gnu: ruby-yard: Disable failing test.

* gnu/packages/ruby.scm (ruby-yard)[arguments]: Disable test which fails on
Ruby 2.3.0.

gnu/packages/ruby.scm

@@ -2776,9 +2776,17 @@ features such as filtering and fine grained logging.")
      `(#:test-target "specs"
        #:phases
        (modify-phases %standard-phases
-         (add-before 'check 'set-HOME
+         (add-before 'check 'set-HOME-and-disable-failing-test
+           (lambda _
              ;; $HOME needs to be set to somewhere writeable for tests to run
-          (lambda _ (setenv "HOME" "/tmp") #t)))))
+             (setenv "HOME" "/tmp")
+             ;; Disable tests which fails on Ruby 2.3.  See
+             ;; https://github.com/lsegal/yard/issues/927
+             (substitute* "spec/parser/ruby/ruby_parser_spec.rb"
+               (("comment.type.should == :comment") "")
+               (("comment.docstring_hash_flag.should be_true") "")
+               (("comment.docstring.strip.should == .*") ""))
+             #t)))))
     (native-inputs
      `(("ruby-rspec" ,ruby-rspec-2)
        ("ruby-rack" ,ruby-rack)))