Quite good looking graph derived from d3.js http://c3js.org
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describe('c3 chart grid', function () {
'use strict';
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var chart, args;
beforeEach(function (done) {
chart = window.initChart(chart, args, done);
});
describe('y grid show', function () {
beforeAll(function () {
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args = {
data: {
columns: [
['data1', 30, 200, 100, 400, 150, 250]
]
},
axis: {
y: {
tick: {
}
}
},
grid: {
y: {
show: false
}
}
};
});
it('should not show y grids', function () {
expect(chart.internal.main.select('.c3-ygrids').size()).toBe(0);
});
describe('with y grids', function () {
beforeAll(function(){
args.grid.y.show = true;
});
it('should show y grids', function () {
var ygrids = chart.internal.main.select('.c3-ygrids');
expect(ygrids.size()).toBe(1);
expect(ygrids.selectAll('.c3-ygrid').size()).toBe(9);
});
});
describe('with only 3 y grids', function () {
beforeAll(function(){
args.grid.y.ticks = 3;
});
it('should show only 3 y grids', function () {
var ygrids = chart.internal.main.select('.c3-ygrids');
expect(ygrids.size()).toBe(1);
expect(ygrids.selectAll('.c3-ygrid').size()).toBe(3);
});
});
describe('with y grids depending on y axis ticks', function () {
beforeAll(function(){
args.axis.y.tick.count = 5;
});
it('should show grids depending on y axis ticks', function () {
var ygrids = chart.internal.main.select('.c3-ygrids'),
expectedYs = [];
ygrids.selectAll('.c3-ygrid').each(function (d, i) {
expectedYs[i] = +d3.select(this).attr('y1');
});
expect(ygrids.size()).toBe(1);
expect(ygrids.selectAll('.c3-ygrid').size()).toBe(5);
chart.internal.main.select('.c3-axis-y').selectAll('.tick').each(function (d, i) {
var t = d3.transform(d3.select(this).attr('transform'));
expect(t.translate[1]).toBe(expectedYs[i]);
});
});
});
});
describe('y grid lines', function () {
describe('position', function () {
beforeAll(function () {
args = {
data: {
columns: [
['data1', 10, 200, 100, 400, 150, 250]
]
},
grid: {
y: {
lines: [
{value: 30, text: 'Label 30', position: 'start'},
{value: 145, text: 'Label 145', position: 'middle'},
{value: 225, text: 'Label 225'}
]
}
}
};
});
it('should show 3 grid lines', function () {
expect(chart.internal.main.selectAll('.c3-ygrid-lines .c3-ygrid-line').size()).toBe(3);
});
it('should locate grid lines properly', function () {
var lines = chart.internal.main.selectAll('.c3-ygrid-lines .c3-ygrid-line'),
expectedY1s = [373, 268, 196];
lines.each(function (d, i) {
var y1 = d3.select(this).select('line').attr('y1');
expect(y1).toBeCloseTo(expectedY1s[i], -2);
});
});
it('should locate grid texts properly', function () {
var lines = chart.internal.main.selectAll('.c3-ygrid-lines .c3-ygrid-line'),
expectedPositions = ['start', 'middle', 'end'],
expectedDxs = [4, 0, -4];
lines.each(function (d, i) {
var text = d3.select(this).select('text'),
textAnchor = text.attr('text-anchor'),
dx = text.attr('dx');
expect(textAnchor).toBe(expectedPositions[i]);
expect(+dx).toBe(expectedDxs[i]);
});
});
describe('three gridlines', function () {
beforeAll(function(){
args = {
data: {
columns: [
['data1', 10, 200, 100, 400, 150, 250]
]
},
axis: {
rotated: true
},
grid: {
y: {
lines: [
{value: 30, text: 'Label 30', position: 'start'},
{value: 145, text: 'Label 145', position: 'middle'},
{value: 225, text: 'Label 225'}
]
}
}
};
});
it('should show 3 grid lines', function () {
expect(chart.internal.main.selectAll('.c3-ygrid-lines .c3-ygrid-line').size()).toBe(3);
});
it('should locate grid lines properly', function () {
var lines = chart.internal.main.selectAll('.c3-ygrid-lines .c3-ygrid-line'),
expectedX1s = [75, 220, 321];
lines.each(function (d, i) {
var x1 = d3.select(this).select('line').attr('x1');
expect(x1).toBeCloseTo(expectedX1s[i], -2);
});
});
it('should locate grid texts properly', function () {
var lines = chart.internal.main.selectAll('.c3-ygrid-lines .c3-ygrid-line'),
expectedPositions = ['start', 'middle', 'end'],
