refactor(api): extract management level support

packages/api/src/__tests__/management-level-support.test.ts

@@ -0,0 +1,71 @@
+import { TRPCError } from "@trpc/server";
+import { describe, expect, it, vi } from "vitest";
+import {
+  assertManagementLevelDeletable,
+  assertManagementLevelGroupNameAvailable,
+  assertManagementLevelNameAvailable,
+  buildManagementLevelCreateData,
+  buildManagementLevelGroupCreateData,
+  buildManagementLevelGroupUpdateData,
+  buildManagementLevelUpdateData,
+} from "../router/management-level-support.js";
+
+describe("management level support", () => {
+  it("rejects duplicate group names outside the ignored id", async () => {
+    const db = {
+      managementLevelGroup: {
+        findUnique: vi.fn().mockResolvedValue({ id: "group_existing", name: "Team Leads" }),
+      },
+    } as never;
+
+    await expect(assertManagementLevelGroupNameAvailable(db, "Team Leads")).rejects.toBeInstanceOf(TRPCError);
+  });
+
+  it("rejects duplicate level names outside the ignored id", async () => {
+    const db = {
+      managementLevel: {
+        findUnique: vi.fn().mockResolvedValue({ id: "level_existing", name: "Senior Team Lead" }),
+      },
+    } as never;
+
+    await expect(assertManagementLevelNameAvailable(db, "Senior Team Lead")).rejects.toBeInstanceOf(TRPCError);
+  });
+
+  it("builds create and sparse update payloads", () => {
+    expect(buildManagementLevelGroupCreateData({
+      name: "Team Leads",
+      targetPercentage: 0.72,
+      sortOrder: 10,
+    })).toEqual({
+      name: "Team Leads",
+      targetPercentage: 0.72,
+      sortOrder: 10,
+    });
+
+    expect(buildManagementLevelGroupUpdateData({
+      targetPercentage: 0.8,
+    })).toEqual({
+      targetPercentage: 0.8,
+    });
+
+    expect(buildManagementLevelCreateData({
+      name: "Senior Team Lead",
+      groupId: "group_1",
+    })).toEqual({
+      name: "Senior Team Lead",
+      groupId: "group_1",
+    });
+
+    expect(buildManagementLevelUpdateData({
+      groupId: "group_2",
+    })).toEqual({
+      groupId: "group_2",
+    });
+  });
+
+  it("rejects deletion when a level is still assigned", () => {
+    expect(() => assertManagementLevelDeletable({
+      _count: { resources: 2 },
+    })).toThrow(TRPCError);
+  });
+});