xref: /expo/packages/@expo/cli/src/start/__tests__/resolveOptions-test.ts (revision 8df9096f)

import { asMock } from '../../__tests__/asMock';
import { hasDirectDevClientDependency } from '../../utils/analytics/getDevClientProperties';
import { resolvePortAsync } from '../../utils/port';
import { resolveHostType, resolveOptionsAsync, resolvePortsAsync } from '../resolveOptions';

jest.mock('../../utils/port', () => {
  return {
    resolvePortAsync: jest.fn(),
  };
});
jest.mock('../../utils/scheme', () => {
  return {
    getOptionalDevClientSchemeAsync: jest.fn(async () => []),
  };
});
jest.mock('../../utils/analytics/getDevClientProperties', () => {
  return {
    hasDirectDevClientDependency: jest.fn(() => false),
  };
});

describe(resolveOptionsAsync, () => {
  it(`prevents using --dev-client and --go together`, async () => {
    await expect(
      resolveOptionsAsync('/noop', {
        '--dev-client': true,
        '--go': true,
      })
    ).rejects.toThrowErrorMatchingInlineSnapshot(
      `"Cannot use both --dev-client and --go together."`
    );
  });
  it(`--go sets devClient to false`, async () => {
    expect(
      (
        await resolveOptionsAsync('/noop', {
          '--go': true,
        })
      ).devClient
    ).toBe(false);
  });
  it(`defaults to devClient being false`, async () => {
    expect((await resolveOptionsAsync('/noop', {})).devClient).toBe(false);
  });
  it(`sets devClient to true`, async () => {
    expect((await resolveOptionsAsync('/noop', { '--dev-client': true })).devClient).toBe(true);
  });
  it(`infers that devClient should be true`, async () => {
    jest.mocked(hasDirectDevClientDependency).mockReturnValueOnce(true);
    expect((await resolveOptionsAsync('/noop', {})).devClient).toBe(true);
  });
  it(`--go forces devClient to false`, async () => {
    jest.mocked(hasDirectDevClientDependency).mockReturnValueOnce(true);
    expect((await resolveOptionsAsync('/noop', { '--go': true })).devClient).toBe(false);
  });
});

describe(resolveHostType, () => {
  it(`resolves no options`, () => {
    expect(resolveHostType({})).toBe('lan');
  });
  it(`resolves host type`, () => {
    expect(resolveHostType({ lan: true })).toBe('lan');
    expect(resolveHostType({ localhost: true })).toBe('localhost');
    expect(resolveHostType({ tunnel: true })).toBe('tunnel');
    expect(resolveHostType({ offline: true })).toBe('lan');
    expect(resolveHostType({ host: 'tunnel' })).toBe('tunnel');
    // Default
    expect(resolveHostType({})).toBe('lan');
  });
  it(`asserts invalid host type`, () => {
    expect(() => resolveHostType({ host: 'bacon' })).toThrow();
  });
  it(`asserts conflicting options`, () => {
    expect(() => resolveHostType({ localhost: true, offline: true })).toThrow(/Specify at most/);
    expect(() => resolveHostType({ localhost: true, host: 'lan' })).toThrow(/Specify at most/);
    expect(() => resolveHostType({ localhost: true, lan: true })).toThrow(/Specify at most/);
    expect(() => resolveHostType({ tunnel: true, lan: true })).toThrow(/Specify at most/);
  });
});

describe(resolvePortsAsync, () => {
  beforeEach(() => {
    asMock(resolvePortAsync).mockImplementation(async (root, { defaultPort, fallbackPort }) => {
      if (typeof defaultPort === 'string' && defaultPort) {
        return parseInt(defaultPort, 10);
      } else if (typeof defaultPort === 'number' && defaultPort) {
        return defaultPort;
      }
      return fallbackPort;
    });
  });
  it(`resolves default port for metro`, async () => {
    await expect(resolvePortsAsync('/noop', {}, { webOnly: false })).resolves.toStrictEqual({
      metroPort: 8081,
    });
  });
  it(`resolves default port with given port`, async () => {
    await expect(
      resolvePortsAsync('/noop', { port: 1234 }, { webOnly: false })
    ).resolves.toStrictEqual({
      metroPort: 1234,
    });
    await expect(
      resolvePortsAsync('/noop', { port: 1234, devClient: true }, { webOnly: false })
    ).resolves.toStrictEqual({
      metroPort: 1234,
    });
    await expect(
      resolvePortsAsync('/noop', { port: 1234 }, { webOnly: true })
    ).resolves.toStrictEqual({
      webpackPort: 1234,
    });
  });
  it(`resolves default port for metro with dev client`, async () => {
    await expect(
      resolvePortsAsync('/noop', { devClient: true }, { webOnly: false })
    ).resolves.toStrictEqual({
      metroPort: 8081,
    });
  });
  it(`resolves default port for webpack`, async () => {
    await expect(resolvePortsAsync('/noop', {}, { webOnly: true })).resolves.toStrictEqual({
      webpackPort: 19006,
    });
    // dev client changes nothing on Webpack...
    await expect(
      resolvePortsAsync('/noop', { devClient: true }, { webOnly: true })
    ).resolves.toStrictEqual({
      webpackPort: 19006,
    });
  });
});