fix naming

tests/node_tests/colormap.py

@@ -0,0 +1,25 @@
+import json
+
+
+def test_color_map_node():
+    from backend.nodes.colormap import ColorMap
+
+    node = ColorMap()
+
+    preset, = node.build(mode="preset", preset="magma", stops_json="[]")
+    assert preset["mode"] == "preset"
+    assert preset["preset"] == "magma"
+
+    custom, = node.build(
+        mode="custom",
+        preset="viridis",
+        stops_json=json.dumps([
+            {"position": 0.0, "color": "#000000"},
+            {"position": 0.4, "color": "#00ff00"},
+            {"position": 1.0, "color": "#ffffff"},
+        ]),
+    )
+    assert custom["mode"] == "custom"
+    assert custom["stops"][0]["position"] == 0.0
+    assert custom["stops"][-1]["position"] == 1.0
+    assert len(custom["stops"]) == 3