Add C interface spec.

1 files changed, 38 insertions, 0 deletions

diff --git a/spec/ruby/optional/capi/fiber_spec.rb b/spec/ruby/optional/capi/fiber_spec.rb
index 196ddc45fb..92bac22d1a 100644
--- a/spec/ruby/optional/capi/fiber_spec.rb
+++ b/spec/ruby/optional/capi/fiber_spec.rb
@@ -48,4 +48,42 @@ describe "C-API Fiber function" do
       fiber.resume(42).should == "42"
     end
   end
+
+  describe "rb_fiber_raise" do
+    ruby_version_is '3.1' do
+      it "raises an exception on the resumed fiber" do
+        fiber = Fiber.new do
+          begin
+            Fiber.yield
+          rescue => error
+            error
+          end
+        end
+
+        fiber.resume
+
+        result = @s.rb_fiber_raise(fiber, "Boom!")
+        result.should be_an_instance_of(RuntimeError)
+        result.message.should == "Boom!"
+      end
+
+      it "raises an exception on the transferred fiber" do
+        main = Fiber.current
+
+        fiber = Fiber.new do
+          begin
+            main.transfer
+          rescue => error
+            error
+          end
+        end
+
+        fiber.transfer
+
+        result = @s.rb_fiber_raise(fiber, "Boom!")
+        result.should be_an_instance_of(RuntimeError)
+        result.message.should == "Boom!"
+      end
+    end
+  end
 end