If the VIRTUAL_ENV variable changes, need to reload the default envir…

…onment, fixes #1201, #1200

jedi/api/environment.py

@@ -189,8 +189,16 @@ def get_default_environment():
     return SameEnvironment()
 
 
-@time_cache(seconds=10 * 60)  # 10 Minutes
 def get_cached_default_environment():
+    environment = _get_cached_default_environment()
+    if environment.path != os.environ.get('VIRTUAL_ENV'):
+        _get_cached_default_environment.clear_cache()
+        return _get_cached_default_environment()
+    return environment
+
+
+@time_cache(seconds=10 * 60)  # 10 Minutes
+def _get_cached_default_environment():
     return get_default_environment()
 
 

jedi/cache.py

@@ -126,6 +126,7 @@ def wrapper(*args, **kwargs):
 
         wrapper.clear_cache = lambda: cache.clear()
         return wrapper
+
     return decorator
 
 

test/test_api/test_environment.py

@@ -7,7 +7,7 @@
 from jedi._compatibility import py_version
 from jedi.api.environment import get_default_environment, find_virtualenvs, \
     InvalidPythonEnvironment, find_system_environments, \
-    get_system_environment, create_environment
+    get_system_environment, create_environment, get_cached_default_environment
 
 
 def test_sys_path():
@@ -129,3 +129,10 @@ def _get_subprocess(self):
     monkeypatch.setenv('VIRTUAL_ENV', fake_python)
     env = get_default_environment()
     assert env.path == 'fake'
+
+
+def test_changing_venv(venv_path, monkeypatch):
+    monkeypatch.setitem(os.environ, 'VIRTUAL_ENV', venv_path)
+    get_cached_default_environment()
+    monkeypatch.setitem(os.environ, 'VIRTUAL_ENV', sys.executable)
+    assert get_cached_default_environment().executable == sys.executable