github-actions-reporter.js

//https://joelhooks.com/jest-and-github-actions
class GithubActionsReporter {
    constructor(globalConfig,options){
        this._globalConfig = globalConfig
        this._options = options
    }

    onRunComplete(contexts,results) {
        results.testResults.forEach((testResultItem)=>{
            const testFilePath = testResultItem.testFilePath

            testResultItem.testResults.forEach((result)=>{
                if(result.status !== 'failed') {
                    return
                }

                result.failureMessages.forEach((failureMessages) =>{
                    const newLine = '%0A'
          const message = failureMessages.replace(/\n/g, newLine)
          const captureGroup = message.match(/:([0-9]+):([0-9]+)/)

          if (!captureGroup) {
            console.log('Unable to extract line number from call stack')
            return
          }

          const [, line, col] = captureGroup
          console.log(
            `::error file=${testFilePath},line=${line},col=${col}::${message}`,
          )
                })
            })
        })
    }
}

module.exports = GithubActionsReporter