diff --git a/bioimage_embed/tests/test_cli.py b/bioimage_embed/tests/test_cli.py
index 19fa8752..37e0f5c9 100644
--- a/bioimage_embed/tests/test_cli.py
+++ b/bioimage_embed/tests/test_cli.py
@@ -123,15 +123,35 @@ def model():
     return "dummy_model"
 
 
+@pytest.fixture
+def cfg_recipe(model):
+    return config.Recipe(model=model)
+
+
+@pytest.fixture
+def cfg_trainer():
+    return config.Trainer(max_epochs=1, max_steps=1, fast_dev_run=True)
+
+
+@pytest.fixture
+def cfg_dataloader():
+    return config.DataLoader(num_workers=0)
+
+
 # TODO double check this is sensible
 @pytest.fixture
-def cfg(model):
-    cfg = config.Config()
-    cfg.dataloader.num_workers = 0  # This avoids processes being forked
-    cfg.trainer.max_epochs = 1
-    cfg.trainer.max_steps = 1
-    cfg.trainer.fast_dev_run = True
-    cfg.recipe.model = model
+def cfg(cfg_recipe, cfg_trainer, cfg_dataloader):
+    cfg = config.Config(
+        recipe=cfg_recipe, trainer=cfg_trainer, dataloader=cfg_dataloader
+    )
+    return cfg
+    # This is an alternative way to create a config object but it is less flexible and if the config object is changed in the future, this will break, i.e validation is not guaranteed
+
+    # cfg.dataloader.num_workers = 0  # This avoids processes being forked
+    # cfg.trainer.max_epochs = 1
+    # cfg.trainer.max_steps = 1
+    # cfg.trainer.fast_dev_run = True
+    # cfg.recipe.model = model
     return cfg