Remove support for pytest 6.x (#151)

Pytest 7 was released over two years ago, and this repository no longer
tests against pytest 6. It should be safe to assume that projects aren't
relying on pytest 6 anymore.

fixes: #150

pytest_mypy_plugins/collect.py

@@ -23,7 +23,6 @@
 import yaml
 from _pytest.config.argparsing import Parser
 from _pytest.nodes import Node
-from packaging.version import Version
 
 from pytest_mypy_plugins import utils
 
@@ -108,9 +107,7 @@ class YamlTestFile(pytest.File):
     def collect(self) -> Iterator["YamlTestItem"]:
         from pytest_mypy_plugins.item import YamlTestItem
 
-        # To support both Pytest 6.x and 7.x
-        path = getattr(self, "path", None) or getattr(self, "fspath")
-        parsed_file = yaml.load(stream=path.read_text("utf8"), Loader=SafeLineLoader)
+        parsed_file = yaml.load(stream=self.path.read_text("utf8"), Loader=SafeLineLoader)
         if parsed_file is None:
             return
 
@@ -174,19 +171,10 @@ def _eval_skip(self, skip_if: str) -> bool:
         return eval(skip_if, {"sys": sys, "os": os, "pytest": pytest, "platform": platform})
 
 
-if Version(pytest.__version__) >= Version("7.0.0rc1"):
-
-    def pytest_collect_file(file_path: pathlib.Path, parent: Node) -> Optional[YamlTestFile]:
-        if file_path.suffix in {".yaml", ".yml"} and file_path.name.startswith(("test-", "test_")):
-            return YamlTestFile.from_parent(parent, path=file_path, fspath=None)
-        return None
-
-else:
-
-    def pytest_collect_file(path: py.path.local, parent: Node) -> Optional[YamlTestFile]:  # type: ignore[misc]
-        if path.ext in {".yaml", ".yml"} and path.basename.startswith(("test-", "test_")):
-            return YamlTestFile.from_parent(parent, fspath=path)
-        return None
+def pytest_collect_file(file_path: pathlib.Path, parent: Node) -> Optional[YamlTestFile]:
+    if file_path.suffix in {".yaml", ".yml"} and file_path.name.startswith(("test-", "test_")):
+        return YamlTestFile.from_parent(parent, path=file_path, fspath=None)
+    return None
 
 
 def pytest_addoption(parser: Parser) -> None:

pytest_mypy_plugins/item.py

@@ -466,8 +466,5 @@ def repr_failure(
         else:
             return super().repr_failure(excinfo, style="native")
 
-    def reportinfo(self) -> Tuple[Union[py.path.local, Path, str], Optional[int], str]:
-        # To support both Pytest 6.x and 7.x
-        path = getattr(self, "path", None) or getattr(self, "fspath")
-        assert path
-        return path, None, self.name
+    def reportinfo(self) -> Tuple[Union[Path, str], Optional[int], str]:
+        return self.path, None, self.name