Add the process environment to zuul.conf parser

This will allow users to set environment variables with sensitive
strings like passwords, but keep a single config file. This comes
in handy when using Kubernetes in particular, as it wants to
handle sensitive data and templated config files in a very different
manner.

Change-Id: I38f6c4da82e1647ad197908f19ea6df23e04fc32

1 files changed, 33 insertions, 0 deletions

diff --git a/tests/unit/test_cmd.py b/tests/unit/test_cmd.py
new file mode 100644
index 000000000..325ccd284
--- /dev/null
+++ b/tests/unit/test_cmd.py
@@ -0,0 +1,33 @@
+# Copyright 2013 Hewlett-Packard Development Company, L.P.
+#
+# 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 fixtures
+import tempfile
+import testtools
+
+import zuul.cmd
+
+
+class TestCmd(testtools.TestCase):
+    def test_read_config_with_environment(self):
+        "Test that readConfig interpolates environment vars"
+
+        with tempfile.NamedTemporaryFile() as test_config:
+            test_config.write(b'[DEFAULT]\nfoo=%(ENV_TEST)s\n')
+            test_config.flush()
+            with fixtures.EnvironmentVariable('ENV_TEST', 'baz'):
+                app = zuul.cmd.ZuulApp()
+                app.parseArguments(['-c', test_config.name])
+                app.readConfig()
+                self.assertEquals('baz', app.config.get('DEFAULT', 'foo'))