/
Range.test.ts
139 lines (104 loc) · 4.29 KB
/
Range.test.ts
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import Window from '../../src/window/Window';
import IWindow from '../../src/window/IWindow';
import IDocument from '../../src/nodes/document/IDocument';
import Range from '../../src/range/Range';
describe('Range', () => {
let window: IWindow;
let document: IDocument;
let range: Range;
beforeEach(() => {
window = new Window();
document = window.document;
Range._ownerDocument = document;
range = new Range();
});
describe('get collapsed()', () => {
it('Returns true when start and end container are the same and has the same offset.', () => {
const container = document.createElement('div');
container.innerHTML = `Hello <u>world</u>!`;
range.setStart(container, 0);
range.setEnd(container, 0);
expect(range.collapsed).toBe(true);
});
it('Returns false when start and end container are the same, but does not have the same offset.', () => {
const container = document.createElement('div');
container.innerHTML = `Hello <u>world</u>!`;
range.setStart(container, 0);
range.setEnd(container, 1);
expect(range.collapsed).toBe(false);
});
it('Returns false when start and end container are not the same, but have the same offset.', () => {
const container = document.createElement('div');
container.innerHTML = `Hello <u>world</u>!`;
range.setStart(container, 0);
range.setEnd(container.children[0], 0);
expect(range.collapsed).toBe(false);
});
});
describe('get commonAncestorContainer()', () => {
it('Returns ancestor parent container when end container is set to a child of start container.', () => {
const container = document.createElement('div');
range.setStart(container, 0);
range.setEnd(container.children[0], 0);
expect(range.commonAncestorContainer === container).toBe(true);
});
it('Returns ancestor parent container when start and end container are the same.', () => {
const container = document.createElement('div');
range.setStart(container, 0);
range.setEnd(container, 0);
expect(range.commonAncestorContainer === container).toBe(true);
});
it('Returns end container when start and end container does not have a common ancestor.', () => {
const container = document.createElement('div');
const container2 = document.createElement('div');
range.setStart(container, 0);
range.setEnd(container2, 0);
expect(range.commonAncestorContainer === container2).toBe(true);
});
it('Returns common parent container.', () => {
const container = document.createElement('div');
const span = document.createElement('span');
const span2 = document.createElement('span');
container.appendChild(span);
container.appendChild(span2);
range.setStart(span, 0);
range.setEnd(span2, 0);
expect(range.commonAncestorContainer === container).toBe(true);
});
it('Returns body when it is the common parent container.', () => {
const span = document.createElement('span');
const span2 = document.createElement('span');
document.body.appendChild(span);
document.body.appendChild(span2);
range.setStart(span, 0);
range.setEnd(span2, 0);
expect(range.commonAncestorContainer === document.body).toBe(true);
});
});
describe('collapse()', () => {
it('Collapses the Range to the end container by default.', () => {
const container = document.createElement('div');
container.innerHTML = `Hello <u>world</u>!`;
range.setStart(container, 2);
range.setEnd(container.children[0], 1);
range.collapse();
expect(range.startContainer === container.children[0]).toBe(true);
expect(range.endContainer === container.children[0]).toBe(true);
expect(range.startOffset).toBe(1);
expect(range.endOffset).toBe(1);
expect(range.collapsed).toBe(true);
});
it('Collapses the Range to the end container, even though the toStart parameter is set to true, when the end container is a child of the start container.', () => {
const container = document.createElement('div');
container.innerHTML = `Hello <u>world</u>!`;
range.setStart(container, 2);
range.setEnd(container.children[0], 1);
range.collapse(true);
expect(range.startContainer === container.children[0]).toBe(true);
expect(range.endContainer === container.children[0]).toBe(true);
expect(range.startOffset).toBe(1);
expect(range.endOffset).toBe(1);
expect(range.collapsed).toBe(true);
});
});
});