test(api): cover assistant holiday calendar reads

packages/api/src/__tests__/assistant-tools-holiday-calendar-get-errors.test.ts

@@ -0,0 +1,31 @@
+import { beforeEach, describe, expect, it, vi } from "vitest";
+
+import {
+  createToolContext,
+  executeTool,
+} from "./assistant-tools-holiday-read-test-helpers.js";
+
+describe("assistant holiday calendar get tools", () => {
+  beforeEach(() => {
+    vi.clearAllMocks();
+  });
+
+  it("returns a stable error when a holiday calendar cannot be found by identifier", async () => {
+    const ctx = createToolContext({
+      holidayCalendar: {
+        findUnique: vi.fn().mockResolvedValue(null),
+        findFirst: vi.fn().mockResolvedValue(null),
+      },
+    });
+
+    const result = await executeTool(
+      "get_holiday_calendar",
+      JSON.stringify({ identifier: "Missing Calendar" }),
+      ctx,
+    );
+
+    expect(JSON.parse(result.content)).toEqual({
+      error: "Holiday calendar not found: Missing Calendar",
+    });
+  });
+});