Merge branch 'tamuratak-fix_ruby_null_shared_ptr'

* tamuratak-fix_ruby_null_shared_ptr:
  [ruby] add a test.
  [ruby] use std::vector::back() method.
  [ruby] enable a test for null shared_ptr in containers.
  [ruby] add a test for null shared_ptr in containers.
  [ruby] treat null shared_ptr in std containers properly.

Conflicts:
	Examples/test-suite/ruby/Makefile.in

Examples/test-suite/ruby/Makefile.in

@@ -33,8 +33,9 @@ CPP_TEST_CASES = \
 
 CPP11_TEST_CASES = \
 	cpp11_hash_tables \
-	cpp11_shared_ptr_upcast \
 	cpp11_shared_ptr_const \
+	cpp11_shared_ptr_nullptr_in_containers \
+	cpp11_shared_ptr_upcast \
 
 C_TEST_CASES += \
 	li_cstring \

Examples/test-suite/ruby/cpp11_shared_ptr_nullptr_in_containers_runme.rb

@@ -0,0 +1,16 @@
+require "cpp11_shared_ptr_nullptr_in_containers"
+
+include Cpp11_shared_ptr_nullptr_in_containers
+
+a = ret_vec_c_shared_ptr()
+raise unless a[0].get_m == 0
+raise unless a[1]       == nil
+raise unless a[2].get_m == 2
+
+a = ret_arg_vec([C.new(7), nil, C.new(9)])
+raise unless a[0].get_m == 7
+raise unless a[1]       == nil
+raise unless a[2].get_m == 9
+
+raise unless is_last_null([C.new(7), C.new(8), nil])
+raise if is_last_null([C.new(7), C.new(8)])