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, 5 insertions, 5 deletions

diff --git a/tox.ini b/tox.ini
index 874d3f20..ff888266 100644
--- a/tox.ini
+++ b/tox.ini
@@ -3,7 +3,7 @@ envlist = py3, xenial-dev, flake8, pylint
 recreate = True
 
 [testenv]
-commands = {envpython} -m pytest {posargs:tests/unittests cloudinit}
+commands = {envpython} -m pytest {posargs:tests/unittests}
 setenv =
     LC_ALL = en_US.utf-8
 passenv=
@@ -37,7 +37,7 @@ deps =
 commands = {envpython} -m pytest \
             --durations 10 \
             {posargs:--cov=cloudinit --cov-branch \
-            tests/unittests cloudinit}
+            tests/unittests}
 
 [testenv:py27]
 basepython = python2.7
@@ -86,7 +86,7 @@ deps =
 # [testenv:xenial-dev].  See the comment there for details.
 commands =
   python ./tools/pipremove jsonschema
-  python -m pytest {posargs:tests/unittests cloudinit}
+  python -m pytest {posargs:tests/unittests}
 basepython = python3
 deps =
     # Refer to the comment in [xenial-shared-deps] for details
@@ -104,7 +104,7 @@ deps =
 # changes here are reflected in [testenv:xenial].
 commands =
   python ./tools/pipremove jsonschema
-  python -m pytest {posargs:tests/unittests cloudinit}
+  python -m pytest {posargs:tests/unittests}
 basepython = {[testenv:xenial]basepython}
 deps =
     # Refer to the comment in [xenial-shared-deps] for details
@@ -163,7 +163,7 @@ setenv =
 
 [pytest]
 # TODO: s/--strict/--strict-markers/ once xenial support is dropped
-testpaths = cloudinit tests/unittests
+testpaths = tests/unittests
 addopts = --strict
 log_format = %(asctime)s %(levelname)-9s %(name)s:%(filename)s:%(lineno)d %(message)s
 log_date_format = %Y-%m-%d %H:%M:%S