Add basic test for device additions

tests/test_config.py

@@ -69,3 +69,63 @@ async def test_config_discovery(tempconfig, vidhub_zeroconf_info, mocked_vidhub_
     assert vidhub_zeroconf_info['device_id'] in config.vidhubs
 
     await config.stop()
+
+
+@pytest.mark.asyncio
+async def test_config_devices(tempconfig):
+    from vidhubcontrol.backends import (
+        DummyBackend, SmartViewDummyBackend, SmartScopeDummyBackend,
+    )
+
+    config = Config.load(str(tempconfig))
+    await config.start()
+
+    for i in range(3):
+        device_id = 'dummy{}'.format(i)
+        vidhub = await DummyBackend.create_async(
+            device_id=device_id,
+            device_name='vidhub{}'.format(i),
+        )
+        smartview = await SmartViewDummyBackend.create_async(
+            device_id=device_id,
+            device_name='smartview{}'.format(i),
+        )
+        smartscope = await SmartScopeDummyBackend.create_async(
+            device_id=device_id,
+            device_name='smartscope{}'.format(i)
+        )
+        if i == 0:
+            config.add_vidhub(vidhub)
+            config.add_smartview(smartview)
+            config.add_smartscope(smartscope)
+        else:
+            config.add_device(vidhub)
+            config.add_device(smartview)
+            config.add_device(smartscope)
+
+    keys_expected = set(('dummy{}'.format(i) for i in range(3)))
+    assert len(config.vidhubs) == len(config.smartviews) == len(config.smartscopes) == 3
+    assert set(config.vidhubs.keys()) == set(config.smartviews.keys()) == set(config.smartscopes.keys()) == keys_expected
+
+    for vidhub in config.vidhubs.values():
+        assert isinstance(vidhub.backend, DummyBackend)
+    for smartview in config.smartviews.values():
+        assert isinstance(smartview.backend, SmartViewDummyBackend)
+    for smartscope in config.smartscopes.values():
+        assert isinstance(smartscope.backend, SmartScopeDummyBackend)
+
+    config2 = Config.load(str(tempconfig))
+    await config2.start()
+
+    assert len(config2.vidhubs) == len(config2.smartviews) == len(config2.smartscopes) == 3
+    assert set(config2.vidhubs.keys()) == set(config2.smartviews.keys()) == set(config2.smartscopes.keys()) == keys_expected
+
+    for vidhub in config2.vidhubs.values():
+        assert isinstance(vidhub.backend, DummyBackend)
+    for smartview in config2.smartviews.values():
+        assert isinstance(smartview.backend, SmartViewDummyBackend)
+    for smartscope in config2.smartscopes.values():
+        assert isinstance(smartscope.backend, SmartScopeDummyBackend)
+
+    await config.stop()
+    await config2.stop()