Setup automated unit testing

[apurbabehera]

Setup automated testing for the EverShop project:

• [x] Run unit tests manually and view the test reports in console and in file format
• [x] Run code coverage for the unit tests and view the reports in console and file format
• [x] Run unit tests and code coverage through CI pipeline and view the reports in UI
• [x] Configure pipeline to fail when any tests fail
• [x] Configure pipeline to fail when code coverage drops below a certain limit (e.g. 70%)

[sinchanav08999]

1.) Clone the evershop into the local machine. 2.) Installe the JEST framework to run the test cases for nodeJS program. 3.) Run the unit tests cases manually in VSCode using the commands " npx jest ./unit ". 4.) Run the test cases to see the code coverage using the command " npx jest --coverage ./unit ".

[apurbabehera]

1. Add code to jest.config.js reporters: [ "default", [ "jest-junit", { suiteName: "jest tests" } ] ]

2. Install jest-junit node module: npm i jest-junit

3. Run tests to create test report (junit.xml)

References: https://jestjs.io/docs/configuration#reporters-arraymodulename--modulename-options https://github.com/jest-community/jest-junit

[ManoharMP3]

To run code coverage for the unit tests

npx jest --coverage ./unit To view the reports in console and file format cd evershop\coverage\test-results

Add this code to jest.config.js file

reporters: [ 'default', ['jest-junit', { outputDirectory: './coverage/test-results', outputName: 'junit.xml' }] ], collectCoverage: true, coverageReporters: ['html', 'cobertura'], coverageDirectory: './coverage/test-results'

For code coverage, we have 2 options to view the report:

1. cobertura-coverage.xml in coverage\test-results\cobertura-coverage.xml
2. index.html in coverage\test-results\junit.xml

[ManoharMP3]

[sinchanav08999]

[sinchanav08999]

[ManoharMP3]

pipeline {
    agent any

    stages {
        stage('Checkout') {
            steps {
                // Checkout the code from the GitHub repository
                git branch: 'dev', url: 'https://github.com/ManoharMP3/evershop123.git'
            }
        }

        stage('Test') {
            steps {
                // Install jest-junit and run tests
                bat 'npm install regenerator-runtime'
                bat 'npx jest --coverage ./unit'
            }
            post {
                success {
                    echo 'Tests passed successfully!'
                }
                failure {
                    echo 'Tests failed! Please check the logs for more details.'
                    error 'Tests failed!'
                }
            }
        }
    }
    post {
        always {
            // Publish JUnit test results
            junit 'test-results/junit.xml'
            // Archive code coverage report
            archiveArtifacts 'test-results/junit.xml'
            archiveArtifacts 'test-results/cobertura-coverage.xml'
            archiveArtifacts 'test-results/index.html'

            // Calculate code coverage percentage
            script {
                def coverageXml = readFile('test-results/cobertura-coverage.xml')
                def matcher = coverageXml =~ /line-rate="([\d.]+)"/
                def coveragePercentage = matcher ? Float.parseFloat(matcher[0][1]) * 100 : null

                // Check if code coverage is below the threshold (e.g., 70%)
                if (coveragePercentage != null && coveragePercentage < 40) {
                    echo "Code coverage dropped below 70% (${coveragePercentage}%), failing the pipeline."
                    error "Code coverage dropped below 70% (${coveragePercentage}%)"
                } else {
                    echo "Code coverage (${coveragePercentage}%) meets or exceeds the threshold (70%)."
                }
            }
        }
        success {
            // Publish HTML code coverage report
            publishHTML(target: [
                allowMissing: true,
                alwaysLinkToLastBuild: true,
                keepAll: true,
                reportDir: 'test-results',
                reportFiles: 'index.html',
                reportName: 'Code Coverage Report'
            ])
        }
        failure {
            echo 'Tests failed! Please check the logs for more details.'
            error 'Tests failed!'

        }

    }

}