guix lint: check whether descriptions and synopses start with an upper-case letter.

* guix/scripts/lint.scm (check-description-style,
  check-synopsis-start-upper-case): New methods.
* tests/lint.scm ("description: does not start with an upper-case letter",
  "synopsis: does not start with an upper-case letter"): New tests.

1 files changed, 18 insertions, 0 deletions

diff --git a/tests/lint.scm b/tests/lint.scm
index e0829089b4c..ceb7abe23e1 100644
--- a/tests/lint.scm
+++ b/tests/lint.scm
@@ -44,6 +44,24 @@
       (thunk))
     (get-output-string port)))
 
+(test-assert "description: does not start with an upper-case letter"
+  (->bool
+   (string-contains (call-with-warnings
+                      (lambda ()
+                        (let ((pkg (dummy-package "x"
+                                     (description "bad description."))))
+                          (check-description-style pkg))))
+                    "description should start with an upper-case letter")))
+
+(test-assert "synopsis: does not start with an upper-case letter"
+  (->bool
+   (string-contains (call-with-warnings
+                      (lambda ()
+                        (let ((pkg (dummy-package "x"
+                                     (synopsis "bad synopsis."))))
+                          (check-synopsis-style pkg))))
+                    "synopsis should start with an upper-case letter")))
+
 (test-assert "synopsis: ends with a period"
   (->bool
    (string-contains (call-with-warnings