codeceptjs/lib/listener/trace.js

Modern Era Acceptance Testing Framework for NodeJS

const output = require('../output');
const event = require('../event');
const AssertionFailedError = require('../assert/error');

/**
 * Register stack trace for scenarios
 */
module.exports = function () {
  event.dispatcher.on(event.test.failed, (test, err = {}) => {
    let msg = err.message || '';
    if (err instanceof AssertionFailedError) {
      msg = err.message = err.inspect();
    }
    const steps = test.steps || (test.ctx && test.ctx.test.steps);
    if (steps && steps.length) {
      let scenarioTrace = '';
      steps.reverse().forEach((step, i) => {
        const line = `- ${step.toCode()} ${step.line()}`;
        // if (step.status === 'failed') line = '' + line;
        scenarioTrace += `\n${line}`;
      });
      msg += `\n\nScenario Steps:\n${scenarioTrace}\n\n`;
    }

    if (output.level() < 3) {
      err.stack = ''; // hide internal error stack trace in non-verbose mode
    }

    if (err.stack === undefined) {
      err.stack = '';
    }

    err.stack = msg + err.stack;
    test.err = err;
  });
};