How do you configure tests with the Solito monorepo example?

[mikecfisher]

Thanks for making this great monorepo starter. I've been trying to configure jest tests and for the life of me I can't seem to get it working.

I would like to have some tests in packages/app but also some tests in apps/expo to verify they're working. When I configure jest in packages/app it works fine. However when I write tests in apps/expo that use the modules from packages/app it always fails with this error:

 FAIL  src/app.test.tsx
  ● Test suite failed to run

    Invariant Violation: __fbBatchedBridgeConfig is not set, cannot invoke native modules

      at invariant (../../node_modules/invariant/invariant.js:40:15)
      at Object.<anonymous> (../../packages/app/node_modules/react-native/Libraries/BatchedBridge/NativeModules.js:181:3)
      at Object.<anonymous> (../../packages/app/node_modules/react-native/Libraries/TurboModule/TurboModuleRegistry.js:11:23)

In the test if I write jest.mock('app", ()=>{}) the test passes just fine.

I'm assuming this is because jest isn't correctly transpiling the code from the other packages but after searching high and low I can't seem to find a solution for this.

Would love to see a solito example with jest testing configured.

Thanks!

[nandorojo]

Hey, I’m actually not sure, but this would be useful! Could you check the showtime repo maybe?

[nandorojo]

Hey, so I just set up Jest in a solito app pretty easily by following their docs.

I installed the jest dev dependencies in the root of the monorepo:

yarn add -D -W jest @types/jest # ..any others you use

And then I put a babel.config.js file in the root of the monorepo for jest:

module.exports = function (api) {
  api.cache(true)
  return {
    presets: [
      ['@babel/preset-env', { targets: { node: 'current' } }],
      '@babel/preset-typescript',
    ],
  }
}

And now it works with yarn jest.

[guplem]

It would be great if you could add a proper explanation in the documentation about how to set up jest with Solito (and easy examples). I have run into many issues. Alternatively, it would be great to have it included in some template

[nandorojo]

However when I write tests in apps/expo that use the modules from packages/app it always fails with this error:

Maybe you could try adding a module-resolver to your babel.config.js?

module.exports = function (api) {
  api.cache(true)
  return {
    presets: [
      ['@babel/preset-env', { targets: { node: 'current' } }],
      '@babel/preset-typescript',
    ],
  },
  "plugins": [
    ["module-resolver", {
      "root": ["./"],
      "alias": {
        "app/*": "./packages/app/*"
      }
    }]
  ]
}

[mikecfisher]

Thanks @nandorojo I did consider setting jest up at the root but what if you have an app that needs/wants a different jest config. Example preset: 'jest-expo', wouldn't be the right call in a React Web app.

Also I did mess with module resolver but not that exact pattern so let me give that a shot.

Thanks for looking at this!

[guplem]

I am not finding it straightforward to follow. After installing Solito (using the template with nativewind) I installed Zustand, and now I wanted to install Jest to do TDD.

I installed as dev dependencies in the package.json in the root:

    "@babel/core": "^7.20.2",
    "@babel/preset-env": "^7.20.2",
    "@babel/preset-typescript": "^7.18.6",
    "@types/jest": "^29.2.3",
    "babel-jest": "^29.3.1",
    "jest": "^29.3.1",

I also altered the "scripts" section of the file and added a "jest" section, so now it looks like this:

"jest": {
  "transformIgnorePatterns": [
    "<rootDir>/node_modules/(?!((jest-)?react-native|@react-native(-community)?)|expo(nent)?|@expo(nent)?/.*|@expo-google-fonts/.*|react-navigation|@react-navigation/.*|@unimodules/.*|unimodules|sentry-expo|native-base|react-native-svg|moti|solito)"
  ],
  "collectCoverage": true,
  "collectCoverageFrom": [
    "**/*.{js,jsx}",
    "!**/coverage/**",
    "!**/node_modules/**",
    "!**/babel.config.js",
    "!**/jest.setup.js"
  ]
},
"scripts": {
  "native": "cd apps/expo && expo start",
  "web": "cd apps/next && yarn next",
  "test": "jest --watch --coverage=true --changedSince=origin/main",
  "testDebug": "jest -o --watch --coverage=false",
  "testFinal": "jest",
  "updateSnapshots": "jest -u --coverage=false"
}

