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7e977d7cd4
This partially fixes contexts like `{} instanceof Object === false`
in the REPL. This does not fix all cases, since it's something
fundamental from the REPL's design that things like these can happen.
Refs: https://github.com/nodejs/node/issues/27859
PR-URL: https://github.com/nodejs/node/pull/28561
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-By: Rich Trott <rtrott@gmail.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Anto Aravinth <anto.aravinth.cse@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
85 lines
2.4 KiB
JavaScript
85 lines
2.4 KiB
JavaScript
'use strict';
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require('../common');
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const ArrayStream = require('../common/arraystream');
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const assert = require('assert');
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const repl = require('repl');
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const vm = require('vm');
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// Create a dummy stream that does nothing.
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const stream = new ArrayStream();
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// Test context when useGlobal is false.
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{
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const r = repl.start({
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input: stream,
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output: stream,
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useGlobal: false
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});
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let output = '';
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stream.write = function(d) {
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output += d;
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};
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// Ensure that the repl context gets its own "console" instance.
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assert(r.context.console);
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// Ensure that the repl console instance is not the global one.
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assert.notStrictEqual(r.context.console, console);
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assert.notStrictEqual(r.context.Object, Object);
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stream.run(['({} instanceof Object)']);
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assert.strictEqual(output, 'true\n> ');
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const context = r.createContext();
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// Ensure that the repl context gets its own "console" instance.
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assert(context.console instanceof require('console').Console);
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// Ensure that the repl's global property is the context.
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assert.strictEqual(context.global, context);
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// Ensure that the repl console instance is writable.
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context.console = 'foo';
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r.close();
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}
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// Test for context side effects.
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{
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const server = repl.start({ input: stream, output: stream });
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assert.ok(!server.underscoreAssigned);
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assert.strictEqual(server.lines.length, 0);
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// An assignment to '_' in the repl server
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server.write('_ = 500;\n');
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assert.ok(server.underscoreAssigned);
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assert.strictEqual(server.lines.length, 1);
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assert.strictEqual(server.lines[0], '_ = 500;');
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assert.strictEqual(server.last, 500);
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// Use the server to create a new context
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const context = server.createContext();
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// Ensure that creating a new context does not
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// have side effects on the server
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assert.ok(server.underscoreAssigned);
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assert.strictEqual(server.lines.length, 1);
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assert.strictEqual(server.lines[0], '_ = 500;');
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assert.strictEqual(server.last, 500);
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// Reset the server context
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server.resetContext();
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assert.ok(!server.underscoreAssigned);
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assert.strictEqual(server.lines.length, 0);
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// Ensure that assigning to '_' in the new context
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// does not change the value in our server.
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assert.ok(!server.underscoreAssigned);
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vm.runInContext('_ = 1000;\n', context);
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assert.ok(!server.underscoreAssigned);
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assert.strictEqual(server.lines.length, 0);
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server.close();
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}
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