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// Copyright 2018-2022 the oak authors. All rights reserved. MIT license.
// deno-lint-ignore-file
import { assert, assertEquals, assertStrictEquals } from "./test_deps.ts";import { errors } from "./deps.ts";import { createMockContext } from "./testing.ts";import { compose, Middleware } from "./middleware.ts";
const { test } = Deno;
test({  name: "test compose()",  async fn() {    const callStack: number[] = [];    const mockContext = createMockContext();    const mw1: Middleware = async (context, next) => {      assertStrictEquals(context, mockContext);      assertEquals(typeof next, "function");      callStack.push(1);      await next();    };    const mw2: Middleware = async (context, next) => {      assertStrictEquals(context, mockContext);      assertEquals(typeof next, "function");      callStack.push(2);      await next();    };    await compose([mw1, mw2])(mockContext);    assertEquals(callStack, [1, 2]);  },});
test({  name: "next() is catchable",  async fn() {    let caught: any;    const mw1: Middleware = async (ctx, next) => {      try {        await next();      } catch (err) {        caught = err;      }    };    const mw2: Middleware = async (ctx) => {      ctx.throw(500);    };    const context = createMockContext();    await compose([mw1, mw2])(context);    assert(caught instanceof errors.InternalServerError);  },});
test({  name: "composed middleware accepts next middleware",  async fn() {    const callStack: number[] = [];    const mockContext = createMockContext();
    const mw0: Middleware = async (context, next): Promise<void> => {      assertEquals(typeof next, "function");      callStack.push(3);      await next();    };
    const mw1: Middleware = async (context, next) => {      assertEquals(typeof next, "function");      callStack.push(1);      await next();    };    const mw2: Middleware = async (context, next) => {      assertEquals(typeof next, "function");      callStack.push(2);      await next();    };
    await compose([mw1, mw2])(mockContext, mw0 as () => Promise<void>);    assertEquals(callStack, [1, 2, 3]);  },});