Additionally, I have added the babel.config.js file in the root as well with the following contents:

module.exports = function (api) {
    api.cache(true)
    return {
      presets: [
        ['@babel/preset-env', { targets: { node: 'current' } }],
        '@babel/preset-typescript',
      ],
    }
  }

And I created this simple test to check if things were working:

import React from 'react';
import renderer from 'react-test-renderer';
import { HomeScreen } from '../screen'
describe('Home screen', () => {
  it('has 1 child', () => {
    const tree = renderer.create(<HomeScreen />).toJSON()
    expect(tree.children.length).toBe(1)
  })
})

Then I run the test with npm run testFinal and I get the following error:

 FAIL  packages/app/features/home/__tests__/home.screen.test.js
  ● Test suite failed to run

    Jest encountered an unexpected token

    Jest failed to parse a file. This happens e.g. when your code or its dependencies use non-standard JavaScript syntax, or when Jest is not configured to support such syntax.

    Out of the box Jest supports Babel, which will be used to transform your files into valid JS based on your Babel configuration.

    By default "node_modules" folder is ignored by transformers.

    Here's what you can do:
     • If you are trying to use ECMAScript Modules, see https://jestjs.io/docs/ecmascript-modules for how to enable it.
     • If you are trying to use TypeScript, see https://jestjs.io/docs/getting-started#using-typescript
     • To have some of your "node_modules" files transformed, you can specify a custom "transformIgnorePatterns" in your config.
     • If you need a custom transformation specify a "transform" option in your config.
     • If you simply want to mock your non-JS modules (e.g. binary assets) you can stub them out with the "moduleNameMapper" config option.

    You'll find more details and examples of these config options in the docs:
    https://jestjs.io/docs/configuration
    For information about custom transformations, see:
    https://jestjs.io/docs/code-transformation

    Details:

    SyntaxError: K:\GitHub\TunzaaMarketplace\tunzaa-marketplace\packages\app\features\home\__tests__\home.screen.test.js: Support for the experimental syntax 'jsx' isn't currently enabled (6:34):

      4 | describe('Home screen', () => {
      5 |   it('has 1 child', () => {
    > 6 |     const tree = renderer.create(<HomeScreen />).toJSON()
        |                                  ^
      7 |     expect(tree.children.length).toBe(1)
      8 |   })
      9 | })

    Add @babel/preset-react (https://github.com/babel/babel/tree/main/packages/babel-preset-react) to the 'presets' section of your Babel config to enable transformation.
    If you want to leave it as-is, add @babel/plugin-syntax-jsx (https://github.com/babel/babel/tree/main/packages/babel-plugin-syntax-jsx) to the 'plugins' section to enable parsing.

