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'use strict';
const common = require('../common');
const ArrayStream = require('../common/arraystream');
const assert = require('assert');
const Repl = require('repl');
common.skipIfInspectorDisabled();
const PROMPT = 'repl > ';
class REPLStream extends ArrayStream {
constructor() {
super();
this.lines = [''];
}
write(chunk) {
const chunkLines = chunk.toString('utf8').split('\n');
this.lines[this.lines.length - 1] += chunkLines[0];
if (chunkLines.length > 1) {
this.lines.push(...chunkLines.slice(1));
}
this.emit('line');
return true;
}
wait() {
this.lines = [''];
return new Promise((resolve, reject) => {
const onError = (err) => {
this.removeListener('line', onLine);
reject(err);
};
const onLine = () => {
if (this.lines[this.lines.length - 1].includes(PROMPT)) {
this.removeListener('error', onError);
this.removeListener('line', onLine);
resolve(this.lines);
}
};
this.once('error', onError);
this.on('line', onLine);
});
}
}
function runAndWait(cmds, repl) {
const promise = repl.inputStream.wait();
for (const cmd of cmds) {
repl.inputStream.run([cmd]);
}
return promise;
}
async function tests(options) {
const repl = Repl.start({
prompt: PROMPT,
stream: new REPLStream(),
ignoreUndefined: true,
useColors: true,
...options
});
repl.inputStream.run([
'function foo(x) { return x; }',
'function koo() { console.log("abc"); }',
'a = undefined;'
]);
const testCases = [
['foo', [2, 4], '[Function: foo]',
'foo',
'\x1B[90m[Function: foo]\x1B[39m\x1B[1A\x1B[11G\x1B[1B\x1B[2K\x1B[1A\r',
'\x1B[36m[Function: foo]\x1B[39m',
'\x1B[1G\x1B[0Jrepl > \x1B[8G'],
['koo', [2, 4], '[Function: koo]',
'koo',
'\x1B[90m[Function: koo]\x1B[39m\x1B[1A\x1B[11G\x1B[1B\x1B[2K\x1B[1A\r',
'\x1B[36m[Function: koo]\x1B[39m',
'\x1B[1G\x1B[0Jrepl > \x1B[8G'],
['a', [1, 2], undefined],
['{ a: true }', [2, 3], '{ a: \x1B[33mtrue\x1B[39m }',
'{ a: true }\r',
'{ a: \x1B[33mtrue\x1B[39m }',
'\x1B[1G\x1B[0Jrepl > \x1B[8G'],
['1n + 2n', [2, 5], '\x1B[33m3n\x1B[39m',
'1n + 2',
'\x1B[90mType[39m\x1B[1A\x1B[14G\x1B[1B\x1B[2K\x1B[1An',
'\x1B[90m3n\x1B[39m\x1B[1A\x1B[15G\x1B[1B\x1B[2K\x1B[1A\r',
'\x1B[33m3n\x1B[39m',
'\x1B[1G\x1B[0Jrepl > \x1B[8G'],
['{ a: true };', [2, 4], '\x1B[33mtrue\x1B[39m',
'{ a: true };',
'\x1B[90mtrue\x1B[39m\x1B[1A\x1B[20G\x1B[1B\x1B[2K\x1B[1A\r',
'\x1B[33mtrue\x1B[39m',
'\x1B[1G\x1B[0Jrepl > \x1B[8G'],
[' \t { a: true};', [2, 5], '\x1B[33mtrue\x1B[39m',
' \t { a: true}',
'\x1B[90m{ a: true }\x1B[39m\x1B[1A\x1B[21G\x1B[1B\x1B[2K\x1B[1A;',
'\x1B[90mtrue\x1B[39m\x1B[1A\x1B[22G\x1B[1B\x1B[2K\x1B[1A\r',
'\x1B[33mtrue\x1B[39m',
'\x1B[1G\x1B[0Jrepl > \x1B[8G']
];
const hasPreview = repl.terminal &&
(options.preview !== undefined ? !!options.preview : true);
for (const [input, length, expected, ...preview] of testCases) {
console.log(`Testing ${input}`);
const toBeRun = input.split('\n');
let lines = await runAndWait(toBeRun, repl);
assert.strictEqual(lines.length, length[+hasPreview]);
if (expected === undefined) {
assert(!lines.some((e) => e.includes('undefined')));
} else if (hasPreview) {
// Remove error messages. That allows the code to run in different
// engines.
// eslint-disable-next-line no-control-regex
lines = lines.map((line) => line.replace(/Error: .+?\x1B/, ''));
assert.deepStrictEqual(lines, preview);
} else {
assert.ok(lines[0].includes(expected), lines);
}
}
}
tests({ terminal: false }); // No preview
tests({ terminal: true }); // Preview
tests({ terminal: false, preview: false }); // No preview
tests({ terminal: false, preview: true }); // No preview
tests({ terminal: true, preview: true }); // Preview
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