@knapsack-pro/jest/lib/knapsack-pro-jest.js

Knapsack Pro Jest splits Jest tests across CI nodes and makes sure that tests will run in optimal time on each CI node.

#!/usr/bin/env node
import { KnapsackProCore, KnapsackProLogger, } from '@knapsack-pro/core';
import { v4 as uuidv4 } from 'uuid';
import { EnvConfig } from './env-config.js';
import { TestFilesFinder } from './test-files-finder.js';
import { JestCLI } from './jest-cli.js';
const jestImport = await import('jest');
const jest = jestImport.default ?? jestImport;
const clientName = '@knapsack-pro/jest';
const clientVersion = '9.0.0-rc.1';
const jestCLIOptions = JestCLI.argvToOptions();
const knapsackProLogger = new KnapsackProLogger();
knapsackProLogger.debug(`Jest CLI options:\n${KnapsackProLogger.objectInspect(jestCLIOptions)}`);
EnvConfig.loadEnvironmentVariables();
const projectPath = process.cwd();
const testFilesToExecute = () => TestFilesFinder.allTestFiles();
const knapsackPro = new KnapsackProCore(clientName, clientVersion, testFilesToExecute);
const onSuccess = async (queueTestFiles) => {
    const testFilePaths = queueTestFiles.map((testFile) => testFile.path);
    const jestCLICoverage = EnvConfig.coverageDirectory
        ? { coverageDirectory: `${EnvConfig.coverageDirectory}/${uuidv4()}` }
        : {};
    const { results: { success: isTestSuiteGreen, testResults }, } = await jest.runCLI({
        ...jestCLIOptions,
        ...jestCLICoverage,
        runTestsByPath: true,
        _: testFilePaths,
        $0: 'jest',
    }, [projectPath]);
    const recordedTestFiles = testResults.map(({ testFilePath, perfStats: { start, end }, }) => {
        const path = process.platform === 'win32'
            ? testFilePath.replace(`${projectPath}\\`, '').replace(/\\/g, '/')
            : testFilePath.replace(`${projectPath}/`, '');
        const timeExecutionMiliseconds = end - start;
        const timeExecution = timeExecutionMiliseconds > 0 ? timeExecutionMiliseconds / 1000 : 0.0;
        return {
            path,
            time_execution: timeExecution,
        };
    });
    return {
        recordedTestFiles,
        isTestSuiteGreen,
    };
};
const onError = () => { };
knapsackPro.runQueueMode(onSuccess, onError);