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xterm.js/src/SelectionManager.test.ts
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/**
* Copyright (c) 2017 The xterm.js authors. All rights reserved.
* @license MIT
*/
import jsdom = require('jsdom');
import { assert } from 'chai';
import { CharMeasure } from './utils/CharMeasure';
import { CircularList } from './utils/CircularList';
import { SelectionManager } from './SelectionManager';
import { SelectionModel } from './SelectionModel';
import { BufferSet } from './BufferSet';
import { LineData, CharData, ITerminal, ICircularList, IBuffer } from './Types';
import { MockTerminal } from './utils/TestUtils.test';
class TestMockTerminal extends MockTerminal {
emit(event: string, data: any): void {}
}
class TestSelectionManager extends SelectionManager {
constructor(
terminal: ITerminal,
charMeasure: CharMeasure
) {
super(terminal, charMeasure);
}
public get model(): SelectionModel { return this._model; }
public selectLineAt(line: number): void { this._selectLineAt(line); }
public selectWordAt(coords: [number, number]): void { this._selectWordAt(coords); }
// Disable DOM interaction
public enable(): void {}
public disable(): void {}
public refresh(): void {}
}
describe('SelectionManager', () => {
let dom: jsdom.JSDOM;
let window: Window;
let document: Document;
let terminal: ITerminal;
let buffer: IBuffer;
let rowContainer: HTMLElement;
let selectionManager: TestSelectionManager;
beforeEach(() => {
dom = new jsdom.JSDOM('');
window = dom.window;
document = window.document;
terminal = new TestMockTerminal();
terminal.cols = 80;
terminal.rows = 2;
terminal.options.scrollback = 100;
terminal.buffers = new BufferSet(terminal);
terminal.buffer = terminal.buffers.active;
buffer = terminal.buffer;
selectionManager = new TestSelectionManager(terminal, null);
});
function stringToRow(text: string): LineData {
let result: LineData = [];
for (let i = 0; i < text.length; i++) {
result.push([0, text.charAt(i), 1, text.charCodeAt(i)]);
}
return result;
}
function stringArrayToRow(chars: string[]): LineData {
return chars.map(c => <CharData>[0, c, 1, c.charCodeAt(0)]);
}
describe('_selectWordAt', () => {
it('should expand selection for normal width chars', () => {
buffer.lines.set(0, stringToRow('foo bar'));
selectionManager.selectWordAt([0, 0]);
assert.equal(selectionManager.selectionText, 'foo');
selectionManager.selectWordAt([1, 0]);
assert.equal(selectionManager.selectionText, 'foo');
selectionManager.selectWordAt([2, 0]);
assert.equal(selectionManager.selectionText, 'foo');
selectionManager.selectWordAt([3, 0]);
assert.equal(selectionManager.selectionText, ' ');
selectionManager.selectWordAt([4, 0]);
assert.equal(selectionManager.selectionText, 'bar');
selectionManager.selectWordAt([5, 0]);
assert.equal(selectionManager.selectionText, 'bar');
selectionManager.selectWordAt([6, 0]);
assert.equal(selectionManager.selectionText, 'bar');
});
it('should expand selection for whitespace', () => {
buffer.lines.set(0, stringToRow('a b'));
selectionManager.selectWordAt([0, 0]);
assert.equal(selectionManager.selectionText, 'a');
selectionManager.selectWordAt([1, 0]);
assert.equal(selectionManager.selectionText, ' ');
selectionManager.selectWordAt([2, 0]);
assert.equal(selectionManager.selectionText, ' ');
selectionManager.selectWordAt([3, 0]);
assert.equal(selectionManager.selectionText, ' ');
selectionManager.selectWordAt([4, 0]);
assert.equal(selectionManager.selectionText, 'b');
});
it('should expand selection for wide characters', () => {
// Wide characters use a special format
