Spec for custom and default renderers

Author: bquorning

example_app_generator/app/views/foo.html

@@ -0,0 +1 @@
+Static template named 'foo.html'

example_app_generator/app/views/some_templates/bar.html

@@ -0,0 +1 @@
+Static template named 'bar.html'

example_app_generator/generate_stuff.rb

@@ -14,6 +14,9 @@ def setup_tasks
 
     def final_tasks
       copy_file 'spec/verify_active_record_spec.rb'
+      copy_file 'app/views/foo.html'
+      copy_file 'app/views/some_templates/bar.html'
+      copy_file 'spec/verify_custom_renderers_spec.rb'
       copy_file 'spec/verify_fixture_warning_spec.rb'
       run('bin/rake db:migrate')
       if ::Rails::VERSION::STRING.to_f < 4.1

example_app_generator/spec/verify_custom_renderers_spec.rb

@@ -0,0 +1,159 @@
+require 'rails_helper'
+
+RSpec.describe "template rendering", :type => :controller do
+  context "without render_views" do
+    context "with the standard renderers" do
+      controller do
+        def index
+          render :template => 'foo', :layout => false
+        end
+      end
+
+      it "renders the 'foo' template" do
+        get :index
+
+        expect(response).to render_template(:foo)
+      end
+
+      it "renders an empty string" do
+        get :index
+
+        expect(response.body).to eq("")
+      end
+    end
+
+    context "with a String path prepended to the view path" do
+      controller do
+        def index
+          prepend_view_path('app/views/some_templates')
+
+          render :template => 'bar', :layout => false
+        end
+      end
+
+      it "renders the 'bar' template" do
+        get :index
+
+        expect(response).to render_template(:bar)
+      end
+
+      it "renders an empty string" do
+        get :index
+
+        expect(response.body).to eq("")
+      end
+    end
+
+    context "with a custom renderer prepended to the view path" do
+      controller do
+        def index
+          prepend_view_path(MyResolver.new)
+
+          render :template => 'baz', :layout => false
+        end
+      end
+
+      it "renders the 'baz' template" do
+        get :index
+
+        expect(response).to render_template(:baz)
+      end
+
+      it "renders an empty string" do
+        get :index
+
+        expect(response.body).to eq("")
+      end
+    end
+  end
+
+  context "with render_views enabled" do
+    render_views
+
+    context "with the standard renderers" do
+      controller do
+        def index
+          render :template => 'foo', :layout => false
+        end
+      end
+
+      it "renders the 'foo' template" do
+        get :index
+
+        expect(response).to render_template(:foo)
+      end
+
+      it "renders the contents of the template" do
+        get :index
+
+        expect(response.body).to include("Static template named 'foo.html'")
+      end
+    end
+
+    context "with a String path prepended to the view path" do
+      controller do
+        def index
+          prepend_view_path('app/views/some_templates')
+
+          render :template => 'bar', :layout => false
+        end
+      end
+
+      it "renders the 'bar' template" do
+        get :index
+
+        expect(response).to render_template(:bar)
+      end
+
+      it "renders the contents of the template" do
+        get :index
+
+        expect(response.body).to include("Static template named 'bar.html'")
+      end
+    end
+
+    context "with a custom renderer prepended to the view path" do
+      controller do
+        def index
+          prepend_view_path(MyResolver.new)
+
+          render :template => 'baz', :layout => false
+        end
+      end
+
+      it "renders the 'baz' template" do
+        get :index
+
+        expect(response).to render_template(:baz)
+      end
+
+      it "renders the contents of the template" do
+        get :index
+
+        expect(response.body).to eq("Dynamic template with path '/baz'")
+      end
+    end
+  end
+
+  class MyResolver < ActionView::Resolver
+  private
+
+    def find_templates(name, prefix = nil, partial = false, details = {}, key = nil, locals = [])
+      name.prepend("_") if partial
+      path = [prefix, name].join("/")
+      template = find_template(name, path)
+
+      [template]
+    end
+
+    def find_template(name, path)
+      ActionView::Template.new(
+        "",
+        name,
+        lambda { |_template| %("Dynamic template with path '#{_template.virtual_path}'") },
+        :virtual_path => path,
+        :format => :html
+      )
+    end
+  end
+end