From 5fb9d1e11fc50df359a1f9d2537a11f13cdb6d33 Mon Sep 17 00:00:00 2001
From: samuel <samuel@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Fri, 28 Dec 2018 13:03:09 +0000
Subject: Implement Fiber#raise. Fixes #10344.

This allows raising exceptions in another fiber, similarly to
Thread#raise.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@66610 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 test/ruby/test_fiber.rb | 40 ++++++++++++++++++++++++++++++++++++++++
 1 file changed, 40 insertions(+)

(limited to 'test')

diff --git a/test/ruby/test_fiber.rb b/test/ruby/test_fiber.rb
index 84d668c988..db2627d9a1 100644
--- a/test/ruby/test_fiber.rb
+++ b/test/ruby/test_fiber.rb
@@ -109,6 +109,15 @@ class TestFiber < Test::Unit::TestCase
       }
       fib.resume
     }
+    assert_raise(FiberError){
+      fib = Fiber.new{}
+      fib.raise "raise in unborn fiber"
+    }
+    assert_raise(FiberError){
+      fib = Fiber.new{}
+      fib.resume
+      fib.raise "raise in dead fiber"
+    }
   end
 
   def test_return
@@ -127,6 +136,37 @@ class TestFiber < Test::Unit::TestCase
     }
   end
 
+  def test_raise
+    assert_raise(ZeroDivisionError){
+      Fiber.new do
+        1/0
+      end.resume
+    }
+    assert_raise(RuntimeError){
+      fib = Fiber.new{ Fiber.yield }
+      fib.raise "raise and propagate"
+    }
+    assert_nothing_raised{
+      fib = Fiber.new do
+        begin
+          Fiber.yield
+        rescue
+        end
+      end
+      fib.resume
+      fib.raise "rescue in fiber"
+    }
+    fib = Fiber.new do
+      begin
+        Fiber.yield
+      rescue
+        Fiber.yield :ok
+      end
+    end
+    fib.resume
+    assert_equal(:ok, fib.raise)
+  end
+
   def test_transfer
     ary = []
     f2 = nil
-- 
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