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'use strict';
const common = require('../common');
const path = require('path');
const spawn = require('child_process').spawn;
const assert = require('assert');
const DELAY = common.platformTimeout(200);
const fixture = path.join(
common.fixturesDir,
'debugger-util-regression-fixture.js'
);
const args = [
'debug',
`--port=${common.PORT}`,
fixture
];
const proc = spawn(process.execPath, args, { stdio: 'pipe' });
proc.stdout.setEncoding('utf8');
proc.stderr.setEncoding('utf8');
let stdout = '';
let stderr = '';
proc.stdout.on('data', (data) => stdout += data);
proc.stderr.on('data', (data) => stderr += data);
let nextCount = 0;
let exit = false;
// We look at output periodically. We don't do this in the on('data') as we
// may end up processing partial output. Processing periodically ensures that
// the debugger is in a stable state before we take the next step.
const timer = setInterval(() => {
if (stdout.includes('> 1') && nextCount < 1 ||
stdout.includes('> 2') && nextCount < 2 ||
stdout.includes('> 3') && nextCount < 3 ||
stdout.includes('> 4') && nextCount < 4) {
nextCount++;
proc.stdin.write('n\n');
} else if (!exit && (stdout.includes('< { a: \'b\' }'))) {
exit = true;
proc.stdin.write('.exit\n');
// We can cancel the timer and terminate normally.
clearInterval(timer);
} else if (stdout.includes('program terminated')) {
// Catch edge case present in v4.x
// process will terminate after call to util.inspect
common.fail('the program should not terminate');
}
}, DELAY);
process.on('exit', (code) => {
assert.strictEqual(code, 0, 'the program should exit cleanly');
assert.strictEqual(stdout.includes('{ a: \'b\' }'), true,
'the debugger should print the result of util.inspect');
assert.strictEqual(stderr, '', 'stderr should be empty');
});
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