80 lines
3.0 KiB
TypeScript
80 lines
3.0 KiB
TypeScript
/**
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* Copyright (c) 2017 The xterm.js authors. All rights reserved.
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* @license MIT
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*/
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import { TestTerminal } from './utils/TestUtils.test';
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import { assert } from 'chai';
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import { getStringCellWidth } from './CharWidth';
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import { IBuffer } from './Types';
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import { CHAR_DATA_WIDTH_INDEX, CHAR_DATA_CHAR_INDEX } from './Buffer';
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describe('getStringCellWidth', function(): void {
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let terminal: TestTerminal;
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beforeEach(() => {
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terminal = new TestTerminal({rows: 5, cols: 30});
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});
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function sumWidths(buffer: IBuffer, start: number, end: number, sentinel: string): number {
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let result = 0;
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for (let i = start; i < end; ++i) {
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const line = buffer.lines.get(i);
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for (let j = 0; j < line.length; ++j) { // TODO: change to trimBorder with multiline
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const ch = line.get(j);
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result += ch[CHAR_DATA_WIDTH_INDEX];
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// return on sentinel
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if (ch[CHAR_DATA_CHAR_INDEX] === sentinel) {
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return result;
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}
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}
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}
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return result;
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}
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it('ASCII chars', function(): void {
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const input = 'This is just ASCII text.#';
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terminal.writeSync(input);
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const s = terminal.buffer.iterator(true).next().content;
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assert.equal(input, s);
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assert.equal(getStringCellWidth(s), sumWidths(terminal.buffer, 0, 1, '#'));
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});
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it('combining chars', function(): void {
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const input = 'e\u0301e\u0301e\u0301e\u0301e\u0301e\u0301e\u0301e\u0301e\u0301#';
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terminal.writeSync(input);
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const s = terminal.buffer.iterator(true).next().content;
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assert.equal(input, s);
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assert.equal(getStringCellWidth(s), sumWidths(terminal.buffer, 0, 1, '#'));
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});
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it('surrogate chars', function(): void {
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const input = '𝄞𝄞𝄞𝄞𝄞𝄞𝄞𝄞𝄞𝄞𝄞𝄞𝄞𝄞𝄞𝄞𝄞𝄞𝄞𝄞𝄞𝄞𝄞𝄞𝄞𝄞𝄞#';
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terminal.writeSync(input);
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const s = terminal.buffer.iterator(true).next().content;
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assert.equal(input, s);
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assert.equal(getStringCellWidth(s), sumWidths(terminal.buffer, 0, 1, '#'));
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});
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it('surrogate combining chars', function(): void {
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const input = '𓂀\u0301𓂀\u0301𓂀\u0301𓂀\u0301𓂀\u0301𓂀\u0301𓂀\u0301𓂀\u0301𓂀\u0301𓂀\u0301𓂀\u0301#';
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terminal.writeSync(input);
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const s = terminal.buffer.iterator(true).next().content;
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assert.equal(input, s);
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assert.equal(getStringCellWidth(s), sumWidths(terminal.buffer, 0, 1, '#'));
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});
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it('fullwidth chars', function(): void {
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const input = '１２３４５６７８９０#';
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terminal.writeSync(input);
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const s = terminal.buffer.iterator(true).next().content;
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assert.equal(input, s);
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assert.equal(getStringCellWidth(s), sumWidths(terminal.buffer, 0, 1, '#'));
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});
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it('fullwidth chars offset 1', function(): void {
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const input = 'a１２３４５６７８９０#';
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terminal.writeSync(input);
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const s = terminal.buffer.iterator(true).next().content;
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assert.equal(input, s);
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assert.equal(getStringCellWidth(s), sumWidths(terminal.buffer, 0, 1, '#'));
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});
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// TODO: multiline tests once #1685 is resolved
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});
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