test: verify the contents of tailwind.css in integration test

Author: flavorjones

test/integration/user_journey_test.sh

@@ -55,3 +55,9 @@ fi
 # TEST: presence of the generated file
 bin/rails generate scaffold post title:string body:text published:boolean
 grep -q "Show this post" app/views/posts/index.html.erb
+
+# TEST: contents of the css file
+bin/rails tailwindcss:build[verbose]
+grep -q "py-2" app/assets/builds/tailwind.css
+
+echo "OK"