Chart.js/test/scale.logarithmic.tests.js

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describe('Logarithmic Scale tests', function() {
it('Should register the constructor with the scale service', function() {
var Constructor = Chart.scaleService.getScaleConstructor('logarithmic');
expect(Constructor).not.toBe(undefined);
expect(typeof Constructor).toBe('function');
});
it('Should have the correct default config', function() {
var defaultConfig = Chart.scaleService.getScaleDefaults('logarithmic');
expect(defaultConfig).toEqual({
display: true,
position: "left",
gridLines: {
show: true,
color: "rgba(0, 0, 0, 0.1)",
lineWidth: 1,
drawOnChartArea: true,
drawTicks: true,
zeroLineWidth: 1,
zeroLineColor: "rgba(0,0,0,0.25)",
},
reverse: false,
override: null,
labels: {
show: true,
mirror: false,
padding: 10,
template: "<%var remain = value / (Math.pow(10, Math.floor(Chart.helpers.log10(value))));if (remain === 1 || remain === 2 || remain === 5) {%><%=value.toExponential()%><%} else {%><%= null %><%}%>",
fontSize: 12,
fontStyle: "normal",
fontColor: "#666",
fontFamily: "Helvetica Neue"
}
});
});
it('Should correctly determine the max & min data values', function() {
var scaleID = 'myScale';
var mockData = {
datasets: [{
yAxisID: scaleID,
data: [10, 5, 5000, 78, 450]
}, {
yAxisID: 'second scale',
data: [1, 1000, 10, 100],
}, {
yAxisID: scaleID,
data: [150]
}]
};
var Constructor = Chart.scaleService.getScaleConstructor('logarithmic');
var scale = new Constructor({
ctx: {},
options: Chart.scaleService.getScaleDefaults('logarithmic'), // use default config for scale
data: mockData,
id: scaleID
});
expect(scale).not.toEqual(undefined); // must construct
expect(scale.min).toBe(undefined); // not yet set
expect(scale.max).toBe(undefined);
scale.calculateRange();
expect(scale.min).toBe(5);
expect(scale.max).toBe(5000);
});
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: 2,
y: 6
}, {
x: 65,
y: 121
}, {
x: 99,
y: 7
}]
}]
};
var config = Chart.helpers.clone(Chart.scaleService.getScaleDefaults('logarithmic'));
var Constructor = Chart.scaleService.getScaleConstructor('logarithmic');
var verticalScale = new Constructor({
ctx: {},
options: config,
data: mockData,
id: scaleID
});
verticalScale.calculateRange();
expect(verticalScale.min).toBe(6);
expect(verticalScale.max).toBe(121);
var horizontalConfig = Chart.helpers.clone(config);
horizontalConfig.position = 'bottom';
var horizontalScale = new Constructor({
ctx: {},
options: horizontalConfig,
data: mockData,
id: scaleID,
});
horizontalScale.calculateRange();
expect(horizontalScale.min).toBe(2);
expect(horizontalScale.max).toBe(99);
});
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, 1, 5, 78, 100]
}, {
yAxisID: 'second scale',
data: [-1000, 1000],
}, {
yAxisID: scaleID,
data: [150, 10, 10, 100, 10, 9]
}]
};
var config = Chart.helpers.clone(Chart.scaleService.getScaleDefaults('logarithmic'));
config.stacked = true; // enable scale stacked mode
var Constructor = Chart.scaleService.getScaleConstructor('logarithmic');
var scale = new Constructor({
ctx: {},
options: config,
data: mockData,
id: scaleID
});
scale.calculateRange();
expect(scale.min).toBe(11);
