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| Viewing file: Select action/file-type: // Test the rectangle element
describe('Legend block tests', function() {
it('Should be constructed', function() {
var legend = new Chart.Legend({});
expect(legend).not.toBe(undefined);
});
it('should have the correct default config', function() {
expect(Chart.defaults.global.legend).toEqual({
display: true,
position: 'top',
fullWidth: true, // marks that this box should take the full width of the canvas (pushing down other boxes)
reverse: false,
weight: 1000,
// a callback that will handle
onClick: jasmine.any(Function),
onHover: null,
labels: {
boxWidth: 40,
padding: 10,
generateLabels: jasmine.any(Function)
}
});
});
it('should update correctly', function() {
var chart = window.acquireChart({
type: 'bar',
data: {
datasets: [{
label: 'dataset1',
backgroundColor: '#f31',
borderCapStyle: 'butt',
borderDash: [2, 2],
borderDashOffset: 5.5,
data: []
}, {
label: 'dataset2',
hidden: true,
borderJoinStyle: 'miter',
data: []
}, {
label: 'dataset3',
borderWidth: 10,
borderColor: 'green',
pointStyle: 'crossRot',
data: []
}],
labels: []
}
});
expect(chart.legend.legendItems).toEqual([{
text: 'dataset1',
fillStyle: '#f31',
hidden: false,
lineCap: 'butt',
lineDash: [2, 2],
lineDashOffset: 5.5,
lineJoin: undefined,
lineWidth: undefined,
strokeStyle: undefined,
pointStyle: undefined,
datasetIndex: 0
}, {
text: 'dataset2',
fillStyle: undefined,
hidden: true,
lineCap: undefined,
lineDash: undefined,
lineDashOffset: undefined,
lineJoin: 'miter',
lineWidth: undefined,
strokeStyle: undefined,
pointStyle: undefined,
datasetIndex: 1
}, {
text: 'dataset3',
fillStyle: undefined,
hidden: false,
lineCap: undefined,
lineDash: undefined,
lineDashOffset: undefined,
lineJoin: undefined,
lineWidth: 10,
strokeStyle: 'green',
pointStyle: 'crossRot',
datasetIndex: 2
}]);
});
it('should filter items', function() {
var chart = window.acquireChart({
type: 'bar',
data: {
datasets: [{
label: 'dataset1',
backgroundColor: '#f31',
borderCapStyle: 'butt',
borderDash: [2, 2],
borderDashOffset: 5.5,
data: []
}, {
label: 'dataset2',
hidden: true,
borderJoinStyle: 'miter',
data: [],
legendHidden: true
}, {
label: 'dataset3',
borderWidth: 10,
borderColor: 'green',
pointStyle: 'crossRot',
data: []
}],
labels: []
},
options: {
legend: {
labels: {
filter: function(legendItem, data) {
var dataset = data.datasets[legendItem.datasetIndex];
return !dataset.legendHidden;
}
}
}
}
});
expect(chart.legend.legendItems).toEqual([{
text: 'dataset1',
fillStyle: '#f31',
hidden: false,
lineCap: 'butt',
lineDash: [2, 2],
lineDashOffset: 5.5,
lineJoin: undefined,
lineWidth: undefined,
strokeStyle: undefined,
pointStyle: undefined,
datasetIndex: 0
}, {
text: 'dataset3',
fillStyle: undefined,
hidden: false,
lineCap: undefined,
lineDash: undefined,
lineDashOffset: undefined,
lineJoin: undefined,
lineWidth: 10,
strokeStyle: 'green',
pointStyle: 'crossRot',
datasetIndex: 2
}]);
});
it('should not throw when the label options are missing', function() {
var makeChart = function() {
window.acquireChart({
type: 'bar',
data: {
datasets: [{
label: 'dataset1',
backgroundColor: '#f31',
borderCapStyle: 'butt',
borderDash: [2, 2],
borderDashOffset: 5.5,
data: []
}],
labels: []
},
options: {
legend: {
labels: false,
}
}
});
};
expect(makeChart).not.toThrow();
});
it('should draw correctly', function() {
var chart = window.acquireChart({
type: 'bar',
data: {
datasets: [{
label: 'dataset1',
backgroundColor: '#f31',
borderCapStyle: 'butt',
borderDash: [2, 2],
borderDashOffset: 5.5,
data: []
}, {
label: 'dataset2',
hidden: true,
borderJoinStyle: 'miter',
data: []
}, {
label: 'dataset3',
borderWidth: 10,
borderColor: 'green',
data: []
}],
labels: []
}
});
expect(chart.legend.legendHitBoxes.length).toBe(3);
[
{h: 12, l: 101, t: 10, w: 93},
{h: 12, l: 205, t: 10, w: 93},
{h: 12, l: 308, t: 10, w: 93}
].forEach(function(expected, i) {
expect(chart.legend.legendHitBoxes[i].height).toBeCloseToPixel(expected.h);
expect(chart.legend.legendHitBoxes[i].left).toBeCloseToPixel(expected.l);
expect(chart.legend.legendHitBoxes[i].top).toBeCloseToPixel(expected.t);
expect(chart.legend.legendHitBoxes[i].width).toBeCloseToPixel(expected.w);
});
// NOTE(SB) We should get ride of the following tests and use image diff instead.
// For now, as discussed with Evert Timberg, simply comment out.
