mocks

Functions

clearMocks()

function clearMocks(): void

Clears mocked functions/data injected by the other functions in this module. When using a test runner that doesn’t provide a fresh window object for each test, calling this function will reset tauri specific properties.

Example

import { mockWindows, clearMocks } from "@tauri-apps/api/mocks"

afterEach(() => {
   clearMocks()
})

test("mocked windows", () => {
   mockWindows("main", "second", "third");

   expect(window.__TAURI_INTERNALS__).toHaveProperty("metadata")
})

test("no mocked windows", () => {
   expect(window.__TAURI_INTERNALS__).not.toHaveProperty("metadata")
})

Returns

void

Since

1.0.0

Source: https://github.com/tauri-apps/tauri/blob/dev/packages/api/src/mocks.ts#L211

---

mockConvertFileSrc()

function mockConvertFileSrc(osName): void

Mock convertFileSrc function

Parameters

Parameter	Type	Description
osName	string	The operating system to mock, can be one of linux, macos, or windows

Returns

void

Example

import { mockConvertFileSrc } from "@tauri-apps/api/mocks";
import { convertFileSrc } from "@tauri-apps/api/core";

mockConvertFileSrc("windows")

const url = convertFileSrc("C:\\Users\\user\\file.txt")

Since

1.6.0

Source: https://github.com/tauri-apps/tauri/blob/dev/packages/api/src/mocks.ts#L172

---

mockIPC()

function mockIPC(cb): void

Intercepts all IPC requests with the given mock handler.

This function can be used when testing tauri frontend applications or when running the frontend in a Node.js context during static site generation.

Examples

Testing setup using vitest:

import { mockIPC, clearMocks } from "@tauri-apps/api/mocks"
import { invoke } from "@tauri-apps/api/core"

afterEach(() => {
   clearMocks()
})

test("mocked command", () => {
 mockIPC((cmd, payload) => {
  switch (cmd) {
    case "add":
      return (payload.a as number) + (payload.b as number);
    default:
      break;
    }
 });

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

The callback function can also return a Promise:

import { mockIPC, clearMocks } from "@tauri-apps/api/mocks"
import { invoke } from "@tauri-apps/api/core"

afterEach(() => {
   clearMocks()
})

test("mocked command", () => {
 mockIPC((cmd, payload) => {
  if(cmd === "get_data") {
   return fetch("https://example.com/data.json")
     .then((response) => response.json())
  }
 });

 expect(invoke('get_data')).resolves.toBe({ foo: 'bar' });
})

Parameters

Parameter	Type
cb	(cmd, payload?) => unknown

Returns

void

Since

1.0.0

Source: https://github.com/tauri-apps/tauri/blob/dev/packages/api/src/mocks.ts#L64

---

mockWindows()

function mockWindows(current, ..._additionalWindows): void

Mocks one or many window labels. In non-tauri context it is required to call this function before using the @tauri-apps/api/window module.

This function only mocks the presence of windows, window properties (e.g. width and height) can be mocked like regular IPC calls using the mockIPC function.

Examples

import { mockWindows } from "@tauri-apps/api/mocks";
import { getCurrentWindow } from "@tauri-apps/api/window";

mockWindows("main", "second", "third");

const win = getCurrentWindow();

win.label // "main"

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

mockWindows("main", "second", "third");

mockIPC((cmd, args) => {
 if (cmd === "plugin:event|emit") {
   console.log('emit event', args?.event, args?.payload);
 }
});

const { emit } = await import("@tauri-apps/api/event");
await emit('loaded'); // this will cause the mocked IPC handler to log to the console.

Parameters

Parameter	Type	Description
current	string	Label of window this JavaScript context is running in.
…_additionalWindows	string[]	-

Returns

void

Since

1.0.0

Source: https://github.com/tauri-apps/tauri/blob/dev/packages/api/src/mocks.ts#L143