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/socket/tcpserver/accept_nonblock_spec.rb

@@ -0,0 +1,50 @@
+require File.expand_path('../../../../spec_helper', __FILE__)
+require File.expand_path('../../fixtures/classes', __FILE__)
+
+describe "Socket::TCPServer.accept_nonblock" do
+  before :each do
+    @server = TCPServer.new("127.0.0.1", 0)
+    @port = @server.addr[1]
+  end
+
+  after :each do
+    @server.close unless @server.closed?
+  end
+
+  it "accepts non blocking connections" do
+    @server.listen(5)
+    lambda {
+      @server.accept_nonblock
+    }.should raise_error(IO::WaitReadable)
+
+    c = TCPSocket.new("127.0.0.1", @port)
+    sleep 0.1
+    s = @server.accept_nonblock
+
+    port, address = Socket.unpack_sockaddr_in(s.getsockname)
+
+    port.should == @port
+    address.should == "127.0.0.1"
+    s.should be_kind_of(TCPSocket)
+
+    c.close
+    s.close
+  end
+
+  it "raises an IOError if the socket is closed" do
+    @server.close
+    lambda { @server.accept }.should raise_error(IOError)
+  end
+
+  describe 'without a connected client' do
+    it 'raises error' do
+      lambda { @server.accept_nonblock }.should raise_error(IO::WaitReadable)
+    end
+
+    ruby_version_is '2.3' do
+      it 'returns :wait_readable in exceptionless mode' do
+        @server.accept_nonblock(exception: false).should == :wait_readable
+      end
+    end
+  end
+end