Extra initialization of civars in Resource.

This removes about 500 lines of warnings per run of a simple test
file. About 33% reduction.

Signed-off-by: Ryan Davis <zenspider@chef.io>

1 files changed, 7 insertions, 2 deletions

diff --git a/lib/chef/resource.rb b/lib/chef/resource.rb
index 6c7214fdd9..38921334ba 100644
--- a/lib/chef/resource.rb
+++ b/lib/chef/resource.rb
@@ -965,6 +965,8 @@ class Chef
           @resource_name = nil
         end
       end
+
+      @resource_name = nil unless defined?(@resource_name)
       @resource_name
     end
 
@@ -990,7 +992,7 @@ class Chef
     # @param flag [Boolean] value to set unified_mode to
     # @return [Boolean] unified_mode value
     def self.unified_mode(flag = nil)
-      @unified_mode = Chef::Config[:resource_unified_mode_default] if @unified_mode.nil?
+      @unified_mode = Chef::Config[:resource_unified_mode_default] if !defined?(@unified_mode) || @unified_mode.nil?
       @unified_mode = flag unless flag.nil?
       !!@unified_mode
     end
@@ -1035,7 +1037,7 @@ class Chef
         self.allowed_actions |= @default_action
       end
 
-      if @default_action
+      if defined?(@default_action) && @default_action
         @default_action
       elsif superclass.respond_to?(:default_action)
         superclass.default_action
@@ -1366,6 +1368,9 @@ class Chef
     def self.provides(name, **options, &block)
       name = name.to_sym
 
+      # quell warnings
+      @chef_version_for_provides = nil unless defined?(@chef_version_for_provides)
+
       # `provides :resource_name, os: 'linux'`) needs to remove the old
       # canonical DSL before adding the new one.
       if @resource_name && name == @resource_name