Fix tests

poetry/utils/env.py

@@ -539,11 +539,22 @@ class NullEnv(SystemEnv):
 
 
 
 
 class MockEnv(NullEnv):
 class MockEnv(NullEnv):
-    def __init__(self, version_info=(3, 7, 0), python_implementation="cpython"):
-        super(MockEnv, self).__init__()
+    def __init__(
+        self,
+        version_info=(3, 7, 0),
+        python_implementation="CPython",
+        platform="darwin",
+        os_name="posix",
+        is_venv=False,
+        **kwargs
+    ):
+        super(MockEnv, self).__init__(**kwargs)
 
 
         self._version_info = version_info
         self._version_info = version_info
         self._python_implementation = python_implementation
         self._python_implementation = python_implementation
+        self._platform = platform
+        self._os_name = os_name
+        self._is_venv = is_venv
 
 
     @property
     @property
     def version_info(self):  # type: () -> Tuple[int]
     def version_info(self):  # type: () -> Tuple[int]
@@ -552,3 +563,14 @@ class MockEnv(NullEnv):
     @property
     @property
     def python_implementation(self):  # type: () -> str
     def python_implementation(self):  # type: () -> str
         return self._python_implementation
         return self._python_implementation
+
+    @property
+    def platform(self):  # type: () -> str
+        return self._platform
+
+    @property
+    def os(self):  # type: () -> str
+        return self._os_name
+
+    def is_venv(self):  # type: () -> bool
+        return self._is_venv

tests/console/conftest.py

@@ -50,7 +50,9 @@ def installed():
 
 
 @pytest.fixture(autouse=True)
 @pytest.fixture(autouse=True)
 def setup(mocker, installer, installed):
 def setup(mocker, installer, installed):
-    Env._env = MockEnv()
+    mocker.patch(
+        "poetry.utils.env.Env.get", return_value=MockEnv(is_venv=True, execute=True)
+    )
 
 
     # Set Installer's installer
     # Set Installer's installer
     p = mocker.patch("poetry.installation.installer.Installer._get_installer")
     p = mocker.patch("poetry.installation.installer.Installer._get_installer")
@@ -78,7 +80,6 @@ def setup(mocker, installer, installed):
 
 
     os.environ.clear()
     os.environ.clear()
     os.environ.update(environ)
     os.environ.update(environ)
-    Env._env = None
 
 
 
 
 class Application(BaseApplication):
 class Application(BaseApplication):