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, 45 insertions, 0 deletions

diff --git a/tests/unittests/distros/test_arch.py b/tests/unittests/distros/test_arch.py
new file mode 100644
index 00000000..590ba00e
--- /dev/null
+++ b/tests/unittests/distros/test_arch.py
@@ -0,0 +1,45 @@
+# This file is part of cloud-init. See LICENSE file for license information.
+
+from cloudinit.distros.arch import _render_network
+from cloudinit import util
+
+from tests.unittests.helpers import (CiTestCase, dir2dict)
+
+from . import _get_distro
+
+
+class TestArch(CiTestCase):
+
+    def test_get_distro(self):
+        distro = _get_distro("arch")
+        hostname = "myhostname"
+        hostfile = self.tmp_path("hostfile")
+        distro._write_hostname(hostname, hostfile)
+        self.assertEqual(hostname + "\n", util.load_file(hostfile))
+
+
+class TestRenderNetwork(CiTestCase):
+    def test_basic_static(self):
+        """Just the most basic static config.
+
+        note 'lo' should not be rendered as an interface."""
+        entries = {'eth0': {'auto': True,
+                            'dns-nameservers': ['8.8.8.8'],
+                            'bootproto': 'static',
+                            'address': '10.0.0.2',
+                            'gateway': '10.0.0.1',
+                            'netmask': '255.255.255.0'},
+                   'lo': {'auto': True}}
+        target = self.tmp_dir()
+        devs = _render_network(entries, target=target)
+        files = dir2dict(target, prefix=target)
+        self.assertEqual(['eth0'], devs)
+        self.assertEqual(
+            {'/etc/netctl/eth0': '\n'.join([
+                "Address=10.0.0.2/255.255.255.0",
+                "Connection=ethernet",
+                "DNS=('8.8.8.8')",
+                "Gateway=10.0.0.1",
+                "IP=static",
+                "Interface=eth0", ""]),
+             '/etc/resolv.conf': 'nameserver 8.8.8.8\n'}, files)