1 files changed, 8 insertions, 1 deletions
diff --git a/railties/test/application/assets_test.rb b/railties/test/application/assets_test.rb
index e5503b1eff..34432eac3a 100644
--- a/railties/test/application/assets_test.rb
+++ b/railties/test/application/assets_test.rb
@@ -41,6 +41,7 @@ module ApplicationTests
     end
 
     test "assets routes have higher priority" do
+      app_file "app/assets/images/rails.png", "notactuallyapng"
       app_file "app/assets/javascripts/demo.js.erb", "a = <%= image_path('rails.png').inspect %>;"
 
       app_file 'config/routes.rb', <<-RUBY
@@ -222,6 +223,7 @@ module ApplicationTests
     end
 
     test "precompile properly refers files referenced with asset_path and runs in the provided RAILS_ENV" do
+      app_file "app/assets/images/rails.png", "notactuallyapng"
       app_file "app/assets/stylesheets/application.css.erb", "<%= asset_path('rails.png') %>"
       # digest is default in false, we must enable it for test environment
       add_to_env_config "test", "config.assets.digest = true"
@@ -233,6 +235,8 @@ module ApplicationTests
     end
 
     test "precompile shouldn't use the digests present in manifest.json" do
+      app_file "app/assets/images/rails.png", "notactuallyapng"
+
       app_file "app/assets/stylesheets/application.css.erb", "//= depend_on rails.png\np { url: <%= asset_path('rails.png') %> }"
 
       ENV["RAILS_ENV"] = "production"
@@ -251,6 +255,7 @@ module ApplicationTests
     end
 
     test "precompile appends the md5 hash to files referenced with asset_path and run in production with digest true" do
+      app_file "app/assets/images/rails.png", "notactuallyapng"
       app_file "app/assets/stylesheets/application.css.erb", "<%= asset_path('rails.png') %>"
       add_to_config "config.assets.compile = true"
       add_to_config "config.assets.digest = true"
@@ -272,7 +277,7 @@ module ApplicationTests
 
       manifest = Dir["#{app_path}/public/assets/manifest-*.json"].first
       assets = ActiveSupport::JSON.decode(File.read(manifest))
-      assert asset_path = assets["assets"].find { |(k, _)| k !~ /rails.png/ && k =~ /.png/ }[1]
+      assert asset_path = assets["assets"].find { |(k, _)| k && k =~ /.png/ }[1]
 
       require "#{app_path}/config/environment"
 
@@ -431,6 +436,7 @@ module ApplicationTests
     end
 
     test "asset urls should be protocol-relative if no request is in scope" do
+      app_file "app/assets/images/rails.png", "notreallyapng"
       app_file "app/assets/javascripts/image_loader.js.erb", 'var src="<%= image_path("rails.png") %>";'
       add_to_config "config.assets.precompile = %w{image_loader.js}"
       add_to_config "config.asset_host = 'example.com'"
@@ -441,6 +447,7 @@ module ApplicationTests
 
     test "asset paths should use RAILS_RELATIVE_URL_ROOT by default" do
       ENV["RAILS_RELATIVE_URL_ROOT"] = "/sub/uri"
+      app_file "app/assets/images/rails.png", "notreallyapng"
 
       app_file "app/assets/javascripts/app.js.erb", 'var src="<%= image_path("rails.png") %>";'
       add_to_config "config.assets.precompile = %w{app.js}"