Add uniqueness validation on Endpoint#url

app/models/endpoint.rb

@@ -4,6 +4,7 @@ class Endpoint < ApplicationRecord
   default_value_for :verify_ssl, OpenSSL::SSL::VERIFY_PEER
   validates :verify_ssl, :inclusion => {:in => [OpenSSL::SSL::VERIFY_NONE, OpenSSL::SSL::VERIFY_PEER]}
   validates :port, :numericality => {:only_integer => true, :allow_nil => true, :greater_than => 0}
+  validates :url, :uniqueness => true, :if => :url
 
   def verify_ssl=(val)
     val = resolve_verify_ssl_value(val)

spec/controllers/provider_foreman_controller_spec.rb

@@ -157,17 +157,13 @@
     end
   end
 
-  context "#save_provider_foreman" do
-    it "will not save with a duplicate name" do
-      ManageIQ::Providers::Foreman::Provider.create(:name => "test2Foreman",
-                                                    :url => "10.8.96.103", :zone => @zone)
-      provider2 = ManageIQ::Providers::Foreman::Provider.new(:name => "test2Foreman",
-                                                             :url => "10.8.96.103", :zone => @zone)
-      controller.instance_variable_set(:@provider_cfgmgmt, provider2)
-      allow(controller).to receive(:render_flash)
-      controller.save_provider_foreman
-      expect(assigns(:flash_array).first[:message]).to include("Configuration_manager.name has already been taken")
-    end
+  it "#save_provider_foreman will not save with a duplicate name" do
+    ManageIQ::Providers::Foreman::Provider.create(:name => "test2Foreman", :url => "server1", :zone => @zone)
+    provider2 = ManageIQ::Providers::Foreman::Provider.new(:name => "test2Foreman", :url => "server2", :zone => @zone)
+    controller.instance_variable_set(:@provider_cfgmgmt, provider2)
+    allow(controller).to receive(:render_flash)
+    controller.save_provider_foreman
+    expect(assigns(:flash_array).first[:message]).to include("Configuration_manager.name has already been taken")
   end
 
   context "#edit" do

spec/models/endpoint_spec.rb

@@ -45,4 +45,16 @@
       end
     end
   end
+
+  context "Uniqueness validation on :url" do
+    it "is not required" do
+      expect(Endpoint.create!).to be_truthy
+      expect(Endpoint.create!).to be_truthy
+    end
+
+    it "raises when provided and already exists" do
+      Endpoint.create!(:url => "abc")
+      expect { Endpoint.create!(:url => "abc") }.to raise_error("Validation failed: Url has already been taken")
+    end
+  end
 end