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+;;; GNU Guix --- Functional package management for GNU
+;;; Copyright © 2012, 2013 Cyril Roelandt <tipecaml@gmail.com>
+;;;
+;;; This file is part of GNU Guix.
+;;;
+;;; GNU Guix is free software; you can redistribute it and/or modify it
+;;; under the terms of the GNU General Public License as published by
+;;; the Free Software Foundation; either version 3 of the License, or (at
+;;; your option) any later version.
+;;;
+;;; GNU Guix is distributed in the hope that it will be useful, but
+;;; WITHOUT ANY WARRANTY; without even the implied warranty of
+;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+;;; GNU General Public License for more details.
+;;;
+;;; You should have received a copy of the GNU General Public License
+;;; along with GNU Guix.  If not, see <http://www.gnu.org/licenses/>.
+
+
+(define-module (test-packages)
+  #:use-module (guix build download)
+  #:use-module (guix build-system gnu)
+  #:use-module (guix packages)
+  #:use-module (guix scripts lint)
+  #:use-module (guix ui)
+  #:use-module (gnu packages)
+  #:use-module (gnu packages pkg-config)
+  #:use-module (srfi srfi-64))
+
+;; Test the linter.
+
+
+(test-begin "lint")
+
+(define-syntax-rule (dummy-package name* extra-fields ...)
+  (package extra-fields ... (name name*) (version "0") (source #f)
+           (build-system gnu-build-system)
+           (synopsis #f) (description #f)
+           (home-page #f) (license #f) ))
+
+(define (call-with-warnings thunk)
+       (let ((port (open-output-string)))
+         (parameterize ((guix-warning-port port))
+           (thunk))
+         (get-output-string port)))
+
+(test-assert "synopsis: ends with a period"
+  (->bool
+   (string-contains (call-with-warnings
+                      (lambda ()
+                        (let ((pkg (dummy-package "x"
+                                     (synopsis "Bad synopsis."))))
+                          (check-synopsis-style pkg))))
+                    "no period allowed at the end of the synopsis")))
+
+(test-assert "synopsis: ends with 'etc.'"
+  (->bool
+   (string-null? (call-with-warnings
+                   (lambda ()
+                     (let ((pkg (dummy-package "x"
+                                  (synopsis "Foo, bar, etc."))))
+                       (check-synopsis-style pkg)))))))
+
+(test-assert "synopsis: starts with 'A'"
+  (->bool
+   (string-contains (call-with-warnings
+                      (lambda ()
+                        (let ((pkg (dummy-package "x"
+                                     (synopsis "A bad synopŝis"))))
+                          (check-synopsis-style pkg))))
+                    "no article allowed at the beginning of the synopsis")))
+
+(test-assert "synopsis: starts with 'An'"
+  (->bool
+   (string-contains (call-with-warnings
+                      (lambda ()
+                        (let ((pkg (dummy-package "x"
+                                     (synopsis "An awful synopsis"))))
+                        (check-synopsis-style pkg))))
+                    "no article allowed at the beginning of the synopsis")))
+
+(test-assert "inputs: pkg-config is probably a native input"
+  (->bool
+   (string-contains
+     (call-with-warnings
+       (lambda ()
+         (let ((pkg (dummy-package "x"
+                      (inputs `(("pkg-config" ,pkg-config))))))
+              (check-inputs-should-be-native pkg))))
+         "pkg-config should probably be a native input")))
+
+(test-assert "patches: file names"
+  (->bool
+   (string-contains
+     (call-with-warnings
+       (lambda ()
+         (let ((pkg (dummy-package "x"
+                      (source
+                       (origin
+                        (method url-fetch)
+                        (uri "someurl")
+                        (sha256 "somesha")
+                        (patches (list "/path/to/y.patch")))))))
+              (check-patches pkg))))
+         "file names of patches should start with the package name")))
+
+(test-end "lint")
+
+
+(exit (= (test-runner-fail-count (test-runner-current)) 0))