Add specs for rb_eval_cmd_kw.

Author: aardvark179

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

@@ -112,6 +112,10 @@ VALUE kernel_spec_rb_eval_string(VALUE self, VALUE str) {
   return rb_eval_string(RSTRING_PTR(str));
 }
 
+VALUE kernel_spec_rb_eval_cmd_kw(VALUE self, VALUE cmd, VALUE args, VALUE kw_splat) {
+  return rb_eval_cmd_kw(cmd, args, NUM2INT(kw_splat));
+}
+
 VALUE kernel_spec_rb_raise(VALUE self, VALUE hash) {
   rb_hash_aset(hash, ID2SYM(rb_intern("stage")), ID2SYM(rb_intern("before")));
   if (self != Qundef)
@@ -361,6 +365,7 @@ void Init_kernel_spec(void) {
   rb_define_method(cls, "rb_frame_this_func_test_again", kernel_spec_rb_frame_this_func, 0);
   rb_define_method(cls, "rb_ensure", kernel_spec_rb_ensure, 4);
   rb_define_method(cls, "rb_eval_string", kernel_spec_rb_eval_string, 1);
+  rb_define_method(cls, "rb_eval_cmd_kw", kernel_spec_rb_eval_cmd_kw, 3);
   rb_define_method(cls, "rb_raise", kernel_spec_rb_raise, 1);
   rb_define_method(cls, "rb_throw", kernel_spec_rb_throw, 1);
   rb_define_method(cls, "rb_throw_obj", kernel_spec_rb_throw_obj, 2);

spec/ruby/optional/capi/kernel_spec.rb

@@ -504,6 +504,25 @@ def proc_caller
     end
   end
 
+  describe "rb_eval_cmd_kw" do
+    it "evaluates a string of ruby code" do
+      @s.rb_eval_cmd_kw("1+1", [], 0).should == 2
+    end
+
+    it "calls a proc with the supplied arguments" do
+      @s.rb_eval_cmd_kw(-> (*x) { x.map { |i| i + 1 } }, [1, 3, 7], 0).should == [2, 4, 8]
+    end
+
+    it "calls a proc with keyword arguments if kw_splat is non zero" do
+      a_proc = -> (*x, **y) {
+        res = x.map { |i| i + 1 }
+        y.each { |k, v| res << k; res << v }
+        res
+      }
+      @s.rb_eval_cmd_kw(a_proc, [1, 3, 7, {a: 1, b: 2, c: 3}], 1).should == [2, 4, 8, :a, 1, :b, 2, :c, 3]
+    end
+  end
+
   describe "rb_block_proc" do
     it "converts the implicit block into a proc" do
       proc = @s.rb_block_proc { 1+1 }