add rails/convert_rails_test_xhr_4_2_to_5_0 snippet

Author: flyerhzm

lib/rails/convert_rails_test_xhr_4_2_to_5_0.rb

@@ -0,0 +1,26 @@
+# frozen_string_literal: true
+
+Synvert::Rewriter.new 'rails', 'convert_rails_test_xhr_4_2_to_5_0' do
+  description <<~EOS
+    It converts xhr method in rails test from 4.2 to 5.0.
+
+    ```ruby
+    xhr :get, :show
+    ```
+
+    =>
+
+    ```ruby
+    get :show, xhr: true
+    ```
+  EOS
+
+  if_gem 'rails', { gte: '5.0' }
+
+  within_files '{test,spec}/{functional,controllers}/**/*.rb' do
+    with_node type: 'send', receiver: nil, message: 'xhr', arguments: { size: 2 } do
+      method, action = node.arguments.map(&:to_value)
+      replace_with("#{method} :#{action}, xhr: true")
+    end
+  end
+end

lib/rails/upgrade_4_2_to_5_0.rb

@@ -21,6 +21,7 @@
   add_snippet 'rails', 'convert_head_response'
   add_snippet 'rails', 'convert_render_text_to_render_plain'
   add_snippet 'rails', 'convert_rails_test_request_methods_4_2_to_5_0'
+  add_snippet 'rails', 'convert_rails_test_xhr_4_2_to_5_0'
   add_snippet 'rails', 'add_application_record'
   add_snippet 'rails', 'add_application_job'
   add_snippet 'rails', 'convert_after_commit'

spec/rails/convert_rails_test_xhr_4_2_to_5_0_spec.rb

@@ -0,0 +1,32 @@
+# frozen_string_literal: true
+
+require 'spec_helper'
+
+RSpec.describe 'Convert Foo to Bar' do
+  let(:rewriter_name) { 'rails/convert_rails_test_xhr_4_2_to_5_0' }
+  let(:fake_file_path) { 'test/functional/posts_controller_test.rb' }
+  let(:test_content) { <<~EOS }
+    class PostsControllerTest < ActionController::TestCase
+      context "on XHR GET to show" do
+        setup do
+          xhr :get, :show
+        end
+
+        should respond_with :method_not_allowed
+      end
+    end
+  EOS
+  let(:test_rewritten_content) { <<~EOS }
+    class PostsControllerTest < ActionController::TestCase
+      context "on XHR GET to show" do
+        setup do
+          get :show, xhr: true
+        end
+
+        should respond_with :method_not_allowed
+      end
+    end
+  EOS
+
+  include_examples 'convertable'
+end

spec/rails/upgrade_4_2_to_5_0_spec.rb

@@ -114,6 +114,7 @@ def test_load_error
         rails/convert_head_response
         rails/convert_render_text_to_render_plain
         rails/convert_rails_test_request_methods_4_2_to_5_0
+        rails/convert_rails_test_xhr_4_2_to_5_0
         rails/add_application_record
         rails/add_application_job
         rails/convert_after_commit