tests: add docker backend

Signed-off-by: Alfredo Deza <alfredo@deza.pe>

diff --git a/remoto/tests/backends/test_docker.py b/remoto/tests/backends/test_docker.py
new file mode 100644 (file)
index 0000000..fa31a24
--- /dev/null
+++ b/remoto/tests/backends/test_docker.py
@@ -0,0 +1,55 @@
+from pytest import raises
+from remoto.backends import docker
+
+
+class TestDockerConnection(object):
+
+    def test_missing_container_identifier(self):
+        with raises(TypeError):
+            docker.DockerConnection(hostname='node1')
+
+    def test_defaults_to_localhost_name(self):
+        conn = docker.DockerConnection(container_name='container-1')
+        assert conn.hostname == 'localhost'
+
+    def test_defaults_to_localhost_id(self):
+        conn = docker.DockerConnection(container_id='asdf-lkjh')
+        assert conn.hostname == 'localhost'
+
+
+class TestCommandTemplate(object):
+
+    def test_with_user(self):
+        conn = docker.DockerConnection(container_id='asdf-lkjh', user='root')
+        tmpl = conn.command_template()
+        assert tmpl == [
+            'docker', 'exec', '-i',
+            '-u', 'root',
+            'asdf-lkjh', '/bin/sh', '-c']
+
+    def test_no_user(self):
+        conn = docker.DockerConnection(container_id='asdf-lkjh')
+        tmpl = conn.command_template()
+        assert tmpl == [
+            'docker', 'exec', '-i',
+            'asdf-lkjh', '/bin/sh', '-c'
+        ]
+
+
+class TestCommand(object):
+
+    def test_user_conn_appends(self):
+        conn = docker.DockerConnection(container_id='asdf-lkjh', user='root')
+        result = conn.cmd(['ceph', '--version'])
+        assert result == [
+            'docker', 'exec', '-i', '-u', 'root',
+            'asdf-lkjh', '/bin/sh', '-c', 'ceph --version'
+        ]
+
+    def test_default_appends(self):
+        conn = docker.DockerConnection(container_id='asdf-lkjh')
+        result = conn.cmd(['ceph', 'health'])
+        assert result == [
+            'docker', 'exec', '-i',
+            'asdf-lkjh', '/bin/sh', '-c', 'ceph health'
+        ]