fix scaffold controller generator tests

Author: Francesco Rodriguez

railties/test/generators/scaffold_generator_test.rb

@@ -30,17 +30,13 @@ def test_scaffold_on_invoke
         assert_match(/@product_lines = ProductLine\.all/, m)
       end
 
-      assert_instance_method :show, content do |m|
-        assert_match(/@product_line = ProductLine\.find\(params\[:id\]\)/, m)
-      end
+      assert_instance_method :show, content
 
       assert_instance_method :new, content do |m|
         assert_match(/@product_line = ProductLine\.new/, m)
       end
 
-      assert_instance_method :edit, content do |m|
-        assert_match(/@product_line = ProductLine\.find\(params\[:id\]\)/, m)
-      end
+      assert_instance_method :edit, content
 
       assert_instance_method :create, content do |m|
         assert_match(/@product_line = ProductLine\.new\(product_line_params\)/, m)
@@ -49,15 +45,17 @@ def test_scaffold_on_invoke
       end
 
       assert_instance_method :update, content do |m|
-        assert_match(/@product_line = ProductLine\.find\(params\[:id\]\)/, m)
         assert_match(/@product_line\.update_attributes\(product_line_params\)/, m)
         assert_match(/@product_line\.errors/, m)
       end
 
       assert_instance_method :destroy, content do |m|
-        assert_match(/@product_line = ProductLine\.find\(params\[:id\]\)/, m)
         assert_match(/@product_line\.destroy/, m)
       end
+
+      assert_instance_method :set_product_line, content do |m|
+        assert_match(/@product_line = ProductLine\.find\(params\[:id\]\)/, m)
+      end
     end
 
     assert_file "test/controllers/product_lines_controller_test.rb" do |test|
@@ -149,17 +147,13 @@ def test_scaffold_with_namespace_on_invoke
         assert_match(/@admin_roles = Admin::Role\.all/, m)
       end
 
-      assert_instance_method :show, content do |m|
-        assert_match(/@admin_role = Admin::Role\.find\(params\[:id\]\)/, m)
-      end
+      assert_instance_method :show, content
 
       assert_instance_method :new, content do |m|
         assert_match(/@admin_role = Admin::Role\.new/, m)
       end
 
-      assert_instance_method :edit, content do |m|
-        assert_match(/@admin_role = Admin::Role\.find\(params\[:id\]\)/, m)
-      end
+      assert_instance_method :edit, content
 
       assert_instance_method :create, content do |m|
         assert_match(/@admin_role = Admin::Role\.new\(admin_role_params\)/, m)
@@ -168,15 +162,17 @@ def test_scaffold_with_namespace_on_invoke
       end
 
       assert_instance_method :update, content do |m|
-        assert_match(/@admin_role = Admin::Role\.find\(params\[:id\]\)/, m)
         assert_match(/@admin_role\.update_attributes\(admin_role_params\)/, m)
         assert_match(/@admin_role\.errors/, m)
       end
 
       assert_instance_method :destroy, content do |m|
-        assert_match(/@admin_role = Admin::Role\.find\(params\[:id\]\)/, m)
         assert_match(/@admin_role\.destroy/, m)
       end
+
+      assert_instance_method :set_admin_role, content do |m|
+        assert_match(/@admin_role = Admin::Role\.find\(params\[:id\]\)/, m)
+      end
     end
 
     assert_file "test/controllers/admin/roles_controller_test.rb",