github-actions-reporter.js

// credit: 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;