Add JEDI_TEST_ENVIRONMENT_EXECUTABLE for AppVeyor

test/test_api/test_environment.py

@@ -24,10 +24,23 @@ def test_find_python_environments():
         assert parser_version[:2] == env.version_info[:2]
 
 
-def test_version():
-    env = Environment('some path', sys.executable)
+@pytest.mark.skipif("os.name == 'nt'")
+@pytest.mark.parametrize(
+    'version',
+    ['2.7', '3.3', '3.4', '3.5', '3.6', '3.7']
+)
+def test_versions(version):
+    executable = 'python' + version
+    try:
+        env = Environment('some path', executable)
+    except InvalidPythonEnvironment:
+        if int(version.replace('.', '')) == py_version:
+            # At least the current version has to work
+            raise
+        return
+
     sys_path = env.get_sys_path()
-    assert any(sys.prefix in p for p in sys_path)
+    assert any(executable in p for p in sys_path)
 
 
 def test_load_module(evaluator):