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jlcrochet's solution

to Bob in the Lua Track

Published at Jun 28 2020 · 0 comments
Test suite


This exercise has changed since this solution was written.

Bob is a lackadaisical teenager. In conversation, his responses are very limited.

Bob answers 'Sure.' if you ask him a question.

He answers 'Whoa, chill out!' if you yell at him.

He answers 'Calm down, I know what I'm doing!' if you yell a question at him.

He says 'Fine. Be that way!' if you address him without actually saying anything.

He answers 'Whatever.' to anything else.

Bob's conversational partner is a purist when it comes to written communication and always follows normal rules regarding sentence punctuation in English.

Running the tests

To run the tests, run the command busted from within the exercise directory.

Further information

For more detailed information about the Lua track, including how to get help if you're having trouble, please visit the exercism.io Lua language page.


Inspired by the 'Deaf Grandma' exercise in Chris Pine's Learn to Program tutorial. http://pine.fm/LearnToProgram/?Chapter=06

Submitting Incomplete Solutions

It's possible to submit an incomplete solution so you can see how others have completed the exercise.


local bob = require('bob')

describe('bob', function()
  it('stating something', function()
    local result = bob.hey('Tom-ay-to, tom-aaaah-to.')
    assert.are.equals('Whatever', result)

  it('shouting', function ()
    local result = bob.hey('WATCH OUT!')
    assert.are.equals('Whoa, chill out!', result)

  it('asking a question', function ()
    local result = bob.hey('Does this cryogenic chamber make me look fat?')
    assert.are.equals('Sure', result)

  it('talking forcefully', function ()
    local result = bob.hey("Let's go make out behind the gym!")
    assert.are.equals('Whatever', result)

  it('shouting numbers', function ()
    local result = bob.hey('1, 2, 3 GO!')
    assert.are.equals('Whoa, chill out!', result)

  it('shouting with special characters', function ()
    local result = bob.hey('ZOMG THE %^*@#$(*^ ZOMBIES ARE COMING!!11!!1!')
    assert.are.equals('Whoa, chill out!', result)

  it('silence', function ()
    local result = bob.hey('')
    assert.are.equals('Fine, be that way.', result)
local bob = {}

function bob.hey(say)
  local is_blank =    not say:find("[%w%p]")
  local is_question = say:find("?%s*$")
  local is_yell =     say:find("%u") and not say:find("%l")

  if is_blank then
    return "Fine, be that way."
  elseif is_question and is_yell then
    return "Calm down, I know what I'm doing!"
  elseif is_question then
    return "Sure"
  elseif is_yell then
    return "Whoa, chill out!"
    return "Whatever"

return bob

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