make default value of install path None and add EnSight install case …

…in libuserd search for install (#461)

src/ansys/pyensight/core/libuserd.py

@@ -1330,6 +1330,13 @@ def _find_ensight_server_name(ansys_installation: str = "") -> Optional[str]:
             # ways, we'll add that one too, just in case.
             dirs_to_check.append(os.path.join(env_inst, "CEI"))
 
+        try:
+            import enve
+
+            dirs_to_check.append(enve.home())
+        except ModuleNotFoundError:
+            pass
+
         if "CEI_HOME" in os.environ:
             env_inst = os.environ["CEI_HOME"]
             dirs_to_check.append(env_inst)

tests/conftest.py

@@ -21,11 +21,7 @@ def pytest_addoption(parser: pytest.Parser) -> None:
     $ pytest tests --install-path "/ansys_inc/v231/CEI/bin/ensight"
     TODO: Default must be set to the one on the CI/CD server.
     """
-    parser.addoption(
-        "--install-path",
-        action="store",
-        default=f"/ansys_inc/v{ansys.pyensight.core.__ansys_version__}/",
-    )
+    parser.addoption("--install-path", action="store")
     parser.addoption("--use-local-launcher", default=False, action="store_true")