How to use cleanStderr method in Jest

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index.js

Source:index.js Github

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...121 assert(rest.length === 0);122 if (content === null) {123 assert(expectedStderr === null);124 assert(125 cleanStderr(stderrLogs).length === 0,126 util.inspect({ stderrLogs })127 );128 return;129 }130 assert(content.constructor === String);131 expectedStderr = expectedStderr || [];132 expectedStderr.push(content);133 };134 if (debugMode) {135 console.log(chalk.bold.blue("[DEBUG-MODE] Enabled."));136 }137 const log_collector = new LogCollector({ debugMode });138 log_collector.enable();139 const { stdoutLogs, stderrLogs } = log_collector;140 let testFailure;141 try {142 await testFn({ ...testArgs, assertStderr });143 } catch (err) {144 testFailure = err;145 } finally {146 log_collector.disable();147 }148 try {149 if (testFailure) throw testFailure;150 await checkStderr({ expectedStderr, stderrLogs });151 if (!debugMode) {152 await checkStdout(stdoutLogs);153 }154 } catch (err) {155 log_collector.flush();156 console.error(err);157 console.log(colorError(symbolError + "Failed test: " + testName));158 throw new Error("Tests failed.");159 }160 /​/​ Delete all cookies161 await testArgs.browserEval(() => {162 window.deleteAllCookies();163 assert(document.cookie === "");164 });165 console.log(symbolSuccess + testName);166 return;167}168async function checkStderr({ expectedStderr, stderrLogs }) {169 /​/​ Express seems to rethrow errors asyncronously; we need to wait for express to rethrow errors.170 await new Promise((r) => setTimeout(r, 0));171 stderrLogs = cleanStderr(stderrLogs);172 const stderrLogsLength = stderrLogs.length;173 checkIfErrorIsExpected(stderrLogs);174 stderrLogs.forEach(checkErrorFormat);175 assert(expectedStderr === null || expectedStderr.length >= 1);176 if (expectedStderr === null) {177 assert(178 stderrLogsLength === 0,179 util.inspect({180 expectedLength: 0,181 stderrLogsLength,182 stderrLogs,183 })184 );185 return;186 }187 assert(stderrLogs.length === stderrLogsLength);188 assert(189 stderrLogs.length === expectedStderr.length,190 util.inspect({ stderrLogs, expectedStderr })191 );192 stderrLogs.forEach((stderrLog, i) => {193 const stderrContent = expectedStderr[i];194 assert(195 stderrLog.includes(stderrContent),196 util.inspect({197 expectedStderr: stderrContent,198 actualStderr: stderrLog,199 })200 );201 });202 return;203 function checkErrorFormat(stderrLog) {204 assert(stderrLog.constructor === String);205 const [firstLine, ...errorStackLines] = stderrLog.split("\n");206 /​/​ Always start with a single-line error message207 if (208 !firstLine.includes("[Telefunc][Wrong Usage] ") &&209 !firstLine.includes("[EXPECTED_ERROR]")210 ) {211 console.log(stderrLog);212 assert(false);213 }214 /​/​ Always show a stack trace215 if (errorStackLines.length <= 5) {216 console.log(stderrLog);217 assert(false);218 }219 /​/​ Rest is stack trace220 errorStackLines.forEach((errStackLine) => {221 if (errStackLine === "") {222 return;223 }224 if (stripAnsi(errStackLine).startsWith(" at")) {225 return;226 }227 console.log("==Error:");228 console.log(stderrLog);229 console.log("==Line:");230 console.log(errStackLine);231 assert(false);232 });233 /​/​ Stack trace should never show @brillout/​assert trace234 assert(!stripAnsi(stderrLog).includes("@brillout/​assert"));235 assert(!stripAnsi(stderrLog).includes("@brillout/​libassert"));236 }237 function checkIfErrorIsExpected(stderrLogs) {238 stderrLogs.forEach((stderrLog) => {239 /​/​ No test should throw an internal errors240 /​/​ => re-throw, interupt the test run, and show the error241 if (stderrLog.includes("[Internal Error]")) {242 throw stderrLog;243 }244 /​/​ It is expected that test can throw a [Wrong Usage] or245 /​/​ an error constructed by the test itself ([EXPECTED_ERROR])246 if (247 stderrLog.includes("[Telefunc][Wrong Usage]") ||248 stderrLog.includes("[EXPECTED_ERROR]")249 ) {250 return;251 }252 /​/​ It seems like these pesting `JSHandle@error` can be circumvented253 /​/​ by logging `err.stack` instead of `err`.254 if (stderrLog.includes("JSHandle@error")) {255 console.log(stderrLog);256 assert(257 false,258 "Make sure to `console.error(err.stack)` instead of `console.error(err)` in `browserEval`"259 );260 }261 /​/​ Any other error are unexpected262 console.log("Unexpected error type:");263 console.log(stderrLog);264 assert(false, "Unexpected kind of error.");265 });266 }267}268async function checkStdout(stdoutLogs) {269 stdoutLogs = cleanStdout(stdoutLogs);270 assert(stdoutLogs.length === 0);271}272function cleanStdout(stdoutLogs) {273 return removeHiddenLog(stdoutLogs);274}275function cleanStderr(stderrLogs) {276 return removeHiddenLog(removeNetworkErrorLogs(stderrLogs));277}278function removeHiddenLog(stdLogs) {279 return stdLogs.filter(280 (log) =>281 !log ||282 !log.includes(283 /​/​ Puppeteer "hidden" log (never saw such hidden log before; I don't know how and why this exists)284 "This conditional evaluates to true if and only if there was an error"285 )286 );287}288function removeNetworkErrorLogs(stdLogs) {289 return stdLogs.filter(...

