1 files changed, 57 insertions, 0 deletions
diff --git a/test/units/module_utils/common/validation/test_check_mutually_exclusive.py b/test/units/module_utils/common/validation/test_check_mutually_exclusive.py
new file mode 100644
index 0000000..7bf9076
--- /dev/null
+++ b/test/units/module_utils/common/validation/test_check_mutually_exclusive.py
@@ -0,0 +1,57 @@
+# -*- coding: utf-8 -*-
+# Copyright (c) 2019 Ansible Project
+# GNU General Public License v3.0+ (see COPYING or https://www.gnu.org/licenses/gpl-3.0.txt)
+
+from __future__ import absolute_import, division, print_function
+__metaclass__ = type
+
+import pytest
+
+from ansible.module_utils._text import to_native
+from ansible.module_utils.common.validation import check_mutually_exclusive
+
+
+@pytest.fixture
+def mutually_exclusive_terms():
+    return [
+        ('string1', 'string2',),
+        ('box', 'fox', 'socks'),
+    ]
+
+
+def test_check_mutually_exclusive(mutually_exclusive_terms):
+    params = {
+        'string1': 'cat',
+        'fox': 'hat',
+    }
+    assert check_mutually_exclusive(mutually_exclusive_terms, params) == []
+
+
+def test_check_mutually_exclusive_found(mutually_exclusive_terms):
+    params = {
+        'string1': 'cat',
+        'string2': 'hat',
+        'fox': 'red',
+        'socks': 'blue',
+    }
+    expected = "parameters are mutually exclusive: string1|string2, box|fox|socks"
+
+    with pytest.raises(TypeError) as e:
+        check_mutually_exclusive(mutually_exclusive_terms, params)
+
+    assert to_native(e.value) == expected
+
+
+def test_check_mutually_exclusive_none():
+    terms = None
+    params = {
+        'string1': 'cat',
+        'fox': 'hat',
+    }
+    assert check_mutually_exclusive(terms, params) == []
+
+
+def test_check_mutually_exclusive_no_params(mutually_exclusive_terms):
+    with pytest.raises(TypeError) as te:
+        check_mutually_exclusive(mutually_exclusive_terms, None)
+    assert "'NoneType' object is not iterable" in to_native(te.value)