Test key model

spec/models/key_spec.rb

@@ -0,0 +1,12 @@
+describe Key do
+  subject(:key) { build :key }
+
+  it { is_expected.to be_valid }
+  it { is_expected.to belong_to :user }
+  it { is_expected.to validate_presence_of :name }
+
+  it 'has a token when created' do
+    key.save
+    expect(key.token).to match /\A[\w\d]{24,}\z/
+  end
+end