mirror of https://github.com/nodejs/node.git
40 lines
1.1 KiB
JavaScript
40 lines
1.1 KiB
JavaScript
'use strict';
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const common = require('../common');
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const { describe, it } = require('node:test');
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const assert = require('assert');
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const { startNewREPLServer } = require('../common/repl');
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function getNoResultsFunction() {
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return common.mustSucceed((data) => {
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assert.deepStrictEqual(data[0], []);
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});
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}
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describe('REPL tab completion without side effects', () => {
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const setup = [
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'globalThis.counter = 0;',
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'function incCounter() { return counter++; }',
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'const arr = [{ bar: "baz" }];',
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];
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// None of these expressions should affect the value of `counter`
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for (const code of [
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'incCounter().',
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'a=(counter+=1).foo.',
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'a=(counter++).foo.',
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'for((counter)of[1])foo.',
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'for((counter)in{1:1})foo.',
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'arr[incCounter()].b',
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]) {
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it(`does not evaluate with side effects (${code})`, async () => {
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const { replServer, input } = startNewREPLServer();
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input.run(setup);
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replServer.complete(code, getNoResultsFunction());
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assert.strictEqual(replServer.context.counter, 0);
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replServer.close();
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});
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}
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});
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