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https://github.com/chartjs/Chart.js.git
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c8bdca62e8
* Move all helpers into src/helpers * Move curve helpers to their own file * DOM helpers moved to their own file * Update migration docs * Remove migration docs on new functions
260 lines
7.7 KiB
JavaScript
260 lines
7.7 KiB
JavaScript
describe('DOM helpers tests', function() {
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let helpers;
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beforeAll(function() {
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helpers = window.Chart.helpers.dom;
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});
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it ('should get the maximum width and height for a node', function() {
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// Create div with fixed size as a test bed
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var div = document.createElement('div');
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div.style.width = '200px';
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div.style.height = '300px';
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document.body.appendChild(div);
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// Create the div we want to get the max size for
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var innerDiv = document.createElement('div');
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div.appendChild(innerDiv);
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expect(helpers.getMaximumWidth(innerDiv)).toBe(200);
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expect(helpers.getMaximumHeight(innerDiv)).toBe(300);
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document.body.removeChild(div);
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});
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it ('should get the maximum width and height for a node in a ShadowRoot', function() {
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// Create div with fixed size as a test bed
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var div = document.createElement('div');
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div.style.width = '200px';
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div.style.height = '300px';
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document.body.appendChild(div);
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if (!div.attachShadow) {
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// Shadow DOM is not natively supported
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return;
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}
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var shadow = div.attachShadow({mode: 'closed'});
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// Create the div we want to get the max size for
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var innerDiv = document.createElement('div');
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shadow.appendChild(innerDiv);
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expect(helpers.getMaximumWidth(innerDiv)).toBe(200);
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expect(helpers.getMaximumHeight(innerDiv)).toBe(300);
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document.body.removeChild(div);
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});
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it ('should get the maximum width of a node that has a max-width style', function() {
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// Create div with fixed size as a test bed
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var div = document.createElement('div');
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div.style.width = '200px';
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div.style.height = '300px';
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document.body.appendChild(div);
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// Create the div we want to get the max size for and set a max-width style
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var innerDiv = document.createElement('div');
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innerDiv.style.maxWidth = '150px';
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div.appendChild(innerDiv);
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expect(helpers.getMaximumWidth(innerDiv)).toBe(150);
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document.body.removeChild(div);
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});
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it ('should get the maximum height of a node that has a max-height style', function() {
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// Create div with fixed size as a test bed
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var div = document.createElement('div');
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div.style.width = '200px';
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div.style.height = '300px';
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document.body.appendChild(div);
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// Create the div we want to get the max size for and set a max-height style
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var innerDiv = document.createElement('div');
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innerDiv.style.maxHeight = '150px';
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div.appendChild(innerDiv);
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expect(helpers.getMaximumHeight(innerDiv)).toBe(150);
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document.body.removeChild(div);
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});
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it ('should get the maximum width of a node when the parent has a max-width style', function() {
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// Create div with fixed size as a test bed
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var div = document.createElement('div');
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div.style.width = '200px';
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div.style.height = '300px';
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document.body.appendChild(div);
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// Create an inner wrapper around our div we want to size and give that a max-width style
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var parentDiv = document.createElement('div');
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parentDiv.style.maxWidth = '150px';
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div.appendChild(parentDiv);
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// Create the div we want to get the max size for
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var innerDiv = document.createElement('div');
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parentDiv.appendChild(innerDiv);
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expect(helpers.getMaximumWidth(innerDiv)).toBe(150);
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document.body.removeChild(div);
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});
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it ('should get the maximum height of a node when the parent has a max-height style', function() {
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// Create div with fixed size as a test bed
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var div = document.createElement('div');
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div.style.width = '200px';
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div.style.height = '300px';
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document.body.appendChild(div);
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// Create an inner wrapper around our div we want to size and give that a max-height style
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var parentDiv = document.createElement('div');
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parentDiv.style.maxHeight = '150px';
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div.appendChild(parentDiv);
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// Create the div we want to get the max size for
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var innerDiv = document.createElement('div');
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innerDiv.style.height = '300px'; // make it large
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parentDiv.appendChild(innerDiv);
