import { buildInterchainQuery } from '../src/interchain';

describe('buildInterchainQuery', () => {
  it('returns empty string with no options', () => {
    expect(buildInterchainQuery()).toBe('');
    expect(buildInterchainQuery({})).toBe('');
  });

  it('encodes perChain (including 0 for all)', () => {
    expect(buildInterchainQuery({ perChain: 1 })).toBe('?perChain=1');
    expect(buildInterchainQuery({ perChain: 0 })).toBe('?perChain=0');
  });

  it('joins chains with commas', () => {
    expect(buildInterchainQuery({ chains: ['1', '0'] })).toBe('?chains=1,0');
  });

  it('combines perChain and chains', () => {
    expect(buildInterchainQuery({ perChain: 2, chains: ['1', '0'] })).toBe(
      '?perChain=2&chains=1,0'
    );
  });

  it('ignores an empty chains array', () => {
    expect(buildInterchainQuery({ chains: [] })).toBe('');
  });
});