old_contents: /**
   * test routes
   */
  const express = require('express');
  const testUtils = require('../test/test_utils');
  
  const router = new express.Router();
  
  router.get('/', (req, res) => {
    testUtils.runTestCCC()
      .then((result) => {
        res.send({success:true, result});
      })
      .catch((err) => {
        res.status(500).send(JSON.stringify({success:false, error:JSON.stringify(err)}));
      });
  });
  
  router.get('/workflow0', (req, res) => {
    testUtils.runTestWorkflowVDE()
      .then((result) => {
        if (result.success) {
          res.send(result);
        } else {
          res.status(500).send(result);
        }
      })
      .catch((err) => {
        res.status(500).send(JSON.stringify({success:false, error:JSON.stringify(err)}));
      });
  });
  
  router.get('/workflow1', (req, res) => {
    testUtils.runTestWorkflowQMMM()
      .then((result) => {
        if (result.success) {
          res.send(result);
        } else {
          res.status(500).send(result);
        }
      })
      .catch((err) => {
        res.status(500).send(JSON.stringify({success:false, error:JSON.stringify(err)}));
      });
  });
  
  router.get('/all', (req, res) => {
    testUtils.runAllTests()
      .then((result) => {
        if (result.success) {
          res.send(result);
        } else {
          res.status(500).send(result);
        }
      })
      .catch((err) => {
        res.status(500).send(JSON.stringify({success:false, error:JSON.stringify(err)}));
      });
  });
  
  module.exports = router;
  
new_contents: /**
   * test routes
   */
  const express = require('express');
  const testUtils = require('../test/test_utils');
  
  const router = new express.Router();
  
  router.get('/', (req, res) => {
    testUtils.runTestCCC()
      .then((result) => {
        res.send({success:true, result});
      })
      .catch((err) => {
        res.status(500).send(JSON.stringify({success:false, error:err}));
      });
  });
  
  router.get('/workflow0', (req, res) => {
    testUtils.runTestWorkflowVDE()
      .then((result) => {
        if (result.success) {
          res.send(result);
        } else {
          res.status(500).send(result);
        }
      })
      .catch((err) => {
        res.status(500).send(JSON.stringify({success:false, error:err}));
      });
  });
  
  router.get('/workflow1', (req, res) => {
    testUtils.runTestWorkflowQMMM()
      .then((result) => {
        if (result.success) {
          res.send(result);
        } else {
          res.status(500).send(result);
        }
      })
      .catch((err) => {
        res.status(500).send(JSON.stringify({success:false, error:err}));
      });
  });
  
  router.get('/all', (req, res) => {
    testUtils.runAllTests()
      .then((result) => {
        if (result.success) {
          res.send(result);
        } else {
          res.status(500).send(result);
        }
      })
      .catch((err) => {
        res.status(500).send(JSON.stringify({success:false, error:err}));
      });
  });
  
  module.exports = router;
  
subject: Remove superfluous JSON.stringify