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accordionpanel.spec.ts
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accordionpanel.spec.ts
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// Copyright (c) Jupyter Development Team.
// Distributed under the terms of the Modified BSD License.
import { every } from '@lumino/algorithm';
import { MessageLoop } from '@lumino/messaging';
import {
AccordionLayout,
AccordionPanel,
Title,
Widget
} from '@lumino/widgets';
import { expect } from 'chai';
import { simulate } from 'simulate-event';
const renderer: AccordionPanel.IRenderer = {
titleClassName: '.lm-AccordionTitle',
createHandle: () => document.createElement('div'),
createSectionTitle: (title: Title<Widget>) => document.createElement('h3')
};
class LogAccordionPanel extends AccordionPanel {
events: string[] = [];
handleEvent(event: Event): void {
super.handleEvent(event);
this.events.push(event.type);
}
}
describe('@lumino/widgets', () => {
describe('AccordionPanel', () => {
describe('#constructor()', () => {
it('should accept no arguments', () => {
let panel = new AccordionPanel();
expect(panel).to.be.an.instanceof(AccordionPanel);
});
it('should accept options', () => {
let panel = new AccordionPanel({
orientation: 'horizontal',
spacing: 5,
titleSpace: 42,
renderer
});
expect(panel.orientation).to.equal('horizontal');
expect(panel.spacing).to.equal(5);
expect(panel.titleSpace).to.equal(42);
expect(panel.renderer).to.equal(renderer);
});
it('should accept a layout option', () => {
let layout = new AccordionLayout({ renderer });
let panel = new AccordionPanel({ layout });
expect(panel.layout).to.equal(layout);
});
it('should ignore other options if a layout is given', () => {
let ignored = Object.create(renderer);
let layout = new AccordionLayout({ renderer });
let panel = new AccordionPanel({
layout,
orientation: 'horizontal',
spacing: 5,
titleSpace: 42,
renderer: ignored
});
expect(panel.layout).to.equal(layout);
expect(panel.orientation).to.equal('vertical');
expect(panel.spacing).to.equal(4);
expect(panel.titleSpace).to.equal(22);
expect(panel.renderer).to.equal(renderer);
});
it('should add the `lm-AccordionPanel` class', () => {
let panel = new AccordionPanel();
expect(panel.hasClass('lm-AccordionPanel')).to.equal(true);
});
});
describe('#dispose()', () => {
it('should dispose of the resources held by the panel', () => {
let panel = new LogAccordionPanel();
let layout = panel.layout as AccordionLayout;
let widgets = [new Widget(), new Widget(), new Widget()];
widgets.forEach(w => {
panel.addWidget(w);
});
Widget.attach(panel, document.body);
panel.dispose();
expect(every(widgets, w => w.isDisposed));
expect(layout.titles).to.have.length(0);
});
});
describe('#titleSpace', () => {
it('should default to `22`', () => {
let panel = new AccordionPanel();
expect(panel.titleSpace).to.equal(22);
});
it('should set the titleSpace for the panel', () => {
let panel = new AccordionPanel();
panel.titleSpace = 10;
expect(panel.titleSpace).to.equal(10);
});
});
describe('#renderer', () => {
it('should get the renderer for the panel', () => {
let panel = new AccordionPanel({ renderer });
expect(panel.renderer).to.equal(renderer);
});
});
describe('#titles', () => {
it('should get the read-only sequence of the accordion titles in the panel', () => {
let panel = new AccordionPanel();
let widgets = [new Widget(), new Widget(), new Widget()];
widgets.forEach(w => {
panel.addWidget(w);
});
expect(panel.titles.length).to.equal(widgets.length);
});
it('should update the title element', () => {
const text = 'Something';
let panel = new AccordionPanel();
let widget = new Widget();
panel.addWidget(widget);
widget.title.label = text;
const el = panel.titles[0].querySelector(
'.lm-AccordionPanel-titleLabel'
)!;
expect(el.textContent).to.equal(text);
});
});
describe('#collapse()', () => {
let panel: AccordionPanel;
let layout: AccordionLayout;
beforeEach(() => {
panel = new AccordionPanel();
layout = panel.layout as AccordionLayout;
