Add tests for setuptools.glob

setuptools/tests/test_glob.py

+import pytest
+
+from setuptools.glob import glob
+
+from .files import build_files
+
+
+@pytest.mark.parametrize('tree, pattern, matches', (
+    ('', b'', []),
+    ('', '', []),
+    ('''
+     appveyor.yml
+     CHANGES.rst
+     LICENSE
+     MANIFEST.in
+     pyproject.toml
+     README.rst
+     setup.cfg
+     setup.py
+     ''', '*.rst', ('CHANGES.rst', 'README.rst')),
+    ('''
+     appveyor.yml
+     CHANGES.rst
+     LICENSE
+     MANIFEST.in
+     pyproject.toml
+     README.rst
+     setup.cfg
+     setup.py
+     ''', b'*.rst', (b'CHANGES.rst', b'README.rst')),
+))
+def test_glob(monkeypatch, tmpdir, tree, pattern, matches):
+    monkeypatch.chdir(tmpdir)
+    build_files({name: '' for name in tree.split()})
+    assert list(sorted(glob(pattern))) == list(sorted(matches))