diff --git a/test/units/test_constants.py b/test/units/test_constants.py
new file mode 100644
index 00000000000..776d2b9a76a
--- /dev/null
+++ b/test/units/test_constants.py
@@ -0,0 +1,218 @@
+# -*- coding: utf-8 -*-
+# (c) 2017 Toshio Kuratomi <tkuratomi@ansible.com>
+#
+# This file is part of Ansible
+#
+# Ansible is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# Ansible is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with Ansible. If not, see <http://www.gnu.org/licenses/>.
+
+# Make coding more python3-ish
+from __future__ import (absolute_import, division)
+__metaclass__ = type
+
+import pwd
+import os
+
+import pytest
+
+from ansible import constants
+from ansible.compat.six import StringIO
+from ansible.compat.six.moves import configparser
+from ansible.module_utils._text import to_text
+
+
+@pytest.fixture
+def cfgparser():
+ CFGDATA = StringIO("""
+[defaults]
+defaults_one = 'data_defaults_one'
+
+[level1]
+level1_one = 'data_level1_one'
+ """)
+ p = configparser.ConfigParser()
+ p.readfp(CFGDATA)
+ return p
+
+
+@pytest.fixture
+def user():
+ user = {}
+ user['uid'] = os.geteuid()
+
+ pwd_entry = pwd.getpwuid(user['uid'])
+ user['username'] = pwd_entry.pw_name
+ user['home'] = pwd_entry.pw_dir
+
+ return user
+
+@pytest.fixture
+def cfg_file():
+ data = '/ansible/test/cfg/path'
+ old_cfg_file = constants.CONFIG_FILE
+ constants.CONFIG_FILE = os.path.join(data, 'ansible.cfg')
+ yield data
+
+ constants.CONFIG_FILE = old_cfg_file
+
+
+@pytest.fixture
+def null_cfg_file():
+ old_cfg_file = constants.CONFIG_FILE
+ del constants.CONFIG_FILE
+ yield
+
+ constants.CONFIG_FILE = old_cfg_file
+
+
+@pytest.fixture
+def cwd():
+ data = '/ansible/test/cwd/'
+ old_cwd = os.getcwd
+ os.getcwd = lambda : data
+
+ old_cwdu = None
+ if hasattr(os, 'getcwdu'):
+ old_cwdu = os.getcwdu
+ os.getcwdu = lambda : to_text(data)
+
+ yield data
+
+ os.getcwd = old_cwd
+ if hasattr(os, 'getcwdu'):
+ os.getcwdu = old_cwdu
+
+
+class TestMkBoolean:
+ def test_bools(self):
+ assert constants.mk_boolean(True) is True
+ assert constants.mk_boolean(False) is False
+
+ def test_none(self):
+ assert constants.mk_boolean(None) is False
+
+ def test_numbers(self):
+ assert constants.mk_boolean(1) is True
+ assert constants.mk_boolean(0) is False
+ assert constants.mk_boolean(0.0) is False
+
+# Current mk_boolean doesn't consider these to be true values
+# def test_other_numbers(self):
+# assert constants.mk_boolean(2) is True
+# assert constants.mk_boolean(-1) is True
+# assert constants.mk_boolean(0.1) is True
+
+ def test_strings(self):
+ assert constants.mk_boolean("true") is True
+ assert constants.mk_boolean("TRUE") is True
+ assert constants.mk_boolean("t") is True
+ assert constants.mk_boolean("yes") is True
+ assert constants.mk_boolean("y") is True
+ assert constants.mk_boolean("on") is True
+
+
+class TestShellExpand:
+ def test_shell_expand_none(self):
+ assert constants.shell_expand(None) is None
+
+ def test_shell_expand_static_path(self):
+ assert constants.shell_expand(u'/usr/local') == u'/usr/local'
+
+ def test_shell_expand_tilde(self, user):
+ assert constants.shell_expand(u'~/local') == os.path.join(user['home'], 'local')
+ assert constants.shell_expand(u'~%s/local' % user['username']) == os.path.join(user['home'], 'local')
+
+ def test_shell_expand_vars(self, user):
+ assert constants.shell_expand(u'$HOME/local') == os.path.join(user['home'], 'local')
+
+ os.environ['ANSIBLE_TEST_VAR'] = '/srv/ansible'
+ assert constants.shell_expand(u'$ANSIBLE_TEST_VAR/local') == os.path.join('/srv/ansible', 'local')
+
+ os.environ['ANSIBLE_TEST_VAR'] = '~'
+ assert constants.shell_expand(u'$ANSIBLE_TEST_VAR/local') == os.path.join(user['home'], 'local')
+
+ del os.environ['ANSIBLE_TEST_VAR']
+ assert constants.shell_expand(u'$ANSIBLE_TEST_VAR/local') == u'$ANSIBLE_TEST_VAR/local'
+
+ def test_expand_relative_abs_path(self):
+ assert constants.shell_expand('/absolute/path', expand_relative_paths=True) == '/absolute/path'
+
