1 files changed, 42 insertions, 0 deletions
diff --git a/setuptools/_distutils/tests/__init__.py b/setuptools/_distutils/tests/__init__.py
new file mode 100644
index 0000000..c7dcc7e
--- /dev/null
+++ b/setuptools/_distutils/tests/__init__.py
@@ -0,0 +1,42 @@
+"""Test suite for distutils.
+
+This test suite consists of a collection of test modules in the
+distutils.tests package.  Each test module has a name starting with
+'test' and contains a function test_suite().  The function is expected
+to return an initialized unittest.TestSuite instance.
+
+Tests for the command classes in the distutils.command package are
+included in distutils.tests as well, instead of using a separate
+distutils.command.tests package, since command identification is done
+by import rather than matching pre-defined names.
+
+"""
+
+import os
+import sys
+import unittest
+from test.support import run_unittest
+
+from .py38compat import save_restore_warnings_filters
+
+
+here = os.path.dirname(__file__) or os.curdir
+
+
+def test_suite():
+    suite = unittest.TestSuite()
+    for fn in os.listdir(here):
+        if fn.startswith("test") and fn.endswith(".py"):
+            modname = "distutils.tests." + fn[:-3]
+            # bpo-40055: Save/restore warnings filters to leave them unchanged.
+            # Importing tests imports docutils which imports pkg_resources
+            # which adds a warnings filter.
+            with save_restore_warnings_filters():
+                __import__(modname)
+            module = sys.modules[modname]
+            suite.addTest(module.test_suite())
+    return suite
+
+
+if __name__ == "__main__":
+    run_unittest(test_suite())