test: modernize how pytest collects demos

Author: kalekundert

pyproject.toml

@@ -44,6 +44,9 @@ docs = [
 'Continuous Integration' = 'https://github.com/kxgames/glooey/actions'
 'Test Coverage' = 'https://coveralls.io/github/kxgames/glooey'
 
+[tool.pytest.ini_options]
+norecursedirs = ".* .git *.egg assets __pycache__"
+
 [tool.semantic_release]
 version_variable = 'glooey/__init__.py:__version__'
 build_command = 'python -m pip install flit && flit build'

tests/conftest.py

@@ -9,19 +9,19 @@ def pytest_addoption(parser):
 def pytest_collect_file(path, parent):
     if parent.config.option.run_demos:
         if path.fnmatch('demo_*.py'):
-            return DemoFile(path, parent)
+            return DemoFile.from_parent(parent, fspath=path)
 
 class DemoFile(pytest.File):
 
     def collect(self):
         name = self.fspath.basename[:-len('.py')]
-        yield DemoItem(name, self, self.fspath)
+        yield DemoItem.from_parent(self, name=name, fspath=self.fspath)
 
 class DemoItem(pytest.Item):
 
-    def __init__(self, name, parent, path):
+    def __init__(self, name, parent, fspath):
         super().__init__(name, parent)
-        self.path = path
+        self.path = fspath
 
     def runtest(self):
         run_demo(self.path.strpath)