Can't get uniqueness validation test pass with shoulda matcher
The documentation for that matcher says:
This matcher works a bit differently than other matchers. As noted before, it will create an instance of your model if one doesn't already exist. Sometimes this step fails, especially if you have database-level restrictions on any attributes other than the one which is unique. In this case, the solution is to populate these attributes with before you call
validate_uniqueness_of.
So in your case the solution would be something like:
describe "uniqueness" do subject { AvatarPart.new(name: "something", type: "something else") } it { should validate_uniqueness_of(:name).case_insensitive } end
In addition to above, a pattern I've used that resolves it:
RSpec.describe AvatarPart, :type => :model describe 'validations' do let!(:avatar_part) { create(:avatar_part) } it { should validate_uniqueness_of(:some_attribute) } it { should validate_uniqueness_of(:other_attribute) } endend