patoi

it('is OK - not bad', async () => {
  let result = await testFunction(true)
  expect(result).to.be.equal('OK')
  // flawed test throws an error, but it is not a test error (AssertionError)
})

patoi

  it('is not OK - not bad, but it could be better', async () => {
    try {
      let result = await testFunction(false)
      expect.fail()
      // flawed test throws an ugly error:
    } catch (err) {
      // ...'AssertionError: expected 'expect.fail()' to equal 'not OK''
      expect(err.message).to.be.equal('not OK')
    }
  })

patoi

it('is not OK - bad!', async () => {
    try {
      let result = await testFunction(false)
      // flawed tests __pass__ instead of throws an error!
    } catch (err) {
      expect(err.message).to.be.equal('not OK')
    }
  })

patoi

async function testFunction (isOK) {
    if (isOK === true) {
      return 'OK'
    } else {
      throw new Error('not OK')
    }
}

patoi

  it('is not OK - better way', async function() {
    let result, error
    try {
      result = await testFunction(false)
    } catch (err) {
      error = err
    } finally {
      expect(result).to.be.undefined() // guard: handling code flaw
      expect(error.message).to.be.equal('not OK')
    }

patoi

  it('is OK - better way', async function() {
    let result, error
    try {
      result = await testFunction(true)
    } catch (err) {
      error = err
    } finally {
      expect(error).to.be.undefined() // guard: handling code flaw
      expect(result).to.be.equal('OK')
    }

patoi

  it('your test', async function() {
    
    let args = ... // your test data
    let result, error // variables: test and guard in the finally block
    
    try {
      result = await testFunction(args)
    } catch (err) {
      error = err
    } finally {

patoi

/*
 * Selenium WebDriver JavaScript test with Mocha and NodeJS
 * 
 * Start with: SELENIUM=PATH_TO_SELENIUM_JAR/selenium-server-standalone-2.31.0.jar mocha -t 10000 -R list google-sample.js
 * 
 * Download selenium-server-standalone-2.31.0.jar from https://selenium.googlecode.com/files/selenium-server-standalone-2.31.0.jar
 * 'sudo su' and 'npm install -g colors mocha selenium-webdriver'
 * 
 * http://visionmedia.github.io/mocha/
 * https://code.google.com/p/selenium/wiki/WebDriverJs

patoi

FROM node:8-alpine

# the client version we will download from bumpx repo
ENV CLIENT_FILENAME instantclient-basic-linux.x64-12.1.0.1.0.zip

# work in this directory
WORKDIR /opt/oracle/lib

# take advantage of this repo to easily download the client (use it at your own risk)
ADD https://github.com/bumpx/oracle-instantclient/raw/master/${CLIENT_FILENAME} .

patoi

'use strict'

const ITERATION = 1000
console.log(
  process.version,
  ITERATION,
  'iteration',
  'with Type and freeze – v2: prototype based constructor function'
)