Add tests that ensure parameter & input orders are retained (#155)

examples/keep-order.yaml

@@ -0,0 +1,17 @@
+- step:
+    name: sing a melody
+    image: python:3.12
+    command: echo {parameter:do} {parameter:re} {parameter:mi} {parameter:fa} {parameter:so} {parameter:la} {parameter:ti}
+    parameters:
+      - name: do
+      - name: re
+      - name: mi
+      - name: fa
+      - name: so
+      - name: la
+      - name: ti
+    inputs:
+      - name: drums
+      - name: bass
+      - name: guitar
+      - name: vocals

tests/conftest.py

@@ -21,3 +21,4 @@
 input_extras_config = config_fixture("input-extras.yaml")
 timeouts_config = config_fixture("timeouts-example.yaml")
 edge_merge_mode_config = config_fixture("edge-merge-mode.yaml")
+keep_order_config = config_fixture("keep-order.yaml")

tests/test_order_retention.py

@@ -0,0 +1,8 @@
+def test_parameter_order_is_retained(keep_order_config):
+    step = keep_order_config.steps["sing a melody"]
+    assert list(step.parameters.keys()) == ["do", "re", "mi", "fa", "so", "la", "ti"]
+
+
+def test_input_order_is_retained(keep_order_config):
+    step = keep_order_config.steps["sing a melody"]
+    assert list(step.inputs.keys()) == ["drums", "bass", "guitar", "vocals"]

tests/utils.py

@@ -20,7 +20,7 @@ def _load_config(filename, roundtrip):
 
 
 def config_fixture(name):
-    @pytest.fixture(params=[False, True], ids=["direct", "roundtrip"])
+    @pytest.fixture(params=[False, True], ids=[f"{name}_direct", f"{name}_roundtrip"])
     def _config_fixture(request):
         return _load_config(name, roundtrip=request.param)