Allow _, - and . in test id (#22)

Author: ssbarnea

src/pytest_plus/__init__.py

@@ -18,7 +18,7 @@ def get_max_test_id_length() -> int:
 def get_test_id_regex() -> None | re.Pattern[str]:
     """Return regex to use for checking test ids."""
     if int(os.environ.get("PYTEST_CHECK_TEST_ID_REGEX", "1")):
-        return re.compile(r"^\w+$")
+        return re.compile(r"^[\w_\-\.]+$")
     return None
 
 

test/test_plugin.py

@@ -60,7 +60,7 @@ def test_a(some: str):
     result = pytester.runpytest_inprocess("--collect-only", p1)
     if not disable:
         assert (
-            "Test <Function test_a[invalid name]> has an id that does not match our safe pattern '^\\w+$' for use with a terminal."
+            "Test <Function test_a[invalid name]> has an id that does not match our safe pattern '^[\\w_\\-\\.]+$' for use with a terminal."
             in result.stderr.lines
         )
     assert result.ret == rc