Publish test result fails for VSTest in Azure Devops

Question

I have added the below steps to run unit test in Azure pipelines for React UI.

1. Added a file where package.json file resides: File name:jestTrxProcessor.js.js The content:

var builder = require("jest-trx-results-processor/dist/testResultsProcessor"); 
var builder = require("jest-trx-results-processor");
 
var processor = builder({
  outputFile: "jestTestresults.trx", 
});
 
module.exports = processor;

2. In package.json I entered the below code:

 "scripts": {
....
"test": "jest"
},
devdependencies{
 ...
 "jest": "^23.4.1",
  "jest-trx-results-processor": "0.0.7",
  "jsdom": "^11.12.0"
},
"jest": {
       "testResultsProcessor": "./jestTrxProcessor.js",
    "reporters": [
"default",
[
  "jest-trx-results-processor",
  {
    "outputFile": "./jestTrxProcessor.js",
  
  }
]]},

4.In the yaml file I added the below script:

 script: |
    npm install
    npm run build
    npm install jest-trx-results-processor --save-dev
    yarn add --dev jest-trx-results-processor
    npm run test
  displayName: 'npm install and build'
  
- task: PublishTestResults@2
  inputs:
    testResultsFormat: 'VSTest'
    testResultsFiles: './jestTrxProcessor.js'
    testRunTitle: 'FrontEnd Test'

I am getting the below error once I run the pipeline in Azure Devops:

No tests found In /home/vsts/work/1/s 40 files checked. testMatch: /tests//.js?(x),**/?(.)+(spec|test).js?(x) - 0 matches testPathIgnorePatterns: /node_modules/ - 40 matches

I have searched for this folder and its no where created/exists. I am not getting what am I missing here. I am quite new to creation of yaml pipeline for react UI. Kindly help. Thank you in advance

Answer 1

No tests found In /home/vsts/work/1/s 40 files checked. testMatch: /tests//.js?(x),**/?(.)+(spec|test).js?(x) - 0 matches testPathIgnorePatterns: /node_modules/ - 40 matches

Based on the error message, the jest test is finding the xx.js file under the __tests__ folder. This is due to the default testmatch rule.

I could reproduce this issue.

To solve this issue, you need to change the following settings:

1. Change the name of the folder where the xxx.js file is located to __tests__ .

2.Edit the testResultsProcessor path in package.json.

Here is an example:

 "jest": {
     "testResultsProcessor": "./__tests__/jestTrxProcessor", 
  "reporters": [
    "default",
    [
      "jest-trx-results-processor",
      {
        "outputFile": "relative/path/to/resulting.trx"
       
      }
    ]
  ]


  }

Result: