detect buildout and add buildout eggs to sys.path

test/test_evaluate/test_buildout_detection.py

@@ -0,0 +1,71 @@
+import os
+from ..helpers import cwd_at
+from jedi._compatibility import u
+from jedi.parser import Parser
+from jedi.evaluate.sys_path import (
+    _get_parent_dir_with_file,
+    _get_buildout_scripts,
+    _check_module
+)
+
+
+@cwd_at('test/test_evaluate/buildout_project/src/proj_name')
+def test_parent_dir_with_file():
+    parent = _get_parent_dir_with_file(
+        os.path.abspath(os.curdir), 'buildout.cfg')
+    assert parent is not None
+    assert parent.endswith('test/test_evaluate/buildout_project')
+
+
+@cwd_at('test/test_evaluate/buildout_project/src/proj_name')
+def test_buildout_detection():
+    scripts = _get_buildout_scripts(os.path.abspath('./module_name.py'))
+    assert len(scripts) == 1
+    curdir = os.path.abspath(os.curdir)
+    appdir_path = os.path.normpath(os.path.join(curdir, '../../bin/app'))
+    assert scripts[0] == appdir_path
+
+
+def test_append_on_non_sys_path():
+    SRC = u("""
+class Dummy(object):
+    path = []
+
+d = Dummy()
+d.path.append('foo')""")
+    p = Parser(SRC)
+    paths = _check_module(p.module)
+    assert len(paths) > 0
+    assert 'foo' not in paths
+
+
+def test_path_from_invalid_sys_path_assignment():
+    SRC = u("""
+import sys
+sys.path = 'invalid'""")
+    p = Parser(SRC)
+    paths = _check_module(p.module)
+    assert len(paths) > 0
+    assert 'invalid' not in paths
+
+
+def test_path_from_sys_path_assignment():
+    SRC = u("""
+#!/usr/bin/python
+
+import sys
+sys.path[0:0] = [
+  '/usr/lib/python3.4/site-packages',
+  '/home/test/.buildout/eggs/important_package.egg'
+  ]
+
+path[0:0] = [1]
+
+import important_package
+
+if __name__ == '__main__':
+    sys.exit(important_package.main())""")
+    p = Parser(SRC)
+    paths = _check_module(p.module)
+    assert 1 not in paths
+    assert '/home/test/.buildout/eggs/important_package.egg' in paths