// See http://humblesoftware.github.io/js-imagediff/test.html
/* chart.legend.ctx = window.createMockContext();
chart.update();
expect(chart.legend.ctx .getCalls()).toEqual([{
"name": "measureText",
"args": ["dataset1"]
}, {
"name": "measureText",
"args": ["dataset2"]
}, {
"name": "measureText",
"args": ["dataset3"]
}, {
"name": "measureText",
"args": ["dataset1"]
}, {
"name": "measureText",
"args": ["dataset2"]
}, {
"name": "measureText",
"args": ["dataset3"]
}, {
"name": "setLineWidth",
"args": [0.5]
}, {
"name": "setStrokeStyle",
"args": ["#666"]
}, {
"name": "setFillStyle",
"args": ["#666"]
}, {
"name": "measureText",
"args": ["dataset1"]
}, {
"name": "save",
"args": []
}, {
"name": "setFillStyle",
"args": ["#f31"]
}, {
"name": "setLineCap",
"args": ["butt"]
}, {
"name": "setLineDashOffset",
"args": [5.5]
}, {
"name": "setLineJoin",
"args": ["miter"]
}, {
"name": "setLineWidth",
"args": [3]
}, {
"name": "setStrokeStyle",
"args": ["rgba(0,0,0,0.1)"]
}, {
"name": "setLineDash",
"args": [
[2, 2]
]
}, {
"name": "strokeRect",
"args": [114, 110, 40, 12]
}, {
"name": "fillRect",
"args": [114, 110, 40, 12]
}, {
"name": "restore",
"args": []
}, {
"name": "fillText",
"args": ["dataset1", 160, 110]
}, {
"name": "measureText",
"args": ["dataset2"]
}, {
"name": "save",
"args": []
}, {
"name": "setFillStyle",
"args": ["rgba(0,0,0,0.1)"]
}, {
"name": "setLineCap",
"args": ["butt"]
}, {
"name": "setLineDashOffset",
"args": [0]
}, {
"name": "setLineJoin",
"args": ["miter"]
}, {
"name": "setLineWidth",
"args": [3]
}, {
"name": "setStrokeStyle",
"args": ["rgba(0,0,0,0.1)"]
}, {
"name": "setLineDash",
"args": [
[]
]
}, {
"name": "strokeRect",
"args": [250, 110, 40, 12]
}, {
"name": "fillRect",
"args": [250, 110, 40, 12]
}, {
"name": "restore",
"args": []
}, {
"name": "fillText",
"args": ["dataset2", 296, 110]
}, {
"name": "beginPath",
"args": []
}, {
"name": "setLineWidth",
"args": [2]
}, {
"name": "moveTo",
"args": [296, 116]
}, {
"name": "lineTo",
"args": [376, 116]
}, {
"name": "stroke",
"args": []
}, {
"name": "measureText",
"args": ["dataset3"]
}, {
"name": "save",
"args": []
}, {
"name": "setFillStyle",
"args": ["rgba(0,0,0,0.1)"]
}, {
"name": "setLineCap",
"args": ["butt"]
}, {
"name": "setLineDashOffset",
"args": [0]
}, {
"name": "setLineJoin",
"args": ["miter"]
}, {
"name": "setLineWidth",
"args": [10]
}, {
"name": "setStrokeStyle",
"args": ["green"]
}, {
"name": "setLineDash",
"args": [
[]
]
}, {
"name": "strokeRect",
"args": [182, 132, 40, 12]
}, {
"name": "fillRect",
"args": [182, 132, 40, 12]
}, {
"name": "restore",
"args": []
}, {
"name": "fillText",
"args": ["dataset3", 228, 132]
}]);*/
});
describe('config update', function() {
it ('should update the options', function() {
var chart = acquireChart({
type: 'line',
data: {
labels: ['A', 'B', 'C', 'D'],
datasets: [{
data: [10, 20, 30, 100]
}]
},
options: {
legend: {
display: true
}
}
});
expect(chart.legend.options.display).toBe(true);
chart.options.legend.display = false;
chart.update();
expect(chart.legend.options.display).toBe(false);
});
it ('should update the associated layout item', function() {
var chart = acquireChart({
type: 'line',
data: {},
options: {
legend: {
fullWidth: true,
position: 'top',
weight: 150
}
}
});
expect(chart.legend.fullWidth).toBe(true);
expect(chart.legend.position).toBe('top');
expect(chart.legend.weight).toBe(150);
chart.options.legend.fullWidth = false;
chart.options.legend.position = 'left';
chart.options.legend.weight = 42;
chart.update();
expect(chart.legend.fullWidth).toBe(false);
expect(chart.legend.position).toBe('left');
expect(chart.legend.weight).toBe(42);
});
it ('should remove the legend if the new options are false', function() {
var chart = acquireChart({
type: 'line',
data: {
labels: ['A', 'B', 'C', 'D'],
datasets: [{
data: [10, 20, 30, 100]
}]
}
});
expect(chart.legend).not.toBe(undefined);
chart.options.legend = false;
chart.update();
expect(chart.legend).toBe(undefined);
});
it ('should create the legend if the legend options are changed to exist', function() {
var chart = acquireChart({
type: 'line',
data: {
labels: ['A', 'B', 'C', 'D'],
datasets: [{
data: [10, 20, 30, 100]
}]
},
options: {
legend: false
}
});
expect(chart.legend).toBe(undefined);
chart.options.legend = {};
chart.update();
expect(chart.legend).not.toBe(undefined);
expect(chart.legend.options).toEqual(jasmine.objectContaining(Chart.defaults.global.legend));
});
});
});
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:: Command execute :: | |
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