import { describe, it, expect } from 'vitest';

describe('Cost Ingestion Validation', () => {
  it('rejects negative hourly cost', () => {
    const cost = -5.00;
    expect(cost >= 0).toBe(false);
  });

  it('accepts zero cost', () => {
    const cost = 0;
    expect(cost >= 0).toBe(true);
  });

  it('batch size limited to 100', () => {
    const events = Array.from({ length: 101 }, (_, i) => ({ account_id: 'a', resource_type: 'ec2', hourly_cost: i }));
    expect(events.length <= 100).toBe(false);

    const validBatch = events.slice(0, 100);
    expect(validBatch.length <= 100).toBe(true);
  });
});

describe('Anomaly Snooze', () => {
  it('accepts 1-168 hour range', () => {
    expect(1 >= 1 && 1 <= 168).toBe(true);
    expect(168 >= 1 && 168 <= 168).toBe(true);
    expect(0 >= 1).toBe(false);
    expect(169 <= 168).toBe(false);
  });
});

describe('Optimistic Locking', () => {
  it('detects version conflict', () => {
    const currentVersion = 5;
    const expectedVersion = 4; // Stale read
    expect(currentVersion === expectedVersion).toBe(false);
  });

  it('allows update when versions match', () => {
    const currentVersion = 5;
    const expectedVersion = 5;
    expect(currentVersion === expectedVersion).toBe(true);
  });
});