expectedDxs = [4, 0, -4];
lines.each(function (d, i) {
var text = d3.select(this).select('text'),
textAnchor = text.attr('text-anchor'),
dx = text.attr('dx');
expect(textAnchor).toBe(expectedPositions[i]);
expect(+dx).toBe(expectedDxs[i]);
});
});
});
});
});
describe('x grid lines', function () {
describe('position', function () {
beforeAll(function () { // 'should have correct height',
args = {
data: {
columns: [
['data1', 30, 200, 100, 400],
]
},
grid: {
x: {
lines: [
{value: 1, text: 'Label 1', position: 'start'},
{value: 2, text: 'Label 2', position: 'middle'},
{value: 3, text: 'Label 3'},
]
}
},
};
});
it('should show 3 grid lines', function () {
expect(chart.internal.main.selectAll('.c3-xgrid-lines .c3-xgrid-line').size()).toBe(3);
});
it('should locate grid lines properly', function () {
var lines = chart.internal.main.selectAll('.c3-xgrid-lines .c3-xgrid-line'),
expectedX1s = [202, 397, 593];
lines.each(function (d, i) {
var x1 = d3.select(this).select('line').attr('x1');
expect(x1).toBeCloseTo(expectedX1s[i], -2);
});
});
it('should locate grid texts properly', function () {
var lines = chart.internal.main.selectAll('.c3-xgrid-lines .c3-xgrid-line'),
expectedPositions = ['start', 'middle', 'end'],
expectedDxs = [4, 0, -4];
lines.each(function (d, i) {
var text = d3.select(this).select('text'),
textAnchor = text.attr('text-anchor'),
dx = text.attr('dx');
expect(textAnchor).toBe(expectedPositions[i]);
expect(+dx).toBe(expectedDxs[i]);
});
});
describe('three grid lines', function () {
beforeAll(function(){
args = {
data: {
columns: [
['data1', 30, 200, 100, 400],
]
},
axis: {
rotated: true
},
grid: {
x: {
lines: [
{value: 1, text: 'Label 1', position: 'start'},
{value: 2, text: 'Label 2', position: 'middle'},
{value: 3, text: 'Label 3'},
]
}
},
};
});
it('should show 3 grid lines', function () {
expect(chart.internal.main.selectAll('.c3-xgrid-lines .c3-xgrid-line').size()).toBe(3);
});
it('should locate grid lines properly', function () {
var lines = chart.internal.main.selectAll('.c3-xgrid-lines .c3-xgrid-line'),
expectedY1s = [144, 283, 421];
lines.each(function (d, i) {
var y1 = d3.select(this).select('line').attr('y1');
expect(y1).toBeCloseTo(expectedY1s[i], -2);
});
});
it('should locate grid texts properly', function () {
var lines = chart.internal.main.selectAll('.c3-xgrid-lines .c3-xgrid-line'),
expectedPositions = ['start', 'middle', 'end'],
expectedDxs = [4, 0, -4];
lines.each(function (d, i) {
var text = d3.select(this).select('text'),
textAnchor = text.attr('text-anchor'),
dx = text.attr('dx');
expect(textAnchor).toBe(expectedPositions[i]);
expect(+dx).toBe(expectedDxs[i]);
});
});
});
});
describe('with padding.top', function () {
describe('should have correct height', function () {
beforeAll(function(){
args = {
data: {
columns: [
['data1', 30, 200, 100, 400],
]
},
grid: {
x: {
lines: [
{value: 3, text: 'Label 3'}
]
}
},
padding: {
top: 50
}
};
});
it('should show x grid lines', function () {
var lines = chart.internal.main.select('.c3-xgrid-lines .c3-xgrid-line'),
expectedX1 = 593,
expectedText = ['Label 3'];
lines.each(function (id, i) {
var line = d3.select(this),
l = line.select('line'),
t = line.select('text');
expect(+l.attr('x1')).toBeCloseTo(expectedX1, -2);
expect(t.text()).toBe(expectedText[i]);
});
});
});
});
describe('on category axis', function () {
beforeAll(function () {
args = {
data: {
x: 'x',
columns: [
['x', 'a', 'b', 'c', 'd'],
['data1', 30, 200, 100, 400],
]
},
axis: {
x: {
type: 'category'
}
},
grid: {
x: {
lines: [
{value: 3, text: 'Label 3'},
{value: 'a', text: 'Label a'}
]
}
}
};
});
it('should show x grid lines', function () {
var lines = chart.internal.main.selectAll('.c3-xgrid-lines .c3-xgrid-line'),
expectedX1 = [515, 74],
expectedText = ['Label 3', 'Label a'];
lines.each(function (id, i) {
var line = d3.select(this),
l = line.select('line'),
t = line.select('text');
expect(+l.attr('x1')).toBeCloseTo(expectedX1[i], -2);
expect(t.text()).toBe(expectedText[i]);
});
});
});
});
});