Tauri IPC 請求

最常見的是，您希望攔截 IPC 請求; 這在各種情況下都很有用：

• 確保進行正確的后端調(diào)用
• 模擬后端函數(shù)的不同結(jié)果

Tauri 提供 mockIPC 函數(shù)來攔截 IPC 請求。 您可以 在此處詳細了解特定的 API。

以下示例使用 VITEST，但您可以使用任何其他前端測試庫，例如 JEST。

import { beforeAll, expect, test } from "vitest";
import { randomFillSync } from "crypto";

import { mockIPC } from "@tauri-apps/api/mocks";
import { invoke } from "@tauri-apps/api/tauri";

// jsdom doesn't come with a WebCrypto implementation
beforeAll(() => {
  Object.defineProperty(window, 'crypto', {
    value: {
      // @ts-ignore      
      getRandomValues: (buffer) => {
        return randomFillSync(buffer);
      },
    },
  });
});


test("invoke simple", async () => {
  mockIPC((cmd, args) => {
    // simulated rust command called "add" that just adds two numbers
    if(cmd === "add") {
      return (args.a as number) + (args.b as number);
    }
  });
});

有時您想跟蹤有關(guān) IPC 呼叫的更多信息; 調(diào)用了多少次命令？ 它被調(diào)用了嗎？ 您可以將 mockIPC() 與其他偵測和 mocking 工具來測試這一點：

import { beforeAll, expect, test, vi } from "vitest";
import { randomFillSync } from "crypto";

import { mockIPC } from "@tauri-apps/api/mocks";
import { invoke } from "@tauri-apps/api/tauri";

// jsdom doesn't come with a WebCrypto implementation
beforeAll(() => {
  Object.defineProperty(window, 'crypto', {
    value: {
      // @ts-ignore      
      getRandomValues: (buffer) => {
        return randomFillSync(buffer);
      },
    },
  });
});


test("invoke", async () => {
  mockIPC((cmd, args) => {
    // simulated rust command called "add" that just adds two numbers
    if(cmd === "add") {
      return (args.a as number) + (args.b as number);
    }
  });

  // we can use the spying tools provided by vitest to track the mocked function
  const spy = vi.spyOn(window, "__TAURI_IPC__");

  expect(invoke("add", { a: 12, b: 15 })).resolves.toBe(27);
  expect(spy).toHaveBeenCalled();
});

要模擬對 sidecar 或 shell 命令的 IPC 請求，當事件 spawn() 或 execute() 被調(diào)用時獲取處理程序的 ID，并使用此 ID 返回給后端：

mockIPC(async (cmd, args) => {
  if (args.message.cmd === 'execute') {
    const eventCallbackId = `_${args.message.onEventFn}`;
    const eventEmitter = window[eventCallbackId];

    // 'Stdout' event can be called multiple times
    eventEmitter({
      event: 'Stdout',
      payload: 'some data sent from the process',
    });

    // 'Terminated' event must be called at the end to resolve the promise
    eventEmitter({
      event: 'Terminated',
      payload: {
        code: 0,
        signal: 'kill',
      },
    });
  }
});