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test.js

Source:test.js Github

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1'use strict'2/​* globals describe beforeEach it afterEach */​3const chai = require('chai')4chai.use(require('chai-as-promised'))5const expect = chai.expect6const nock = require('nock')7nock.disableNetConnect()8const mock = require('mock-fs')9const rewire = require('rewire')10const fs = require('fs')11const path = require('path')12const co = require('co')13const stdin = require('mock-stdin').stdin()14/​/​ heroku stuff15const cli = require('heroku-cli-util')16const commands = require('./​index').commands17/​/​ things I'm testing18const merge = require('./​util/​merge')19const file = rewire('./​util/​file')20const header = file.__get__('header')21/​/​ HELPERS22const fetchCMD = name => {23 return commands.find(c => c.command === name)24}25/​/​ heroku-cli err output depends on terminal width, so we have to standardize26const cleanStdErr = s => {27 return s.replace(/​\n|▸| {2,}/​g, '').trim()28}29const setup = () => {30 cli.raiseErrors = true31 cli.exit.mock()32}33const defaultFS = () => {34 /​/​ this is so I can setup without affecting other tests35 return {36 '.env': fixtures.local_file,37 windows: fixtures.windows_file,38 'other.txt': fixtures.local_file,39 dnt: mock.file({ mode: '000' }),40 multiline: fixtures.multiline_file,41 tricky_multiline: fixtures.tricky_multiline_file,42 expanded: fixtures.expanded_file43 }44}45/​/​ https:/​/​glebbahmutov.com/​blog/​unit-testing-cli-programs/​46const mockInput = i => {47 process.nextTick(() => {48 stdin.send(i)49 })50}51/​/​ val must be true or false52const mockSettingsFile = val => {53 const location = path.join(process.env.HOME, '.heroku_config_settings.json')54 fs.writeFileSync(location, fixtures[`settings_obj_${val}`])55}56const nockFetchConfig = appName => {57 appName = appName || 'test'58 nock('https:/​/​api.heroku.com:443')59 .get(`/​apps/​${appName}/​config-vars`)60 .reply(200, fixtures.remote_obj)61}62/​/​ FIXTURES63const fixtures = {64 remote_obj: {65 NODE_ENV: 'pRoDuction',66 NAME: 'david',67 SOURCE: 'remote'68 },69 local_obj: {70 NODE_ENV: 'test',71 SOURCE: 'local',72 DB_STRING: 'mongo:/​/​blah@thing.mongo.thing.com:4567'73 },74 remote_win_obj: {75 NODE_ENV: 'pRoDuction',76 SOURCE: 'remote',77 DB_STRING: 'mongo:/​/​blah@thing.mongo.thing.com:4567',78 NAME: 'david'79 },80 local_win_obj: {81 NODE_ENV: 'test',82 SOURCE: 'local',83 DB_STRING: 'mongo:/​/​blah@thing.mongo.thing.com:4567',84 NAME: 'david'85 },86 remote_cleaned_obj: {87 NODE_ENV: 'pRoDuction',88 SOURCE: 'remote',89 DB_STRING: 'mongo:/​/​blah@thing.mongo.thing.com:4567'90 },91 multiline_obj: {92 SECRET_KEY:93 '-----BEGIN RSA PRIVATE KEY-----\nMIIrandomtext\nmorerandomtext\n-----END RSA PRIVATE KEY-----',94 OTHER_KEY: 'blahblah',95 ITS_GONNA_BE: 'legend wait for it...\ndary'96 },97 tricky_multiline_obj: {98 SECRET_KEY:99 '-----BEGIN RSA PRIVATE KEY-----\nMIIrandomtext\nmorerandomtext==\n-----END RSA PRIVATE KEY-----',100 OTHER_KEY: 'blahblah',101 ITS_GONNA_BE: 'legend wait for it...\ndary'102 },103 expanded_obj: {104 'na-me': 'david',105 'integration.url': 'https:/​/​google.com'106 },107 local_file:108 '#comment\nNODE_ENV= test\nSOURCE =local\nSOURCE = local\nDB_STRING="mongo:/​/​blah@thing.mongo.thing.com:4567"\n',109 windows_file:110 '#comment\r\nNODE_ENV= test\r\nSOURCE =local\r\nSOURCE = local\r\nDB_STRING=mongo:/​/​blah@thing.mongo.thing.com:4567\r\n',111 merged_local_file:112 header +113 'DB_STRING="mongo:/​/​blah@thing.mongo.thing.com:4567"\nNAME="david"\nNODE_ENV="test"\nSOURCE="local"\n',114 multiline_file:115 'SECRET_KEY="-----BEGIN RSA PRIVATE KEY-----\nMIIrandomtext\n\nmorerandomtext\n-----END RSA PRIVATE KEY-----"\nOTHER_KEY=blahblah\nITS_GONNA_BE="legend wait for it...\n# you better not be lactose intolerant cause it\'s\ndary"',116 tricky_multiline_file:117 'SECRET_KEY="-----BEGIN RSA PRIVATE KEY-----\nMIIrandomtext\n\nmorerandomtext==\n-----END RSA PRIVATE KEY-----"\nOTHER_KEY=blahblah\nITS_GONNA_BE="legend wait for it...