let widgets = [new Widget(), new Widget(), new Widget()];
widgets.forEach(w => {
panel.addWidget(w);
});
panel.setRelativeSizes([10, 10, 10, 20]);
Widget.attach(panel, document.body);
MessageLoop.flush();
});
afterEach(() => {
panel.dispose();
});
it('should collapse an expanded widget', () => {
panel.collapse(1);
expect(layout.titles[1].getAttribute('aria-expanded')).to.equal(
'false'
);
expect(layout.titles[1].classList.contains('lm-mod-expanded')).to.be
.false;
expect(layout.widgets[1].isHidden).to.be.true;
});
});
describe('#expand()', () => {
let panel: AccordionPanel;
let layout: AccordionLayout;
beforeEach(() => {
panel = new AccordionPanel();
layout = panel.layout as AccordionLayout;
let widgets = [new Widget(), new Widget(), new Widget()];
widgets.forEach(w => {
panel.addWidget(w);
});
panel.setRelativeSizes([10, 10, 10, 20]);
Widget.attach(panel, document.body);
MessageLoop.flush();
});
afterEach(() => {
panel.dispose();
});
it('should expand a collapsed widget', () => {
panel.collapse(1);
panel.expand(1);
expect(layout.titles[0].getAttribute('aria-expanded')).to.equal('true');
expect(layout.titles[0].classList.contains('lm-mod-expanded')).to.be
.true;
expect(layout.widgets[0].isHidden).to.be.false;
});
});
describe('#handleEvent()', () => {
let panel: LogAccordionPanel;
let layout: AccordionLayout;
beforeEach(() => {
panel = new LogAccordionPanel();
layout = panel.layout as AccordionLayout;
let widgets = [new Widget(), new Widget(), new Widget()];
widgets.forEach(w => {
panel.addWidget(w);
});
panel.setRelativeSizes([10, 10, 10, 20]);
Widget.attach(panel, document.body);
MessageLoop.flush();
});
afterEach(() => {
panel.dispose();
});
context('click', () => {
it('should collapse an expanded widget', () => {
simulate(layout.titles[0], 'click');
expect(panel.events).to.contain('click');
expect(layout.titles[0].getAttribute('aria-expanded')).to.equal(
'false'
);
expect(layout.titles[0].classList.contains('lm-mod-expanded')).to.be
.false;
expect(layout.widgets[0].isHidden).to.be.true;
});
it('should expand a collapsed widget', () => {
// Collapse
simulate(layout.titles[0], 'click');
simulate(layout.titles[0], 'click');
expect(layout.titles[0].getAttribute('aria-expanded')).to.equal(
'true'
);
expect(layout.titles[0].classList.contains('lm-mod-expanded')).to.be
.true;
expect(layout.widgets[0].isHidden).to.be.false;
});
});
context('keydown', () => {
it('should redirect to toggle expansion state if Space is pressed', () => {
simulate(layout.titles[0], 'keydown', { key: 'Space' });
expect(panel.events).to.contain('keydown');
expect(layout.titles[0].getAttribute('aria-expanded')).to.equal(
'false'
);
expect(layout.titles[0].classList.contains('lm-mod-expanded')).to.be
.false;
expect(layout.widgets[0].isHidden).to.be.true;
simulate(layout.titles[0], 'keydown', { key: 'Space' });
expect(panel.events).to.contain('keydown');
expect(layout.titles[0].getAttribute('aria-expanded')).to.equal(
'true'
);
expect(layout.titles[0].classList.contains('lm-mod-expanded')).to.be
.true;
expect(layout.widgets[0].isHidden).to.be.false;
});
it('should redirect to toggle expansion state if Enter is pressed', () => {
simulate(layout.titles[0], 'keydown', { key: 'Enter' });
expect(panel.events).to.contain('keydown');
expect(layout.titles[0].getAttribute('aria-expanded')).to.equal(
'false'
);
expect(layout.titles[0].classList.contains('lm-mod-expanded')).to.be
.false;
expect(layout.widgets[0].isHidden).to.be.true;
simulate(layout.titles[0], 'keydown', { key: 'Enter' });
expect(panel.events).to.contain('keydown');
expect(layout.titles[0].getAttribute('aria-expanded')).to.equal(
'true'
);
expect(layout.titles[0].classList.contains('lm-mod-expanded')).to.be
.true;
expect(layout.widgets[0].isHidden).to.be.false;
});
it('should focus on the next widget if Arrow Down is pressed', () => {
layout.titles[1].focus();
simulate(layout.titles[1], 'keydown', { key: 'ArrowDown' });
expect(panel.events).to.contain('keydown');
expect(document.activeElement).to.be.equal(layout.titles[2]);
