Move modules and module_utils unit tests to correct place (#81)

* Move modules and module_utils unit tests to correct place.

* Update ignore.txt

* Fix imports.

* Fix typos.

* Fix more typos.

tests/unit/plugins/modules/cloud/docker/test_docker_volume.py

@@ -0,0 +1,36 @@
+# Copyright (c) 2018 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 json
+
+import pytest
+
+from ansible_collections.community.general.plugins.modules.cloud.docker import docker_volume
+from ansible_collections.community.general.plugins.module_utils.docker import common
+
+pytestmark = pytest.mark.usefixtures('patch_ansible_module')
+
+TESTCASE_DOCKER_VOLUME = [
+    {
+        'name': 'daemon_config',
+        'state': 'present'
+    }
+]
+
+
+@pytest.mark.parametrize('patch_ansible_module', TESTCASE_DOCKER_VOLUME, indirect=['patch_ansible_module'])
+def test_create_volume_on_invalid_docker_version(mocker, capfd):
+    mocker.patch.object(common, 'HAS_DOCKER_PY', True)
+    mocker.patch.object(common, 'docker_version', '1.8.0')
+
+    with pytest.raises(SystemExit):
+        docker_volume.main()
+
+    out, dummy = capfd.readouterr()
+    results = json.loads(out)
+    assert results['failed']
+    assert 'Error: Docker SDK for Python version is 1.8.0 ' in results['msg']
+    assert 'Minimum version required is 1.10.0.' in results['msg']