Quite good looking graph derived from d3.js http://c3js.org
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describe('c3 api grid', function () {
'use strict';
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var chart, args;
beforeEach(function (done) {
chart = window.initChart(chart, args, done);
});
describe('ygrid.add and ygrid.remove', function () {
beforeAll(function () {
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args = {
data: {
columns: [
['data1', 30, 200, 100, 400, 150, 250]
]
}
};
});
it('updates y grids', function (done) {
var main = chart.internal.main,
expectedGrids = [
{
value: 100,
text: 'Pressure Low'
},
{
value: 200,
text: 'Pressure High'
}
],
grids;
// Call ygrids.add
chart.ygrids.add(expectedGrids);
setTimeout(function () {
grids = main.selectAll('.c3-ygrid-line');
expect(grids.size()).toBe(expectedGrids.length);
grids.each(function (d, i) {
var y = +d3.select(this).select('line').attr('y1'),
text = d3.select(this).select('text').text(),
expectedY = Math.round(chart.internal.y(expectedGrids[i].value)),
expectedText = expectedGrids[i].text;
expect(y).toBe(expectedY);
expect(text).toBe(expectedText);
});
// Call ygrids.remove
chart.ygrids.remove(expectedGrids);
setTimeout(function () {
grids = main.selectAll('.c3-ygrid-line');
expect(grids.size()).toBe(0);
}, 500);
}, 500);
setTimeout(function () {
done();
}, 1200);
});
it('updates x ygrids even if zoomed', function (done) {
var main = chart.internal.main,
expectedGrids = [
{
value: 0,
text: 'Pressure Low'
},
{
value: 1,
text: 'Pressure High'
}
],
grids, domain;
chart.zoom([0, 2]);
setTimeout(function () {
// Call xgrids
chart.xgrids(expectedGrids);
setTimeout(function () {
grids = main.selectAll('.c3-xgrid-line');
expect(grids.size()).toBe(expectedGrids.length);
grids.each(function (d, i) {
var x = +d3.select(this).select('line').attr('x1'),
text = d3.select(this).select('text').text(),
expectedX = Math.round(chart.internal.x(expectedGrids[i].value)),
expectedText = expectedGrids[i].text;
expect(x).toBe(expectedX);
expect(text).toBe(expectedText);
});
// check if it was not rescaled
domain = chart.internal.y.domain();
expect(domain[0]).toBeLessThan(0);
expect(domain[1]).toBeGreaterThan(400);
// Call xgrids.remove
chart.xgrids.remove(expectedGrids);
setTimeout(function () {
grids = main.selectAll('.c3-xgrid-line');
expect(grids.size()).toBe(0);
}, 500); // for xgrids.remove()
}, 500); // for xgrids()
}, 500); // for zoom
setTimeout(function () {
done();
}, 1700);
});
});
});