3 files changed, 13 insertions, 3 deletions
diff --git a/spec/ruby/library/monitor/exit_spec.rb b/spec/ruby/library/monitor/exit_spec.rb
new file mode 100644
index 0000000000..0748a523ac
--- /dev/null
+++ b/spec/ruby/library/monitor/exit_spec.rb
@@ -0,0 +1,10 @@
+require_relative '../../spec_helper'
+require 'monitor'
+
+describe "Monitor#exit" do
+  it "raises ThreadError when monitor is not entered" do
+    m = Monitor.new
+
+    -> { m.exit }.should.raise(ThreadError)
+  end
+end
diff --git a/spec/ruby/library/monitor/mon_initialize_spec.rb b/spec/ruby/library/monitor/mon_initialize_spec.rb
index e0fe6c2d97..092aee929c 100644
--- a/spec/ruby/library/monitor/mon_initialize_spec.rb
+++ b/spec/ruby/library/monitor/mon_initialize_spec.rb
@@ -26,6 +26,6 @@ describe "MonitorMixin#mon_initialize" do
 
     instance = cls.new(1, 2, 3)
     copy = instance.dup
-    copy.should_not equal(instance)
+    copy.should_not.equal?(instance)
   end
 end
diff --git a/spec/ruby/library/monitor/synchronize_spec.rb b/spec/ruby/library/monitor/synchronize_spec.rb
index d78393eb3a..27cc1258b4 100644
--- a/spec/ruby/library/monitor/synchronize_spec.rb
+++ b/spec/ruby/library/monitor/synchronize_spec.rb
@@ -31,11 +31,11 @@ describe "Monitor#synchronize" do
   end
 
   it "raises a LocalJumpError if not passed a block" do
-    -> { Monitor.new.synchronize }.should raise_error(LocalJumpError)
+    -> { Monitor.new.synchronize }.should.raise(LocalJumpError)
   end
 
   it "raises a thread error if the monitor is not owned on exiting the block" do
     monitor = Monitor.new
-    -> { monitor.synchronize { monitor.exit } }.should raise_error(ThreadError)
+    -> { monitor.synchronize { monitor.exit } }.should.raise(ThreadError)
   end
 end