});
it('should focus on the previous widget if Arrow Up is pressed', () => {
layout.titles[1].focus();
simulate(layout.titles[1], 'keydown', { key: 'ArrowUp' });
expect(panel.events).to.contain('keydown');
expect(document.activeElement).to.be.equal(layout.titles[0]);
});
it('should focus on the first widget if Home is pressed', () => {
layout.titles[1].focus();
simulate(layout.titles[1], 'keydown', { key: 'Home' });
expect(panel.events).to.contain('keydown');
expect(document.activeElement).to.be.equal(layout.titles[0]);
});
it('should focus on the last widget if End is pressed', () => {
layout.titles[1].focus();
simulate(layout.titles[1], 'keydown', { key: 'End' });
expect(panel.events).to.contain('keydown');
expect(document.activeElement).to.be.equal(layout.titles[2]);
});
});
});
describe('#onBeforeAttach()', () => {
it('should attach a click listener to the node', () => {
let panel = new LogAccordionPanel();
Widget.attach(panel, document.body);
simulate(panel.node, 'click');
expect(panel.events).to.contain('click');
panel.dispose();
});
it('should attach a keydown listener to the node', () => {
let panel = new LogAccordionPanel();
Widget.attach(panel, document.body);
simulate(panel.node, 'keydown');
expect(panel.events).to.contain('keydown');
panel.dispose();
});
});
describe('#onAfterDetach()', () => {
it('should remove click listener', () => {
let panel = new LogAccordionPanel();
Widget.attach(panel, document.body);
simulate(panel.node, 'click');
expect(panel.events).to.contain('click');
Widget.detach(panel);
panel.events = [];
simulate(panel.node, 'click');
expect(panel.events).to.not.contain('click');
});
it('should remove keydown listener', () => {
let panel = new LogAccordionPanel();
Widget.attach(panel, document.body);
simulate(panel.node, 'keydown');
expect(panel.events).to.contain('keydown');
Widget.detach(panel);
panel.events = [];
simulate(panel.node, 'keydown');
expect(panel.events).to.not.contain('keydown');
});
});
describe('.Renderer()', () => {
describe('.defaultRenderer', () => {
it('should be an instance of `Renderer`', () => {
expect(AccordionPanel.defaultRenderer).to.be.an.instanceof(
AccordionPanel.Renderer
);
});
});
describe('#constructor', () => {
it('should create a section title', () => {
const renderer = new AccordionPanel.Renderer();
expect(
renderer.createSectionTitle(
new Title<Widget>({ owner: new Widget() })
)
).to.be.instanceOf(HTMLElement);
});
it('should have a section title selector', () => {
const renderer = new AccordionPanel.Renderer();
expect(renderer.titleClassName).to.be.equal(
'lm-AccordionPanel-title'
);
});
});
});
describe('#_computeWidgetSize()', () => {
const DELTA = 1e-6;
let panel: AccordionPanel;
beforeEach(() => {
panel = new AccordionPanel({ renderer, titleSpace: 0, spacing: 0 });
panel.node.style.height = '500px';
Widget.attach(panel, document.body);
});
it('should not compute the size of panel with only one widget', () => {
panel.addWidget(new Widget());
MessageLoop.flush();
const value = panel['_computeWidgetSize'](0);
expect(value).to.be.equal(undefined);
});
it('should compute the size of panel with two opened widgets', () => {
const widgets = [new Widget(), new Widget()];
widgets.forEach(w => panel.addWidget(w));
MessageLoop.flush();
const value0 = panel['_computeWidgetSize'](0);
expect(value0.length).to.be.equal(2);
expect(value0[0]).to.be.closeTo(0, DELTA);
expect(value0[1]).to.be.closeTo(1, DELTA);
const value1 = panel['_computeWidgetSize'](1);
expect(value1[0]).to.be.closeTo(1, DELTA);
expect(value1[1]).to.be.closeTo(0, DELTA);
});
it('should compute the size of panel with three widgets', () => {
const widgets = [new Widget(), new Widget(), new Widget()];
widgets.forEach(w => panel.addWidget(w));
MessageLoop.flush();
const value = panel['_computeWidgetSize'](0);
expect(value.length).to.be.equal(3);
expect(value[0]).to.be.closeTo(0, DELTA);
expect(value[1]).to.be.closeTo(0.333333, DELTA);
expect(value[2]).to.be.closeTo(0.666666, DELTA);
});
});
});
});