+ def test_expand_relative_path_relative_cfg_file(self, cfg_file):
+ assert constants.shell_expand(u'relative/path', expand_relative_paths=True) == os.path.join(cfg_file, 'relative/path')
+
+ def test_expand_relative_path_relative_cwd(self, cwd, null_cfg_file):
+ assert constants.shell_expand(u'relative/path', expand_relative_paths=True) == os.path.join(cwd, 'relative/path')
+
+
+# configparser object
+class TestGetConfig:
+ def test_from_config_file(self, cfgparser):
+ assert constants.get_config(cfgparser, 'defaults', 'defaults_one', 'ANSIBLE_TEST_VAR', 'foo', value_type=None) == 'data_defaults_one'
+ assert constants.get_config(cfgparser, 'level1', 'level1_one', 'ANSIBLE_TEST_VAR', 'foo', value_type=None) == 'data_level1_one'
+
+ def test_from_env_var(self, cfgparser):
+ os.environ['ANSIBLE_TEST_VAR'] = 'bar'
+
+ assert constants.get_config(cfgparser, 'defaults', 'unknown', 'ANSIBLE_TEST_VAR', 'foo', value_type=None) == 'bar'
+ assert constants.get_config(cfgparser, 'unknown', 'defaults_one', 'ANSIBLE_TEST_VAR', 'foo', value_type=None) == 'bar'
+
+ del os.environ['ANSIBLE_TEST_VAR']
+
+ def test_from_default(self, cfgparser):
+ assert constants.get_config(cfgparser, 'defaults', 'unknown', 'ANSIBLE_TEST_VAR', 'foo', value_type=None) == u'foo'
+ assert constants.get_config(cfgparser, 'unknown', 'defaults_one', 'ANSIBLE_TEST_VAR', 'foo', value_type=None) == u'foo'
+
+ def test_value_type_boolean(self, cfgparser):
+ assert constants.get_config(cfgparser, 'defaults', 'unknown', 'ANSIBLE_TEST_VAR', 'on', value_type='boolean') is True
+ assert constants.get_config(cfgparser, 'defaults', 'unknown', 'ANSIBLE_TEST_VAR', True, value_type='boolean') is True
+ assert constants.get_config(cfgparser, 'defaults', 'unknown', 'ANSIBLE_TEST_VAR', 'other', value_type='boolean') is False
+
+ def test_value_type_integer(self, cfgparser):
+ assert constants.get_config(cfgparser, 'defaults', 'unknown', 'ANSIBLE_TEST_VAR', '10', value_type='integer') == 10
+ assert constants.get_config(cfgparser, 'defaults', 'unknown', 'ANSIBLE_TEST_VAR', 10, value_type='integer') == 10
+
+ def test_value_type_float(self, cfgparser):
+ assert constants.get_config(cfgparser, 'defaults', 'unknown', 'ANSIBLE_TEST_VAR', '10', value_type='float') == 10.0
+ assert constants.get_config(cfgparser, 'defaults', 'unknown', 'ANSIBLE_TEST_VAR', 10, value_type='float') == 10.0
+ assert constants.get_config(cfgparser, 'defaults', 'unknown', 'ANSIBLE_TEST_VAR', '11.5', value_type='float') == 11.5
+ assert constants.get_config(cfgparser, 'defaults', 'unknown', 'ANSIBLE_TEST_VAR', 11.5, value_type='float') == 11.5
+
+ def test_value_type_list(self, cfgparser):
+ assert constants.get_config(cfgparser, 'defaults', 'unknown', 'ANSIBLE_TEST_VAR', 'one,two,three', value_type='list') == ['one', 'two', 'three']
+ assert constants.get_config(cfgparser, 'defaults', 'unknown', 'ANSIBLE_TEST_VAR', ['one', 'two', 'three'], value_type='list') == ['one', 'two', 'three']
+
+ def test_value_type_none(self, cfgparser):
+ assert constants.get_config(cfgparser, 'defaults', 'unknown', 'ANSIBLE_TEST_VAR', 'None', value_type='none') is None
+ assert constants.get_config(cfgparser, 'defaults', 'unknown', 'ANSIBLE_TEST_VAR', None, value_type='none') is None
+
+ def test_value_type_path(self, cfgparser, user, cfg_file):
+ assert constants.get_config(cfgparser, 'defaults', 'unknown', 'ANSIBLE_TEST_VAR', '~/local', value_type='path') == os.path.join(user['home'], 'local')
+ assert constants.get_config(cfgparser, 'defaults', 'unknown', 'ANSIBLE_TEST_VAR', 'local', value_type='path') == 'local'
+ assert constants.get_config(cfgparser, 'defaults', 'unknown', 'ANSIBLE_TEST_VAR', 'local', value_type='path', expand_relative_paths=True) \
+ == os.path.join(cfg_file, 'local')
+
+# Need to implement tests for these
+# def test_value_type_pathlist(self, cfgparser):
+# pass
+#
+# def test_value_type_string(self, cfgparser):
+# pass
+#
+# def test_value_type_temppath(self, cfgparser):
+# pass
+
+
+# Need to test this
+#def test_load_config_file():
+# pass
+