feat(canvas): 自由画布 - 增强空白起点、外观设置与节点连接体验 (#356)

web/test/canvas-starter.test.ts

@@ -0,0 +1,21 @@
+import { describe, expect, test } from "bun:test";
+
+import { resolveCanvasEmptyStateKind } from "../src/lib/canvas/canvas-starter";
+
+describe("canvas starter", () => {
+    test("offers the guided entry for a new short-drama canvas", () => {
+        expect(resolveCanvasEmptyStateKind({ nodeCount: 0, shortDramaEnabled: true, isProjectLinked: false })).toBe("guided");
+    });
+
+    test("persists the freeform choice while the canvas remains empty", () => {
+        expect(resolveCanvasEmptyStateKind({ nodeCount: 0, shortDramaEnabled: true, isProjectLinked: false, starterMode: "freeform" })).toBe("freeform");
+    });
+
+    test("keeps linked projects on their project-specific empty state", () => {
+        expect(resolveCanvasEmptyStateKind({ nodeCount: 0, shortDramaEnabled: true, isProjectLinked: true, starterMode: "freeform" })).toBe("linked");
+    });
+
+    test("hides every starter after the first node is created", () => {
+        expect(resolveCanvasEmptyStateKind({ nodeCount: 1, shortDramaEnabled: true, isProjectLinked: false, starterMode: "freeform" })).toBe("none");
+    });
+});