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86 lines
2.2 KiB
86 lines
2.2 KiB
'use strict';
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// Flags: --expose-internals
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const common = require('../common');
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const stream = require('stream');
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const repl = require('internal/repl');
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const assert = require('assert');
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// Array of [useGlobal, expectedResult] pairs
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const globalTestCases = [
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[false, 'undefined'],
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[true, '\'tacos\''],
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[undefined, 'undefined']
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];
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const globalTest = (useGlobal, cb, output) => (err, repl) => {
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if (err)
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return cb(err);
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// The REPL registers 'module' and 'require' globals
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common.allowGlobals(repl.context.module, repl.context.require);
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let str = '';
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output.on('data', (data) => (str += data));
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global.lunch = 'tacos';
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repl.write('global.lunch;\n');
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repl.close();
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delete global.lunch;
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cb(null, str.trim());
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};
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// Test how the global object behaves in each state for useGlobal
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for (const [option, expected] of globalTestCases) {
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runRepl(option, globalTest, common.mustCall((err, output) => {
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assert.ifError(err);
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assert.strictEqual(output, expected);
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}));
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}
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// Test how shadowing the process object via `let`
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// behaves in each useGlobal state. Note: we can't
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// actually test the state when useGlobal is true,
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// because the exception that's generated is caught
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// (see below), but errors are printed, and the test
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// suite is aware of it, causing a failure to be flagged.
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//
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const processTestCases = [false, undefined];
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const processTest = (useGlobal, cb, output) => (err, repl) => {
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if (err)
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return cb(err);
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let str = '';
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output.on('data', (data) => (str += data));
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// if useGlobal is false, then `let process` should work
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repl.write('let process;\n');
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repl.write('21 * 2;\n');
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repl.close();
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cb(null, str.trim());
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};
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for (const option of processTestCases) {
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runRepl(option, processTest, common.mustCall((err, output) => {
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assert.ifError(err);
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assert.strictEqual(output, 'undefined\n42');
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}));
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}
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function runRepl(useGlobal, testFunc, cb) {
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const inputStream = new stream.PassThrough();
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const outputStream = new stream.PassThrough();
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const opts = {
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input: inputStream,
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output: outputStream,
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useGlobal: useGlobal,
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useColors: false,
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terminal: false,
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prompt: ''
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};
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repl.createInternalRepl(
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process.env,
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opts,
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testFunc(useGlobal, cb, opts.output));
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}
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