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/core/exception/errno_spec.rb

@@ -0,0 +1,48 @@
+require File.expand_path('../../../spec_helper', __FILE__)
+require File.expand_path('../fixtures/common', __FILE__)
+
+describe "SystemCallError#errno" do
+  it "needs to be reviewed for spec completeness"
+end
+
+describe "Errno::EINVAL.new" do
+  it "can be called with no arguments" do
+    exc = Errno::EINVAL.new
+    exc.should be_an_instance_of(Errno::EINVAL)
+    exc.errno.should == Errno::EINVAL::Errno
+    exc.message.should == "Invalid argument"
+  end
+
+  it "accepts an optional custom message" do
+    exc = Errno::EINVAL.new('custom message')
+    exc.should be_an_instance_of(Errno::EINVAL)
+    exc.errno.should == Errno::EINVAL::Errno
+    exc.message.should == "Invalid argument - custom message"
+  end
+
+  it "accepts an optional custom message and location" do
+    exc = Errno::EINVAL.new('custom message', 'location')
+    exc.should be_an_instance_of(Errno::EINVAL)
+    exc.errno.should == Errno::EINVAL::Errno
+    exc.message.should == "Invalid argument @ location - custom message"
+  end
+end
+
+describe "Errno::EMFILE" do
+  it "can be subclassed" do
+    ExceptionSpecs::EMFILESub = Class.new(Errno::EMFILE)
+    exc = ExceptionSpecs::EMFILESub.new
+    exc.should be_an_instance_of(ExceptionSpecs::EMFILESub)
+  end
+end
+
+describe "Errno::EAGAIN" do
+  # From http://jira.codehaus.org/browse/JRUBY-4747
+  it "is the same class as Errno::EWOULDBLOCK if they represent the same errno value" do
+    if Errno::EAGAIN::Errno == Errno::EWOULDBLOCK::Errno
+      Errno::EAGAIN.should == Errno::EWOULDBLOCK
+    else
+      Errno::EAGAIN.should_not == Errno::EWOULDBLOCK
+    end
+  end
+end