      at instantiate (node_modules/@babel/core/node_modules/@babel/parser/src/parse-error/credentials.ts:62:21)
      at instantiate (node_modules/@babel/core/node_modules/@babel/parser/src/parse-error.ts:60:12)
      at Parser.toParseError [as raise] (node_modules/@babel/core/node_modules/@babel/parser/src/tokenizer/index.ts:1474:19)
      at Parser.raise [as expectOnePlugin] (node_modules/@babel/core/node_modules/@babel/parser/src/tokenizer/index.ts:1539:18)
      at Parser.expectOnePlugin [as parseExprAtom] (node_modules/@babel/core/node_modules/@babel/parser/src/parser/expression.ts:1278:16)       
      at Parser.parseExprAtom [as parseExprSubscripts] (node_modules/@babel/core/node_modules/@babel/parser/src/parser/expression.ts:722:23)    
      at Parser.parseExprSubscripts [as parseUpdate] (node_modules/@babel/core/node_modules/@babel/parser/src/parser/expression.ts:699:21)      
      at Parser.parseUpdate [as parseMaybeUnary] (node_modules/@babel/core/node_modules/@babel/parser/src/parser/expression.ts:661:23)
      at Parser.parseMaybeUnary [as parseMaybeUnaryOrPrivate] (node_modules/@babel/core/node_modules/@babel/parser/src/parser/expression.ts:399:14)
      at Parser.parseMaybeUnaryOrPrivate [as parseExprOps] (node_modules/@babel/core/node_modules/@babel/parser/src/parser/expression.ts:411:23)
      at Parser.parseExprOps [as parseMaybeConditional] (node_modules/@babel/core/node_modules/@babel/parser/src/parser/expression.ts:366:23)   
      at Parser.parseMaybeConditional [as parseMaybeAssign] (node_modules/@babel/core/node_modules/@babel/parser/src/parser/expression.ts:306:21)
      at parseMaybeAssign (node_modules/@babel/core/node_modules/@babel/parser/src/parser/expression.ts:260:12)
      at Parser.callback [as allowInAnd] (node_modules/@babel/core/node_modules/@babel/parser/src/parser/expression.ts:3090:12)
      at Parser.allowInAnd [as parseMaybeAssignAllowIn] (node_modules/@babel/core/node_modules/@babel/parser/src/parser/expression.ts:259:17)   
      at Parser.parseMaybeAssignAllowIn [as parseExprListItem] (node_modules/@babel/core/node_modules/@babel/parser/src/parser/expression.ts:2726:18)
      at Parser.parseExprListItem [as parseCallExpressionArguments] (node_modules/@babel/core/node_modules/@babel/parser/src/parser/expression.ts:1043:14)
      at Parser.parseCallExpressionArguments [as parseCoverCallAndAsyncArrowHead] (node_modules/@babel/core/node_modules/@babel/parser/src/parser/expression.ts:893:29)
      at Parser.parseCoverCallAndAsyncArrowHead [as parseSubscript] (node_modules/@babel/core/node_modules/@babel/parser/src/parser/expression.ts:782:19)
      at Parser.parseSubscript [as parseSubscripts] (node_modules/@babel/core/node_modules/@babel/parser/src/parser/expression.ts:743:19)       
      at Parser.parseSubscripts [as parseExprSubscripts] (node_modules/@babel/core/node_modules/@babel/parser/src/parser/expression.ts:728:17)  
      at Parser.parseExprSubscripts [as parseUpdate] (node_modules/@babel/core/node_modules/@babel/parser/src/parser/expression.ts:699:21)      
      at Parser.parseUpdate [as parseMaybeUnary] (node_modules/@babel/core/node_modules/@babel/parser/src/parser/expression.ts:661:23)
      at Parser.parseMaybeUnary [as parseMaybeUnaryOrPrivate] (node_modules/@babel/core/node_modules/@babel/parser/src/parser/expression.ts:399:14)
      at Parser.parseMaybeUnaryOrPrivate [as parseExprOps] (node_modules/@babel/core/node_modules/@babel/parser/src/parser/expression.ts:411:23)
      at Parser.parseExprOps [as parseMaybeConditional] (node_modules/@babel/core/node_modules/@babel/parser/src/parser/expression.ts:366:23)   
      at Parser.parseMaybeConditional [as parseMaybeAssign] (node_modules/@babel/core/node_modules/@babel/parser/src/parser/expression.ts:306:21)
      at parseMaybeAssign (node_modules/@babel/core/node_modules/@babel/parser/src/parser/expression.ts:260:12)
      at Parser.callback [as allowInAnd] (node_modules/@babel/core/node_modules/@babel/parser/src/parser/expression.ts:3085:16)
