Update tests in setuptools/dist not to rely on Setuptools having a license file.

Author: jaraco

setuptools/dist.py

@@ -471,12 +471,13 @@ def _expand_patterns(
         cls, patterns: list[str], enforce_match: bool = True
     ) -> Iterator[str]:
         """
-        >>> list(Distribution._expand_patterns(['LICENSE']))
-        ['LICENSE']
+        >>> getfixture('sample_project_cwd')
+        >>> list(Distribution._expand_patterns(['LICENSE.txt']))
+        ['LICENSE.txt']
         >>> list(Distribution._expand_patterns(['pyproject.toml', 'LIC*']))
-        ['pyproject.toml', 'LICENSE']
-        >>> list(Distribution._expand_patterns(['setuptools/**/pyprojecttoml.py']))
-        ['setuptools/config/pyprojecttoml.py']
+        ['pyproject.toml', 'LICENSE.txt']
+        >>> list(Distribution._expand_patterns(['src/**/*.dat']))
+        ['src/sample/package_data.dat']
         """
         return (
             path.replace(os.sep, "/")
@@ -488,8 +489,9 @@ def _expand_patterns(
     @staticmethod
     def _find_pattern(pattern: str, enforce_match: bool = True) -> list[str]:
         r"""
-        >>> Distribution._find_pattern("LICENSE")
-        ['LICENSE']
+        >>> getfixture('sample_project_cwd')
+        >>> Distribution._find_pattern("LICENSE.txt")
+        ['LICENSE.txt']
         >>> Distribution._find_pattern("/LICENSE.MIT")
         Traceback (most recent call last):
         ...

setuptools/tests/fixtures.py

@@ -60,6 +60,12 @@ def sample_project(tmp_path):
     return tmp_path / 'sampleproject'
 
 
+@pytest.fixture
+def sample_project_cwd(sample_project):
+    with contextlib.chdir(sample_project):
+        yield
+
+
 # sdist and wheel artifacts should be stable across a round of tests
 # so we can build them once per session and use the files as "readonly"