/**
* Pagination Utility Tests
* Unit tests for pagination metadata builder
*/
import { describe, expect, test } from 'bun:test';
import { buildPaginationMetadata } from './response-formatter.js';
describe('buildPaginationMetadata', () => {
test('should return correct metadata for first page', () => {
const metadata = buildPaginationMetadata(100, 0, 10);
expect(metadata).toEqual({
total: 100,
offset: 0,
limit: 10,
hasMore: true
});
});
test('should return correct metadata for middle page', () => {
const metadata = buildPaginationMetadata(100, 20, 10);
expect(metadata).toEqual({
total: 100,
offset: 20,
limit: 10,
hasMore: true
});
});
test('should return correct metadata for last page (exact)', () => {
const metadata = buildPaginationMetadata(100, 90, 10);
expect(metadata).toEqual({
total: 100,
offset: 90,
limit: 10,
hasMore: false
});
});
test('should return correct metadata for last page (partial)', () => {
const metadata = buildPaginationMetadata(95, 90, 10);
expect(metadata).toEqual({
total: 95,
offset: 90,
limit: 10,
hasMore: false
});
});
test('should return hasMore=false when offset >= total', () => {
const metadata = buildPaginationMetadata(100, 100, 10);
expect(metadata).toEqual({
total: 100,
offset: 100,
limit: 10,
hasMore: false
});
});
test('should handle single result set', () => {
const metadata = buildPaginationMetadata(1, 0, 10);
expect(metadata).toEqual({
total: 1,
offset: 0,
limit: 10,
hasMore: false
});
});
test('should handle empty result set', () => {
const metadata = buildPaginationMetadata(0, 0, 10);
expect(metadata).toEqual({
total: 0,
offset: 0,
limit: 10,
hasMore: false
});
});
test('should calculate hasMore correctly at boundary', () => {
// offset + limit exactly equals total
const metadata = buildPaginationMetadata(50, 40, 10);
expect(metadata.hasMore).toBe(false);
});
test('should calculate hasMore correctly just before boundary', () => {
// offset + limit is one less than total
const metadata = buildPaginationMetadata(50, 39, 10);
expect(metadata.hasMore).toBe(true);
});
});
