Docker tests (ros-infrastructure#111)

* Add tests for docker.

tests/test_docker.py

@@ -0,0 +1,53 @@
+# Copyright 2018 Open Source Robotics Foundation, 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.
+
+from pkg_resources import resource_filename
+from superflore.docker import Docker
+import unittest
+
+class TestDocker(unittest.TestCase):
+    def get_image(self):
+        docker_file = resource_filename('repoman_docker', 'Dockerfile')
+        dock = Docker(docker_file, 'gentoo_repoman')
+        return dock
+
+    def test_init(self):
+        docker_instance = self.get_image()
+        self.assertTrue(docker_instance.client)
+        self.assertEqual(docker_instance.name, 'gentoo_repoman')
+        self.assertEqual(docker_instance.image, None)
+        self.assertEqual(docker_instance.directory_map, dict())
+
+    def test_map_dir(self):
+        docker_instance = self.get_image()
+        docker_instance.map_directory('/tmp/host', '/tmp/container')
+        tmp = dict()
+        tmp['/tmp/host'] = dict()
+        tmp['/tmp/host']['bind'] = '/tmp/container'
+        tmp['/tmp/host']['mode'] = 'rw'
+        self.assertEqual(docker_instance.directory_map, tmp)
+        docker_instance = self.get_image()
+        docker_instance.map_directory('/tmp/host')
+        tmp = dict()
+        tmp['/tmp/host'] = dict()
+        tmp['/tmp/host']['bind'] = '/tmp/host'
+        tmp['/tmp/host']['mode'] = 'rw'
+        self.assertEqual(docker_instance.directory_map, tmp)
+
+    def test_add_bash_command(self):
+        docker_instance = self.get_image()
+        tmp = list()
+        tmp.append("echo 'hello, world!'")
+        docker_instance.add_bash_command("echo 'hello, world!'")
+        self.assertEqual(docker_instance.bash_cmds, tmp)