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('logarithmic'));
var Constructor = Chart.scaleService.getScaleConstructor('logarithmic');
var scale = new Constructor({
ctx: {},
options: config,
data: mockData,
id: scaleID
});
scale.calculateRange();
expect(scale.min).toBe(1);
expect(scale.max).toBe(10);
mockData.datasets = [{
yAxisID: scaleID,
data: [0.15, 0.15]
}];
scale.calculateRange();
expect(scale.min).toBe(0.01);
expect(scale.max).toBe(1);
});
it('Should generate tick marks', function() {
var scaleID = 'myScale';
var mockData = {
datasets: [{
yAxisID: scaleID,
data: [10, 5, 1, 25, 78]
}, ]
};
var config = Chart.helpers.clone(Chart.scaleService.getScaleDefaults('logarithmic'));
var Constructor = Chart.scaleService.getScaleConstructor('logarithmic');
var scale = new Constructor({
ctx: {},
options: config,
data: mockData,
id: scaleID
});
scale.calculateRange();
expect(scale.ticks).toBe(undefined); // not set
// Large enough to be unimportant
var maxWidth = 400;
var maxHeight = 400;
scale.generateTicks(maxWidth, maxHeight);
// Counts down because the lines are drawn top to bottom
expect(scale.ticks).toEqual([100, 90, 80, 70, 60, 50, 40, 30, 20, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1]);
expect(scale.start).toBe(1);
expect(scale.end).toBe(100);
});
it('Should generate tick marks in the correct order in reversed mode', function() {
var scaleID = 'myScale';
var mockData = {
datasets: [{
yAxisID: scaleID,
data: [10, 5, 1, 25, 78]
}, ]
};
var config = Chart.helpers.clone(Chart.scaleService.getScaleDefaults('logarithmic'));
config.reverse = true;
var Constructor = Chart.scaleService.getScaleConstructor('logarithmic');
var scale = new Constructor({
ctx: {},
options: config,
data: mockData,
id: scaleID
});
scale.calculateRange();
expect(scale.ticks).toBe(undefined); // not set
// Large enough to be unimportant
var maxWidth = 400;
var maxHeight = 400;
scale.generateTicks(maxWidth, maxHeight);
// Counts down because the lines are drawn top to bottom
expect(scale.ticks).toEqual([1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 20, 30, 40, 50, 60, 70, 80, 90, 100]);
expect(scale.start).toBe(100);
expect(scale.end).toBe(1);
});
it('Should generate tick marks using the user supplied options', function() {
var scaleID = 'myScale';
var mockData = {
datasets: [{
yAxisID: scaleID,
data: [10, 5, 0, 25, 78]
}, ]
};
var config = Chart.helpers.clone(Chart.scaleService.getScaleDefaults('logarithmic'));
config.override = {
steps: 9,
start: 1,
stepWidth: 1
};
var Constructor = Chart.scaleService.getScaleConstructor('logarithmic');
var scale = new Constructor({
ctx: {},
options: config,
data: mockData,
id: scaleID
});
scale.calculateRange();
// Large enough to be unimportant
var maxWidth = 400;
var maxHeight = 400;
scale.generateTicks(maxWidth, maxHeight);
expect(scale.ticks).toEqual([10, 9, 8, 7, 6, 5, 4, 3, 2, 1]);
expect(scale.start).toBe(1);
expect(scale.end).toBe(10);
});
it('Should build labels using the default template', function() {
var scaleID = 'myScale';
var mockData = {
datasets: [{
yAxisID: scaleID,
data: [10, 5, 1, 25, 78]
}, ]
};
var config = Chart.helpers.clone(Chart.scaleService.getScaleDefaults('logarithmic'));