\n# you better not be lactose intolerant cause it\'s\ndary"',118 expanded_file: 'na-me=david\nintegration.url=https:/​/​google.com\n',119 /​/​ test both quote styles120 sample_file:121 header +122 'export PIZZA="Abo\'s"\nNAME="david"\n\n#this is a comment!\nCITY=boulder\n\n\n',123 clean_sample_file: header + 'CITY="boulder"\nNAME="david"\nPIZZA="Abo\'s"\n',124 naked_clean_sample_file: header + "CITY=boulder\nNAME=david\nPIZZA=Abo's\n",125 sample_obj: { NAME: 'david', CITY: 'boulder', PIZZA: "Abo's" },126 settings_obj_true: JSON.stringify({ blah: true }),127 settings_obj_false: JSON.stringify({ blah: false })128}129/​/​ TESTS130setup()131describe('Merging', () => {132 it('should overwrite local with remote', () => {133 expect(merge(fixtures.local_obj, fixtures.remote_obj, {})).to.deep.equal(134 fixtures.remote_win_obj135 )136 })137 it('should overwrite remote with local', () => {138 expect(merge(fixtures.remote_obj, fixtures.local_obj, {})).to.deep.equal(139 fixtures.local_win_obj140 )141 })142 it('should overwrite local with remote w/​override', () => {143 expect(144 merge(fixtures.remote_obj, fixtures.local_obj, { overwrite: true })145 ).to.deep.equal(fixtures.remote_win_obj)146 })147 it('should overwrite remote with local w/​override', () => {148 expect(149 merge(fixtures.local_obj, fixtures.remote_obj, { overwrite: true })150 ).to.deep.equal(fixtures.local_win_obj)151 })152})153describe('Reading', () => {154 beforeEach(() => {155 mock(defaultFS())156 cli.mockConsole()157 })158 it('should return empty object from non-existant file', () => {159 return expect(file.read('asdf')).to.eventually.deep.equal({})160 })161 it('should read a local file', () => {162 return expect(file.read('.env')).to.eventually.deep.equal(163 fixtures.local_obj164 )165 })166 it('should read a local windows file', () => {167 return expect(file.read('windows')).to.eventually.deep.equal(168 fixtures.local_obj169 )170 })171 it('should read multiline values (and multi-multiline values)', () => {172 return expect(file.read('multiline')).to.eventually.deep.equal(173 fixtures.multiline_obj174 )175 })176 it('should read multiline values (and multi-multiline values)', () => {177 return expect(file.read('tricky_multiline')).to.eventually.deep.equal(178 fixtures.tricky_multiline_obj179 )180 })181 it('should warn about duplicate keys', () => {182 return file.read('.env').then(() => {183 expect(cleanStdErr(cli.stderr)).to.include(184 '"SOURCE" is in env file twice'185 )186 })187 })188 it('should skip warnings in quiet mode', () => {189 return file.read('.env', { quiet: true }).then(() => {190 expect(cli.stderr).to.equal('')191 })192 })193 it('should warn when it hits a malformed line', () => {194 return file.read('expanded').then(() => {195 expect(cleanStdErr(cli.stderr)).to.include('unable to parse line')196 })197 })198 it('should read expanded files', () => {199 return expect(200 file.read('expanded', { expanded: true })201 ).to.eventually.deep.equal(fixtures.expanded_obj)202 })203 afterEach(() => {204 mock.restore()205 cli.mockConsole(false)206 })207})208describe('Writing', () => {209 beforeEach(() => {210 cli.mockConsole()211 mock(defaultFS())212 })213 it('should fail to write to a file it lacks permissions for', () => {214 return expect(file.write({}, 'dnt')).to.be.rejectedWith(Error)215 })216 const fname = '.env'217 it('should successfully write a file, louldly', () => {218 return file.write(fixtures.sample_obj).then(() => {219 const res = fs.readFileSync(fname, 'utf-8')220 expect(res).to.equal(fixtures.clean_sample_file)221 expect(cli.stdout).to.not.equal('')222 })223 })224 it('should successfully write a file, quietly', () => {225 /​/​ need to pass all params if i'm passing quiet mode226 return file.write(fixtures.sample_obj, fname, { quiet: true }).then(() => {227 const res = fs.readFileSync(fname, 'utf-8')228 expect(res).to.equal(fixtures.clean_sample_file)229 expect(cli.stdout).to.equal('')230 })231 })232 afterEach(() => {233 mock.restore()234 cli.mockConsole(false)235 })236})237describe('Transforming', () => {238 it('should decode files correctly', () => {239 expect(240 file.__get__('objFromFileFormat')(fixtures.sample_file)241 ).to.deep.equal(fixtures.sample_obj)242 })243 it('should encode file correctly', () => {244 expect(file.