      at Parser.allowInAnd [as parseMaybeAssignAllowIn] (node_modules/@babel/core/node_modules/@babel/parser/src/parser/expression.ts:259:17)   
      at Parser.parseMaybeAssignAllowIn [as parseVar] (node_modules/@babel/core/node_modules/@babel/parser/src/parser/statement.ts:1387:16)     
      at Parser.parseVar [as parseVarStatement] (node_modules/@babel/core/node_modules/@babel/parser/src/parser/statement.ts:1049:10)
      at Parser.parseVarStatement [as parseStatementContent] (node_modules/@babel/core/node_modules/@babel/parser/src/parser/statement.ts:449:21)
      at Parser.parseStatementContent [as parseStatement] (node_modules/@babel/core/node_modules/@babel/parser/src/parser/statement.ts:359:17)  
      at Parser.parseStatement [as parseBlockOrModuleBlockBody] (node_modules/@babel/core/node_modules/@babel/parser/src/parser/statement.ts:1241:25)
      at Parser.parseBlockOrModuleBlockBody [as parseBlockBody] (node_modules/@babel/core/node_modules/@babel/parser/src/parser/statement.ts:1216:10)
      at Parser.parseBlockBody [as parseBlock] (node_modules/@babel/core/node_modules/@babel/parser/src/parser/statement.ts:1184:10)
      at Parser.parseBlock [as parseFunctionBody] (node_modules/@babel/core/node_modules/@babel/parser/src/parser/expression.ts:2564:24)        
      at Parser.parseFunctionBody [as parseArrowExpression] (node_modules/@babel/core/node_modules/@babel/parser/src/parser/expression.ts:2507:10)
      at Parser.parseArrowExpression [as parseParenAndDistinguishExpression] (node_modules/@babel/core/node_modules/@babel/parser/src/parser/expression.ts:1801:12)
      at Parser.parseParenAndDistinguishExpression [as parseExprAtom] (node_modules/@babel/core/node_modules/@babel/parser/src/parser/expression.ts:1162:21)
      at Parser.parseExprAtom [as parseExprSubscripts] (node_modules/@babel/core/node_modules/@babel/parser/src/parser/expression.ts:722:23)    
      at Parser.parseExprSubscripts [as parseUpdate] (node_modules/@babel/core/node_modules/@babel/parser/src/parser/expression.ts:699:21)      
      at Parser.parseUpdate [as parseMaybeUnary] (node_modules/@babel/core/node_modules/@babel/parser/src/parser/expression.ts:661:23)
      at Parser.parseMaybeUnary [as parseMaybeUnaryOrPrivate] (node_modules/@babel/core/node_modules/@babel/parser/src/parser/expression.ts:399:14)
      at Parser.parseMaybeUnaryOrPrivate [as parseExprOps] (node_modules/@babel/core/node_modules/@babel/parser/src/parser/expression.ts:411:23)
      at Parser.parseExprOps [as parseMaybeConditional] (node_modules/@babel/core/node_modules/@babel/parser/src/parser/expression.ts:366:23)   
      at Parser.parseMaybeConditional [as parseMaybeAssign] (node_modules/@babel/core/node_modules/@babel/parser/src/parser/expression.ts:306:21)
      at parseMaybeAssign (node_modules/@babel/core/node_modules/@babel/parser/src/parser/expression.ts:260:12)
      at Parser.callback [as allowInAnd] (node_modules/@babel/core/node_modules/@babel/parser/src/parser/expression.ts:3090:12)
      at Parser.allowInAnd [as parseMaybeAssignAllowIn] (node_modules/@babel/core/node_modules/@babel/parser/src/parser/expression.ts:259:17)   
      at Parser.parseMaybeAssignAllowIn [as parseExprListItem] (node_modules/@babel/core/node_modules/@babel/parser/src/parser/expression.ts:2726:18)
      at Parser.parseExprListItem [as parseCallExpressionArguments] (node_modules/@babel/core/node_modules/@babel/parser/src/parser/expression.ts:1043:14)
      at Parser.parseCallExpressionArguments [as parseCoverCallAndAsyncArrowHead] (node_modules/@babel/core/node_modules/@babel/parser/src/parser/expression.ts:893:29)
      at Parser.parseCoverCallAndAsyncArrowHead [as parseSubscript] (node_modules/@babel/core/node_modules/@babel/parser/src/parser/expression.ts:782:19)
      at Parser.parseSubscript [as parseSubscripts] (node_modules/@babel/core/node_modules/@babel/parser/src/parser/expression.ts:743:19)       
      at Parser.parseSubscripts [as parseExprSubscripts] (node_modules/@babel/core/node_modules/@babel/parser/src/parser/expression.ts:728:17)  
