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, 64 insertions, 0 deletions

diff --git a/tests/unittests/net/test_networkd.py b/tests/unittests/net/test_networkd.py
new file mode 100644
index 00000000..8dc90b48
--- /dev/null
+++ b/tests/unittests/net/test_networkd.py
@@ -0,0 +1,64 @@
+# This file is part of cloud-init. See LICENSE file for license information.
+
+from cloudinit import safeyaml
+from cloudinit.net import networkd, network_state
+
+V2_CONFIG_SET_NAME = """\
+network:
+  version: 2
+  ethernets:
+    eth0:
+      match:
+        macaddress: '00:11:22:33:44:55'
+      nameservers:
+        search: [spam.local, eggs.local]
+        addresses: [8.8.8.8]
+    eth1:
+      match:
+        macaddress: '66:77:88:99:00:11'
+      set-name: "ens92"
+      nameservers:
+        search: [foo.local, bar.local]
+        addresses: [4.4.4.4]
+"""
+
+V2_CONFIG_SET_NAME_RENDERED_ETH0 = """[Match]
+MACAddress=00:11:22:33:44:55
+Name=eth0
+
+[Network]
+DHCP=no
+DNS=8.8.8.8
+Domains=spam.local eggs.local
+
+"""
+
+V2_CONFIG_SET_NAME_RENDERED_ETH1 = """[Match]
+MACAddress=66:77:88:99:00:11
+Name=ens92
+
+[Network]
+DHCP=no
+DNS=4.4.4.4
+Domains=foo.local bar.local
+
+"""
+
+
+class TestNetworkdRenderState:
+    def _parse_network_state_from_config(self, config):
+        yaml = safeyaml.load(config)
+        return network_state.parse_net_config_data(yaml["network"])
+
+    def test_networkd_render_with_set_name(self):
+        ns = self._parse_network_state_from_config(V2_CONFIG_SET_NAME)
+        renderer = networkd.Renderer()
+        rendered_content = renderer._render_content(ns)
+
+        assert "eth0" in rendered_content
+        assert rendered_content["eth0"] == V2_CONFIG_SET_NAME_RENDERED_ETH0
+        assert "ens92" in rendered_content
+        assert rendered_content["ens92"] == V2_CONFIG_SET_NAME_RENDERED_ETH1
+
+
+# vi: ts=4 expandtab