ruby on rails - Why does this spec of my model's uniqueness validation fail when it should pass? -

i learning testing rspec. not working tests.

my model:

class user < activerecord::base   has_secure_password    # validation macros   validates_presence_of :name, :email   validates_uniqueness_of :email, case_sensitive: false end 

my factory:

factorygirl.define   factory :user     name "joe doe"     email "joe@example.com"     password_digest "super_secret_password"   end end 

and spec:

require 'rails_helper'  rspec.describe user, type: :model   user = factorygirl.build(:user)    'has valid factory'     expect(factorygirl.build(:user)).to be_valid   end    { is_expected.to respond_to(:name) }   { is_expected.to respond_to(:email) }   { is_expected.to respond_to(:password) }   { is_expected.to respond_to(:password_confirmation) }    { expect(user).to validate_presence_of(:name) }   { expect(user).to validate_presence_of(:email) }   { expect(user).to validate_presence_of(:password) }   { expect(user).to validate_uniqueness_of(:email).case_insensitive } end 

i expected test pass. result:

failures:

1) user should validate :email case-insensitively unique failure/error: { expect(user).to validate_uniqueness_of(:email).case_insensitive }

   user did not validate :email case-insensitively unique.      record provided not created, failed      following validation errors:       * name: ["can't blank"]  # ./spec/models/user_spec.rb:18:in `block (2 levels) in <top (required)>' 

finished in 0.34066 seconds (files took 1.56 seconds load) 9 examples, 1 failure

failed examples:

rspec ./spec/models/user_spec.rb:18 # user should validate :email case-insensitively unique

what missing?

update

i think bug: https://github.com/thoughtbot/shoulda-matchers/issues/830

your variable set once tests

when write code like:

rspec.describe user, type: :model   user = factorygirl.build(:user) end 

you aren't building new user each time run new spec. likewise, using #let wrong approach, because it memoizes variable between tests. instead, need use rspec before#each block. example:

describe user   before     @user = factorygirl.build :user   end    # specs end 

if have tests persisting user database, , if have disabled rollback or database cleaning between tests, defined factory (as written) fail uniqueness validation. in such cases, may want try:

• user.delete_all in test, or otherwise cleaning database between tests.
• using factorygirl sequences or faker gem ensure user attributes unique.