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, 0 insertions, 61 deletions

diff --git a/cloudinit/config/tests/test_mounts.py b/cloudinit/config/tests/test_mounts.py
deleted file mode 100644
index 56510fd6..00000000
--- a/cloudinit/config/tests/test_mounts.py
+++ /dev/null
@@ -1,61 +0,0 @@
-# This file is part of cloud-init. See LICENSE file for license information.
-from unittest import mock
-
-import pytest
-
-from cloudinit.config.cc_mounts import create_swapfile
-from cloudinit.subp import ProcessExecutionError
-
-
-M_PATH = 'cloudinit.config.cc_mounts.'
-
-
-class TestCreateSwapfile:
-
-    @pytest.mark.parametrize('fstype', ('xfs', 'btrfs', 'ext4', 'other'))
-    @mock.patch(M_PATH + 'util.get_mount_info')
-    @mock.patch(M_PATH + 'subp.subp')
-    def test_happy_path(self, m_subp, m_get_mount_info, fstype, tmpdir):
-        swap_file = tmpdir.join("swap-file")
-        fname = str(swap_file)
-
-        # Some of the calls to subp.subp should create the swap file; this
-        # roughly approximates that
-        m_subp.side_effect = lambda *args, **kwargs: swap_file.write('')
-
-        m_get_mount_info.return_value = (mock.ANY, fstype)
-
-        create_swapfile(fname, '')
-        assert mock.call(['mkswap', fname]) in m_subp.call_args_list
-
-    @mock.patch(M_PATH + "util.get_mount_info")
-    @mock.patch(M_PATH + "subp.subp")
-    def test_fallback_from_fallocate_to_dd(
-        self, m_subp, m_get_mount_info, caplog, tmpdir
-    ):
-        swap_file = tmpdir.join("swap-file")
-        fname = str(swap_file)
-
-        def subp_side_effect(cmd, *args, **kwargs):
-            # Mock fallocate failing, to initiate fallback
-            if cmd[0] == "fallocate":
-                raise ProcessExecutionError()
-
-        m_subp.side_effect = subp_side_effect
-        # Use ext4 so both fallocate and dd are valid swap creation methods
-        m_get_mount_info.return_value = (mock.ANY, "ext4")
-
-        create_swapfile(fname, "")
-
-        cmds = [args[0][0] for args, _kwargs in m_subp.call_args_list]
-        assert "fallocate" in cmds, "fallocate was not called"
-        assert "dd" in cmds, "fallocate failure did not fallback to dd"
-
-        assert cmds.index("dd") > cmds.index(
-            "fallocate"
-        ), "dd ran before fallocate"
-
-        assert mock.call(["mkswap", fname]) in m_subp.call_args_list
-
-        msg = "fallocate swap creation failed, will attempt with dd"
-        assert msg in caplog.text