Fixed import of importlib.metadata

tests/test_command.py

@@ -0,0 +1,21 @@
+#!/usr/bin/env python
+# coding: utf8
+
+""" Unit testing for Separator class. """
+
+__email__ = 'research@deezer.com'
+__author__ = 'Deezer Research'
+__license__ = 'MIT License'
+
+from spleeter.__main__ import spleeter
+from typer.testing import CliRunner
+
+
+def test_version():
+
+    runner = CliRunner()
+
+    # execute spleeter version command
+    result = runner.invoke(spleeter, [
+        '--version',
+    ])