describe('API Client (Simple)', () => {
it('should test URL building with query parameters', () => {
const buildUrl = (baseUrl: string, endpoint: string, params?: Record<string, any>) => {
let url = `${baseUrl}${endpoint}`;
if (params) {
const queryParams = new URLSearchParams();
for (const [key, value] of Object.entries(params)) {
if (Array.isArray(value)) {
value.forEach(item => queryParams.append(key, String(item)));
} else if (value !== undefined && value !== null) {
queryParams.append(key, String(value));
}
}
if (queryParams.toString()) {
url += `?${queryParams.toString()}`;
}
}
return url;
};
expect(buildUrl('https://api.example.com', '/users')).toBe('https://api.example.com/users');
expect(buildUrl('https://api.example.com', '/users', { limit: 10, page: 1 }))
.toBe('https://api.example.com/users?limit=10&page=1');
expect(buildUrl('https://api.example.com', '/users', { tags: ['tag1', 'tag2'] }))
.toBe('https://api.example.com/users?tags=tag1&tags=tag2');
});
it('should test retry delay calculation', () => {
const calculateRetryDelay = (attempt: number) => {
return Math.min(1000 * Math.pow(2, attempt), 5000);
};
expect(calculateRetryDelay(0)).toBe(1000);
expect(calculateRetryDelay(1)).toBe(2000);
expect(calculateRetryDelay(2)).toBe(4000);
expect(calculateRetryDelay(3)).toBe(5000); // capped at 5000
expect(calculateRetryDelay(10)).toBe(5000); // still capped
});
it('should test endpoint path parameter replacement', () => {
const buildEndpoint = (template: string, params: Record<string, any>) => {
let endpoint = template;
const usedParams = new Set<string>();
Object.keys(params).forEach(key => {
const placeholder = `{${key}}`;
if (endpoint.includes(placeholder)) {
endpoint = endpoint.replace(placeholder, String(params[key]));
usedParams.add(key);
}
});
// Return remaining params that weren't used in path
const remainingParams: Record<string, any> = {};
Object.keys(params).forEach(key => {
if (!usedParams.has(key)) {
remainingParams[key] = params[key];
}
});
return { endpoint, remainingParams };
};
const result = buildEndpoint('/users/{id}', { id: '123', include: 'profile' });
expect(result.endpoint).toBe('/users/123');
expect(result.remainingParams).toEqual({ include: 'profile' });
});
});
