Reorganize unit test locations under tests/unittests (#1126)

This attempts to standardize unit test file location under test/unittests/
such that any source file located at cloudinit/path/to/file.py may have a
corresponding unit test file at test/unittests/path/to/test_file.py.

Noteworthy Comments:
====================
Four different duplicate test files existed:
test_{gpg,util,cc_mounts,cc_resolv_conf}.py
Each of these duplicate file pairs has been merged together. This is a
break in git history for these files.

The test suite appears to have a dependency on test order. Changing test
order causes some tests to fail. This should be rectified, but for now
some tests have been modified in
tests/unittests/config/test_set_passwords.py.

A helper class name starts with "Test" which causes pytest to try
executing it as a test case, which then throws warnings "due to Class
having __init__()".  Silence by changing the name of the class.

# helpers.py is imported in many test files, import paths change
cloudinit/tests/helpers.py -> tests/unittests/helpers.py

# Move directories:
cloudinit/distros/tests -> tests/unittests/distros
cloudinit/cmd/devel/tests -> tests/unittests/cmd/devel
cloudinit/cmd/tests -> tests/unittests/cmd/
cloudinit/sources/helpers/tests -> tests/unittests/sources/helpers
cloudinit/sources/tests -> tests/unittests/sources
cloudinit/net/tests -> tests/unittests/net
cloudinit/config/tests -> tests/unittests/config
cloudinit/analyze/tests/ -> tests/unittests/analyze/

# Standardize tests already in tests/unittests/
test_datasource -> sources
test_distros -> distros
test_vmware -> sources/vmware
test_handler -> config        # this contains cloudconfig module tests
test_runs -> runs

1 files changed, 31 insertions, 0 deletions

diff --git a/tests/unittests/test_version.py b/tests/unittests/test_version.py
new file mode 100644
index 00000000..ed66b09f
--- /dev/null
+++ b/tests/unittests/test_version.py
@@ -0,0 +1,31 @@
+# This file is part of cloud-init. See LICENSE file for license information.
+
+from unittest import mock
+
+from tests.unittests.helpers import CiTestCase
+from cloudinit import version
+
+
+class TestExportsFeatures(CiTestCase):
+    def test_has_network_config_v1(self):
+        self.assertIn('NETWORK_CONFIG_V1', version.FEATURES)
+
+    def test_has_network_config_v2(self):
+        self.assertIn('NETWORK_CONFIG_V2', version.FEATURES)
+
+
+class TestVersionString(CiTestCase):
+    @mock.patch("cloudinit.version._PACKAGED_VERSION",
+                "17.2-3-gb05b9972-0ubuntu1")
+    def test_package_version_respected(self):
+        """If _PACKAGED_VERSION is filled in, then it should be returned."""
+        self.assertEqual("17.2-3-gb05b9972-0ubuntu1", version.version_string())
+
+    @mock.patch("cloudinit.version._PACKAGED_VERSION", "@@PACKAGED_VERSION@@")
+    @mock.patch("cloudinit.version.__VERSION__", "17.2")
+    def test_package_version_skipped(self):
+        """If _PACKAGED_VERSION is not modified, then return __VERSION__."""
+        self.assertEqual("17.2", version.version_string())
+
+
+# vi: ts=4 expandtab