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91 lines
2.4 KiB
91 lines
2.4 KiB
8 years ago
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// Flags: --expose-internals
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'use strict';
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const common = require('../common');
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const assert = require('assert');
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const readline = require('readline');
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const { Writable } = require('stream');
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const { CSI } = require('internal/readline');
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{
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assert(CSI);
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assert.strictEqual(CSI.kClearToBeginning, '\x1b[1K');
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assert.strictEqual(CSI.kClearToEnd, '\x1b[0K');
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assert.strictEqual(CSI.kClearLine, '\x1b[2K');
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assert.strictEqual(CSI.kClearScreenDown, '\x1b[0J');
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assert.strictEqual(CSI`1${2}3`, '\x1b[123');
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}
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class TestWritable extends Writable {
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constructor() {
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super();
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this.data = '';
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}
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_write(chunk, encoding, callback) {
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this.data += chunk.toString();
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callback();
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}
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}
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const writable = new TestWritable();
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readline.clearScreenDown(writable);
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assert.deepStrictEqual(writable.data, CSI.kClearScreenDown);
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writable.data = '';
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readline.clearLine(writable, -1);
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assert.deepStrictEqual(writable.data, CSI.kClearToBeginning);
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writable.data = '';
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readline.clearLine(writable, 1);
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assert.deepStrictEqual(writable.data, CSI.kClearToEnd);
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writable.data = '';
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readline.clearLine(writable, 0);
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assert.deepStrictEqual(writable.data, CSI.kClearLine);
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// Nothing is written when moveCursor 0, 0
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[
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[0, 0, ''],
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[1, 0, '\x1b[1C'],
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[-1, 0, '\x1b[1D'],
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[0, 1, '\x1b[1B'],
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[0, -1, '\x1b[1A'],
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[1, 1, '\x1b[1C\x1b[1B'],
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[-1, 1, '\x1b[1D\x1b[1B'],
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[-1, -1, '\x1b[1D\x1b[1A'],
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[1, -1, '\x1b[1C\x1b[1A'],
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].forEach((set) => {
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writable.data = '';
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readline.moveCursor(writable, set[0], set[1]);
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assert.deepStrictEqual(writable.data, set[2]);
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});
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assert.doesNotThrow(() => readline.cursorTo(null));
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assert.doesNotThrow(() => readline.cursorTo());
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writable.data = '';
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assert.doesNotThrow(() => readline.cursorTo(writable, 'a'));
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assert.strictEqual(writable.data, '');
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writable.data = '';
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assert.doesNotThrow(() => readline.cursorTo(writable, 'a', 'b'));
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assert.strictEqual(writable.data, '');
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writable.data = '';
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assert.throws(
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() => readline.cursorTo(writable, 'a', 1),
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common.expectsError({
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type: Error,
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message: /^Can't set cursor row without also setting it's column$/
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}));
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assert.strictEqual(writable.data, '');
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writable.data = '';
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assert.doesNotThrow(() => readline.cursorTo(writable, 1, 'a'));
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assert.strictEqual(writable.data, '\x1b[2G');
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writable.data = '';
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assert.doesNotThrow(() => readline.cursorTo(writable, 1, 2));
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assert.strictEqual(writable.data, '\x1b[3;2H');
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