPath",
"args": []
}, {
"name": "moveTo",
"args": [25, 89.5]
}, {
"name": "lineTo",
"args": [30, 89.5]
}, {
"name": "moveTo",
"args": [30, 89.5]
}, {
"name": "lineTo",
"args": [130, 89.5]
}, {
"name": "stroke",
"args": []
}, {
"name": "save",
"args": []
}, {
"name": "translate",
"args": [20, 89]
}, {
"name": "rotate",
"args": [-0]
}, {
"name": "fillText",
"args": ["2", 0, 0]
}, {
"name": "restore",
"args": []
}, {
"name": "beginPath",
"args": []
}, {
"name": "moveTo",
"args": [25, 119.5]
}, {
"name": "lineTo",
"args": [30, 119.5]
}, {
"name": "moveTo",
"args": [30, 119.5]
}, {
"name": "lineTo",
"args": [130, 119.5]
}, {
"name": "stroke",
"args": []
}, {
"name": "save",
"args": []
}, {
"name": "translate",
"args": [20, 119]
}, {
"name": "rotate",
"args": [-0]
}, {
"name": "fillText",
"args": ["1", 0, 0]
}, {
"name": "restore",
"args": []
}, {
"name": "setLineWidth",
"args": [1]
}, {
"name": "setStrokeStyle",
"args": ["rgba(0,0,0,0.25)"]
}, {
"name": "beginPath",
"args": []
}, {
"name": "moveTo",
"args": [25, 149.5]
}, {
"name": "lineTo",
"args": [30, 149.5]
}, {
"name": "moveTo",
"args": [30, 149.5]
}, {
"name": "lineTo",
"args": [130, 149.5]
}, {
"name": "stroke",
"args": []
}, {
"name": "save",
"args": []
}, {
"name": "translate",
"args": [20, 149]
}, {
"name": "rotate",
"args": [-0]
}, {
"name": "fillText",
"args": ["0", 0, 0]
}, {
"name": "restore",
"args": []
}, {
"name": "setLineWidth",
"args": [1]
}, {
"name": "setStrokeStyle",
"args": ["rgba(0, 0, 0, 0.1)"]
}, {
"name": "beginPath",
"args": []
}, {
"name": "moveTo",
"args": [25, 178.5]
}, {
"name": "lineTo",
"args": [30, 178.5]
}, {
"name": "moveTo",
"args": [30, 178.5]
}, {
"name": "lineTo",
"args": [130, 178.5]
}, {
"name": "stroke",
"args": []
}, {
"name": "save",
"args": []
}, {
"name": "translate",
"args": [20, 178]
}, {
"name": "rotate",
"args": [-0]
}, {
"name": "fillText",
"args": ["-1", 0, 0]
}, {
"name": "restore",
"args": []
}, {
"name": "beginPath",
"args": []
}, {
"name": "moveTo",
"args": [25, 208.5]
}, {
"name": "lineTo",
"args": [30, 208.5]
}, {
"name": "moveTo",
"args": [30, 208.5]
}, {
"name": "lineTo",
"args": [130, 208.5]
}, {
"name": "stroke",
"args": []
}, {
"name": "save",
"args": []
}, {
"name": "translate",
"args": [20, 208]
}, {
"name": "rotate",
"args": [-0]
}, {
"name": "fillText",
"args": ["-2", 0, 0]
}, {
"name": "restore",
"args": []
}, {
"name": "beginPath",
"args": []
}, {
"name": "moveTo",
"args": [25, 238.5]
}, {
"name": "lineTo",
"args": [30, 238.5]
}, {
"name": "moveTo",
"args": [30, 238.5]
}, {
"name": "lineTo",
"args": [130, 238.5]
}, {
"name": "stroke",
"args": []
}, {
"name": "save",
"args": []
}, {
"name": "translate",
"args": [20, 238]
}, {
"name": "rotate",
"args": [-0]
}, {
"name": "fillText",
"args": ["-3", 0, 0]
}, {
"name": "restore",
"args": []
}, {
"name": "beginPath",
"args": []
}, {
"name": "moveTo",
"args": [25, 267.5]
}, {
"name": "lineTo",
"args": [30, 267.5]
}, {
"name": "moveTo",
"args": [30, 267.5]
}, {
"name": "lineTo",
"args": [130, 267.5]
}, {
"name": "stroke",
"args": []
}, {
"name": "save",
"args": []
}, {
"name": "translate",
"args": [20, 267]
}, {
"name": "rotate",
"args": [-0]
}, {
"name": "fillText",
"args": ["-4", 0, 0]
}, {
"name": "restore",
"args": []
}, {
"name": "beginPath",
"args": []
