Issue #21918: Convert test_tools.py to a sub-package of test.

Lib/test/test_tools/test_pdeps.py

@@ -0,0 +1,34 @@
+"""Tests for the pdeps script in the Tools directory."""
+
+import os
+import sys
+import unittest
+import tempfile
+from test import support
+
+from test.test_tools import scriptsdir, skip_if_missing, import_tool
+
+skip_if_missing()
+
+
+class PdepsTests(unittest.TestCase):
+
+    @classmethod
+    def setUpClass(self):
+        self.pdeps = import_tool('pdeps')
+
+    def test_process_errors(self):
+        # Issue #14492: m_import.match(line) can be None.
+        with tempfile.TemporaryDirectory() as tmpdir:
+            fn = os.path.join(tmpdir, 'foo')
+            with open(fn, 'w') as stream:
+                stream.write("#!/this/will/fail")
+            self.pdeps.process(fn, {})
+
+    def test_inverse_attribute_error(self):
+        # Issue #14492: this used to fail with an AttributeError.
+        self.pdeps.inverse({'a': []})
+
+
+if __name__ == '__main__':
+    unittest.main()