Quick spec to show the UriName model doesn't handle case-insensitive duplicate names

UniqueUserValidation.rb

describe '#login' do
  it 'should validate presence' do
    expect{ User.create!(name: 't', password: 'password1', email: 'test@example.com') }.to raise_error
  end

  it 'should validate uniqueness' do
    expect{ User.create!(name: 't', login: 't', password: 'password1', email: 'test@example.com') }.to_not raise_error
    expect{ User.create!(name: 't', login: 't', password: 'password1', email: 'test2@example.com') }.to raise_error
    expect{ User.create!(name: 'T', login: 'T', password: 'password1', email: 'test3@example.com') }.to raise_error
  end

  context "when a userGroup with the same login/name but different case already exists" do
    let!(:change_user_name) { user.attributes={ "login" => "zoo", "name" => "zooniverse"} }
    let!(:user_group) { create(:user_group, name: "ZooNiVeRsE", display_name: "zoo") }

    it "should not be valid" do
      expect(user.valid?).to be false
    end

    it "should an error message on the name field"do
      user.valid?
      expect(user.errors[:name]).to include("some error re the uri_name login/name field being already taken")
    end
  end
end