Move ServiceTestCase to separate module

plum/tests/testcases.py

@@ -0,0 +1,30 @@
+from docker import Client
+from plum.service import Service
+import os
+from unittest import TestCase
+
+
+class ServiceTestCase(TestCase):
+    @classmethod
+    def setUpClass(cls):
+        if os.environ.get('DOCKER_URL'):
+            cls.client = Client(os.environ['DOCKER_URL'])
+        else:
+            cls.client = Client()
+        cls.client.pull('ubuntu')
+
+    def setUp(self):
+        for c in self.client.containers(all=True):
+            self.client.kill(c['Id'])
+            self.client.remove_container(c['Id'])
+
+    def create_service(self, name):
+        return Service(
+            name=name,
+            client=self.client,
+            image="ubuntu",
+            command=["/bin/sleep", "300"],
+        )
+
+
+