/**
 * HTTP test client.
 * Makes requests to a running @axiljsJS application in tests.
 * No need to start an actual server - tests against the app directly.
 *
 * Usage:
 *   const client = createTestClient(app)
 *
 *   const res = await client.get('/users')
 *   expect(res.status).toBe(200)
 *   expect(res.body.data).toHaveLength(1)
 */
import { Application } from '@axiljs/core';
export interface TestResponse {
    status: number;
    headers: Record<string, string | string[]>;
    body: any;
    text: string;
}
declare class TestRequest {
    private method;
    private path;
    private _headers;
    private _body;
    private _app;
    constructor(method: string, path: string, app: Application);
    /**
     * Set a request header.
     */
    set(name: string, value: string): this;
    /**
     * Set Authorization header with a Bearer token.
     */
    auth(token: string): this;
    /**
     * Set the request body.
     */
    send(body: unknown): this;
    /**
     * Make the request awaitable.
     * Allows: const res = await client.get('/users')
     */
    then(resolve: (res: TestResponse) => void, reject: (err: Error) => void): void;
    /**
     * Execute the request against the app.
     * Spins up a temporary server on a random port, makes the request, closes it.
     */
    private execute;
    /**
     * Make an HTTP request to the test server.
     */
    private makeRequest;
}
export declare class TestClient {
    private app;
    constructor(app: Application);
    get(path: string): TestRequest;
    post(path: string): TestRequest;
    put(path: string): TestRequest;
    patch(path: string): TestRequest;
    delete(path: string): TestRequest;
}
/**
 * Create a test client for an application.
 *
 * Usage:
 *   const client = createTestClient(app)
 *   const res = await client.get('/health')
 *   expect(res.status).toBe(200)
 */
export declare function createTestClient(app: Application): TestClient;
export {};
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