/**
 * SyncEngine Tests
 *
 * Tests for the core sync engine with mocked dependencies.
 */
import type { SkillVersionRepository } from '../../src/repositories/SkillVersionRepository.js';
import type { SkillsmithApiClient, ApiSearchResult } from '../../src/api/client.js';
/**
 * Create a mock SkillVersionRepository for testing.
 * All methods return resolved promises so SyncEngine can call recordVersion
 * after each upsert without errors.
 */
export declare function createMockSkillVersionRepo(): SkillVersionRepository;
/**
 * Create a mock skill for testing
 * Note: quality_score must be between 0 and 1 (database constraint)
 */
export declare function createMockSkill(id: string, updatedAt?: string): ApiSearchResult;
/**
 * Create a mock API client with customizable behavior.
 *
 * SyncEngine fetches via `syncRegistry()` (the Team/Enterprise bulk
 * registry-enumeration endpoint, SMI-6197) rather than the old 8-broad-query
 * abuse of `search()` — this mock paginates the same `skills` fixture array
 * against `syncRegistry`'s `{ limit, offset, since }` signature. It does NOT
 * filter by `since` itself (SyncEngine's own client-side
 * `updated_at > lastSyncAt` filter is what's under test in the differential
 * sync tests below) — `since` forwarding is asserted separately via the mock's
 * call arguments.
 */
export declare function createMockApiClient(config?: {
    offline?: boolean;
    healthStatus?: 'healthy' | 'degraded' | 'unhealthy';
    skills?: ApiSearchResult[];
    throwOnFetch?: Error;
}): SkillsmithApiClient;
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