[webkitcorepy] Improve logging for incorrect test arguments

https://bugs.webkit.org/show_bug.cgi?id=258533
rdar://111348949

Reviewed by Aakash Jain.

* Tools/Scripts/libraries/webkitcorepy/setup.py: Bump version.
* Tools/Scripts/libraries/webkitcorepy/webkitcorepy/__init__.py: Ditto.
* Tools/Scripts/libraries/webkitcorepy/webkitcorepy/testing/python_test_runner.py:
(PythonTestRunner.tests): Explain that test arguments are of the form <module>.<file>.<class>.<function>.

Canonical link: https://commits.webkit.org/266108@main

Tools/Scripts/libraries/webkitcorepy/setup.py

@@ -30,7 +30,7 @@ def readme():
 
 setup(
     name='webkitcorepy',
-    version='0.16.1',
+    version='0.16.2',
     description='Library containing various Python support classes and functions.',
     long_description=readme(),
     classifiers=[

Tools/Scripts/libraries/webkitcorepy/webkitcorepy/__init__.py

@@ -48,7 +48,7 @@
 from webkitcorepy.filtered_call import filtered_call
 from webkitcorepy.partial_proxy import PartialProxy
 
-version = Version(0, 16, 1)
+version = Version(0, 16, 2)
 
 from webkitcorepy.autoinstall import Package, AutoInstall
 if sys.version_info > (3, 0):

Tools/Scripts/libraries/webkitcorepy/webkitcorepy/testing/python_test_runner.py

@@ -65,7 +65,9 @@ def __init__(self, description, loggers=None, modules=None, patterns=None):
     def tests(self, args=None):
         filters = [] if not args or not args.tests else args.tests
         matched_filters = {pattern.pattern: 0 for pattern in filters}
+        example = None
         for name in self._tests.keys():
+            example = name
             if not filters:
                 yield name
             did_match = False
@@ -82,6 +84,9 @@ def tests(self, args=None):
             if count:
                 continue
             sys.stderr.write("No tests match '{}'\n".format(pattern.replace('.*', '*').replace('**', '*')))
+            sys.stderr.write("Specify tests names in the form '<module>.<file>.<class>.<function>'\n")
+            if example:
+                sys.stderr.write("For example: '{} {}'\n".format(sys.argv[0].split('/')[-1], example.split('.')[0]))
             must_exit = True
         if must_exit:
             sys.exit(-1)