lily-sdk/tests/openapi-contracts.test.ts at fix/validate-per-request-timeout · ghzhost/lily-sdk · GitHub

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import { describe, it, expect } from 'vitest';
import {
  generateContracts,
  type OpenApiSpec,
} from '../src/contracts/openapi-generator';

describe('OpenAPI client contracts (issue #97)', () => {
  const spec: OpenApiSpec = {
    openapi: '3.0.0',
    info: { title: 'Lily API', version: '1.0.0' },
    paths: {
      '/v1/payments': {
        get: {
          operationId: 'listPayments',
          parameters: [
            {
              name: 'limit',
              in: 'query',
              required: false,
              schema: { type: 'integer' },
            },
          ],
          responses: {
            '200': {
              content: {
                'application/json': {
                  schema: { $ref: '#/components/schemas/PaymentList' },
                },
              },
            },
          },
        },
        post: {
          operationId: 'createPayment',
          requestBody: {
            content: {
              'application/json': {
                schema: { $ref: '#/components/schemas/CreatePaymentRequest' },
              },
            },
          },
          responses: {
            '200': {
              content: {
                'application/json': {
                  schema: { $ref: '#/components/schemas/Payment' },
                },
              },
            },
          },
        },
      },
      '/v1/payments/{id}': {
        get: {
          operationId: 'getPayment',
          parameters: [
            {
              name: 'id',
              in: 'path',
              required: true,
              schema: { type: 'string' },
            },
          ],
          responses: {
            '200': {
              content: {
                'application/json': {
                  schema: { $ref: '#/components/schemas/Payment' },
                },
              },
            },
          },
        },
        delete: {
          operationId: 'deletePayment',
          parameters: [
            {
              name: 'id',
              in: 'path',
              required: true,
              schema: { type: 'string' },
            },
          ],
          responses: { '204': { description: 'Deleted' } },
        },
      },
    },
  };

  it('generates contracts for all operations', () => {
    const contracts = generateContracts(spec);
    expect(contracts).toHaveLength(4);
  });

  it('extracts operation IDs', () => {
    const contracts = generateContracts(spec);
    const ops = contracts.map((c) => c.operationId);
    expect(ops).toContain('listPayments');
    expect(ops).toContain('createPayment');
    expect(ops).toContain('getPayment');
    expect(ops).toContain('deletePayment');
  });

  it('extracts response types from $ref', () => {
    const contracts = generateContracts(spec);
    const getPayment = contracts.find((c) => c.operationId === 'getPayment');
    expect(getPayment?.responseType).toBe('Payment');
  });

  it('extracts request types from $ref', () => {
    const contracts = generateContracts(spec);
    const createPayment = contracts.find(
      (c) => c.operationId === 'createPayment',
    );
    expect(createPayment?.requestType).toBe('CreatePaymentRequest');
  });

  it('maps parameters with required flag', () => {
    const contracts = generateContracts(spec);
    const getPayment = contracts.find((c) => c.operationId === 'getPayment');
    expect(getPayment?.parameters).toHaveLength(1);
    expect(getPayment?.parameters[0]).toEqual({
      name: 'id',
      in: 'path',
      required: true,
      type: 'string',
    });
  });

  it('handles empty spec gracefully', () => {
    const contracts = generateContracts({
      openapi: '3.0.0',
      info: { title: 'Empty', version: '0' },
      paths: {},
    });
    expect(contracts).toEqual([]);
  });
});