Failing uniqueness validation with FactoryGirl - ruby-on-rails

Question

I'm having problems with FactoryGirl, I'm using sequence to avoid duplicating fields, but validations are failing anyway.
Output:
1) CustomersController anonymous user GET #edit is redirected to signin when accessing edit form
Failure/Error: get :edit, id: create(:customer)
ActiveRecord::RecordInvalid:
Validation failed: Email has already been taken, Email has already been taken
# ./spec/controllers/customers_controller_spec.rb:25:in `block (4 levels) in <top (required)>'
# -e:1:in `<main>'
3) Customer public class methods executes its methods correctly #find_by_id_or_name finds customer by name
Failure/Error: let(:john) {create(:customer, name: 'John Doe X')}
ActiveRecord::RecordInvalid:
Validation failed: Email has already been taken, Email has already been taken
# ./spec/models/customer_spec.rb:25:in `block (3 levels) in <top (required)>'
# ./spec/models/customer_spec.rb:38:in `block (5 levels) in <top (required)>'
# -e:1:in `<main>'
Factories:
FactoryGirl.define do
factory :customer do
user
name {Faker::Name.name}
sequence(:mail) { |n| "person#{n}#example.com" }
address {Faker::Address.street_address}
phone {Faker::PhoneNumber.phone_number}
end
end
FactoryGirl.define do
factory :user do
sequence(:email) {|i| "example#{i}#example.com"}
password {Faker::Internet.password(10)}
end
end
These are the tests that are failing:
RSpec.describe Customer, type: :model do
describe "public class methods" do
let(:john) {create(:customer, name: 'John Doe X')}
let(:frank) {create(:customer)}
context "responds to its methods" do
it "responds to #find_by_id_or_name" do
expect(Customer).to respond_to(:find_by_id_or_name)
end
end
context "executes its methods correctly" do
context "#find_by_id_or_name" do
it "finds customer by name" do
customer = Customer.find_by_id_or_name('John Doe X')
expect(customer).to eq john
end
it "finds customer by id" do
customer = Customer.find_by_id_or_name(frank.id)
expect(customer).to eq frank
end
end
end
end
end
RSpec.describe CustomersController, type: :controller do
context "signed in user" do
before :each do
#user = create(:user)
end
describe "GET #edit" do
it "renders :edit view" do
get :edit, id: create(:customer).id
expect(response).to render_template(:edit)
end
end
describe "DELETE #destroy" do
before :each do
#customer = create(:customer, user: #user)
end
it "deletes record" do
expect {delete :destroy, id: #customer.id}.to change(Customer, :count).by(-1)
end
end
end
end
This is happening to me all over my app. I just copied some tests that apply to Customer.
Thanks

Answer 1

My problem was related to not appropiately configuring database_cleaner. The configuration in this post solves the problem: How can I clean my database between erroneous rspec specs?