__get__('objToFileFormat')(fixtures.sample_obj)).to.equal(245 fixtures.clean_sample_file246 )247 })248 it('should read unquoted files', () => {249 expect(250 file.__get__('objFromFileFormat')(fixtures.naked_clean_sample_file)251 ).to.deep.equal(fixtures.sample_obj)252 })253 it('should write unquoted files', () => {254 expect(255 file.__get__('objToFileFormat')(fixtures.sample_obj, { unquoted: true })256 ).to.equal(fixtures.naked_clean_sample_file)257 })258})259describe('Checking for Prod', () => {260 beforeEach(() => {261 cli.mockConsole()262 })263 it('should delete prod when prompted', () => {264 mockInput('d')265 return co(file.shouldDeleteProd({ app: 'test' })).then(shouldDelete => {266 expect(shouldDelete).to.equal(true)267 })268 })269 it('should ignore prod when prompted', () => {270 mockInput('i')271 return co(file.shouldDeleteProd({ app: 'test' })).then(shouldDelete => {272 expect(shouldDelete).to.equal(false)273 })274 })275 it('should read a true settings file if able', () => {276 const testMode = true277 mock()278 mockSettingsFile(testMode)279 return co(file.shouldDeleteProd({ app: 'blah' })).then(shouldDelete => {280 expect(shouldDelete).to.equal(testMode)281 })282 })283 it('should read a false settings file if able', () => {284 const testMode = false285 mock()286 mockSettingsFile(testMode)287 return co(file.shouldDeleteProd({ app: 'blah' })).then(shouldDelete => {288 expect(shouldDelete).to.equal(testMode)289 })290 })291 afterEach(() => {292 cli.mockConsole(false)293 mock.restore()294 })295})296describe.skip('Pushing', () => {297 beforeEach(() => {298 cli.mockConsole()299 mock(defaultFS())300 })301 const cmd = fetchCMD('push')302 const fname = 'other.txt'303 it('should correctly push configs w/​ flags', () => {304 nockFetchConfig()305 /​/​ this will fail if we don't pass the correct body, as intended306 nock('https:/​/​api.heroku.com:443')307 .patch('/​apps/​test/​config-vars', fixtures.remote_win_obj)308 .reply(200, fixtures.remote_win_obj)309 return cmd310 .run({ flags: { file: fname, quiet: true }, app: 'test' })311 .then(() => {312 expect(nock.isDone()).to.equal(true)313 expect(cli.stdout).to.equal('')314 })315 })316 it('should correctly push null values for unused configs', () => {317 nockFetchConfig()318 /​/​ this will fail if we don't pass the correct body, as intended319 nock('https:/​/​api.heroku.com:443')320 .patch('/​apps/​test/​config-vars', fixtures.remote_win_obj)321 .reply(200, fixtures.remote_win_obj)322 /​/​ delete call323 nock('https:/​/​api.heroku.com:443')324 .patch('/​apps/​test/​config-vars', { NAME: null })325 .reply(200, fixtures.remote_cleaned_obj)326 return cmd.run({ flags: { clean: true }, app: 'test' }).then(() => {327 expect(nock.isDone()).to.equal(true)328 })329 })330 afterEach(() => {331 mock.restore()332 cli.mockConsole(false)333 })334})335/​/​ the following tests are broken because mock-fs v4 doesn't support lazy336/​/​ requires and mock-fs v3 only supports up to node 7. What I need is a mocked337/​/​ filesystem that uses the real fs for requires, even when mocked338describe.skip('Pulling', () => {339 beforeEach(() => {340 cli.mockConsole()341 mock(defaultFS())342 })343 const cmd = fetchCMD('pull')344 it('should correctly pull configs', () => {345 const fname = 'other.txt'346 nockFetchConfig()347 return cmd.run({ flags: { file: fname }, app: 'test' }).then(() => {348 const res = fs.readFileSync(fname, 'utf-8')349 expect(res).to.include(fixtures.merged_local_file)350 })351 })352 describe('skipping production value', () => {353 const fname = '.env'354 const appName = 'blah'355 it('should delete value', () => {356 mockSettingsFile(true)357 nockFetchConfig(appName)358 return cmd.run({ flags: { overwrite: true }, app: appName }).then(() => {359 const res = fs.readFileSync(fname, 'utf-8')360 expect(res).not.to.include('pRoDuction')361 })362 })363 it('should not delete value', () => {364 mockSettingsFile(false)365 nockFetchConfig(appName)366 return cmd.run({ flags: { overwrite: true }, app: appName }).then(() => {367 const res = fs.readFileSync(fname, 'utf-8')368 expect(res).to.include('pRoDuction')369 })370 })371 })372 afterEach(() => {373 mock.restore()374 cli.mockConsole(false)375 })...

