Update unit test template with last modifications, clean and manage some errors

tests/utils/blender_addon.py

@@ -1,20 +1,36 @@
-import sys
 import bpy
+import os
+import pathlib
 
 # Paste this variable in the blender.py
 dependency = {
     # 'moderlab_plugin': ['moderlab_plugin.zip', 'Moderlab-Production/BlenderPlugin'],
-    'moderlab_type': ['moderlab_type.zip', 'Moderlab-Production/BlenderObjectType'],
+    # 'moderlab_type': ['moderlab_type.zip', 'Moderlab-Production/BlenderObjectType'],
     # 'moderlab_pie': ['moderlab_pie.zip', 'Moderlab-Production/BlenderPieMenu'],
     # 'uv-packer': ['uv-packer.zip', 'Moderlab-Production/UvPacker'],
 }
 
 
 def b3d_install_addon():
-    for key, value in dependency.items():
-        bpy.ops.preferences.addon_install(filepath=f'/addon_moderlab/{value[0]}')
-        bpy.ops.preferences.addon_enable(module=key)
-        bpy.ops.wm.save_userpref()
+    env_name = 'FOLDER_TEST'
+    try:
+        if not os.environ.get(env_name):
+            raise KeyError
+        env_path = pathlib.Path(os.environ[env_name])
+        if not env_path.exists():
+            raise FileNotFoundError
+
+        for key, value in dependency.items():
+            bpy.ops.preferences.addon_install(filepath=f'{env_path}/{value[0]}')
+            bpy.ops.preferences.addon_enable(module=key)
+            bpy.ops.wm.save_userpref()
+
+    except KeyError:
+        print(f'Env. "{env_name}" doesn\'t exist')
+        exit(1)
+    except FileNotFoundError:
+        print('Wrong path to execute this Unit Test')
+        exit(1)
 
 
 if __name__ == '__main__':