Add Fiber#kill, similar to Thread#kill. (#7823)

1 files changed, 90 insertions, 0 deletions

diff --git a/spec/ruby/core/fiber/kill_spec.rb b/spec/ruby/core/fiber/kill_spec.rb
new file mode 100644
index 0000000000..2f4c499280
--- /dev/null
+++ b/spec/ruby/core/fiber/kill_spec.rb
@@ -0,0 +1,90 @@
+require_relative '../../spec_helper'
+require_relative 'fixtures/classes'
+require_relative '../../shared/kernel/raise'
+
+ruby_version_is "3.3" do
+  describe "Fiber#kill" do
+    it "kills a non-resumed fiber" do
+      fiber = Fiber.new{}
+
+      fiber.alive?.should == true
+
+      fiber.kill
+      fiber.alive?.should == false
+    end
+
+    it "kills a resumed fiber" do
+      fiber = Fiber.new{while true; Fiber.yield; end}
+      fiber.resume
+
+      fiber.alive?.should == true
+
+      fiber.kill
+      fiber.alive?.should == false
+    end
+
+    it "can kill itself" do
+      fiber = Fiber.new do
+        Fiber.current.kill
+      end
+
+      fiber.alive?.should == true
+
+      fiber.resume
+      fiber.alive?.should == false
+    end
+
+    it "kills a resumed fiber from a child" do
+      parent = Fiber.new do
+        child = Fiber.new do
+          parent.kill
+          parent.alive?.should == true
+        end
+
+        child.resume
+      end
+
+      parent.resume
+      parent.alive?.should == false
+    end
+
+    it "executes the ensure block" do
+      ensure_executed = false
+
+      fiber = Fiber.new do
+        while true; Fiber.yield; end
+      ensure
+        ensure_executed = true
+      end
+
+      fiber.resume
+      fiber.kill
+      ensure_executed.should == true
+    end
+
+    it "does not execute rescue block" do
+      rescue_executed = false
+
+      fiber = Fiber.new do
+        while true; Fiber.yield; end
+      rescue Exception
+        rescue_executed = true
+      end
+
+      fiber.resume
+      fiber.kill
+      rescue_executed.should == false
+    end
+
+    it "repeatedly kills a fiber" do
+      fiber = Fiber.new do
+        while true; Fiber.yield; end
+      ensure
+        while true; Fiber.yield; end
+      end
+
+      fiber.kill
+      fiber.alive?.should == false
+    end
+  end
+end