import {
  DEFAULT_VARROA_THRESHOLD_MITES_PER_DAY,
  varroaThresholdOf,
} from './varroa-threshold';

describe('varroaThresholdOf', () => {
  it('uses the default when no rule exists yet (default rule is active)', () => {
    expect(varroaThresholdOf(null)).toBe(
      DEFAULT_VARROA_THRESHOLD_MITES_PER_DAY,
    );
    expect(DEFAULT_VARROA_THRESHOLD_MITES_PER_DAY).toBe(10);
  });

  it('returns null for an inactive rule', () => {
    expect(
      varroaThresholdOf({
        active: false,
        config: { thresholdMitesPerDay: 7 },
      }),
    ).toBeNull();
  });

  it('returns the configured threshold of an active rule', () => {
    expect(
      varroaThresholdOf({ active: true, config: { thresholdMitesPerDay: 7 } }),
    ).toBe(7);
  });

  it.each([
    ['a string', { thresholdMitesPerDay: 'x' }],
    ['zero', { thresholdMitesPerDay: 0 }],
    ['a negative number', { thresholdMitesPerDay: -1 }],
    ['NaN', { thresholdMitesPerDay: Number.NaN }],
    ['a missing key', {}],
    ['a null config', null],
  ])('falls back to the default for %s', (_label, config) => {
    expect(varroaThresholdOf({ active: true, config })).toBe(
      DEFAULT_VARROA_THRESHOLD_MITES_PER_DAY,
    );
  });
});