Enable writing tests for fuelmenu

Added running tests with py.test in fuelmenu
Added 2 simple tests for settings and cleaned settings.py a
little bit
Ignored tests .cache dir
Removed not needed requirements.txt since setup.py has it all

Change-Id: Id6869407273b38c57f3d3e7c8dff635829178348
Partial-Bug: #1365391

fuelmenu/settings.py

@@ -13,11 +13,9 @@
 # under the License.
 
 import collections
-try:
-    from collections import OrderedDict
-except Exception:
-    # python 2.6 or earlier use backport
-    from ordereddict import OrderedDict
+import logging
+
+from ordereddict import OrderedDict
 import yaml
 
 
@@ -77,9 +75,7 @@ yaml.representer.Representer.add_representer(OrderedDict, yaml.representer.
                                              SafeRepresenter.represent_dict)
 
 
-class Settings():
-    def __init__(self):
-        pass
+class Settings(object):
 
     def read(self, yamlfile):
         try:
@@ -88,8 +84,7 @@ class Settings():
             return settings
         except Exception:
             if yamlfile is not None:
-                import logging
-                logging.error("Unable to read YAML: %s" % yamlfile)
+                logging.error("Unable to read YAML: %s", yamlfile)
             return OrderedDict()
 
     def write(self, newvalues, tree=None, defaultsfile='settings.yaml',
@@ -101,25 +96,3 @@ class Settings():
         yaml.dump(settings, outfile, default_style='"',
                   default_flow_style=False)
         return True
-
-if __name__ == '__main__':
-
-    sample = """
-    one:
-        two: fish
-        red: fish
-        blue: fish
-    two:
-        a: yes
-        b: no
-        c: null
-    """
-    infile = file('settings.yaml', 'r')
-    data = yaml.load(infile)
-    #data = yaml.load(infile, OrderedDictYAMLLoader)
-    #data = yaml.load(textwrap.dedent(sample), OrderedDictYAMLLoader)
-    outfile = file("testout", 'w')
-    yaml.dump(data, outfile, default_flow_style=False)
-
-    #assert type(data) is OrderedDict
-    print(data.items())

fuelmenu/tests/test_settings.py

@@ -0,0 +1,48 @@
+# -*- coding: utf-8 -*-
+
+#    Copyright 2015 Mirantis, Inc.
+#
+#    Licensed under the Apache License, Version 2.0 (the "License"); you may
+#    not use this file except in compliance with the License. You may obtain
+#    a copy of the License at
+#
+#         http://www.apache.org/licenses/LICENSE-2.0
+#
+#    Unless required by applicable law or agreed to in writing, software
+#    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+#    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+#    License for the specific language governing permissions and limitations
+#    under the License.
+
+import mock
+import ordereddict
+
+from fuelmenu import settings
+
+
+def test_read_settings(tmpdir):
+    yaml_file = tmpdir.join("yamlfile.yaml")
+    yaml_file.write("""
+sample:
+    - one
+    - a: b
+      c: d
+""")
+    data = settings.Settings().read(yaml_file.strpath)
+    assert data == {
+        'sample': [
+            'one',
+            {
+                'a': 'b',
+                'c': 'd',
+            }
+        ]
+    }
+    assert isinstance(data, ordereddict.OrderedDict)
+
+
+@mock.patch('fuelmenu.settings.file', side_effect=Exception('Error'))
+def test_read_settings_with_error(_):
+    data = settings.Settings().read('some_path')
+    assert data == {}
+    assert isinstance(data, ordereddict.OrderedDict)

requirements.txt

@@ -1,5 +0,0 @@
-netaddr>=0.7.5
-OrderedDict>=1.1
-PyYAML>=3.10
-netifaces>=0.5
-urwid>=1.1.1

test-requirements.txt

@@ -1 +1,2 @@
-hacking==0.7
+pytest==2.8.0
+mock==1.3.0

tox.ini

@@ -7,9 +7,10 @@ envlist = py26,py27,pep8
 usedevelop = True
 install_command = pip install --allow-external -U {opts} {packages}
 setenv = VIRTUAL_ENV={envdir}
-deps = -r{toxinidir}/requirements.txt
-       -r{toxinidir}/test-requirements.txt
+deps =
+    -r{toxinidir}/test-requirements.txt
 commands =
+  py.test -vv {posargs:fuelmenu/tests}
 
 [tox:jenkins]
 downloadcache = ~/cache/pip