@stryker-mutator/core/dist/src/test-runner/retry-rejected-decorator.js

The extendable JavaScript mutation testing framework

import { DryRunStatus, MutantRunStatus } from '@stryker-mutator/api/test-runner';
import { errorToString } from '@stryker-mutator/util';
import log4js from 'log4js';
import { OutOfMemoryError } from '../child-proxy/out-of-memory-error.js';
import { TestRunnerDecorator } from './test-runner-decorator.js';
const ERROR_MESSAGE = 'Test runner crashed. Tried twice to restart it without any luck. Last time the error message was: ';
export const MAX_RETRIES = 2;
/**
 * Implements the retry functionality whenever an internal test runner rejects a promise.
 */
export class RetryRejectedDecorator extends TestRunnerDecorator {
    constructor() {
        super(...arguments);
        this.log = log4js.getLogger(RetryRejectedDecorator.name);
    }
    async dryRun(options) {
        const result = await this.run(() => super.dryRun(options));
        if (typeof result === 'string') {
            return {
                status: DryRunStatus.Error,
                errorMessage: result,
            };
        }
        else {
            return result;
        }
    }
    async mutantRun(options) {
        const result = await this.run(() => super.mutantRun(options));
        if (typeof result === 'string') {
            return {
                status: MutantRunStatus.Error,
                errorMessage: result,
            };
        }
        else {
            return result;
        }
    }
    async run(actRun, attemptsLeft = MAX_RETRIES, lastError) {
        if (attemptsLeft > 0) {
            try {
                return await actRun();
            }
            catch (error) {
                if (error instanceof OutOfMemoryError) {
                    this.log.info("Test runner process [%s] ran out of memory. You probably have a memory leak in your tests. Don't worry, Stryker will restart the process, but you might want to investigate this later, because this decreases performance.", error.pid);
                }
                await this.recover();
                return this.run(actRun, attemptsLeft - 1, error);
            }
        }
        else {
            await this.recover();
            return `${ERROR_MESSAGE}${errorToString(lastError)}`;
        }
    }
}
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