buffer.lines.set(0, [
[null, '中', 2, '中'.charCodeAt(0)],
[null, '', 0, null],
[null, '文', 2, '文'.charCodeAt(0)],
[null, '', 0, null],
[null, ' ', 1, ' '.charCodeAt(0)],
[null, 'a', 1, 'a'.charCodeAt(0)],
[null, '中', 2, '中'.charCodeAt(0)],
[null, '', 0, null],
[null, '文', 2, '文'.charCodeAt(0)],
[null, '', 0, ''.charCodeAt(0)],
[null, 'b', 1, 'b'.charCodeAt(0)],
[null, ' ', 1, ' '.charCodeAt(0)],
[null, 'f', 1, 'f'.charCodeAt(0)],
[null, 'o', 1, 'o'.charCodeAt(0)],
[null, 'o', 1, 'o'.charCodeAt(0)]
]);
// Ensure wide characters take up 2 columns
selectionManager.selectWordAt([0, 0]);
assert.equal(selectionManager.selectionText, '中文');
selectionManager.selectWordAt([1, 0]);
assert.equal(selectionManager.selectionText, '中文');
selectionManager.selectWordAt([2, 0]);
assert.equal(selectionManager.selectionText, '中文');
selectionManager.selectWordAt([3, 0]);
assert.equal(selectionManager.selectionText, '中文');
selectionManager.selectWordAt([4, 0]);
assert.equal(selectionManager.selectionText, ' ');
// Ensure wide characters work when wrapped in normal width characters
selectionManager.selectWordAt([5, 0]);
assert.equal(selectionManager.selectionText, 'a中文b');
selectionManager.selectWordAt([6, 0]);
assert.equal(selectionManager.selectionText, 'a中文b');
selectionManager.selectWordAt([7, 0]);
assert.equal(selectionManager.selectionText, 'a中文b');
selectionManager.selectWordAt([8, 0]);
assert.equal(selectionManager.selectionText, 'a中文b');
selectionManager.selectWordAt([9, 0]);
assert.equal(selectionManager.selectionText, 'a中文b');
selectionManager.selectWordAt([10, 0]);
assert.equal(selectionManager.selectionText, 'a中文b');
selectionManager.selectWordAt([11, 0]);
assert.equal(selectionManager.selectionText, ' ');
// Ensure normal width characters work fine in a line containing wide characters
selectionManager.selectWordAt([12, 0]);
assert.equal(selectionManager.selectionText, 'foo');
selectionManager.selectWordAt([13, 0]);
assert.equal(selectionManager.selectionText, 'foo');
selectionManager.selectWordAt([14, 0]);
assert.equal(selectionManager.selectionText, 'foo');
});
it('should select up to non-path characters that are commonly adjacent to paths', () => {
buffer.lines.set(0, stringToRow('(cd)[ef]{gh}\'ij"'));
selectionManager.selectWordAt([0, 0]);
assert.equal(selectionManager.selectionText, '(cd');
selectionManager.selectWordAt([1, 0]);
assert.equal(selectionManager.selectionText, 'cd');
selectionManager.selectWordAt([2, 0]);
assert.equal(selectionManager.selectionText, 'cd');
selectionManager.selectWordAt([3, 0]);
assert.equal(selectionManager.selectionText, 'cd)');
selectionManager.selectWordAt([4, 0]);
assert.equal(selectionManager.selectionText, '[ef');
selectionManager.selectWordAt([5, 0]);
assert.equal(selectionManager.selectionText, 'ef');
selectionManager.selectWordAt([6, 0]);
assert.equal(selectionManager.selectionText, 'ef');
selectionManager.selectWordAt([7, 0]);
assert.equal(selectionManager.selectionText, 'ef]');
selectionManager.selectWordAt([8, 0]);
assert.equal(selectionManager.selectionText, '{gh');
selectionManager.selectWordAt([9, 0]);
assert.equal(selectionManager.selectionText, 'gh');
selectionManager.selectWordAt([10, 0]);
assert.equal(selectionManager.selectionText, 'gh');
selectionManager.selectWordAt([11, 0]);
assert.equal(selectionManager.selectionText, 'gh}');
selectionManager.selectWordAt([12, 0]);
assert.equal(selectionManager.selectionText, '\'ij');
selectionManager.selectWordAt([13, 0]);
assert.equal(selectionManager.selectionText, 'ij');
selectionManager.selectWordAt([14, 0]);
