Merge pull request #1066 from rails-api/appveyor

Adding appveyor to the project

lib/active_model/serializer.rb

@@ -12,6 +12,22 @@ module ActiveModel
     include Configuration
     include Associations
 
+
+    # Matches
+    #  "c:/git/emberjs/ember-crm-backend/app/serializers/lead_serializer.rb:1:in `<top (required)>'"
+    #  AND
+    #  "/c/git/emberjs/ember-crm-backend/app/serializers/lead_serializer.rb:1:in `<top (required)>'"
+    #  AS
+    #  c/git/emberjs/ember-crm-backend/app/serializers/lead_serializer.rb
+    CALLER_FILE = /
+      \A       # start of string
+      \S+      # one or more non-spaces
+      (?=      # stop previous match when
+        :\d+     # a colon is followed by one or more digits
+        :in      # followed by a colon followed by in
+      )
+    /x
+
     class << self
       attr_accessor :_attributes
       attr_accessor :_attributes_keys
@@ -29,8 +45,7 @@ module ActiveModel
       base._attributes = self._attributes.try(:dup) || []
       base._attributes_keys = self._attributes_keys.try(:dup) || {}
       base._urls = []
-      serializer_file = File.open(caller.first[/^[^:]+/])
-      base._cache_digest = Digest::MD5.hexdigest(serializer_file.read)
+      base._cache_digest = digest_caller_file(caller.first)
       super
     end
 
@@ -161,6 +176,12 @@ module ActiveModel
       @serializers_cache ||= ThreadSafe::Cache.new
     end
 
+    def self.digest_caller_file(caller_line)
+      serializer_file_path = caller_line[CALLER_FILE]
+      serializer_file_contents = IO.read(serializer_file_path)
+      Digest::MD5.hexdigest(serializer_file_contents)
+    end
+
     attr_reader :options
 
     def self.get_serializer_for(klass)