Upgrade to Pro
— share decks privately, control downloads, hide ads and more …
Speaker Deck
Features
Speaker Deck
PRO
Sign in
Sign up for free
Search
Search
RSpec Love
Search
Lucas Marinho
July 06, 2013
Programming
1
200
RSpec Love
Compartilho 10 dicas para melhorar os seus Specs. Referência: betterspecs.org
Lucas Marinho
July 06, 2013
Tweet
Share
Other Decks in Programming
See All in Programming
Range on Rails ―「多重範囲型」という新たな選択肢が、複雑ロジックを劇的にシンプルにしたワケ
rizap_tech
0
130
Catch Up: Go Style Guide Update
andpad
0
230
コードとあなたと私の距離 / The Distance Between Code, You, and I
hiro_y
0
170
Things You Thought You Didn’t Need To Care About That Have a Big Impact On Your Job
hollycummins
0
230
「ちょっと古いから」って避けてた技術書、今だからこそ読もう
mottyzzz
10
6.7k
Go言語はstack overflowの夢を見るか?
logica0419
0
310
スマホから Youtube Shortsを見られないようにする
lemolatoon
27
32k
技術的負債の正体を知って向き合う / Facing Technical Debt
irof
0
170
私はどうやって技術力を上げたのか
yusukebe
43
18k
AIと人間の共創開発!OSSで試行錯誤した開発スタイル
mae616
1
240
CSC509 Lecture 03
javiergs
PRO
0
340
dynamic!
moro
10
7.9k
Featured
See All Featured
How to Think Like a Performance Engineer
csswizardry
27
2k
Designing for humans not robots
tammielis
254
26k
Building Better People: How to give real-time feedback that sticks.
wjessup
369
20k
GraphQLの誤解/rethinking-graphql
sonatard
73
11k
Chrome DevTools: State of the Union 2024 - Debugging React & Beyond
addyosmani
8
910
A Tale of Four Properties
chriscoyier
161
23k
Build The Right Thing And Hit Your Dates
maggiecrowley
37
2.9k
[RailsConf 2023 Opening Keynote] The Magic of Rails
eileencodes
31
9.7k
Raft: Consensus for Rubyists
vanstee
140
7.1k
Six Lessons from altMBA
skipperchong
29
4k
The Myth of the Modular Monolith - Day 2 Keynote - Rails World 2024
eileencodes
26
3.1k
VelocityConf: Rendering Performance Case Studies
addyosmani
332
24k
Transcript
RSpec Love @lmarinho
None
RSpec Love @lmarinho
None
RSpec Love @lmarinho
RSpec Love @lmarinho
RSpec Love @lmarinho
Code Spec
None
None
DISCLAIMER: É SÓ A MINHA OPINIÃO
None
Use expect foo.should eq(bar) foo.should_not eq(bar)
Use expect expect(foo).to eq(bar) expect(foo).not_to eq(bar)
Use expect .should class Proxy < BasicObject def initialize(target) @target
= target end def method_missing(*args, &block) @target.__send__(*args, &block) end ... end
None
Use describe Referencia estrutura do código testado
Use describe describe MyClass do ... describe ‘#method’ do ...
describe ‘.class_method’ do ...
None
Use context Define um estado ou entrada no sistema
Use context context ‘when the user has no username’ do
... context ‘when the account balance is 0.0’ do ...
None
Contexto Expectativa
Use let Let ajuda a definir nomes relacionados a contextos
Use let let(:email) { ‘
[email protected]
’ }
Use let let(:email) { ‘
[email protected]
’ } let(:user) { User.new(email: email)
} context ‘when there is no email’ do let(:email) { ‘’ } it ‘is invalid’ do expect(user).to be_invalid end end
Use let Prefira ‘let’ a ‘before’, pois o primeiro é
lazy-loaded
None
Use subject Subject ajuda a evitar repetição de referências
Use subject describe User do it ‘has the expected attributes’
do user = User.new expect(user).to respond_to :name expect(user).to respond_to :email expect(user).to respond_to :age end end
Use subject describe User do subject { User.new } it
{ should respond_to :name } it { should respond_to :email } it { should respond_to :age } end
None
Use “skim its” Skim milk < 0.3% gordura Skim it
1 expectation & < 4 LOC
None
Crie métodos Métodos ajudam a evitar repetições desnecessárias
Crie métodos it { should_create_report_named('Volume Evolution') } it { should_create_report_named('Top
Users') } it { should_create_report_named('Top Terms') } it { should_create_report_named('Gender Report') }
Crie métodos Métodos também ajudam a evitar loops em specs
None
Reuse specs É possível reusar specs através de shared_examples
Reuse specs shared_examples ‘a collection’ do let(:collection) { described_class.new([7, 2,
4]) } context ‘when initialized with 3 items’ do it ‘says it has three items’ do expect(collection.size).to eq(3) end end end
Reuse specs describe Array do it_behaves_like ‘a collection’ end describe
Set do it_behaves_like ‘a collection’ end
None
Use factories As vezes...
Use factories Pois FactoryGirl é legal!
None
Use mocks? Mock-based tests are more coupled to the interfaces
in your system, while classical tests are more coupled to the implementation of an object’s collaborators. -- Myron Marston
0
None
Perguntas?
Referências betterspecs.org e links associados