unleash-server/dist/lib/services/client-spec-service.test.js

Unleash is an enterprise ready feature flag service. It provides different strategies for handling feature flags.

import { ClientSpecService } from './client-spec-service.js';
import getLogger from '../../test/fixtures/no-logger.js';
test('ClientSpecService validation', async () => {
    const service = new ClientSpecService({ getLogger });
    const fn = service.versionSupportsSpec.bind(service);
    expect(fn('segments', undefined)).toEqual(false);
    expect(fn('segments', '')).toEqual(false);
    expect(() => fn('segments', 'a')).toThrow('Invalid prefix');
    expect(() => fn('segments', '1.2')).toThrow('Invalid SemVer');
    expect(() => fn('segments', 'v1.2.3')).toThrow('Invalid prefix');
    expect(() => fn('segments', '=1.2.3')).toThrow('Invalid prefix');
    expect(() => fn('segments', '1.2.3.4')).toThrow('Invalid SemVer');
});
test('ClientSpecService segments', async () => {
    const service = new ClientSpecService({ getLogger });
    const fn = service.versionSupportsSpec.bind(service);
    expect(fn('segments', '0.0.0')).toEqual(false);
    expect(fn('segments', '1.0.0')).toEqual(false);
    expect(fn('segments', '4.1.9')).toEqual(false);
    expect(fn('segments', '4.2.0')).toEqual(true);
    expect(fn('segments', '4.2.1')).toEqual(true);
    expect(fn('segments', '5.0.0')).toEqual(true);
});
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