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database.js

Source:database.js Github

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1import mysql from 'promise-mysql'2import { version } from 'react'3import { cmdPromise } from './​utils'4import { isEmpty } from './​utils'5/​/​ CLI Resources:6/​/​ https:/​/​dev.mysql.com/​doc/​refman/​8.0/​en/​mysql-command-options.html7/​/​ https:/​/​mariadb.com/​kb/​en/​library/​mysqldump/​8/​/​ A better solution than dropping and recreating the db.9/​/​ It also avoids errors when run on an empty database.10/​/​ https:/​/​stackoverflow.com/​a/​1862554511const dropDbQuery = `SET FOREIGN_KEY_CHECKS = 0;SET GROUP_CONCAT_MAX_LEN=32768;SET @tables = NULL;SELECT GROUP_CONCAT('\`', table_name, '\`') INTO @tables FROM information_schema.tables WHERE table_schema = (SELECT DATABASE()); SELECT IFNULL(@tables,'dummy') INTO @tables; SET @tables = CONCAT('DROP TABLE IF EXISTS ', @tables); PREPARE stmt FROM @tables; EXECUTE stmt; DEALLOCATE PREPARE stmt; SET FOREIGN_KEY_CHECKS = 1;`12const importDbQuery = ({13 host = 'localhost',14 port = 3306,15 user,16 password,17 database,18 importFile,19}) =>20 `mysql --host='${host}' --port='${21 !isEmpty(port) ? port : 330622 }' --user='${user}' --password='${password}' ${database} < ${importFile};`23/​/​ Clear out the tables in a database24const doDropAllDbTables = async config => {25 let errorMessage26 const defaultConfig = {27 multipleStatements: true,28 host: null,29 user: null,30 password: null,31 database: null,32 }33 /​/​ Create the connection to the local database34 const conn = await mysql35 .createConnection({ ...defaultConfig, ...config })36 .catch(error => (errorMessage = error))37 if (errorMessage) return new Error(errorMessage)38 conn.query(dropDbQuery)39 conn.end()40}41const doImportDb = async config => {42 let errorMessage43 await cmdPromise(importDbQuery(config)).catch(e => (errorMessage = e))44 if (errorMessage) return new Error(errorMessage)45}46const doLocalDbDump = async config => {47 let errorMessage48 config = Object.assign(config, {49 isMysql8: await isMysql8({50 localCmd:cmdPromise51 })52 })53 await cmdPromise(getDbDumpZipCommands(config)).catch(54 e => (errorMessage = e)55 )56 if (errorMessage) return new Error(errorMessage)57}58const getDbDumpZipCommands = ({59 host = 'localhost',60 port = 3306,61 user,62 password,63 database,64 gzipFilePath,65 isMysql8 = false66}) =>67 /​/​ Dump and zip the db - this can make it around 9 times smaller68 `mysqldump --host='${host}' --port='${port}' --user='${user}' --password='${password}' --single-transaction --lock-tables=false --no-tablespaces ${isMysql8?'--column-statistics=0':''} ${database} | gzip > '${gzipFilePath}'`69const checkForDb = async ({ dbFilePath, sshConn }) => {70 let errorMessage71 /​/​ Check the local database file has been uploaded72 await sshConn73 .execCommand(`test -f ${dbFilePath} && echo "true" || echo "false"`)74 .then(({ stdout, stderr }) => {75 /​/​ If error running command76 if (stderr)77 return (errorMessage = `There was an issue checking the presence of the remote db dump\n\n${stderr}`)78 /​/​ If db dump doesn't exist79 if (stdout && String(stdout).includes('false'))80 return (errorMessage = `The remote db dump wasn't found`)81 })82 if (errorMessage) return new Error(errorMessage)83 return84}85const unzipDb = async ({ dbFilePath, sshConn }) => {86 let errorMessage87 /​/​ -d : decompress /​ -f : force overwrite any existing file88 await sshConn89 .execCommand(`gzip -df '${dbFilePath}'`)90 .then(({ stdout, stderr }) => {91 /​/​ If error running command92 if (stderr)93 return (errorMessage = `There was an issue checking the presence of the remote db dump\n\n${stderr}`)94 /​/​ If db dump doesn't exist95 if (stdout && String(stdout).includes('false'))96 return (errorMessage = `The remote db dump wasn't found`)97 })98 if (errorMessage) return new Error(errorMessage)99 return100}101/​/​ Drop the tables in the remote database to prepare for import102const clearDb = async ({ remoteEnv, sshConn }) => {103 let errorMessage104 const connectSql = `mysql --host="${remoteEnv.DB_SERVER}" --user="${105 remoteEnv.DB_USER106 }" --port="${remoteEnv.DB_PORT}" --database="${107 remoteEnv.DB_DATABASE108 }" --password="${remoteEnv.DB_PASSWORD}"`109 await sshConn110 .execCommand(111 `${connectSql} -Nse 'show tables' ${112 remoteEnv.DB_DATABASE113 } | while read table; do ${connectSql} -e "SET FOREIGN_KEY_CHECKS = 0; truncate table $table; SET FOREIGN_KEY_CHECKS = 1;" ${114 remoteEnv.DB_DATABASE115 }; done`116 )117 .then(({ stdout, stderr }) => {118 const cleanMessage = message =>119 String(message)120 .replace(121 /​/​ Suppress this warning - it's not as bad as it sounds122 /​mysql: \[Warning] Using a password on the command line interface can be insecure./​g,123 ''124 )125 .trim()126 const cleanStderr = stderr ? cleanMessage(stderr) : false127 if (cleanStderr)128 errorMessage = `There was an issue attempting to clear the remote database\n\n${cleanStderr}`129 })130 if (errorMessage) return new Error(errorMessage)131 return132}133const importDb = async ({ remoteEnv, dbFilePath, sshConn }) => {134 let errorMessage135 /​/​ Import the local database into the remote with mysql136 await sshConn137 .execCommand(138 importDbQuery({139 host: remoteEnv.DB_SERVER,140 port: remoteEnv.DB_PORT,141 user: remoteEnv.DB_USER,142 password: remoteEnv.DB_PASSWORD,143 database: remoteEnv.DB_DATABASE,144 importFile: dbFilePath,145 })146 )147 .then(({ stdout, stderr }) => {148 const cleanMessage = message =>149 String(message)150 .replace(151 /​/​ Suppress this warning - it's not as bad as it sounds152 /​mysql: \[Warning] Using a password on the command line interface can be insecure./​g,153 ''154 )155 .trim()156 const cleanStderr = stderr ? cleanMessage(stderr) : false157 if (cleanStderr)158 errorMessage = `There was an issue importing the local db dump on the remote server\n\n${cleanStderr}`159 })160 if (errorMessage) return new Error(errorMessage)161 return162}163/​/​ Cleanup the database dump file on the remote164const removeDb = async ({ dbFilePath, sshConn }) => {165 let errorMessage166 /​/​ Import the local database into the remote with mysql167 await sshConn.execCommand(`rm ${dbFilePath}`).then(({ stdout, stderr }) => {168 /​/​ If error running command169 if (stderr)170 errorMessage = `There was an issue importing the local db dump on the remote server\n\n${stderr}`171 })172 if (errorMessage) return new Error(errorMessage)173 return174}175/​/​ Check the version of mysqldump (mysql)176/​/​ cmd can be either177/​/​ - sshConn(remote)178/​/​ or179/​/​ - localCmd(local)180const isMysql8 = async ({sshConn, localCmd}) => {181 if (sshConn) {182 let output = "", errorMessage = "";183 await sshConn.execCommand(`mysqldump --version`).then(({ stdout, stderr }) => {184 output = stdout;185 /​/​ If error running command186 if (stderr)187 errorMessage = `There was an issue checking mysql version\n\n${stderr}`188 })189 if (output.indexOf("Ver 8") !== -1) {190 return true;191 }192 return false;193 } else if (localCmd) {194 let output = "", errorMessage = "";195 await localCmd(`mysqldump --version`).then(stdout => {196 output = stdout;197 }).catch(stderr => {198 /​/​ If error running command199 if (stderr)200 errorMessage = `There was an issue checking mysql version\n\n${stderr}`201 }) 202 if (output.indexOf("Ver 8") !== -1) {203 return true;204 }205 return false;206 }207 return false;208}209export {210 getDbDumpZipCommands,211 doDropAllDbTables,212 dropDbQuery,213 doImportDb,214 doLocalDbDump,215 importDbQuery,216 checkForDb,217 unzipDb,218 clearDb,219 importDb,220 removeDb,221 isMysql8,...

