Add tests for compose file 'scale: 0'

Signed-off-by: Jonathan Cremin <[email protected]>

tests/acceptance/cli_test.py

@@ -2505,10 +2505,12 @@ class CLITestCase(DockerClientTestCase):
         self.dispatch(['up', '-d'])
         assert len(project.get_service('web').containers()) == 2
         assert len(project.get_service('db').containers()) == 1
+        assert len(project.get_service('worker').containers()) == 0
 
-        self.dispatch(['up', '-d', '--scale', 'web=3'])
+        self.dispatch(['up', '-d', '--scale', 'web=3', '--scale', 'worker=1'])
         assert len(project.get_service('web').containers()) == 3
         assert len(project.get_service('db').containers()) == 1
+        assert len(project.get_service('worker').containers()) == 1
 
     def test_up_scale_scale_down(self):
         self.base_dir = 'tests/fixtures/scale'
@@ -2517,22 +2519,26 @@ class CLITestCase(DockerClientTestCase):
         self.dispatch(['up', '-d'])
         assert len(project.get_service('web').containers()) == 2
         assert len(project.get_service('db').containers()) == 1
+        assert len(project.get_service('worker').containers()) == 0
 
         self.dispatch(['up', '-d', '--scale', 'web=1'])
         assert len(project.get_service('web').containers()) == 1
         assert len(project.get_service('db').containers()) == 1
+        assert len(project.get_service('worker').containers()) == 0
 
     def test_up_scale_reset(self):
         self.base_dir = 'tests/fixtures/scale'
         project = self.project
 
-        self.dispatch(['up', '-d', '--scale', 'web=3', '--scale', 'db=3'])
+        self.dispatch(['up', '-d', '--scale', 'web=3', '--scale', 'db=3', '--scale', 'worker=3'])
         assert len(project.get_service('web').containers()) == 3
         assert len(project.get_service('db').containers()) == 3
+        assert len(project.get_service('worker').containers()) == 3
 
         self.dispatch(['up', '-d'])
         assert len(project.get_service('web').containers()) == 2
         assert len(project.get_service('db').containers()) == 1
+        assert len(project.get_service('worker').containers()) == 0
 
     def test_up_scale_to_zero(self):
         self.base_dir = 'tests/fixtures/scale'
@@ -2541,10 +2547,12 @@ class CLITestCase(DockerClientTestCase):
         self.dispatch(['up', '-d'])
         assert len(project.get_service('web').containers()) == 2
         assert len(project.get_service('db').containers()) == 1
+        assert len(project.get_service('worker').containers()) == 0
 
-        self.dispatch(['up', '-d', '--scale', 'web=0', '--scale', 'db=0'])
+        self.dispatch(['up', '-d', '--scale', 'web=0', '--scale', 'db=0', '--scale', 'worker=0'])
         assert len(project.get_service('web').containers()) == 0
         assert len(project.get_service('db').containers()) == 0
+        assert len(project.get_service('worker').containers()) == 0
 
     def test_port(self):
         self.base_dir = 'tests/fixtures/ports-composefile'

tests/fixtures/scale/docker-compose.yml

@@ -5,5 +5,9 @@ services:
         command: top
         scale: 2
     db:
-      image: busybox
-      command: top
+        image: busybox
+        command: top
+    worker:
+        image: busybox
+        command: top
+        scale: 0