Latest version - more stuff

test/models/domain_test.rb

@@ -1,7 +1,18 @@
 require "test_helper"
 
 class DomainTest < ActiveSupport::TestCase
-  # test "the truth" do
-  #   assert true
-  # end
+  test "domain can not be blank" do
+    @d = Domain.new
+    assert !@d.save
+  end
+
+  test "domain can no tbe duplicated" do
+    @d1 = Domain.new
+    @d1.name = "example.com"
+    assert @d1.save
+
+    @d2 = Domain.new
+    @d2.name = "example.com"
+    assert !@d2.save
+  end
 end