1 files changed, 77 insertions, 0 deletions
diff --git a/spec/ruby/shared/fiber/resume.rb b/spec/ruby/shared/fiber/resume.rb
new file mode 100644
index 0000000000..304cd88de1
--- /dev/null
+++ b/spec/ruby/shared/fiber/resume.rb
@@ -0,0 +1,77 @@
+describe :fiber_resume, shared: true do
+  it "can be invoked from the root Fiber" do
+   fiber = Fiber.new { :fiber }
+   fiber.send(@method).should == :fiber
+  end
+
+  it "raises a FiberError if invoked from a different Thread" do
+    fiber = Fiber.new { }
+    lambda do
+      Thread.new do
+        fiber.resume
+      end.join
+    end.should raise_error(FiberError)
+    fiber.resume
+  end
+
+  it "passes control to the beginning of the block on first invocation" do
+    invoked = false
+    fiber = Fiber.new { invoked = true }
+    fiber.send(@method)
+    invoked.should be_true
+  end
+
+  it "returns the last value encountered on first invocation" do
+    fiber = Fiber.new { 1+1; true }
+    fiber.send(@method).should be_true
+  end
+
+  it "runs until the end of the block" do
+    obj = mock('obj')
+    obj.should_receive(:do).once
+    fiber = Fiber.new { 1 + 2; a = "glark"; obj.do }
+    fiber.send(@method)
+  end
+
+  it "runs until Fiber.yield" do
+    obj = mock('obj')
+    obj.should_not_receive(:do)
+    fiber = Fiber.new { 1 + 2; Fiber.yield; obj.do }
+    fiber.send(@method)
+  end
+
+  it "resumes from the last call to Fiber.yield on subsequent invocations" do
+    fiber = Fiber.new { Fiber.yield :first; :second }
+    fiber.send(@method).should == :first
+    fiber.send(@method).should == :second
+  end
+
+  it "accepts any number of arguments" do
+    fiber = Fiber.new { |a| }
+    lambda { fiber.send(@method, *(1..10).to_a) }.should_not raise_error
+  end
+
+  it "sets the block parameters to its arguments on the first invocation" do
+    first = mock('first')
+    first.should_receive(:arg).with(:first).twice
+    fiber = Fiber.new { |arg| first.arg arg; Fiber.yield; first.arg arg; }
+    fiber.send(@method, :first)
+    fiber.send(@method, :second)
+  end
+
+  it "raises a FiberError if the Fiber is dead" do
+    fiber = Fiber.new { true }
+    fiber.send(@method)
+    lambda { fiber.send(@method) }.should raise_error(FiberError)
+  end
+
+  it "raises a LocalJumpError if the block includes a return statement" do
+    fiber = Fiber.new { return; }
+    lambda { fiber.send(@method) }.should raise_error(LocalJumpError)
+  end
+
+  it "raises a LocalJumpError if the block includes a break statement" do
+    fiber = Fiber.new { break; }
+    lambda { fiber.send(@method) }.should raise_error(LocalJumpError)
+  end
+end