k6-cucumber-steps/lib/helpers/resolvePayloadPath.js

Cucumber step definitions for running k6 performance tests.

import path from "path";
import fs from "fs";

/**
 * Resolves the full path to a payload file based on a root directory (e.g., from config)
 * and filename. Throws a clear error if file does not exist.
 *
 * @param {string} fileName - The file name (e.g., login.json)
 * @param {string} payloadDir - Directory path for payloads (absolute or relative)
 * @returns {string} - Full path to the resolved file
 */
export default function resolvePayloadPath(fileName, payloadDir = "payloads") {
  const projectRoot = path.resolve(process.cwd());
  const baseDir = path.isAbsolute(payloadDir)
    ? payloadDir
    : path.join(projectRoot, payloadDir);

  const fullPath = path.join(baseDir, fileName);

  if (!fs.existsSync(fullPath)) {
    throw new Error(`❌ Payload file not found: "${fullPath}"`);
  }

  return fullPath;
}