feat: add extensive test suite

components/chooser/api.ts

@@ -3,11 +3,14 @@
 import { adminCheck } from "@/lib/auth";
 import { db } from "@/lib/db";
 import { cdn } from "@/lib/db/schema";
+import { listFilesService } from "./service";
 
 export async function listFiles() {
-  if (!(await adminCheck())) throw "Unauthorized";
-
-  return await db
-    .select({ id: cdn.id, name: cdn.name, size: cdn.size, type: cdn.type })
-    .from(cdn);
+  return listFilesService({
+    adminCheck,
+    list: () =>
+      db
+        .select({ id: cdn.id, name: cdn.name, size: cdn.size, type: cdn.type })
+        .from(cdn),
+  });
 }

components/chooser/service.test.ts

@@ -0,0 +1,24 @@
+import { describe, expect, mock, test } from "bun:test";
+import { listFilesService } from "./service";
+
+describe("listFilesService", () => {
+  test("requires admin before querying CDN files", async () => {
+    const list = mock(async () => []);
+    expect(
+      listFilesService({ adminCheck: async () => false, list }),
+    ).rejects.toBe("Unauthorized");
+    expect(list).not.toHaveBeenCalled();
+  });
+
+  test("returns the chooser projection from its query", async () => {
+    const files = [
+      { id: "asset", name: "image.png", size: "4", type: "image/png" },
+    ];
+    expect(
+      await listFilesService({
+        adminCheck: async () => true,
+        list: async () => files,
+      }),
+    ).toBe(files);
+  });
+});

components/chooser/service.ts

@@ -0,0 +1,7 @@
+export async function listFilesService<T>(dependencies: {
+  adminCheck: () => Promise<unknown>;
+  list: () => Promise<T[]>;
+}) {
+  if (!(await dependencies.adminCheck())) throw "Unauthorized";
+  return dependencies.list();
+}