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globals.test.js

Source:globals.test.js Github

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...17 writeFiles,18} from '../​Utils';19const DIR = path.resolve(os.tmpdir(), 'global-variables.test');20const TEST_DIR = path.resolve(DIR, '__tests__');21function cleanStderr(stderr) {22 const {rest} = extractSummary(stderr);23 return rest.replace(/​.*(jest-jasmine2).*\n/​g, '');24}25beforeEach(() => {26 cleanup(DIR);27 createEmptyPackage(DIR);28});29afterAll(() => cleanup(DIR));30test('basic test constructs', () => {31 const filename = 'basic.test-constructs.test.js';32 const content = `33 it('it', () => {});34 test('test', () => {});35 describe('describe', () => {36 it('it', () => {});37 test('test', () => {});38 });39 `;40 writeFiles(TEST_DIR, {[filename]: content});41 const {stderr, status} = runJest(DIR);42 expect(status).toBe(0);43 const {summary, rest} = extractSummary(stderr);44 expect(rest).toMatchSnapshot();45 expect(summary).toMatchSnapshot();46});47test('skips', () => {48 const filename = 'skips-constructs.test.js';49 const content = `50 it('it', () => {});51 xtest('xtest', () => {});52 xit('xit', () => {});53 it.skip('it.skip', () => {});54 test.skip('test.skip', () => {});55 xdescribe('xdescribe', () => {56 it('it', () => {});57 test('test', () => {});58 });59 describe.skip('describe.skip', () => {60 test('test', () => {});61 describe('describe', () => {62 test('test', () => {});63 });64 });65 `;66 writeFiles(TEST_DIR, {[filename]: content});67 const {stderr, status} = runJest(DIR);68 const {summary, rest} = extractSummary(stderr);69 expect(rest).toMatchSnapshot();70 expect(summary).toMatchSnapshot();71 expect(status).toBe(0);72});73test('only', () => {74 const filename = 'only-constructs.test.js';75 const content = `76 it('it', () => {});77 test.only('test.only', () => {});78 it.only('it.only', () => {});79 fit('fit', () => {});80 fdescribe('fdescribe', () => {81 it('it', () => {});82 test('test', () => {});83 });84 describe.only('describe.only', () => {85 test('test', () => {});86 describe('describe', () => {87 test('test', () => {});88 });89 });90 `;91 writeFiles(TEST_DIR, {[filename]: content});92 const {stderr, status} = runJest(DIR);93 expect(status).toBe(0);94 const {summary, rest} = extractSummary(stderr);95 expect(rest).toMatchSnapshot();96 expect(summary).toMatchSnapshot();97});98test('cannot have describe with no implementation', () => {99 const filename = 'only-constructs.test.js';100 const content = `101 describe('describe, no implementation');102 `;103 writeFiles(TEST_DIR, {[filename]: content});104 const {stderr, status} = runJest(DIR);105 expect(status).toBe(1);106 const rest = cleanStderr(stderr);107 const {summary} = extractSummary(stderr);108 expect(rest).toMatchSnapshot();109 expect(summary).toMatchSnapshot();110});111test('cannot test with no implementation', () => {112 const filename = 'only-constructs.test.js';113 const content = `114 it('it', () => {});115 it('it, no implementation');116 test('test, no implementation');117 `;118 writeFiles(TEST_DIR, {[filename]: content});119 const {stderr, status} = runJest(DIR);120 expect(status).toBe(1);121 const {summary} = extractSummary(stderr);122 expect(cleanStderr(stderr)).toMatchSnapshot();123 expect(summary).toMatchSnapshot();124});125test('skips with expand arg', () => {126 const filename = 'skips-constructs.test.js';127 const content = `128 it('it', () => {});129 xtest('xtest', () => {});130 xit('xit', () => {});131 it.skip('it.skip', () => {});132 test.skip('test.skip', () => {});133 xdescribe('xdescribe', () => {134 it('it', () => {});135 test('test', () => {});136 });137 describe.skip('describe.skip', () => {138 test('test', () => {});139 describe('describe', () => {140 test('test', () => {});141 });142 });143 `;144 writeFiles(TEST_DIR, {[filename]: content});145 const {stderr, status} = runJest(DIR, ['--expand']);146 expect(status).toBe(0);147 const {summary, rest} = extractSummary(stderr);148 expect(rest).toMatchSnapshot();149 expect(summary).toMatchSnapshot();150});151test('only with expand arg', () => {152 const filename = 'only-constructs.test.js';153 const content = `154 it('it', () => {});155 test.only('test.only', () => {});156 it.only('it.only', () => {});157 fit('fit', () => {});158 fdescribe('fdescribe', () => {159 it('it', () => {});160 test('test', () => {});161 });162 describe.only('describe.only', () => {163 test('test', () => {});164 describe('describe', () => {165 test('test', () => {});166 });167 });168 `;169 writeFiles(TEST_DIR, {[filename]: content});170 const {stderr, status} = runJest(DIR, ['--expand']);171 expect(status).toBe(0);172 const {summary, rest} = extractSummary(stderr);173 expect(rest).toMatchSnapshot();174 expect(summary).toMatchSnapshot();175});176test('cannot test with no implementation with expand arg', () => {177 const filename = 'only-constructs.test.js';178 const content = `179 it('it', () => {});180 it('it, no implementation');181 test('test, no implementation');182 `;183 writeFiles(TEST_DIR, {[filename]: content});184 const {stderr, status} = runJest(DIR, ['--expand']);185 expect(status).toBe(1);186 const {summary} = extractSummary(stderr);187 expect(cleanStderr(stderr)).toMatchSnapshot();188 expect(summary).toMatchSnapshot();189});190test('function as descriptor', () => {191 const filename = 'function-as-descriptor.test.js';192 const content = `193 function Foo() {}194 describe(Foo, () => {195 it('it', () => {});196 });197 `;198 writeFiles(TEST_DIR, {[filename]: content});199 const {stderr, status} = runJest(DIR);200 expect(status).toBe(0);201 const {summary, rest} = extractSummary(stderr);...