var Constructor = Chart.scaleService.getScaleConstructor('logarithmic');
var scale = new Constructor({
ctx: {},
options: config,
data: mockData,
id: scaleID
});
scale.calculateRange();
// Large enough to be unimportant
var maxWidth = 400;
var maxHeight = 400;
scale.generateTicks(maxWidth, maxHeight);
// Generate labels
scale.buildLabels();
expect(scale.labels).toEqual(['1e+2', '', '', '', '', '5e+1', '', '', '2e+1', '1e+1', '', '', '', '', '5e+0', '', '', '2e+0', '1e+0']);
});
it('Should build labels using the user supplied callback', function() {
var scaleID = 'myScale';
var mockData = {
datasets: [{
yAxisID: scaleID,
data: [10, 5, 1, 25, 78]
}, ]
};
var config = Chart.helpers.clone(Chart.scaleService.getScaleDefaults('logarithmic'));
config.labels.userCallback = function(value, index) {
return index.toString();
};
var Constructor = Chart.scaleService.getScaleConstructor('logarithmic');
var scale = new Constructor({
ctx: {},
options: config,
data: mockData,
id: scaleID
});
scale.calculateRange();
// Large enough to be unimportant
var maxWidth = 400;
var maxHeight = 400;
scale.generateTicks(maxWidth, maxHeight);
// Generate labels
scale.buildLabels();
// Just the index
expect(scale.labels).toEqual(['0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '10', '11', '12', '13', '14', '15', '16', '17', '18']);
});
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: [10, 5, 1, 25, 78]
}]
};
var config = Chart.helpers.clone(Chart.scaleService.getScaleDefaults('logarithmic'));
var Constructor = Chart.scaleService.getScaleConstructor('logarithmic');
var verticalScale = new Constructor({
ctx: {},
options: config,
data: mockData,
id: scaleID
});
verticalScale.calculateRange();
verticalScale.generateTicks(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.getPointPixelForValue(100, 0, 0)).toBe(5); // top + paddingTop
expect(verticalScale.getPointPixelForValue(1, 0, 0)).toBe(105); // bottom - paddingBottom
expect(verticalScale.getPointPixelForValue(10, 0, 0)).toBe(55); // halfway
var horizontalConfig = Chart.helpers.clone(config);
horizontalConfig.position = 'bottom';
var horizontalScale = new Constructor({
ctx: {},
options: horizontalConfig,
data: mockData,
id: scaleID,
});
horizontalScale.calculateRange();
horizontalScale.generateTicks(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.getPointPixelForValue(100, 0, 0)).toBe(105); // right - paddingRight
expect(horizontalScale.getPointPixelForValue(1, 0, 0)).toBe(5); // left + paddingLeft
expect(horizontalScale.getPointPixelForValue(10, 0, 0)).toBe(55); // halfway
});
it('should get the correct pixel value for a bar', function() {
var scaleID = 'myScale';
var mockData = {
datasets: [{
xAxisID: scaleID, // for the horizontal scale
yAxisID: scaleID,
data: [10, 5, 1, 25, 78]
}]
};
var config = Chart.helpers.clone(Chart.scaleService.getScaleDefaults('logarithmic'));
var Constructor = Chart.scaleService.getScaleConstructor('logarithmic');
var verticalScale = new Constructor({
ctx: {},
options: config,
data: mockData,
id: scaleID
});
verticalScale.calculateRange();
verticalScale.generateTicks(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.calculateBarBase()).toBe(105); // bottom
