Add specs for rb_block_lambda()

Author: eregon

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

@@ -26,6 +26,9 @@ VALUE kernel_spec_rb_block_proc(VALUE self) {
   return rb_block_proc();
 }
 
+VALUE kernel_spec_rb_block_lambda(VALUE self) {
+  return rb_block_lambda();
+}
 
 VALUE block_call_inject(VALUE yield_value, VALUE data2) {
   /* yield_value yields the first block argument */
@@ -286,6 +289,7 @@ void Init_kernel_spec(void) {
   rb_define_method(cls, "rb_block_call_multi_arg", kernel_spec_rb_block_call_multi_arg, 1);
   rb_define_method(cls, "rb_block_call_no_func", kernel_spec_rb_block_call_no_func, 1);
   rb_define_method(cls, "rb_block_proc", kernel_spec_rb_block_proc, 0);
+  rb_define_method(cls, "rb_block_lambda", kernel_spec_rb_block_lambda, 0);
   rb_define_method(cls, "rb_frame_this_func_test", kernel_spec_rb_frame_this_func, 0);
   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);

spec/ruby/optional/capi/kernel_spec.rb

@@ -440,6 +440,32 @@ def proc_caller
       proc = @s.rb_block_proc() { 1+1 }
       proc.should be_kind_of(Proc)
       proc.call.should == 2
+      proc.lambda?.should == false
+    end
+
+    it "passes through an existing lambda and does not convert to a proc" do
+      b = -> { 1+1 }
+      proc = @s.rb_block_proc(&b)
+      proc.should equal(b)
+      proc.call.should == 2
+      proc.lambda?.should == true
+    end
+  end
+
+  describe "rb_block_lambda" do
+    it "converts the implicit block into a Proc but does not convert it to a lambda" do
+      proc = @s.rb_block_proc { 1+1 }
+      proc.should be_kind_of(Proc)
+      proc.call.should == 2
+      proc.lambda?.should == false
+    end
+
+    it "passes through an existing Proc and does not convert to a lambda" do
+      b = proc { 1+1 }
+      proc = @s.rb_block_proc(&b)
+      proc.should equal(b)
+      proc.call.should == 2
+      proc.lambda?.should == false
     end
   end