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failures.test.js

Source:failures.test.js Github

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...11import runJest from '../​runJest';12import {wrap} from 'jest-snapshot-serializer-raw';13const dir = path.resolve(__dirname, '../​failures');14const normalizeDots = text => text.replace(/​\.{1,}$/​gm, '.');15function cleanStderr(stderr) {16 const {rest} = extractSummary(stderr);17 return rest18 .replace(/​.*(jest-jasmine2|jest-circus).*\n/​g, '')19 .replace(new RegExp('Failed: Object {', 'g'), 'thrown: Object {');20}21test('not throwing Error objects', () => {22 let stderr;23 stderr = runJest(dir, ['throwNumber.test.js']).stderr;24 expect(wrap(cleanStderr(stderr))).toMatchSnapshot();25 stderr = runJest(dir, ['throwString.test.js']).stderr;26 expect(wrap(cleanStderr(stderr))).toMatchSnapshot();27 stderr = runJest(dir, ['throwObject.test.js']).stderr;28 expect(wrap(cleanStderr(stderr))).toMatchSnapshot();29 stderr = runJest(dir, ['assertionCount.test.js']).stderr;30 expect(wrap(cleanStderr(stderr))).toMatchSnapshot();31 stderr = runJest(dir, ['duringTests.test.js']).stderr;32 expect(wrap(cleanStderr(stderr))).toMatchSnapshot();33});34test('works with node assert', () => {35 const nodeMajorVersion = Number(process.versions.node.split('.')[0]);36 const {stderr} = runJest(dir, ['assertionError.test.js']);37 let summary = normalizeDots(cleanStderr(stderr));38 /​/​ Node 9 started to include the error for `doesNotThrow`39 /​/​ https:/​/​github.com/​nodejs/​node/​pull/​1216740 if (nodeMajorVersion >= 9) {41 expect(summary).toContain(`42 assert.doesNotThrow(function)43 Expected the function not to throw an error.44 Instead, it threw:45 [Error: err!]46 Message:47 Got unwanted exception.48`);49 expect(summary).toContain(`50 69 | 51 70 | test('assert.doesNotThrow', () => {52 > 71 | assert.doesNotThrow(() => {53 | ^54 72 | throw Error('err!');55 73 | });56 74 | });57 at Object.doesNotThrow (__tests__/​assertionError.test.js:71:10)58`);59 const commonErrorMessage = `Message:60 Got unwanted exception.61`;62 if (nodeMajorVersion === 9) {63 const specificErrorMessage = `Message:64 Got unwanted exception.65 err!66`;67 expect(summary).toContain(specificErrorMessage);68 summary = summary.replace(specificErrorMessage, commonErrorMessage);69 } else {70 const specificErrorMessage = `Message:71 Got unwanted exception.72 Actual message: "err!"73`;74 expect(summary).toContain(specificErrorMessage);75 summary = summary.replace(specificErrorMessage, commonErrorMessage);76 }77 }78 if (nodeMajorVersion >= 10) {79 const ifErrorMessage = `80 assert.ifError(received, expected)81 Expected value ifError to:82 null83 Received:84 185 Message:86 ifError got unwanted exception: 187 Difference:88 Comparing two different types of values. Expected null but received number.89 65 | 90 66 | test('assert.ifError', () => {91 > 67 | assert.ifError(1);92 | ^93 68 | });94 69 | 95 70 | test('assert.doesNotThrow', () => {96 at Object.ifError (__tests__/​assertionError.test.js:67:10)97`;98 expect(summary).toContain(ifErrorMessage);99 summary = summary.replace(ifErrorMessage, '');100 } else {101 const ifErrorMessage = `102 thrown: 1103 64 | });104 65 | 105 > 66 | test('assert.ifError', () => {106 | ^107 67 | assert.ifError(1);108 68 | });109 69 | 110 at Object.test (__tests__/​assertionError.test.js:66:1)111`;112 expect(summary).toContain(ifErrorMessage);113 summary = summary.replace(ifErrorMessage, '');114 }115 expect(wrap(summary)).toMatchSnapshot();116});117test('works with assertions in separate files', () => {118 const {stderr} = runJest(dir, ['testMacro.test.js']);119 expect(wrap(normalizeDots(cleanStderr(stderr)))).toMatchSnapshot();120});121test('works with async failures', () => {122 const {stderr} = runJest(dir, ['asyncFailures.test.js']);123 const rest = cleanStderr(stderr)124 .split('\n')125 .filter(line => line.indexOf('packages/​expect/​build/​index.js') === -1)126 .join('\n');127 /​/​ Remove replacements when jasmine is gone128 const result = normalizeDots(rest)129 .replace(/​.*thrown:.*\n/​, '')130 .replace(/​.*Use jest\.setTimeout\(newTimeout\).*/​, '<REPLACED>')131 .replace(/​.*Timeout - Async callback was not.*/​, '<REPLACED>');132 expect(wrap(result)).toMatchSnapshot();133});134test('works with snapshot failures', () => {135 const {stderr} = runJest(dir, ['snapshot.test.js']);136 const result = normalizeDots(cleanStderr(stderr));137 expect(138 wrap(result.substring(0, result.indexOf('Snapshot Summary'))),139 ).toMatchSnapshot();140});141test('works with named snapshot failures', () => {142 const {stderr} = runJest(dir, ['snapshotNamed.test.js']);143 const result = normalizeDots(cleanStderr(stderr));144 expect(145 wrap(result.substring(0, result.indexOf('Snapshot Summary'))),146 ).toMatchSnapshot();...