expect(verticalScale.calculateBarY(0, 3)).toBe(35.10299956639811); // bottom
});
it('should fit correctly', function() {
var scaleID = 'myScale';
var mockData = {
datasets: [{
xAxisID: scaleID, // for the horizontal scale
yAxisID: scaleID,
data: [10, 5, 1, 25, 78]
}]
};
var mockContext = window.createMockContext();
var config = Chart.helpers.clone(Chart.scaleService.getScaleDefaults('logarithmic'));
var Constructor = Chart.scaleService.getScaleConstructor('logarithmic');
var verticalScale = new Constructor({
ctx: mockContext,
options: config,
data: mockData,
id: scaleID
});
var minSize = verticalScale.fit(100, 300);
expect(minSize).toEqual({
width: 53,
height: 300,
});
expect(verticalScale.width).toBe(53);
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.fit(53, 300, {
left: 0,
right: 0,
top: 15,
bottom: 3
});
expect(minSize).toEqual({
width: 53,
height: 300,
});
expect(verticalScale.paddingTop).toBe(0);
expect(verticalScale.paddingBottom).toBe(3);
expect(verticalScale.paddingLeft).toBe(0);
expect(verticalScale.paddingRight).toBe(0);
});
it('should fit correctly when horizontal', function() {
var scaleID = 'myScale';
var mockData = {
datasets: [{
xAxisID: scaleID, // for the horizontal scale
yAxisID: scaleID,
data: [10, 5, 1, 25, 78]
}]
};
var mockContext = window.createMockContext();
var config = Chart.helpers.clone(Chart.scaleService.getScaleDefaults('logarithmic'));
config.position = "bottom";
var Constructor = Chart.scaleService.getScaleConstructor('logarithmic');
var verticalScale = new Constructor({
ctx: mockContext,
options: config,
data: mockData,
id: scaleID
});
var minSize = verticalScale.fit(100, 300);
expect(minSize).toEqual({
width: 100,
height: 28,
});
expect(verticalScale.width).toBe(100);
expect(verticalScale.height).toBe(28);
expect(verticalScale.paddingTop).toBe(0);
expect(verticalScale.paddingBottom).toBe(0);
expect(verticalScale.paddingLeft).toBe(20);
expect(verticalScale.paddingRight).toBe(20);
// Refit with margins to see the padding go away
minSize = verticalScale.fit(100, 28, {
left: 10,
right: 6,
top: 15,
bottom: 3
});
expect(minSize).toEqual({
width: 100,
height: 28,
});
expect(verticalScale.paddingTop).toBe(0);
expect(verticalScale.paddingBottom).toBe(0);
expect(verticalScale.paddingLeft).toBe(10);
expect(verticalScale.paddingRight).toBe(14);
});
it('should draw correctly horizontally', function() {
var scaleID = 'myScale';
var mockData = {
datasets: [{
xAxisID: scaleID, // for the horizontal scale
yAxisID: scaleID,
data: [10, 5, 1, 25, 78]
}]
};
var mockContext = window.createMockContext();
var config = Chart.helpers.clone(Chart.scaleService.getScaleDefaults('logarithmic'));
config.position = "bottom";
var Constructor = Chart.scaleService.getScaleConstructor('logarithmic');
var horizontalScale = new Constructor({
ctx: mockContext,
options: config,
data: mockData,
id: scaleID
});
var minSize = horizontalScale.fit(100, 300);
minSize = horizontalScale.fit(100, 28, {
left: 10,
right: 6,
top: 15,
bottom: 3
});
horizontalScale.left = 0;
horizontalScale.right = minSize.width;
horizontalScale.top = 0;
horizontalScale.bottom = minSize.height;
var chartArea = {
top: 100,
bottom: 0,
left: 0,
right: minSize.width
