Move cache_path (and compilation_digest_path) out of default Rails.cache.cache_path (#3002)

Author: razum2um

lib/install/config/webpacker.yml

@@ -5,7 +5,7 @@ default: &default
   source_entry_path: entrypoints
   public_root_path: public
   public_output_path: packs
-  cache_path: tmp/cache/webpacker
+  cache_path: tmp/webpacker
   webpack_compile_output: true
 
   # Additional paths webpack should look up modules

test/configuration_test.rb

@@ -44,7 +44,7 @@ def test_public_manifest_path
   end
 
   def test_cache_path
-    cache_path = File.expand_path File.join(File.dirname(__FILE__), "test_app/tmp/cache/webpacker").to_s
+    cache_path = File.expand_path File.join(File.dirname(__FILE__), "test_app/tmp/webpacker").to_s
     assert_equal @config.cache_path.to_s, cache_path
   end
 

test/mounted_app/test/dummy/config/webpacker.yml

@@ -4,7 +4,7 @@ default: &default
   source_path: app/packs
   source_entry_path: entrypoints
   public_output_path: packs
-  cache_path: tmp/cache/webpacker
+  cache_path: tmp/webpacker
 
   # Additional paths webpack should look up modules
   # ['app/assets', 'engine/foo/app/assets']

test/test_app/config/webpacker.yml

@@ -5,7 +5,7 @@ default: &default
   source_entry_path: entrypoints
   public_root_path: public
   public_output_path: packs
-  cache_path: tmp/cache/webpacker
+  cache_path: tmp/webpacker
   webpack_compile_output: false
 
   # Additional paths webpack should look up modules