Spec rb_keyword_given_p()

Author: eregon

spec/ruby/optional/capi/ext/kernel_spec.c

@@ -326,6 +326,10 @@ static VALUE kernel_spec_rb_funcallv(VALUE self, VALUE obj, VALUE method, VALUE
 static VALUE kernel_spec_rb_funcallv_kw(VALUE self, VALUE obj, VALUE method, VALUE args) {
   return rb_funcallv_kw(obj, SYM2ID(method), RARRAY_LENINT(args), RARRAY_PTR(args), RB_PASS_KEYWORDS);
 }
+
+static VALUE kernel_spec_rb_keyword_given_p(int argc, VALUE *args, VALUE self) {
+  return rb_keyword_given_p() ? Qtrue : Qfalse;
+}
 #endif
 
 static VALUE kernel_spec_rb_funcallv_public(VALUE self, VALUE obj, VALUE method) {
@@ -384,6 +388,7 @@ void Init_kernel_spec(void) {
   rb_define_method(cls, "rb_funcallv", kernel_spec_rb_funcallv, 3);
 #ifdef RUBY_VERSION_IS_3_0
   rb_define_method(cls, "rb_funcallv_kw", kernel_spec_rb_funcallv_kw, 3);
+  rb_define_method(cls, "rb_keyword_given_p", kernel_spec_rb_keyword_given_p, -1);
 #endif
   rb_define_method(cls, "rb_funcallv_public", kernel_spec_rb_funcallv_public, 2);
   rb_define_method(cls, "rb_funcall_many_args", kernel_spec_rb_funcall_many_args, 2);

spec/ruby/optional/capi/kernel_spec.rb

@@ -605,6 +605,23 @@ def m(*args, **kwargs)
         }.should raise_error(TypeError, 'no implicit conversion of Integer into Hash')
       end
     end
+
+    describe "rb_keyword_given_p" do
+      it "returns whether keywords were given to the C extension method" do
+        h = {a: 1}
+        empty = {}
+        @s.rb_keyword_given_p(a: 1).should == true
+        @s.rb_keyword_given_p("foo" => "bar").should == true
+        @s.rb_keyword_given_p(**h).should == true
+
+        @s.rb_keyword_given_p(h).should == false
+        @s.rb_keyword_given_p().should == false
+        @s.rb_keyword_given_p(**empty).should == false
+
+        @s.rb_funcallv_kw(@s, :rb_keyword_given_p, [{a: 1}]).should == true
+        @s.rb_funcallv_kw(@s, :rb_keyword_given_p, [{}]).should == false
+      end
+    end
   end
 
   describe "rb_funcallv_public" do