add test and changelog for better report if we can't get version_info

from an interpreter executable.

2 files changed, 10 insertions, 0 deletions

diff --git a/CHANGELOG b/CHANGELOG
index d4dd250..3e4f573 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -11,6 +11,9 @@
 - fix issue152: set VIRTUAL_ENV when running test commands,
   thanks Florian Ludwig.
 
+- better report if we can't get version_info from an interpreter
+  executable. Thanks Floris Bruynooghe.
+
 
 1.7.2
 -----------
diff --git a/tests/test_venv.py b/tests/test_venv.py
index fe2bed7..b1d1f2e 100644
--- a/tests/test_venv.py
+++ b/tests/test_venv.py
@@ -4,6 +4,7 @@ import pytest
 import os, sys
 import tox._config
 from tox._venv import *  # noqa
+from tox.interpreters import NoInterpreterInfo
 
 #def test_global_virtualenv(capfd):
 #    v = VirtualEnv()
@@ -34,6 +35,12 @@ def test_getsupportedinterpreter(monkeypatch, newconfig, mocksession):
     monkeypatch.setattr(venv.envconfig, 'basepython', 'notexistingpython')
     py.test.raises(tox.exception.InterpreterNotFound,
                    venv.getsupportedinterpreter)
+    monkeypatch.undo()
+    # check that we properly report when no version_info is present
+    info = NoInterpreterInfo(name=venv.name)
+    info.executable = "something"
+    monkeypatch.setattr(config.interpreters, "get_info", lambda *args: info)
+    pytest.raises(tox.exception.InvocationError, venv.getsupportedinterpreter)
 
 
 def test_create(monkeypatch, mocksession, newconfig):