|
| 1 | +'use strict'; |
| 2 | + |
| 3 | +require('../common'); |
| 4 | +const ArrayStream = require('../common/arraystream'); |
| 5 | +const assert = require('assert'); |
| 6 | +const { describe, it } = require('node:test'); |
| 7 | + |
| 8 | +const repl = require('repl'); |
| 9 | + |
| 10 | +function getReplOutput(input, replOptions, run = true) { |
| 11 | + const inputStream = new ArrayStream(); |
| 12 | + const outputStream = new ArrayStream(); |
| 13 | + |
| 14 | + repl.start({ |
| 15 | + input: inputStream, |
| 16 | + output: outputStream, |
| 17 | + ...replOptions, |
| 18 | + }); |
| 19 | + |
| 20 | + let output = ''; |
| 21 | + outputStream.write = (chunk) => (output += chunk); |
| 22 | + |
| 23 | + inputStream.emit('data', input); |
| 24 | + |
| 25 | + if (run) { |
| 26 | + inputStream.run(['']); |
| 27 | + } |
| 28 | + |
| 29 | + return output; |
| 30 | +} |
| 31 | + |
| 32 | +describe('repl with custom eval', { concurrency: true }, () => { |
| 33 | + it('uses the custom eval function as expected', () => { |
| 34 | + const output = getReplOutput('Convert this to upper case', { |
| 35 | + terminal: true, |
| 36 | + eval: (code, _ctx, _replRes, cb) => cb(null, code.toUpperCase()), |
| 37 | + }); |
| 38 | + assert.match( |
| 39 | + output, |
| 40 | + /Convert this to upper case\r\n'CONVERT THIS TO UPPER CASE\\n'/ |
| 41 | + ); |
| 42 | + }); |
| 43 | + |
| 44 | + it('surfaces errors as expected', () => { |
| 45 | + const output = getReplOutput('Convert this to upper case', { |
| 46 | + terminal: true, |
| 47 | + eval: (_code, _ctx, _replRes, cb) => cb(new Error('Testing Error')), |
| 48 | + }); |
| 49 | + assert.match(output, /Uncaught Error: Testing Error\n/); |
| 50 | + }); |
| 51 | + |
| 52 | + it('provides a repl context to the eval callback', async () => { |
| 53 | + const context = await new Promise((resolve) => { |
| 54 | + const r = repl.start({ |
| 55 | + eval: (_cmd, context) => resolve(context), |
| 56 | + }); |
| 57 | + r.context = { foo: 'bar' }; |
| 58 | + r.write('\n.exit\n'); |
| 59 | + }); |
| 60 | + assert.strictEqual(context.foo, 'bar'); |
| 61 | + }); |
| 62 | + |
| 63 | + it('provides the global context to the eval callback', async () => { |
| 64 | + const context = await new Promise((resolve) => { |
| 65 | + const r = repl.start({ |
| 66 | + useGlobal: true, |
| 67 | + eval: (_cmd, context) => resolve(context), |
| 68 | + }); |
| 69 | + global.foo = 'global_foo'; |
| 70 | + r.write('\n.exit\n'); |
| 71 | + }); |
| 72 | + |
| 73 | + assert.strictEqual(context.foo, 'global_foo'); |
| 74 | + delete global.foo; |
| 75 | + }); |
| 76 | + |
| 77 | + it('inherits variables from the global context but does not use it afterwords if `useGlobal` is false', async () => { |
| 78 | + global.bar = 'global_bar'; |
| 79 | + const context = await new Promise((resolve) => { |
| 80 | + const r = repl.start({ |
| 81 | + useGlobal: false, |
| 82 | + eval: (_cmd, context) => resolve(context), |
| 83 | + }); |
| 84 | + global.baz = 'global_baz'; |
| 85 | + r.write('\n.exit\n'); |
| 86 | + }); |
| 87 | + |
| 88 | + assert.strictEqual(context.bar, 'global_bar'); |
| 89 | + assert.notStrictEqual(context.baz, 'global_baz'); |
| 90 | + delete global.bar; |
| 91 | + delete global.baz; |
| 92 | + }); |
| 93 | + |
| 94 | + /** |
| 95 | + * Default preprocessor transforms |
| 96 | + * function f() {} to |
| 97 | + * var f = function f() {} |
| 98 | + * This test ensures that original input is preserved. |
| 99 | + * Reference: https://github.com/nodejs/node/issues/9743 |
| 100 | + */ |
| 101 | + it('preserves the original input', async () => { |
| 102 | + const cmd = await new Promise((resolve) => { |
| 103 | + const r = repl.start({ |
| 104 | + eval: (cmd) => resolve(cmd), |
| 105 | + }); |
| 106 | + r.write('function f() {}\n.exit\n'); |
| 107 | + }); |
| 108 | + assert.strictEqual(cmd, 'function f() {}\n'); |
| 109 | + }); |
| 110 | + |
| 111 | + it("doesn't show previews by default", () => { |
| 112 | + const input = "'Hello custom' + ' eval World!'"; |
| 113 | + const output = getReplOutput(input, { |
| 114 | + terminal: true, |
| 115 | + eval: (code, _ctx, _replRes, cb) => cb(null, eval(code)), |
| 116 | + }, false); |
| 117 | + assert.strictEqual(output, input); |
| 118 | + assert.doesNotMatch(output, /Hello custom eval World!/); |
| 119 | + }); |
| 120 | + |
| 121 | + it('does show previews if `preview` is set to `true`', () => { |
| 122 | + const input = "'Hello custom' + ' eval World!'"; |
| 123 | + const output = getReplOutput(input, { |
| 124 | + terminal: true, |
| 125 | + eval: (code, _ctx, _replRes, cb) => cb(null, eval(code)), |
| 126 | + preview: true, |
| 127 | + }, false); |
| 128 | + |
| 129 | + const escapedInput = input.replace(/\+/g, '\\+'); // TODO: migrate to `RegExp.escape` when it's available. |
| 130 | + assert.match( |
| 131 | + output, |
| 132 | + new RegExp(`${escapedInput}\n// 'Hello custom eval World!'`) |
| 133 | + ); |
| 134 | + }); |
| 135 | +}); |
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