};
horizontalScale.draw(chartArea);
expect(mockContext.getCalls()).toEqual([{
"name": "measureText",
"args": ["1e+0"]
}, {
"name": "measureText",
"args": ["1e+2"]
}, {
"name": "measureText",
"args": ["1e+0"]
}, {
"name": "measureText",
"args": ["1e+2"]
}, {
"name": "setFillStyle",
"args": ["#666"]
}, {
"name": "setLineWidth",
"args": [1]
}, {
"name": "setStrokeStyle",
"args": ["rgba(0,0,0,0.25)"]
}, {
"name": "beginPath",
"args": []
}, {
"name": "moveTo",
"args": [10.5, 0]
}, {
"name": "lineTo",
"args": [10.5, 5]
}, {
"name": "moveTo",
"args": [10.5, 100]
}, {
"name": "lineTo",
"args": [10.5, 0]
}, {
"name": "stroke",
"args": []
}, {
"name": "setLineWidth",
"args": [1]
}, {
"name": "setStrokeStyle",
"args": ["rgba(0, 0, 0, 0.1)"]
}, {
"name": "beginPath",
"args": []
}, {
"name": "moveTo",
"args": [21.939139835231288, 0]
}, {
"name": "lineTo",
"args": [21.939139835231288, 5]
}, {
"name": "moveTo",
"args": [21.939139835231288, 100]
}, {
"name": "lineTo",
"args": [21.939139835231288, 0]
}, {
"name": "stroke",
"args": []
}, {
"name": "beginPath",
"args": []
}, {
"name": "moveTo",
"args": [28.63060767934717, 0]
}, {
"name": "lineTo",
"args": [28.63060767934717, 5]
}, {
"name": "moveTo",
"args": [28.63060767934717, 100]
}, {
"name": "lineTo",
"args": [28.63060767934717, 0]
}, {
"name": "stroke",
"args": []
}, {
"name": "beginPath",
"args": []
}, {
"name": "moveTo",
"args": [33.378279670462575, 0]
}, {
"name": "lineTo",
"args": [33.378279670462575, 5]
}, {
"name": "moveTo",
"args": [33.378279670462575, 100]
}, {
"name": "lineTo",
"args": [33.378279670462575, 0]
}, {
"name": "stroke",
"args": []
}, {
"name": "beginPath",
"args": []
}, {
"name": "moveTo",
"args": [37.06086016476871, 0]
}, {
"name": "lineTo",
"args": [37.06086016476871, 5]
}, {
"name": "moveTo",
"args": [37.06086016476871, 100]
}, {
"name": "lineTo",
"args": [37.06086016476871, 0]
}, {
"name": "stroke",
"args": []
}, {
"name": "beginPath",
"args": []
}, {
"name": "moveTo",
"args": [40.06974751457846, 0]
}, {
"name": "lineTo",
"args": [40.06974751457846, 5]
}, {
"name": "moveTo",
"args": [40.06974751457846, 100]
}, {
"name": "lineTo",
"args": [40.06974751457846, 0]
}, {
"name": "stroke",
"args": []
}, {
"name": "beginPath",
"args": []
}, {
"name": "moveTo",
"args": [42.613725520541756, 0]
}, {
"name": "lineTo",
"args": [42.613725520541756, 5]
}, {
"name": "moveTo",
"args": [42.613725520541756, 100]
}, {
"name": "lineTo",
"args": [42.613725520541756, 0]
}, {
"name": "stroke",
"args": []
}, {
"name": "beginPath",
"args": []
}, {
"name": "moveTo",
"args": [44.817419505693856, 0]
}, {
"name": "lineTo",
"args": [44.817419505693856, 5]
}, {
"name": "moveTo",
"args": [44.817419505693856, 100]
}, {
"name": "lineTo",
"args": [44.817419505693856, 0]
}, {
"name": "stroke",
"args": []
}, {
"name": "beginPath",
"args": []
}, {
"name": "moveTo",
"args": [46.76121535869434, 0]
}, {
"name": "lineTo",
"args": [46.76121535869434, 5]
}, {
"name": "moveTo",
"args": [46.76121535869434, 100]
}, {
"name": "lineTo",
"args": [46.76121535869434, 0]
}, {
"name": "stroke",
"args": []
}, {
"name": "beginPath",
"args": []
}, {
"name": "moveTo",
"args": [48.5, 0]
}, {
"name": "lineTo",