}, {
"name": "moveTo",
"args": [25, 297.5]
}, {
"name": "lineTo",
"args": [30, 297.5]
}, {
"name": "moveTo",
"args": [30, 297.5]
}, {
"name": "lineTo",
"args": [130, 297.5]
}, {
"name": "stroke",
"args": []
}, {
"name": "save",
"args": []
}, {
"name": "translate",
"args": [20, 297]
}, {
"name": "rotate",
"args": [-0]
}, {
"name": "fillText",
"args": ["-5", 0, 0]
}, {
"name": "restore",
"args": []
}, {
"name": "setLineWidth",
"args": [1]
}, {
"name": "setStrokeStyle",
"args": ["rgba(0, 0, 0, 0.1)"]
}, {
"name": "beginPath",
"args": []
}, {
"name": "moveTo",
"args": [30.5, 0]
}, {
"name": "lineTo",
"args": [30.5, 300]
}, {
"name": "stroke",
"args": []
}]);
// Turn off some drawing
config.gridLines.drawTicks = false;
config.gridLines.drawOnChartArea = false;
config.ticks.display = false;
config.scaleLabel.display = true;
mockContext.resetCalls();
verticalScale.draw();
expect(mockContext.getCalls()).toEqual([{
"name": "setFillStyle",
"args": ["#666"]
}, {
"name": "setLineWidth",
"args": [1]
}, {
"name": "setStrokeStyle",
"args": ["rgba(0, 0, 0, 0.1)"]
}, {
"name": "beginPath",
"args": []
}, {
"name": "stroke",
"args": []
}, {
"name": "beginPath",
"args": []
}, {
"name": "stroke",
"args": []
}, {
"name": "beginPath",
"args": []
}, {
"name": "stroke",
"args": []
}, {
"name": "beginPath",
"args": []
}, {
"name": "stroke",
"args": []
}, {
"name": "beginPath",
"args": []
}, {
"name": "stroke",
"args": []
}, {
"name": "setLineWidth",
"args": [1]
}, {
"name": "setStrokeStyle",
"args": ["rgba(0,0,0,0.25)"]
}, {
"name": "beginPath",
"args": []
}, {
"name": "stroke",
"args": []
}, {
"name": "setLineWidth",
"args": [1]
}, {
"name": "setStrokeStyle",
"args": ["rgba(0, 0, 0, 0.1)"]
}, {
"name": "beginPath",
"args": []
}, {
"name": "stroke",
"args": []
}, {
"name": "beginPath",
"args": []
}, {
"name": "stroke",
"args": []
}, {
"name": "beginPath",
"args": []
}, {
"name": "stroke",
"args": []
}, {
"name": "beginPath",
"args": []
}, {
"name": "stroke",
"args": []
}, {
"name": "beginPath",
"args": []
}, {
"name": "stroke",
"args": []
}, {
"name": "save",
"args": []
}, {
"name": "translate",
"args": [6, 150]
}, {
"name": "rotate",
"args": [-1.5707963267948966]
}, {
"name": "setFillStyle",
"args": ["#666"]
}, {
"name": "fillText",
"args": ["", 0, 0]
}, {
"name": "restore",
"args": []
}, {
"name": "setLineWidth",
"args": [1]
}, {
"name": "setStrokeStyle",
"args": ["rgba(0, 0, 0, 0.1)"]
}, {
"name": "beginPath",
"args": []
}, {
"name": "moveTo",
"args": [30.5, 0]
}, {
"name": "lineTo",
"args": [30.5, 300]
}, {
"name": "stroke",
"args": []
}]);
});
it("should not draw lines where the callback function returned null or undefined", function() {
var scaleID = 'myScale';
var mockData = {
datasets: [{
xAxisID: scaleID, // for the horizontal scale
yAxisID: scaleID,
data: [-5, 0, 2, -3, 5]
}]
};
var mockContext = window.createMockContext();
var config = Chart.helpers.clone(Chart.scaleService.getScaleDefaults('linear'));
config.ticks.callback = function(tickValue, index) {
return index % 2 === 0 ? null : tickValue.toString();
};
var Constructor = Chart.scaleService.getScaleConstructor('linear');
var verticalScale = new Constructor({
ctx: mockContext,
options: config,
chart: {
data: mockData
},
id: scaleID
});
var minSize = verticalScale.update(100, 300);
