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=== Operator

How it works ?

x === y checks if y belongs to x group.

  String === "hello" # true
  String === 1 # false
  
 (1..10) === 3 # true

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Use pluck instead of map

Celebrity.all.map(&:id)

=> Time: 3.925s

Celebrity.select(:id).map(&:id)

=> Time: 0.098s

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Problem

How to test complex controller method with chained method ?

Example

  
  def update
    # ...
 user.propositions.call

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Use spy

Spies are an alternate type of test double that support this pattern by allowing you to expect that a message has been received after the fact, using have_received.

RSpec.describe "have_received" do
  it "passes when the message has been received" do
 invitation = spy('invitation')

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#Easy search

#Running test internaly
Shortcut to run a specific test
Link in the console on the errors
Step by step debugging

#Jump to function def

#Refactor

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#Go to the release branch

git checkout RELEASE_date

#Pull the last changes

git pull origin RELEASE_date