"args": [48.5, 5]
}, {
"name": "moveTo",
"args": [48.5, 100]
}, {
"name": "lineTo",
"args": [48.5, 0]
}, {
"name": "stroke",
"args": []
}, {
"name": "beginPath",
"args": []
}, {
"name": "moveTo",
"args": [59.93913983523129, 0]
}, {
"name": "lineTo",
"args": [59.93913983523129, 5]
}, {
"name": "moveTo",
"args": [59.93913983523129, 100]
}, {
"name": "lineTo",
"args": [59.93913983523129, 0]
}, {
"name": "stroke",
"args": []
}, {
"name": "beginPath",
"args": []
}, {
"name": "moveTo",
"args": [66.63060767934718, 0]
}, {
"name": "lineTo",
"args": [66.63060767934718, 5]
}, {
"name": "moveTo",
"args": [66.63060767934718, 100]
}, {
"name": "lineTo",
"args": [66.63060767934718, 0]
}, {
"name": "stroke",
"args": []
}, {
"name": "beginPath",
"args": []
}, {
"name": "moveTo",
"args": [71.37827967046258, 0]
}, {
"name": "lineTo",
"args": [71.37827967046258, 5]
}, {
"name": "moveTo",
"args": [71.37827967046258, 100]
}, {
"name": "lineTo",
"args": [71.37827967046258, 0]
}, {
"name": "stroke",
"args": []
}, {
"name": "beginPath",
"args": []
}, {
"name": "moveTo",
"args": [75.06086016476871, 0]
}, {
"name": "lineTo",
"args": [75.06086016476871, 5]
}, {
"name": "moveTo",
"args": [75.06086016476871, 100]
}, {
"name": "lineTo",
"args": [75.06086016476871, 0]
}, {
"name": "stroke",
"args": []
}, {
"name": "beginPath",
"args": []
}, {
"name": "moveTo",
"args": [78.06974751457845, 0]
}, {
"name": "lineTo",
"args": [78.06974751457845, 5]
}, {
"name": "moveTo",
"args": [78.06974751457845, 100]
}, {
"name": "lineTo",
"args": [78.06974751457845, 0]
}, {
"name": "stroke",
"args": []
}, {
"name": "beginPath",
"args": []
}, {
"name": "moveTo",
"args": [80.61372552054176, 0]
}, {
"name": "lineTo",
"args": [80.61372552054176, 5]
}, {
"name": "moveTo",
"args": [80.61372552054176, 100]
}, {
"name": "lineTo",
"args": [80.61372552054176, 0]
}, {
"name": "stroke",
"args": []
}, {
"name": "beginPath",
"args": []
}, {
"name": "moveTo",
"args": [82.81741950569385, 0]
}, {
"name": "lineTo",
"args": [82.81741950569385, 5]
}, {
"name": "moveTo",
"args": [82.81741950569385, 100]
}, {
"name": "lineTo",
"args": [82.81741950569385, 0]
}, {
"name": "stroke",
"args": []
}, {
"name": "beginPath",
"args": []
}, {
"name": "moveTo",
"args": [84.76121535869434, 0]
}, {
"name": "lineTo",
"args": [84.76121535869434, 5]
}, {
"name": "moveTo",
"args": [84.76121535869434, 100]
}, {
"name": "lineTo",
"args": [84.76121535869434, 0]
}, {
"name": "stroke",
"args": []
}, {
"name": "beginPath",
"args": []
}, {
"name": "moveTo",
"args": [86.5, 0]
}, {
"name": "lineTo",
"args": [86.5, 5]
}, {
"name": "moveTo",
"args": [86.5, 100]
}, {
"name": "lineTo",
"args": [86.5, 0]
}, {
"name": "stroke",
"args": []
}, {
"name": "fillText",
"args": ["1e+0", 10, 10]
}, {
"name": "fillText",
"args": ["2e+0", 21.439139835231288, 10]
}, {
"name": "fillText",
"args": ["5e+0", 36.56086016476871, 10]
}, {
"name": "fillText",
"args": ["1e+1", 48, 10]
}, {
"name": "fillText",
"args": ["2e+1", 59.43913983523129, 10]
}, {
"name": "fillText",
"args": ["5e+1", 74.56086016476871, 10]
}, {
"name": "fillText",
"args": ["1e+2", 86, 10]
}]);
// Turn off some drawing
config.gridLines.drawTicks = false;
config.gridLines.drawOnChartArea = false;