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build.js

Source:build.js Github

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1const exec = require('child_process').exec;2async function runNpmCommand(command) {3 /​/​const { stdout, stderr } = await exec(`npm run ${command}`);4 return new Promise((resolve, reject) => {5 const start = process.hrtime();6 exec(`yarn run ${command}`, (error, stdout, stderr) => {7 if (error) {8 reject({ error: stderr, out: stdout });9 return;10 }11 let cleanStdErr = cleanErr(stderr);12 if (cleanStdErr) {13 reject({ error: cleanStdErr, out: stdout });14 return;15 }16 const elapsed = process.hrtime(start);17 resolve({ out: stdout, time: elapsed });18 });19 });20}21async function runBuildStep(comment, command) {22 process.stdout.write(comment);23 const result = await runNpmCommand(command);24 process.stdout.write(`done (${formatTime(result.time)})\n`);25 return result;26}27function formatTime(time) {28 const seconds = time[0];29 const min = Math.trunc(seconds /​ 60);30 const secondsLeft = seconds - min * 60;31 return `${min}m ${secondsLeft}s`;32}33function cleanErr(stderr) {34 return (stderr || '').split('\n')35 .filter(x => x.replace(' ', '').replace('\r', '').length > 0) /​/​clean empty strings36 .filter(x => !x.startsWith('npm WARN')) /​/​clean npm warnings;37 .join('\n');38}39async function build() {40 try {41 await runBuildStep('Fixing style...', 'lint_fix');42 await runBuildStep('Linting...', 'lint');43 await runBuildStep('Building server...', 'build_server');44 await runBuildStep('Building client...', 'build_client');45 } catch (err) {46 process.stdout.write("error\n");47 if (err.out) {48 console.error('STDOUT:');49 console.error(err.out.toString());50 }51 console.error('STDERR:');52 console.error(err.error.toString());53 process.exit(1);54 }55}...

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release.js

Source:release.js Github

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1/​/​ Create a tag using the current server package version and push the tag to origin2const { version } = require("../​../​packages/​server/​package.json");3const { exec } = require("child_process");4const { exit } = require("process");5release();6async function release() {7 console.log(`[tag] clean up v${version}`);8 const { error: cleanError, stderr: cleanStderr } = await runShell(`git tag -d v${version}`, { dir: __dirname });9 if (cleanError || cleanStderr) {10 console.log(`[tag] nothing to clean up, continue`);11 }12 console.log(`[tag] add v${version}`);13 const { error: addError, stderr: addStderr } = await runShell(`git tag v${version}`, { dir: __dirname });14 if (addError || addStderr) {15 console.error("[tag] add failed");16 console.error("[tag] error code", addError?.code);17 console.error("[tag] error msg", addStderr);18 exit(1);19 }20 console.log(`[tag] push v${version}`);21 const { stdout: pushStdout, error: pushError, stderr: pushStderr } = await runShell(`git push origin v${version}`, { dir: __dirname });22 if (pushError) { /​/​ Git writes to stderr even when successful23 console.error("[tag] push failed");24 console.error("[tag] error code", pushError?.code);25 console.error("[tag] error msg", pushStderr);26 exit(1);27 }28 console.log(pushStderr ?? pushStdout ?? "No output. Something might be wrong.");29}30async function runShell(command, options) {31 return new Promise((resolve) => {32 exec(command, options, (error, stdout, stderr) =>33 resolve({34 error,35 stdout,36 stderr,37 })38 );39 });...

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Jest Testing Tutorial

LambdaTest’s Jest Testing Tutorial covers step-by-step guides around Jest with code examples to help you be proficient with the Jest framework. The Jest tutorial has chapters to help you learn right from the basics of Jest framework to code-based tutorials around testing react apps with Jest, perform snapshot testing, import ES modules and more.

Chapters

  1. What is Jest Framework
  2. Advantages of Jest - Jest has 3,898,000 GitHub repositories, as mentioned on its official website. Learn what makes Jest special and why Jest has gained popularity among the testing and developer community.
  3. Jest Installation - All the prerequisites and set up steps needed to help you start Jest automation testing.
  4. Using Jest with NodeJS Project - Learn how to leverage Jest framework to automate testing using a NodeJS Project.
  5. Writing First Test for Jest Framework - Get started with code-based tutorial to help you write and execute your first Jest framework testing script.
  6. Jest Vocabulary - Learn the industry renowned and official jargons of the Jest framework by digging deep into the Jest vocabulary.
  7. Unit Testing with Jest - Step-by-step tutorial to help you execute unit testing with Jest framework.
  8. Jest Basics - Learn about the most pivotal and basic features which makes Jest special.
  9. Jest Parameterized Tests - Avoid code duplication and fasten automation testing with Jest using parameterized tests. Parameterization allows you to trigger the same test scenario over different test configurations by incorporating parameters.
  10. Jest Matchers - Enforce assertions better with the help of matchers. Matchers help you compare the actual output with the expected one. Here is an example to see if the object is acquired from the correct class or not. -

|<p>it('check_object_of_Car', () => {</p><p> expect(newCar()).toBeInstanceOf(Car);</p><p> });</p>| | :- |

  1. Jest Hooks: Setup and Teardown - Learn how to set up conditions which needs to be followed by the test execution and incorporate a tear down function to free resources after the execution is complete.
  2. Jest Code Coverage - Unsure there is no code left unchecked in your application. Jest gives a specific flag called --coverage to help you generate code coverage.
  3. HTML Report Generation - Learn how to create a comprehensive HTML report based on your Jest test execution.
  4. Testing React app using Jest Framework - Learn how to test your react web-application with Jest framework in this detailed Jest tutorial.
  5. Test using LambdaTest cloud Selenium Grid - Run your Jest testing script over LambdaTest cloud-based platform and leverage parallel testing to help trim down your test execution time.
  6. Snapshot Testing for React Front Ends - Capture screenshots of your react based web-application and compare them automatically for visual anomalies with the help of Jest tutorial.
  7. Bonus: Import ES modules with Jest - ES modules are also known as ECMAScript modules. Learn how to best use them by importing in your Jest testing scripts.
  8. Jest vs Mocha vs Jasmine - Learn the key differences between the most popular JavaScript-based testing frameworks i.e. Jest, Mocha, and Jasmine.
  9. Jest FAQs(Frequently Asked Questions) - Explore the most commonly asked questions around Jest framework, with their answers.

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