Move spec/rubyspec to spec/ruby for consistency

* Other ruby implementations use the spec/ruby directory.
  [Misc #13792] [ruby-core:82287]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@59979 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

spec/ruby/library/fiber/alive_spec.rb

@@ -0,0 +1,48 @@
+require File.expand_path('../../../spec_helper', __FILE__)
+
+with_feature :fiber_library do
+  require 'fiber'
+
+  describe "Fiber#alive?" do
+    it "returns true for a Fiber that hasn't had #resume called" do
+      fiber = Fiber.new { true }
+      fiber.alive?.should be_true
+    end
+
+    # FIXME: Better description?
+    it "returns true for a Fiber that's yielded to the caller" do
+      fiber = Fiber.new { Fiber.yield }
+      fiber.resume
+      fiber.alive?.should be_true
+    end
+
+    it "returns true when called from its Fiber" do
+      fiber = Fiber.new { fiber.alive?.should be_true }
+      fiber.resume
+    end
+
+    it "doesn't invoke the block associated with the Fiber" do
+      offthehook = mock('do not call')
+      offthehook.should_not_receive(:ring)
+      fiber = Fiber.new { offthehook.ring }
+      fiber.alive?
+    end
+
+    it "returns false for a Fiber that's dead" do
+      fiber = Fiber.new { true }
+      fiber.resume
+      lambda { fiber.resume }.should raise_error(FiberError)
+      fiber.alive?.should be_false
+    end
+
+    it "always returns false for a dead Fiber" do
+      fiber = Fiber.new { true }
+      fiber.resume
+      lambda { fiber.resume }.should raise_error(FiberError)
+      fiber.alive?.should be_false
+      lambda { fiber.resume }.should raise_error(FiberError)
+      fiber.alive?.should be_false
+      fiber.alive?.should be_false
+    end
+  end
+end