config.labels.show = false;
mockContext.resetCalls();
horizontalScale.draw();
expect(mockContext.getCalls()).toEqual([{
"name": "setFillStyle",
"args": ["#666"]
}, {
"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": "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": "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": "beginPath",
"args": []
}, {
"name": "stroke",
"args": []
}, {
"name": "beginPath",
"args": []
}, {
"name": "stroke",
"args": []
}, {
"name": "beginPath",
"args": []
}, {
"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: [10, 5, 1, 2.5, 7.8]
}]
};
var mockContext = window.createMockContext();
var config = Chart.helpers.clone(Chart.scaleService.getScaleDefaults('logarithmic'));
var Constructor = Chart.scaleService.getScaleConstructor('logarithmic');
var verticalScale = new Constructor({
ctx: mockContext,
options: config,
data: mockData,
id: scaleID
});
var minSize = verticalScale.fit(100, 300);
minSize = verticalScale.fit(33, 300, {
left: 0,
right: 0,
top: 15,
bottom: 3
});
expect(minSize).toEqual({
width: 33,
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
};
verticalScale.draw(chartArea);
var expected = [{
"name": "measureText",
"args": ["1e+1"]
}, {
"name": "measureText",
"args": [""]
}, {
"name": "measureText",
"args": [""]
}, {
"name": "measureText",
"args": [""]
}, {
"name": "measureText",
"args": [""]
}, {
"name": "measureText",
"args": ["5e+0"]
}, {
"name": "measureText",
"args": [""]
}, {
"name": "measureText",
"args": [""]
}, {
"name": "measureText",
"args": ["2e+0"]
}, {
"name": "measureText",
"args": ["1e+0"]
}, {
"name": "measureText",
"args": ["1e+1"]
}, {
"name": "measureText",
"args": [""]
}, {
"name": "measureText",
"args": [""]
}, {
"name": "measureText",
"args": [""]
}, {
"name": "measureText",
"args": [""]
}, {
"name": "measureText",
"args": ["5e+0"]
}, {
"name": "measureText",
"args": [""]
}, {
"name": "measureText",
"args": [""]
}, {
"name": "measureText",
"args": ["2e+0"]
}, {
"name": "measureText",
"args": ["1e+0"]
}, {
"name": "setFillStyle",
"args": ["#666"]
}, {
"name": "setLineWidth",
"args": [1]
}, {
"name": "setStrokeStyle",
"args": ["rgba(0,0,0,0.25)"]
}, {
"name": "beginPath",
"args": []
}, {
"name": "moveTo",
"args": [28, 0.5]
}, {
"name": "lineTo",
"args": [33, 0.5]
}, {
"name": "moveTo",
"args": [33, 0.5]
}, {
"name": "lineTo",
"args": [133, 0.5]
}, {
"name": "stroke",
"args": []
}, {
"name": "setLineWidth",
"args": [1]
}, {
"name": "setStrokeStyle",
"args": ["rgba(0, 0, 0, 0.1)"]
}, {
"name": "beginPath",
"args": []
}, {
"name": "moveTo",
"args": [28, 14.089974696520528]
}, {
"name": "lineTo",
"args": [33, 14.089974696520528]
}, {
"name": "moveTo",
"args": [33, 14.089974696520528]
}, {
"name": "lineTo",
"args": [133, 14.089974696520528]
}, {
"name": "stroke",
"args": []
}, {
"name": "beginPath",
"args": []
}, {
"name": "moveTo",
"args": [28, 29.28227386339279]
}, {
"name": "lineTo",
"args": [33, 29.28227386339279]
}, {
"name": "moveTo",
"args": [33, 29.28227386339279]
}, {
"name": "lineTo",
"args": [133, 29.28227386339279]
}, {
"name": "stroke",
"args": []
}, {
"name": "beginPath",
"args": []
}, {
"name": "moveTo",
"args": [28, 46.50588211576573]
