import type { Application } from '@atlex/core';
/**
 * In-memory storage fake with assertion helpers.
 */
export declare class StorageFake {
    private readonly driver;
    private constructor();
    /**
     * Replace a disk with an isolated memory driver.
     *
     * @param app - Application with `storage` bound.
     * @param disk - Disk name (default disk when omitted).
     * @returns Fake for assertions.
     */
    static fake(app: Application, disk?: string): StorageFake;
    /**
     * Assert a file exists on the fake disk.
     *
     * @param path - Relative path.
     */
    assertExists(path: string): Promise<void>;
    /**
     * Assert a file is missing.
     *
     * @param path - Relative path.
     */
    assertMissing(path: string): Promise<void>;
    /**
     * Assert file count under a directory prefix (non-recursive file list).
     *
     * @param directory - Directory prefix.
     * @param count - Expected count from {@link MemoryDriver.files}.
     */
    assertCount(directory: string, count: number): Promise<void>;
    /**
     * Assert total stored file keys (all prefixes).
     *
     * @param count - Expected number of files.
     */
    assertTotalCount(count: number): Promise<void>;
    /**
     * Assert a directory exists (has child entries or explicit empty dir).
     *
     * @param path - Directory path.
     */
    assertDirectoryExists(path: string): Promise<void>;
    /**
     * Assert no files exist under a directory prefix.
     *
     * @param path - Directory path.
     */
    assertDirectoryMissing(path: string): Promise<void>;
    /**
     * All stored paths.
     *
     * @returns Relative paths.
     */
    allFiles(): Promise<string[]>;
    /**
     * Clear memory driver contents.
     */
    flush(): Promise<void>;
}
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