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expect(helpers.getMaximumHeight(innerDiv)).toBe(150);
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document.body.removeChild(div);
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});
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it ('should get the maximum width of a node that has a percentage max-width style', function() {
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// Create div with fixed size as a test bed
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var div = document.createElement('div');
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div.style.width = '200px';
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div.style.height = '300px';
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document.body.appendChild(div);
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// Create the div we want to get the max size for and set a max-width style
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var innerDiv = document.createElement('div');
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innerDiv.style.maxWidth = '50%';
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div.appendChild(innerDiv);
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expect(helpers.getMaximumWidth(innerDiv)).toBe(100);
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document.body.removeChild(div);
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});
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it ('should get the maximum height of a node that has a percentage max-height style', function() {
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// Create div with fixed size as a test bed
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var div = document.createElement('div');
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div.style.width = '200px';
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div.style.height = '300px';
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document.body.appendChild(div);
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// Create the div we want to get the max size for and set a max-height style
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var innerDiv = document.createElement('div');
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innerDiv.style.maxHeight = '50%';
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div.appendChild(innerDiv);
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expect(helpers.getMaximumHeight(innerDiv)).toBe(150);
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document.body.removeChild(div);
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});
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it ('should get the maximum width of a node when the parent has a percentage max-width style', function() {
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// Create div with fixed size as a test bed
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var div = document.createElement('div');
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div.style.width = '200px';
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div.style.height = '300px';
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document.body.appendChild(div);
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// Create an inner wrapper around our div we want to size and give that a max-width style
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var parentDiv = document.createElement('div');
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parentDiv.style.maxWidth = '50%';
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div.appendChild(parentDiv);
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// Create the div we want to get the max size for
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var innerDiv = document.createElement('div');
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parentDiv.appendChild(innerDiv);
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expect(helpers.getMaximumWidth(innerDiv)).toBe(100);
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document.body.removeChild(div);
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});
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it ('should get the maximum height of a node when the parent has a percentage max-height style', function() {
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// Create div with fixed size as a test bed
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var div = document.createElement('div');
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div.style.width = '200px';
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div.style.height = '300px';
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document.body.appendChild(div);
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// Create an inner wrapper around our div we want to size and give that a max-height style
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var parentDiv = document.createElement('div');
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parentDiv.style.maxHeight = '50%';
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div.appendChild(parentDiv);
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var innerDiv = document.createElement('div');
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innerDiv.style.height = '300px'; // make it large
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parentDiv.appendChild(innerDiv);
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expect(helpers.getMaximumHeight(innerDiv)).toBe(150);
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document.body.removeChild(div);
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});
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it ('Should get padding of parent as number (pixels) when defined as percent (returns incorrectly in IE11)', function() {
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// Create div with fixed size as a test bed
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var div = document.createElement('div');
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div.style.width = '300px';
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div.style.height = '300px';
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document.body.appendChild(div);
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// Inner DIV to have 5% padding of parent
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var innerDiv = document.createElement('div');
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div.appendChild(innerDiv);
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var canvas = document.createElement('canvas');
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innerDiv.appendChild(canvas);
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// No padding
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expect(helpers.getMaximumWidth(canvas)).toBe(300);
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// test with percentage
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innerDiv.style.padding = '5%';
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expect(helpers.getMaximumWidth(canvas)).toBe(270);
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// test with pixels
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innerDiv.style.padding = '10px';
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expect(helpers.getMaximumWidth(canvas)).toBe(280);
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document.body.removeChild(div);
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});
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it ('should leave styled height and width on canvas if explicitly set', function() {
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var chart = window.acquireChart({}, {
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canvas: {
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height: 200,
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width: 200,
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style: 'height: 400px; width: 400px;'
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}
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});
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helpers.retinaScale(chart, true);
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var canvas = chart.canvas;
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expect(canvas.style.height).toBe('400px');
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expect(canvas.style.width).toBe('400px');
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});
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});
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