1 files changed, 76 insertions, 0 deletions
diff --git a/spec/ruby/core/fiber/raise_spec.rb b/spec/ruby/core/fiber/raise_spec.rb
new file mode 100644
index 0000000000..fd1cc911b5
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+++ b/spec/ruby/core/fiber/raise_spec.rb
@@ -0,0 +1,76 @@
+require_relative '../../spec_helper'
+require_relative 'fixtures/classes'
+require_relative '../../shared/kernel/raise'
+
+ruby_version_is "2.7" do
+  describe "Fiber#raise" do
+    it_behaves_like :kernel_raise, :raise, FiberSpecs::NewFiberToRaise
+  end
+
+  describe "Fiber#raise" do
+    it 'raises RuntimeError by default' do
+      -> { FiberSpecs::NewFiberToRaise.raise }.should raise_error(RuntimeError)
+    end
+
+    it "raises FiberError if Fiber is not born" do
+      fiber = Fiber.new { true }
+      -> { fiber.raise }.should raise_error(FiberError, "cannot raise exception on unborn fiber")
+    end
+
+    it "raises FiberError if Fiber is dead" do
+      fiber = Fiber.new { true }
+      fiber.resume
+      -> { fiber.raise }.should raise_error(FiberError, /dead fiber called|attempt to resume a terminated fiber/)
+    end
+
+    it 'accepts error class' do
+      -> { FiberSpecs::NewFiberToRaise.raise FiberSpecs::CustomError }.should raise_error(FiberSpecs::CustomError)
+    end
+
+    it 'accepts error message' do
+      -> { FiberSpecs::NewFiberToRaise.raise "error message" }.should raise_error(RuntimeError, "error message")
+    end
+
+    it 'does not accept array of backtrace information only' do
+      -> { FiberSpecs::NewFiberToRaise.raise ['foo'] }.should raise_error(TypeError)
+    end
+
+    it 'does not accept integer' do
+      -> { FiberSpecs::NewFiberToRaise.raise 100 }.should raise_error(TypeError)
+    end
+
+    it 'accepts error class with error message' do
+      -> { FiberSpecs::NewFiberToRaise.raise FiberSpecs::CustomError, 'test error' }.should raise_error(FiberSpecs::CustomError, 'test error')
+    end
+
+    it 'accepts error class with with error message and backtrace information' do
+      -> {
+        FiberSpecs::NewFiberToRaise.raise FiberSpecs::CustomError, 'test error', ['foo', 'boo']
+      }.should raise_error(FiberSpecs::CustomError) { |e|
+        e.message.should == 'test error'
+        e.backtrace.should == ['foo', 'boo']
+      }
+    end
+
+    it 'does not accept only error message and backtrace information' do
+      -> { FiberSpecs::NewFiberToRaise.raise 'test error', ['foo', 'boo'] }.should raise_error(TypeError)
+    end
+
+    it "raises a FiberError if invoked from a different Thread" do
+      fiber = Fiber.new { Fiber.yield }
+      fiber.resume
+      Thread.new do
+        -> {
+          fiber.raise
+        }.should raise_error(FiberError, "fiber called across threads")
+      end.join
+    end
+
+    it "kills Fiber" do
+      fiber = Fiber.new { Fiber.yield :first; :second }
+      fiber.resume
+      -> { fiber.raise }.should raise_error
+      -> { fiber.resume }.should raise_error(FiberError, /dead fiber called|attempt to resume a terminated fiber/)
+    end
+  end
+end