src/SelectionManager.test.ts

   1 /**
   2  * @license MIT
   3  */
   4 import jsdom = require('jsdom');
   5 import { assert } from 'chai';
   6 import { ITerminal } from './Interfaces';
   7 import { CharMeasure } from './utils/CharMeasure';
   8 import { CircularList } from './utils/CircularList';
   9 import { SelectionManager } from './SelectionManager';
  10
  11 class TestSelectionManager extends SelectionManager {
  12   constructor(
  13     terminal: ITerminal,
  14     buffer: CircularList<any>,
  15     rowContainer: HTMLElement,
  16     charMeasure: CharMeasure
  17   ) {
  18     super(terminal, buffer, rowContainer, charMeasure);
  19   }
  20
  21   public selectWordAt(coords: [number, number]): void { this._selectWordAt(coords); }
  22
  23   // Disable DOM interaction
  24   public enable(): void {}
  25   public disable(): void {}
  26   public refresh(): void {}
  27 }
  28
  29 describe('SelectionManager', () => {
  30   let window: Window;
  31   let document: Document;
  32
  33   let buffer: CircularList<any>;
  34   let rowContainer: HTMLElement;
  35   let selectionManager: TestSelectionManager;
  36
  37   beforeEach(done => {
  38     jsdom.env('', (err, w) => {
  39       window = w;
  40       document = window.document;
  41       buffer = new CircularList<any>(100);
  42       selectionManager = new TestSelectionManager(null, buffer, rowContainer, null);
  43       done();
  44     });
  45   });
  46
  47   function stringToRow(text: string): [number, string, number][] {
  48     let result: [number, string, number][] = [];
  49     for (let i = 0; i < text.length; i++) {
  50       result.push([0, text.charAt(i), 1]);
  51     }
  52     return result;
  53   }
  54
  55   describe('_selectWordAt', () => {
  56     it('should expand selection for normal width chars', () => {
  57       buffer.push(stringToRow('foo bar'));
  58       selectionManager.selectWordAt([0, 0]);
  59       assert.equal(selectionManager.selectionText, 'foo');
  60       selectionManager.selectWordAt([1, 0]);
  61       assert.equal(selectionManager.selectionText, 'foo');
  62       selectionManager.selectWordAt([2, 0]);
  63       assert.equal(selectionManager.selectionText, 'foo');
  64       selectionManager.selectWordAt([3, 0]);
  65       assert.equal(selectionManager.selectionText, ' ');
  66       selectionManager.selectWordAt([4, 0]);
  67       assert.equal(selectionManager.selectionText, 'bar');
  68       selectionManager.selectWordAt([5, 0]);
  69       assert.equal(selectionManager.selectionText, 'bar');
  70       selectionManager.selectWordAt([6, 0]);
  71       assert.equal(selectionManager.selectionText, 'bar');
  72     });
  73     it('should expand selection for whitespace', () => {
  74       buffer.push(stringToRow('a   b'));
  75       selectionManager.selectWordAt([0, 0]);
  76       assert.equal(selectionManager.selectionText, 'a');
  77       selectionManager.selectWordAt([1, 0]);
  78       assert.equal(selectionManager.selectionText, '   ');
  79       selectionManager.selectWordAt([2, 0]);
  80       assert.equal(selectionManager.selectionText, '   ');
  81       selectionManager.selectWordAt([3, 0]);
  82       assert.equal(selectionManager.selectionText, '   ');
  83       selectionManager.selectWordAt([4, 0]);
  84       assert.equal(selectionManager.selectionText, 'b');
  85     });
  86     it('should expand selection for wide characters', () => {
  87       // Wide characters use a special format
  88       buffer.push([
  89         [null, '中', 2],
  90         [null, '', 0],
  91         [null, '文', 2],
  92         [null, '', 0],
  93         [null, ' ', 1],
  94         [null, 'a', 1],
  95         [null, '中', 2],
  96         [null, '', 0],
  97         [null, '文', 2],
  98         [null, '', 0],
  99         [null, 'b', 1],
 100         [null, ' ', 1],
 101         [null, 'f', 1],
 102         [null, 'o', 1],
 103         [null, 'o', 1]
 104       ]);
 105       // Ensure wide characters take up 2 columns
 106       selectionManager.selectWordAt([0, 0]);
 107       assert.equal(selectionManager.selectionText, '中文');
 108       selectionManager.selectWordAt([1, 0]);
 109       assert.equal(selectionManager.selectionText, '中文');
 110       selectionManager.selectWordAt([2, 0]);
 111       assert.equal(selectionManager.selectionText, '中文');
 112       selectionManager.selectWordAt([3, 0]);
 113       assert.equal(selectionManager.selectionText, '中文');
 114       selectionManager.selectWordAt([4, 0]);
 115       assert.equal(selectionManager.selectionText, ' ');
 116       // Ensure wide characters work when wrapped in normal width characters
 117       selectionManager.selectWordAt([5, 0]);
 118       assert.equal(selectionManager.selectionText, 'a中文b');
 119       selectionManager.selectWordAt([6, 0]);
 120       assert.equal(selectionManager.selectionText, 'a中文b');
 121       selectionManager.selectWordAt([7, 0]);
 122       assert.equal(selectionManager.selectionText, 'a中文b');
 123       selectionManager.selectWordAt([8, 0]);
 124       assert.equal(selectionManager.selectionText, 'a中文b');
 125       selectionManager.selectWordAt([9, 0]);
 126       assert.equal(selectionManager.selectionText, 'a中文b');
 127       selectionManager.selectWordAt([10, 0]);
 128       assert.equal(selectionManager.selectionText, 'a中文b');
 129       selectionManager.selectWordAt([11, 0]);
 130       assert.equal(selectionManager.selectionText, ' ');
 131       // Ensure normal width characters work fine in a line containing wide characters
 132       selectionManager.selectWordAt([12, 0]);
 133       assert.equal(selectionManager.selectionText, 'foo');
 134       selectionManager.selectWordAt([13, 0]);
 135       assert.equal(selectionManager.selectionText, 'foo');
 136       selectionManager.selectWordAt([14, 0]);
 137       assert.equal(selectionManager.selectionText, 'foo');
 138     });
 139   });
 140 });