update tests for react_ujs dependency

Author: rmosolgo

test/react/server_rendering/exec_js_renderer_test.rb

@@ -5,18 +5,19 @@
 var React = {
   createElement: function() {},
 }
-var ReactDOMServer = {
-  renderToString: function() {
-    return 'renderToString was called'
+var ReactRailsUJS = {
+  serverRender: function() {
+    return 'serverRender was called'
   },
 }
 "
 
 class ExecJSRendererTest < ActiveSupport::TestCase
   setup do
     react_server_source = File.read(File.expand_path("../../../../lib/assets/react-source/production/react-server.js", __FILE__))
+    react_ujs_source = File.read(File.expand_path("../../../../lib/assets/javascripts/react_ujs.js", __FILE__))
     todo_component_source = File.read(File.expand_path("../../../dummy/app/assets/javascripts/components/PlainJSTodo.js", __FILE__))
-    code = react_server_source + todo_component_source
+    code = react_server_source + react_ujs_source + todo_component_source
     @renderer = React::ServerRendering::ExecJSRenderer.new(code: code)
   end
 
@@ -70,6 +71,6 @@ def @renderer.after_render(name, props, opts)
   test '.new accepts code:' do
     dummy_renderer = React::ServerRendering::ExecJSRenderer.new(code: DUMMY_IMPLEMENTATION)
     result = dummy_renderer.render("Todo", {todo: "get a real job"}.to_json, {})
-    assert_equal("renderToString was called", result)
+    assert_equal("serverRender was called", result)
   end
 end

test/react/server_rendering/sprockets_renderer_test.rb

@@ -86,7 +86,7 @@ class SprocketsRendererTest < ActiveSupport::TestCase
     end
 
     test '.new accepts any filenames' do
-      limited_renderer = React::ServerRendering::SprocketsRenderer.new(files: ["react-server.js", "components/Todo.js"])
+      limited_renderer = React::ServerRendering::SprocketsRenderer.new(files: ["react-server.js", "react_ujs.js", "components/Todo.js"])
       assert_match(/get a real job<\/li>/, limited_renderer.render("Todo", {todo: "get a real job"}, nil))
       err = assert_raises React::ServerRendering::PrerenderError do
         limited_renderer.render("TodoList", {todos: []}, nil)
@@ -96,7 +96,7 @@ class SprocketsRendererTest < ActiveSupport::TestCase
 
     test '#render returns html when config.assets.compile is false' do
       begin
-        legacy_rendering_files = ["react-server.js", "components.js"]
+        legacy_rendering_files = ["react-server.js", "react_ujs.js", "components.js"]
         Rails.application.config.assets.precompile += legacy_rendering_files
 
         precompile_assets