}, {
"name": "lineTo",
"args": [33, 46.50588211576573]
}, {
"name": "moveTo",
"args": [33, 46.50588211576573]
}, {
"name": "lineTo",
"args": [133, 46.50588211576573]
}, {
"name": "stroke",
"args": []
}, {
"name": "beginPath",
"args": []
}, {
"name": "moveTo",
"args": [28, 66.38907863605783]
}, {
"name": "lineTo",
"args": [33, 66.38907863605783]
}, {
"name": "moveTo",
"args": [33, 66.38907863605783]
}, {
"name": "lineTo",
"args": [133, 66.38907863605783]
}, {
"name": "stroke",
"args": []
}, {
"name": "beginPath",
"args": []
}, {
"name": "moveTo",
"args": [28, 89.9059087122024]
}, {
"name": "lineTo",
"args": [33, 89.9059087122024]
}, {
"name": "moveTo",
"args": [33, 89.9059087122024]
}, {
"name": "lineTo",
"args": [133, 89.9059087122024]
}, {
"name": "stroke",
"args": []
}, {
"name": "beginPath",
"args": []
}, {
"name": "moveTo",
"args": [28, 118.68818257559516]
}, {
"name": "lineTo",
"args": [33, 118.68818257559516]
}, {
"name": "moveTo",
"args": [33, 118.68818257559516]
}, {
"name": "lineTo",
"args": [133, 118.68818257559516]
}, {
"name": "stroke",
"args": []
}, {
"name": "beginPath",
"args": []
}, {
"name": "moveTo",
"args": [28, 155.79498734826026]
}, {
"name": "lineTo",
"args": [33, 155.79498734826026]
}, {
"name": "moveTo",
"args": [33, 155.79498734826026]
}, {
"name": "lineTo",
"args": [133, 155.79498734826026]
}, {
"name": "stroke",
"args": []
}, {
"name": "beginPath",
"args": []
}, {
"name": "moveTo",
"args": [28, 208.0940912877976]
}, {
"name": "lineTo",
"args": [33, 208.0940912877976]
}, {
"name": "moveTo",
"args": [33, 208.0940912877976]
}, {
"name": "lineTo",
"args": [133, 208.0940912877976]
}, {
"name": "stroke",
"args": []
}, {
"name": "beginPath",
"args": []
}, {
"name": "moveTo",
"args": [28, 297.5]
}, {
"name": "lineTo",
"args": [33, 297.5]
}, {
"name": "moveTo",
"args": [33, 297.5]
}, {
"name": "lineTo",
"args": [133, 297.5]
}, {
"name": "stroke",
"args": []
}, {
"name": "fillText",
"args": ["1e+1", 23, 0]
}, {
"name": "fillText",
"args": ["", 23, 13.589974696520528]
}, {
"name": "fillText",
"args": ["", 23, 28.78227386339279]
}, {
"name": "fillText",
"args": ["", 23, 46.00588211576573]
}, {
"name": "fillText",
"args": ["", 23, 65.88907863605783]
}, {
"name": "fillText",
"args": ["5e+0", 23, 89.4059087122024]
}, {
"name": "fillText",
"args": ["", 23, 118.18818257559516]
}, {
"name": "fillText",
"args": ["", 23, 155.29498734826026]
}, {
"name": "fillText",
"args": ["2e+0", 23, 207.5940912877976]
}, {
"name": "fillText",
"args": ["1e+0", 23, 297]
}];
expect(mockContext.getCalls()).toEqual(expected);
// Turn off some drawing
config.gridLines.drawTicks = false;
config.gridLines.drawOnChartArea = false;
config.labels.show = false;
mockContext.resetCalls();
verticalScale.draw();
expect(mockContext.getCalls()).toEqual([{
"name": "setFillStyle",
"args": ["#666"]
}, {
"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": "beginPath",
"args": []
}, {
"name": "stroke",
"args": []
}, {
"name": "beginPath",
"args": []
}, {
"name": "stroke",
"args": []
}, {
"name": "beginPath",
"args": []
}, {
"name": "stroke",
"args": []
}, {
"name": "beginPath",
"args": []
}, {
"name": "stroke",
"args": []
}]);
});
});