Revert of Cross-repo recipe package system.

third_party/recipe_engine/lint_test.py

Index: third_party/recipe_engine/lint_test.py
diff --git a/third_party/recipe_engine/lint_test.py b/third_party/recipe_engine/lint_test.py
new file mode 100755
index 0000000000000000000000000000000000000000..247d685c36eb0af5f8698e335f8a68dc40d9d473
--- /dev/null
+++ b/third_party/recipe_engine/lint_test.py
@@ -0,0 +1,70 @@
+#!/usr/bin/env python
+# Copyright 2015 The Chromium Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+"""Tests that recipes are on their best behavior.
+
+Checks that recipes only import modules from a whitelist.  Imports are
+generally not safe in recipes if they depend on the platform, since
+e.g. you can run a recipe simulation for a Windows recipe on Linux.
+"""
+
+# TODO(luqui): Implement lint for recipe modules also.
+
+import re
+import os
+import sys
+import types
+
+
+MODULES_WHITELIST = [
+  r'base64',
+  r'collections',
+  r'contextlib',
+  r'datetime',
+  r'json',
+  r'math',
+  r're',
+  r'urlparse',
+]
+
+
+class ImportViolationError(Exception):
+  pass
+
+
+class TestFailure(Exception):
+  pass
+
+
+def ImportsTest(recipe_path, recipe_name, whitelist, universe):
+  """Tests that recipe_name only uses allowed imports.
+
+  Returns a list of errors, or an empty list if there are no errors (duh).
+  """
+
+  recipe = universe.load_recipe(recipe_name)
+  for attr in dir(recipe):
+    val = getattr(recipe, attr)
+    if isinstance(val, types.ModuleType):
+      module_name = val.__name__
+      for pattern in whitelist:
+        if pattern.match(val.__name__):
+          break
+      else:
+        yield ('In %s:\n'
+               '  Non-whitelisted import of %s' %
+               (recipe_path, module_name))
+
+
+def main(universe, whitelist=[]):
+  whitelist = map(re.compile, MODULES_WHITELIST + whitelist)
+
+  errors = []
+  for recipe_path, recipe_name in universe.loop_over_recipes():
+    errors.extend(ImportsTest(recipe_path, recipe_name, whitelist, universe))
+
+  if errors:
+    raise TestFailure('\n'.join(map(str, errors)))
+