Python: Copy Python extractor to codeql repo

python/extractor/tests/test_single.py

@@ -0,0 +1,21 @@
+
+import sys
+import os.path
+import shutil
+import unittest
+
+import semmle.populator
+from tests import test_utils
+
+class SingleThreadedTest(test_utils.ExtractorTest):
+
+    def __init__(self, name):
+        super(SingleThreadedTest, self).__init__(name)
+
+    def test_simple(self):
+        self.run_extractor("-z1", "package.sub.a")
+        self.check_only_traps_exists_and_clear("a", "package/", "sub/")
+
+    def test_simple_exclude(self):
+        self.run_extractor("-z1", "-y", "package.sub", "mod1", "package.x", "package.sub.a")
+        self.check_only_traps_exists_and_clear("mod1", "package/", "x")