assert.equal(selectionManager.selectionText, 'ij');
selectionManager.selectWordAt([15, 0]);
assert.equal(selectionManager.selectionText, 'ij"');
});
describe('emoji', () => {
it('should treat a single emoji as a word when wrapped in spaces', () => {
buffer.lines.set(0, stringToRow(' ⚽ a')); // The a is here to prevent the space being trimmed in selectionText
selectionManager.selectWordAt([0, 0]);
assert.equal(selectionManager.selectionText, ' ');
selectionManager.selectWordAt([1, 0]);
assert.equal(selectionManager.selectionText, '⚽');
selectionManager.selectWordAt([2, 0]);
assert.equal(selectionManager.selectionText, ' ');
});
it('should treat multiple emojis as a word when wrapped in spaces', () => {
buffer.lines.set(0, stringToRow(' ⚽⚽ a')); // The a is here to prevent the space being trimmed in selectionText
selectionManager.selectWordAt([0, 0]);
assert.equal(selectionManager.selectionText, ' ');
selectionManager.selectWordAt([1, 0]);
assert.equal(selectionManager.selectionText, '⚽⚽');
selectionManager.selectWordAt([2, 0]);
assert.equal(selectionManager.selectionText, '⚽⚽');
selectionManager.selectWordAt([3, 0]);
assert.equal(selectionManager.selectionText, ' ');
});
it('should treat emojis using the zero-width-joiner as a single word', () => {
// Note that the first 3 emojis include the invisible ZWJ char
buffer.lines.set(0, stringArrayToRow([
' ', '👨‍', '👩‍', '👧‍', '👦', ' ', 'a'
])); // The a is here to prevent the space being trimmed in selectionText
selectionManager.selectWordAt([0, 0]);
assert.equal(selectionManager.selectionText, ' ');
// ZWJ emojis do not combine in the terminal so the family emoji used here consumed 4 cells
// The selection text should retain ZWJ chars despite not combining on the terminal
selectionManager.selectWordAt([1, 0]);
assert.equal(selectionManager.selectionText, '👨‍👩‍👧‍👦');
selectionManager.selectWordAt([2, 0]);
assert.equal(selectionManager.selectionText, '👨‍👩‍👧‍👦');
selectionManager.selectWordAt([3, 0]);
assert.equal(selectionManager.selectionText, '👨‍👩‍👧‍👦');
selectionManager.selectWordAt([4, 0]);
assert.equal(selectionManager.selectionText, '👨‍👩‍👧‍👦');
selectionManager.selectWordAt([5, 0]);
assert.equal(selectionManager.selectionText, ' ');
});
it('should treat emojis and characters joined together as a word', () => {
buffer.lines.set(0, stringToRow(' ⚽ab cd⚽ ef⚽gh')); // The a is here to prevent the space being trimmed in selectionText
selectionManager.selectWordAt([0, 0]);
assert.equal(selectionManager.selectionText, ' ');
selectionManager.selectWordAt([1, 0]);
assert.equal(selectionManager.selectionText, '⚽ab');
selectionManager.selectWordAt([2, 0]);
assert.equal(selectionManager.selectionText, '⚽ab');
selectionManager.selectWordAt([3, 0]);
assert.equal(selectionManager.selectionText, '⚽ab');
selectionManager.selectWordAt([4, 0]);
assert.equal(selectionManager.selectionText, ' ');
selectionManager.selectWordAt([5, 0]);
assert.equal(selectionManager.selectionText, 'cd⚽');
selectionManager.selectWordAt([6, 0]);
assert.equal(selectionManager.selectionText, 'cd⚽');
selectionManager.selectWordAt([7, 0]);
assert.equal(selectionManager.selectionText, 'cd⚽');
selectionManager.selectWordAt([8, 0]);
assert.equal(selectionManager.selectionText, ' ');
selectionManager.selectWordAt([9, 0]);
assert.equal(selectionManager.selectionText, 'ef⚽gh');
selectionManager.selectWordAt([10, 0]);
assert.equal(selectionManager.selectionText, 'ef⚽gh');
selectionManager.selectWordAt([11, 0]);
assert.equal(selectionManager.selectionText, 'ef⚽gh');
selectionManager.selectWordAt([12, 0]);
