fix(map): stabilize tiled style rendering

src/components/chat/toolCallStyleHelpers.test.ts

@@ -0,0 +1,50 @@
+import { parseApplyLayerStylePayload } from "./toolCallStyleHelpers";
+
+describe("parseApplyLayerStylePayload", () => {
+  it("accepts a valid snake_case interval contract", () => {
+    expect(
+      parseApplyLayerStylePayload({
+        layer_id: "pipes",
+        style_config: {
+          property: "velocity",
+          classification_method: "custom_breaks",
+          segments: 3,
+          custom_breaks: [0, 1, 2, 3],
+          color_type: "custom",
+          custom_colors: ["#000000", "#777777", "#ffffff"],
+        },
+      }),
+    ).toMatchObject({
+      layerId: "pipes",
+      resetToDefault: false,
+      styleConfig: { segments: 3, customBreaks: [0, 1, 2, 3] },
+    });
+  });
+
+  it("rejects invalid class counts and array cardinalities", () => {
+    expect(
+      parseApplyLayerStylePayload({
+        layer_id: "pipes",
+        style_config: { segments: 1, property: "velocity" },
+      }),
+    ).toBeNull();
+    expect(
+      parseApplyLayerStylePayload({
+        layer_id: "junctions",
+        style_config: {
+          segments: 3,
+          custom_breaks: [0, 1, 2],
+        },
+      }),
+    ).toBeNull();
+  });
+
+  it("keeps camelCase compatibility", () => {
+    expect(
+      parseApplyLayerStylePayload({
+        layerId: "junctions",
+        styleConfig: { opacity: 0.5, colorType: "gradient" },
+      }),
+    ).toMatchObject({ layerId: "junctions", styleConfig: { opacity: 0.5 } });
+  });
+});