minSize = verticalScale.update(30, 300, {
left: 0,
right: 0,
top: 15,
bottom: 3
});
expect(minSize).toEqual({
width: 30,
height: 300,
});
verticalScale.left = 0;
verticalScale.right = minSize.width;
verticalScale.top = 0;
verticalScale.bottom = minSize.height;
var chartArea = {
top: 0,
bottom: minSize.height,
left: minSize.width,
right: minSize.width + 100
};
mockContext.resetCalls();
verticalScale.draw(chartArea);
expect(mockContext.getCalls()).toEqual([{
"name": "setFillStyle",
"args": ["#666"]
}, {
"name": "setLineWidth",
"args": [1]
}, {
"name": "setStrokeStyle",
"args": ["rgba(0, 0, 0, 0.1)"]
}, {
"name": "beginPath",
"args": []
}, {
"name": "moveTo",
"args": [25, 30.5]
}, {
"name": "lineTo",
"args": [30, 30.5]
}, {
"name": "moveTo",
"args": [30, 30.5]
}, {
"name": "lineTo",
"args": [130, 30.5]
}, {
"name": "stroke",
"args": []
}, {
"name": "save",
"args": []
}, {
"name": "translate",
"args": [20, 30]
}, {
"name": "rotate",
"args": [-0]
}, {
"name": "fillText",
"args": ["4", 0, 0]
}, {
"name": "restore",
"args": []
}, {
"name": "beginPath",
"args": []
}, {
"name": "moveTo",
"args": [25, 89.5]
}, {
"name": "lineTo",
"args": [30, 89.5]
}, {
"name": "moveTo",
"args": [30, 89.5]
}, {
"name": "lineTo",
"args": [130, 89.5]
}, {
"name": "stroke",
"args": []
}, {
"name": "save",
"args": []
}, {
"name": "translate",
"args": [20, 89]
}, {
"name": "rotate",
"args": [-0]
}, {
"name": "fillText",
"args": ["2", 0, 0]
}, {
"name": "restore",
"args": []
}, {
"name": "setLineWidth",
"args": [1]
}, {
"name": "setStrokeStyle",
"args": ["rgba(0,0,0,0.25)"]
}, {
"name": "beginPath",
"args": []
}, {
"name": "moveTo",
"args": [25, 149.5]
}, {
"name": "lineTo",
"args": [30, 149.5]
}, {
"name": "moveTo",
"args": [30, 149.5]
}, {
"name": "lineTo",
"args": [130, 149.5]
}, {
"name": "stroke",
"args": []
}, {
"name": "save",
"args": []
}, {
"name": "translate",
"args": [20, 149]
}, {
"name": "rotate",
"args": [-0]
}, {
"name": "fillText",
"args": ["0", 0, 0]
}, {
"name": "restore",
"args": []
}, {
"name": "setLineWidth",
"args": [1]
}, {
"name": "setStrokeStyle",
"args": ["rgba(0, 0, 0, 0.1)"]
}, {
"name": "beginPath",
"args": []
}, {
"name": "moveTo",
"args": [25, 208.5]
}, {
"name": "lineTo",
"args": [30, 208.5]
}, {
"name": "moveTo",
"args": [30, 208.5]
}, {
"name": "lineTo",
"args": [130, 208.5]
}, {
"name": "stroke",
"args": []
}, {
"name": "save",
"args": []
}, {
"name": "translate",
"args": [20, 208]
}, {
"name": "rotate",
"args": [-0]
}, {
"name": "fillText",
"args": ["-2", 0, 0]
}, {
"name": "restore",
"args": []
}, {
"name": "beginPath",
"args": []
}, {
"name": "moveTo",
"args": [25, 267.5]
}, {
"name": "lineTo",
"args": [30, 267.5]
}, {
"name": "moveTo",
"args": [30, 267.5]
}, {
"name": "lineTo",
"args": [130, 267.5]
}, {
"name": "stroke",
"args": []
}, {
"name": "save",
"args": []
}, {
"name": "translate",
"args": [20, 267]
}, {
"name": "rotate",
"args": [-0]
}, {
"name": "fillText",
"args": ["-4", 0, 0]
}, {
"name": "restore",
"args": []
}, {
"name": "setLineWidth",
"args": [1]
}, {
"name": "setStrokeStyle",
"args": ["rgba(0, 0, 0, 0.1)"]
}, {
"name": "beginPath",
"args": []
}, {
"name": "moveTo",
"args": [30.5, 0]
}, {
"name": "lineTo",
"args": [30.5, 300]
}, {
"name": "stroke",
"args": []
}])
});
});