Python: Copy Python extractor to codeql repo

python/extractor/tests/test_file.py

@@ -0,0 +1,30 @@
+
+import sys
+import os.path
+import shutil
+import unittest
+import subprocess
+
+import semmle.populator
+from tests import test_utils
+
+class FileOptionTest(test_utils.ExtractorTest):
+
+    def __init__(self, name):
+        super(FileOptionTest, self).__init__(name)
+
+    def test_file(self):
+        self.run_extractor("-F", "tests/data/mod1.py")
+        self.check_only_traps_exists_and_clear("mod1")
+
+    def test_no_file(self):
+        try:
+            self.run_extractor("-F", "this-file-does-not-exist.py")
+        except subprocess.CalledProcessError as ex:
+            self.assertEqual(ex.returncode, 1)
+
+    def test_no_module(self):
+        try:
+            self.run_extractor("this_module_does_not_exist")
+        except subprocess.CalledProcessError as ex:
+            self.assertEqual(ex.returncode, 1)