feat: expand backend admin marketplace and scaling

src/common/utils/pagination.util.spec.ts

@@ -0,0 +1,37 @@
+import { buildPaginatedResponse } from './pagination.util';
+
+describe('pagination util', () => {
+  it('builds offset pagination metadata', () => {
+    const result = buildPaginatedResponse(['a', 'b'], {
+      page: 2,
+      limit: 2,
+      total: 5,
+      offset: 2,
+    });
+
+    expect(result.count).toBe(2);
+    expect(result.totalPages).toBe(3);
+    expect(result.pagination.hasNextPage).toBe(true);
+    expect(result.pagination.hasPreviousPage).toBe(true);
+    expect(result.pagination.nextPage).toBe(3);
+    expect(result.pagination.previousPage).toBe(1);
+    expect(result.pagination.mode).toBe('offset');
+  });
+
+  it('builds cursor pagination metadata', () => {
+    const result = buildPaginatedResponse(['a'], {
+      page: 1,
+      limit: 2,
+      total: 3,
+      offset: 0,
+      currentCursor: 'cursor-a',
+      nextCursor: 'cursor-b',
+      mode: 'cursor',
+    });
+
+    expect(result.nextCursor).toBe('cursor-b');
+    expect(result.pagination.currentCursor).toBe('cursor-a');
+    expect(result.pagination.nextCursor).toBe('cursor-b');
+    expect(result.pagination.mode).toBe('cursor');
+  });
+});