mirror of https://gitee.com/openkylin/nodejs.git
71 lines
1.7 KiB
JavaScript
71 lines
1.7 KiB
JavaScript
'use strict';
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// Flags: --expose-internals
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const common = require('../common');
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const readline = require('readline');
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const assert = require('assert');
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const EventEmitter = require('events').EventEmitter;
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const { getStringWidth } = require('internal/util/inspect');
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common.skipIfDumbTerminal();
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// This test verifies that the tab completion supports unicode and the writes
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// are limited to the minimum.
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[
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'あ',
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'𐐷',
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'🐕'
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].forEach((char) => {
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[true, false].forEach((lineBreak) => {
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const completer = (line) => [
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[
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'First group',
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'',
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`${char}${'a'.repeat(10)}`, `${char}${'b'.repeat(10)}`, char.repeat(11),
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],
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line
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];
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let output = '';
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const width = getStringWidth(char) - 1;
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class FakeInput extends EventEmitter {
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columns = ((width + 1) * 10 + (lineBreak ? 0 : 10)) * 3
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write = common.mustCall((data) => {
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output += data;
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}, 6)
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resume() {}
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pause() {}
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end() {}
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}
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const fi = new FakeInput();
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const rli = new readline.Interface({
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input: fi,
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output: fi,
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terminal: true,
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completer: completer
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});
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const last = '\r\nFirst group\r\n\r\n' +
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`${char}${'a'.repeat(10)}${' '.repeat(2 + width * 10)}` +
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`${char}${'b'.repeat(10)}` +
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(lineBreak ? '\r\n' : ' '.repeat(2 + width * 10)) +
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`${char.repeat(11)}\r\n` +
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`\r\n\u001b[1G\u001b[0J> ${char}\u001b[${4 + width}G`;
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const expectations = [char, '', last];
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rli.on('line', common.mustNotCall());
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for (const character of `${char}\t\t`) {
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fi.emit('data', character);
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assert.strictEqual(output, expectations.shift());
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output = '';
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}
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rli.close();
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});
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});
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