Improve readability

#707

test/models/contact/contact_test.rb

@@ -5,7 +5,7 @@ class ContactTest < ActiveSupport::TestCase
     @contact = contacts(:john)
   end
 
-  def test_validates
+  def test_valid_fixture_is_valid
     assert @contact.valid?
   end
 

test/models/domain/domain_test.rb

@@ -5,11 +5,11 @@ class DomainTest < ActiveSupport::TestCase
     @domain = domains(:shop)
   end
 
-  def test_valid_fixture
+  def test_valid_fixture_is_valid
     assert @domain.valid?
   end
 
-  def test_invalid_fixture
+  def test_invalid_fixture_is_invalid
     assert domains(:invalid).invalid?
   end
 end