gnu: emacs-evil-surround: Enable tests.

* gnu/packages/emacs-xyz.scm (emacs-evil-surround): Enable tests.

gnu/packages/emacs-xyz.scm

@@ -8931,6 +8931,9 @@ (define-public emacs-evil-surround
     (build-system emacs-build-system)
     (propagated-inputs
      `(("emacs-evil" ,emacs-evil)))
+    (arguments
+     `(#:tests? #t
+       #:test-command '("make" "test")))
     (home-page "https://github.com/emacs-evil/evil-surround")
     (synopsis "Easily modify surrounding parentheses and quotes")
     (description "@code{emacs-evil-surround} allows easy deletion, change and