assert.equal(selectionManager.selectionText, 'ef⚽gh');
selectionManager.selectWordAt([13, 0]);
assert.equal(selectionManager.selectionText, 'ef⚽gh');
});
it('should treat complex emojis and characters joined together as a word', () => {
// This emoji is the flag for England and is made up of: 1F3F4 E0067 E0062 E0065 E006E E0067 E007F
buffer.lines.set(0, stringArrayToRow([
' ', '🏴󠁧󠁢󠁥󠁮󠁧󠁿', 'a', 'b', ' ', 'c', 'd', '🏴󠁧󠁢󠁥󠁮󠁧󠁿', ' ', 'e', 'f', '🏴󠁧󠁢󠁥󠁮󠁧󠁿', 'g', 'h', ' ', 'a'
])); // The a is here to prevent the space being trimmed in selectionText
selectionManager.selectWordAt([0, 0]);
assert.equal(selectionManager.selectionText, ' ');
selectionManager.selectWordAt([1, 0]);
assert.equal(selectionManager.selectionText, '🏴󠁧󠁢󠁥󠁮󠁧󠁿ab');
selectionManager.selectWordAt([2, 0]);
assert.equal(selectionManager.selectionText, '🏴󠁧󠁢󠁥󠁮󠁧󠁿ab');
selectionManager.selectWordAt([3, 0]);
assert.equal(selectionManager.selectionText, '🏴󠁧󠁢󠁥󠁮󠁧󠁿ab');
selectionManager.selectWordAt([4, 0]);
assert.equal(selectionManager.selectionText, ' ');
selectionManager.selectWordAt([5, 0]);
assert.equal(selectionManager.selectionText, 'cd🏴󠁧󠁢󠁥󠁮󠁧󠁿');
selectionManager.selectWordAt([6, 0]);
assert.equal(selectionManager.selectionText, 'cd🏴󠁧󠁢󠁥󠁮󠁧󠁿');
selectionManager.selectWordAt([7, 0]);
assert.equal(selectionManager.selectionText, 'cd🏴󠁧󠁢󠁥󠁮󠁧󠁿');
selectionManager.selectWordAt([8, 0]);
assert.equal(selectionManager.selectionText, ' ');
selectionManager.selectWordAt([9, 0]);
assert.equal(selectionManager.selectionText, 'ef🏴󠁧󠁢󠁥󠁮󠁧󠁿gh');
selectionManager.selectWordAt([10, 0]);
assert.equal(selectionManager.selectionText, 'ef🏴󠁧󠁢󠁥󠁮󠁧󠁿gh');
selectionManager.selectWordAt([11, 0]);
assert.equal(selectionManager.selectionText, 'ef🏴󠁧󠁢󠁥󠁮󠁧󠁿gh');
selectionManager.selectWordAt([12, 0]);
assert.equal(selectionManager.selectionText, 'ef🏴󠁧󠁢󠁥󠁮󠁧󠁿gh');
selectionManager.selectWordAt([13, 0]);
assert.equal(selectionManager.selectionText, 'ef🏴󠁧󠁢󠁥󠁮󠁧󠁿gh');
});
});
});
describe('_selectLineAt', () => {
it('should select the entire line', () => {
buffer.lines.set(0, stringToRow('foo bar'));
selectionManager.selectLineAt(0);
assert.equal(selectionManager.selectionText, 'foo bar', 'The selected text is correct');
assert.deepEqual(selectionManager.model.finalSelectionStart, [0, 0]);
assert.deepEqual(selectionManager.model.finalSelectionEnd, [terminal.cols, 0], 'The actual selection spans the entire column');
});
});
describe('selectAll', () => {
it('should select the entire buffer, beyond the viewport', () => {
buffer.lines.length = 5;
buffer.lines.set(0, stringToRow('1'));
buffer.lines.set(1, stringToRow('2'));
buffer.lines.set(2, stringToRow('3'));
buffer.lines.set(3, stringToRow('4'));
buffer.lines.set(4, stringToRow('5'));
selectionManager.selectAll();
terminal.buffer.ybase = buffer.lines.length - terminal.rows;
assert.equal(selectionManager.selectionText, '1\n2\n3\n4\n5');
});
});
describe('hasSelection', () => {
it('should return whether there is a selection', () => {
selectionManager.model.selectionStart = [0, 0];
selectionManager.model.selectionStartLength = 0;
assert.equal(selectionManager.hasSelection, false);
selectionManager.model.selectionEnd = [0, 0];
assert.equal(selectionManager.hasSelection, false);
selectionManager.model.selectionEnd = [1, 0];
assert.equal(selectionManager.hasSelection, true);
selectionManager.model.selectionEnd = [0, 1];
assert.equal(selectionManager.hasSelection, true);
selectionManager.model.selectionEnd = [1, 1];
assert.equal(selectionManager.hasSelection, true);
});
});
});
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