Update macos workflow

.github/workflows/macos.yml

@@ -1,6 +1,6 @@
 # brian's standard GitHub Actions macOS config for Perl 5 modules
-# version 20220125.002
-# https://github.com/briandfoy/github_actions
+# version 20220825.001
+# https://github.com/briandfoy/github_workflows
 # https://github.com/features/actions
 # This file is licensed under the Artistic License 2.0
 name: macos
@@ -19,8 +19,9 @@ on:
             # list all the files which are irrelevant to the tests
             # non-code, support files, docs, etc
             - '.appveyor.yml'
-            - '.github/workflows/ubuntu.yml'
+            - '.gitattributes'
             - '.github/workflows/windows.yml'
+            - '.github/workflows/release.yml'
             - '.gitignore'
             - '.releaserc'
             - 'Changes'
@@ -66,6 +67,12 @@ jobs:
               run: |
                 perl Makefile.PL
                 make test
+# Run author tests, but only if there's an xt/ directory
+            - name: Author tests
+              if: hashFiles('xt') != ''
+              run: |
+                cpan -M https://www.cpan.org -T Test::CPAN::Changes
+                prove -r -b xt
 # Running tests in parallel should be faster, but it's also more
 # tricky in cases where different tests share a feature, such as a
 # file they want to write to. Parallel tests can stomp on each other.