Add PyObjectWrapper#kind_of?

Author: mrkn

lib/pycall/pyobject_wrapper.rb

@@ -51,6 +51,15 @@ def respond_to_missing?(name, include_private)
       super
     end
 
+    def kind_of?(cls)
+      case cls
+      when PyTypeObjectWrapper
+        __pyptr__.kind_of?(cls.__pyptr__)
+      else
+        super
+      end
+    end
+
     [:==, :!=, :<, :<=, :>, :>=].each do |op|
       class_eval("#{<<-"begin;"}\n#{<<-"end;"}", __FILE__, __LINE__+1)
       begin;

spec/pycall/conversion_spec.rb

@@ -16,9 +16,9 @@ module PyCall
       end
 
       it 'returns true and registers a given type mapping' do
-        expect(LibPython::Helpers.call_object(python_class)).not_to be_a(wrapper_class)
+        expect(LibPython::Helpers.call_object(python_class).class).not_to eq(wrapper_class)
         expect(Conversion.register_python_type_mapping(python_class, wrapper_class)).to eq(true)
-        expect(LibPython::Helpers.call_object(python_class)).to be_a(wrapper_class)
+        expect(LibPython::Helpers.call_object(python_class).class).to eq(wrapper_class)
       end
 
       context 'when no type mapping for a given Python type is registered' do
@@ -70,7 +70,7 @@ module PyCall
       it 'returns true and unregisters the type mapping for a given Python type' do
         Conversion.register_python_type_mapping(python_class, wrapper_class)
         expect(Conversion.unregister_python_type_mapping(python_class)).to eq(true)
-        expect(LibPython::Helpers.call_object(python_class)).not_to be_a(wrapper_class)
+        expect(LibPython::Helpers.call_object(python_class).class).not_to eq(wrapper_class)
       end
 
       context 'when the type mapping for a given Python type is not registered' do