From a5780a9a67efb8ccd82b5007fdb2c2e7c582d295 Mon Sep 17 00:00:00 2001
From: John Keiser <john@johnkeiser.com>
Date: Tue, 29 Sep 2015 14:09:03 -0700
Subject: Make sure name_attribute works on derived properties

---
 lib/chef/property.rb       |  8 +++++++-
 spec/unit/property_spec.rb | 48 ++++++++++++++++++++++++++++++++++++++++++++--
 2 files changed, 53 insertions(+), 3 deletions(-)

diff --git a/lib/chef/property.rb b/lib/chef/property.rb
index 2b151b350a..b8d8005655 100644
--- a/lib/chef/property.rb
+++ b/lib/chef/property.rb
@@ -422,7 +422,13 @@ class Chef
     # @return [Property] The new property type.
     #
     def derive(**modified_options)
-      Property.new(**options.merge(**modified_options))
+      # Since name_property and name_attribute are aliases, if you specify either
+      # one in modified_options it overrides anything in original options.
+      options = self.options
+      if modified_options.has_key?(:name_property) || modified_options.has_key?(:name_attribute)
+        options = options.reject { |k,v| k == :name_attribute || k == :name_property }
+      end
+      Property.new(options.merge(modified_options))
     end
 
     #
diff --git a/spec/unit/property_spec.rb b/spec/unit/property_spec.rb
index 64638d9be9..456da89dcf 100644
--- a/spec/unit/property_spec.rb
+++ b/spec/unit/property_spec.rb
@@ -107,6 +107,44 @@ describe "Chef::Resource.property" do
     end
   end
 
+  with_property ":x, name_property: true" do
+    context "and subclass" do
+      let(:subresource_class) do
+        new_resource_name = self.class.new_resource_name
+        Class.new(resource_class) do
+          resource_name new_resource_name
+        end
+      end
+      let(:subresource) do
+        subresource_class.new('blah')
+      end
+
+      context "with property :x on the subclass" do
+        before do
+          subresource_class.class_eval do
+            property :x
+          end
+        end
+
+        it "x is still name_property" do
+          expect(subresource.x).to eq 'blah'
+        end
+      end
+
+      context "with property :x, name_attribute: false on the subclass" do
+        before do
+          subresource_class.class_eval do
+            property :x, name_attribute: false
+          end
+        end
+
+        it "x is no longer name_property" do
+          expect(subresource.x).to be_nil
+        end
+      end
+    end
+  end
+
   with_property ":x, Integer" do
     context "and subclass" do
       let(:subresource_class) do
@@ -1031,8 +1069,14 @@ describe "Chef::Resource.property" do
     end
   end
 
-  it "raises an error if both name_property and name_attribute are specified (even if they are false or nil)" do
-    expect { resource_class.property :x, :name_property => false, :name_attribute => true }.to raise_error ArgumentError,
+  it "raises an error if both name_property and name_attribute are specified" do
+    expect { resource_class.property :x, :name_property => false, :name_attribute => 1 }.to raise_error ArgumentError,
+      /Cannot specify both name_property and name_attribute together on property x of resource chef_resource_property_spec_(\d+)./
+    expect { resource_class.property :x, :name_property => false, :name_attribute => nil }.to raise_error ArgumentError,
+      /Cannot specify both name_property and name_attribute together on property x of resource chef_resource_property_spec_(\d+)./
+    expect { resource_class.property :x, :name_property => false, :name_attribute => false }.to raise_error ArgumentError,
+      /Cannot specify both name_property and name_attribute together on property x of resource chef_resource_property_spec_(\d+)./
+    expect { resource_class.property :x, :name_property => true, :name_attribute => true }.to raise_error ArgumentError,
       /Cannot specify both name_property and name_attribute together on property x of resource chef_resource_property_spec_(\d+)./
   end
 end
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