This chapter is from the book
This chapter is from the book
This chapter is from the book
This chapter is from the book
8.9 Testing Validations with Shoulda
Even though validations are declarative code, if you’re doing TDD then you’ll want to specify them before writing them. Luckily, Thoughtbot’s Shoulda Matchers library3 contains a number of matchers designed to easily test validations.
describe Post do
it { should validate_uniqueness_of(:title) }
it { should validate_presence_of(:body).with_message(/wtf/) }
it { should validate_presence_of(:title) }
it { should validate_numericality_of(:user_id) }
end
describe User do
it { should_not allow_value("blah").for(:email) }
it { should_not allow_value("b lah").for(:email) }
it { should allow_value("a@b.com").for(:email) }
it { should allow_value("asdf@asdf.com").for(:email) }
it { should ensure_length_of(:email).is_at_least(1).is_at_most(100) }
it { should ensure_inclusion_of(:age).in_range(1..100) }
end