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/* eslint-disable no-console */
import '@testing-library/jest-dom' // jest custom assertions
import '@vanilla-extract/css/disableRuntimeStyles' // https://vanilla-extract.style/documentation/test-environments/#disabling-runtime-styles
import 'jest-styled-components' // adds style diffs to snapshot tests
import 'polyfills' // add polyfills
import { setupi18n } from 'uniswap/src/i18n/i18n-setup-interface'
import 'utilities/src/logger/mocks'
import type { createPopper } from '@popperjs/core'
import { useWeb3React } from '@web3-react/core'
import failOnConsole from 'jest-fail-on-console'
import { disableNetConnect, restore as restoreNetConnect } from 'nock'
import React from 'react'
import { Readable } from 'stream'
import { toBeVisible } from 'test-utils/matchers'
import { mocked } from 'test-utils/mocked'
import { useFeatureFlag } from 'uniswap/src/features/gating/hooks'
import { mockLocalizationContext } from 'uniswap/src/test/mocks/locale'
import { TextDecoder, TextEncoder } from 'util'
setupi18n()
// Sets origin to the production origin, because some tests depend on this.
// This prevents each test file from needing to set this manually.
globalThis.origin = 'https://app.uniswap.org'
// Polyfill browser APIs (jest is a node.js environment):
{
window.open = jest.fn()
window.getComputedStyle = jest.fn()
if (typeof globalThis.TextEncoder === 'undefined') {
globalThis.ReadableStream = Readable as unknown as typeof globalThis.ReadableStream
globalThis.TextEncoder = TextEncoder
globalThis.TextDecoder = TextDecoder as typeof globalThis.TextDecoder
}
globalThis.matchMedia =
globalThis.matchMedia ||
((query) => {
const reducedMotion = query.match(/prefers-reduced-motion: ([a-zA-Z0-9-]+)/)
return {
// Needed for reanimated to disable reduced motion warning in tests
matches: reducedMotion ? reducedMotion[1] === 'no-preference' : false,
addListener: jest.fn(),
addEventListener: jest.fn(),
removeEventListener: jest.fn(),
}
})
globalThis.performance.measure = jest.fn()
globalThis.performance.mark = jest.fn()
globalThis.React = React
}
jest.mock('react-native-svg', () => require('@tamagui/react-native-svg'))
jest.mock('@popperjs/core', () => {
const core = jest.requireActual('@popperjs/core')
return {
...core,
createPopper: (...args: Parameters<typeof createPopper>) => {
const [referenceElement, popperElement, options = {}] = args
// Prevent popper from making state updates asynchronously.
// This is necessary to avoid warnings during tests, as popper will asynchronously update state outside of test setup.
options?.modifiers?.push({
name: 'synchronousUpdate',
enabled: true,
phase: 'beforeMain',
effect: (state) => {
state.instance.update = () => {
state.instance.forceUpdate()
return Promise.resolve(state.instance.state)
}
},
})
return core.createPopper(referenceElement, popperElement, options)
},
}
})
jest.mock('uniswap/src/features/language/LocalizationContext', () => mockLocalizationContext({}))
jest.mock('@web3-react/core', () => {
const web3React = jest.requireActual('@web3-react/core')
const { Empty } = jest.requireActual('@web3-react/empty')
return {
...web3React,
initializeConnector: () =>
web3React.initializeConnector(
(actions: Parameters<typeof web3React.initializeConnector>[0]) => new Empty(actions),
),
useWeb3React: jest.fn(),
}
})
jest.mock('state/routing/slice', () => {
const routingSlice = jest.requireActual('state/routing/slice')
return {
...routingSlice,
// Prevents unit tests from logging errors from failed getQuote queries
useGetQuoteQuery: () => ({
isError: false,
data: undefined,
error: undefined,
currentData: undefined,
}),
}
})
jest.mock('state/routing/quickRouteSlice', () => {
const quickRouteSlice = jest.requireActual('state/routing/quickRouteSlice')
return {
...quickRouteSlice,
// Prevents unit tests from logging errors from failed getQuote queries
useGetQuickRouteQuery: () => ({
isError: false,
data: undefined,
error: undefined,
currentData: undefined,
}),
}
})
/**
* Fail tests if anything is logged to the console. This keeps the console clean and ensures test output stays readable.
* If something should log to the console, it should be stubbed and asserted:
* @example
* beforeEach(() => jest.spyOn(console, 'error').mockReturnsValue())
* it('should log an error', () => {
* example()
* expect(console.error).toHaveBeenCalledWith(expect.any(Error))
* })
*/
failOnConsole({
shouldFailOnAssert: true,
shouldFailOnDebug: true,
shouldFailOnError: true,
shouldFailOnInfo: true,
shouldFailOnLog: true,
shouldFailOnWarn: true,
allowMessage: (message, type) => {
if (type === 'error') {
// TODO(TAM-47): remove this allowed warning once Tamagui is upgraded >= 1.100
if (message.startsWith('[moti]: Invalid transform value.')) {
return true
}
}
return false
},
})
jest.mock('uniswap/src/features/gating/hooks')
const originalConsoleDebug = console.debug
// Mocks are configured to reset between tests (by CRA), so they must be set in a beforeEach.
beforeEach(() => {
// Mock window.getComputedStyle, because it is otherwise too computationally expensive to unit test.
// Not mocking this results in multi-second tests when using popper.js.
mocked(window.getComputedStyle).mockImplementation(() => new CSSStyleDeclaration())
// Mock useWeb3React to return a chainId of 1 by default.
mocked(useWeb3React).mockReturnValue({ chainId: 1 } as ReturnType<typeof useWeb3React>)
// Disable network connections by default.
disableNetConnect()
// Mock feature flags
mocked(useFeatureFlag).mockReturnValue(false)
// Prevent amplitude debugs from triggering failOnConsole
console.debug = jest.fn((...args) => {
if (typeof args[0] === 'string' && args[0].includes('[amplitude(Identify)')) {
return
}
originalConsoleDebug(...args)
})
})
afterEach(() => {
// Without this, nock causes a memory leak and the tests will fail on CI.
// https://github.com/nock/nock/issues/1817
restoreNetConnect()
})
expect.extend({
toBeVisible,
})