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'use strict';
require('../common');
const ArrayStream = require('../common/arraystream');
const assert = require('assert');
const repl = require('repl');
const vm = require('vm');
// Create a dummy stream that does nothing.
const stream = new ArrayStream();
// Test context when useGlobal is false.
{
const r = repl.start({
input: stream,
output: stream,
useGlobal: false
});
// Ensure that the repl context gets its own "console" instance.
assert(r.context.console);
// Ensure that the repl console instance is not the global one.
assert.notStrictEqual(r.context.console, console);
const context = r.createContext();
// Ensure that the repl context gets its own "console" instance.
assert(context.console instanceof require('console').Console);
// Ensure that the repl's global property is the context.
assert.strictEqual(context.global, context);
// Ensure that the repl console instance is writable.
context.console = 'foo';
r.close();
}
// Test for context side effects.
{
const server = repl.start({ input: stream, output: stream });
assert.ok(!server.underscoreAssigned);
assert.strictEqual(server.lines.length, 0);
// an assignment to '_' in the repl server
server.write('_ = 500;\n');
assert.ok(server.underscoreAssigned);
assert.strictEqual(server.lines.length, 1);
assert.strictEqual(server.lines[0], '_ = 500;');
assert.strictEqual(server.last, 500);
// use the server to create a new context
const context = server.createContext();
// ensure that creating a new context does not
// have side effects on the server
assert.ok(server.underscoreAssigned);
assert.strictEqual(server.lines.length, 1);
assert.strictEqual(server.lines[0], '_ = 500;');
assert.strictEqual(server.last, 500);
// reset the server context
server.resetContext();
assert.ok(!server.underscoreAssigned);
assert.strictEqual(server.lines.length, 0);
// ensure that assigning to '_' in the new context
// does not change the value in our server.
assert.ok(!server.underscoreAssigned);
vm.runInContext('_ = 1000;\n', context);
assert.ok(!server.underscoreAssigned);
assert.strictEqual(server.lines.length, 0);
server.close();
}
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