Add test to check if district is valid

app/services/build_heritage.rb

@@ -5,6 +5,12 @@ def initialize(_params, district: nil)
     params = _params.to_h.deep_dup
     heritage_name = params.delete(:id) || params[:name]
     @heritage = Heritage.find_or_initialize_by(name: heritage_name)
+
+    # we can remove this check once we find heritage by heritage name and district name
+    if district &&  @heritage.district && district.id != @heritage.district.id
+      raise ExceptionHandler::InternalServerError.new("Wrong district is provided")
+    end
+
     @district = district || @heritage.district
     @params = convert_params_for_model params
   end

spec/services/build_heritage_spec.rb

@@ -276,5 +276,12 @@
         end
       end
     end
+
+    context "when wrong district is passed" do
+      it "it should and throw an error" do
+        district = create(:district)
+        expect { BuildHeritage.new(params, district: district) }.to raise_error("Wrong district is provided")
+      end
+    end
   end
 end