      at Parser.parseExprSubscripts [as parseUpdate] (node_modules/@babel/core/node_modules/@babel/parser/src/parser/expression.ts:699:21)      
      at Parser.parseUpdate [as parseMaybeUnary] (node_modules/@babel/core/node_modules/@babel/parser/src/parser/expression.ts:661:23)
      at Parser.parseMaybeUnary [as parseMaybeUnaryOrPrivate] (node_modules/@babel/core/node_modules/@babel/parser/src/parser/expression.ts:399:14)
      at Parser.parseMaybeUnaryOrPrivate [as parseExprOps] (node_modules/@babel/core/node_modules/@babel/parser/src/parser/expression.ts:411:23)
      at Parser.parseExprOps [as parseMaybeConditional] (node_modules/@babel/core/node_modules/@babel/parser/src/parser/expression.ts:366:23)   
      at Parser.parseMaybeConditional [as parseMaybeAssign] (node_modules/@babel/core/node_modules/@babel/parser/src/parser/expression.ts:306:21)
      at Parser.parseMaybeAssign [as parseExpressionBase] (node_modules/@babel/core/node_modules/@babel/parser/src/parser/expression.ts:229:23) 
      at parseExpressionBase (node_modules/@babel/core/node_modules/@babel/parser/src/parser/expression.ts:220:39)
      at Parser.callback [as allowInAnd] (node_modules/@babel/core/node_modules/@babel/parser/src/parser/expression.ts:3085:16)
      at Parser.allowInAnd [as parseExpression] (node_modules/@babel/core/node_modules/@babel/parser/src/parser/expression.ts:220:17)
      at Parser.parseExpression [as parseStatementContent] (node_modules/@babel/core/node_modules/@babel/parser/src/parser/statement.ts:540:23) 
      at Parser.parseStatementContent [as parseStatement] (node_modules/@babel/core/node_modules/@babel/parser/src/parser/statement.ts:359:17)  
      at Parser.parseStatement [as parseBlockOrModuleBlockBody] (node_modules/@babel/core/node_modules/@babel/parser/src/parser/statement.ts:1241:25)
      at Parser.parseBlockOrModuleBlockBody [as parseBlockBody] (node_modules/@babel/core/node_modules/@babel/parser/src/parser/statement.ts:1216:10)
      at Parser.parseBlockBody [as parseBlock] (node_modules/@babel/core/node_modules/@babel/parser/src/parser/statement.ts:1184:10)
      at Parser.parseBlock [as parseFunctionBody] (node_modules/@babel/core/node_modules/@babel/parser/src/parser/expression.ts:2564:24)        
      at Parser.parseFunctionBody [as parseArrowExpression] (node_modules/@babel/core/node_modules/@babel/parser/src/parser/expression.ts:2507:10)
      at Parser.parseArrowExpression [as parseParenAndDistinguishExpression] (node_modules/@babel/core/node_modules/@babel/parser/src/parser/expression.ts:1801:12)
      at Parser.parseParenAndDistinguishExpression [as parseExprAtom] (node_modules/@babel/core/node_modules/@babel/parser/src/parser/expression.ts:1162:21)
      at Parser.parseExprAtom [as parseExprSubscripts] (node_modules/@babel/core/node_modules/@babel/parser/src/parser/expression.ts:722:23)    
      at Parser.parseExprSubscripts [as parseUpdate] (node_modules/@babel/core/node_modules/@babel/parser/src/parser/expression.ts:699:21)      
      at Parser.parseUpdate [as parseMaybeUnary] (node_modules/@babel/core/node_modules/@babel/parser/src/parser/expression.ts:661:23)
      at Parser.parseMaybeUnary [as parseMaybeUnaryOrPrivate] (node_modules/@babel/core/node_modules/@babel/parser/src/parser/expression.ts:399:14)
      at Parser.parseMaybeUnaryOrPrivate [as parseExprOps] (node_modules/@babel/core/node_modules/@babel/parser/src/parser/expression.ts:411:23)
      at Parser.parseExprOps [as parseMaybeConditional] (node_modules/@babel/core/node_modules/@babel/parser/src/parser/expression.ts:366:23)   
      at Parser.parseMaybeConditional [as parseMaybeAssign] (node_modules/@babel/core/node_modules/@babel/parser/src/parser/expression.ts:306:21)
      at parseMaybeAssign (node_modules/@babel/core/node_modules/@babel/parser/src/parser/expression.ts:260:12)
      at Parser.callback [as allowInAnd] (node_modules/@babel/core/node_modules/@babel/parser/src/parser/expression.ts:3090:12)
      at Parser.allowInAnd [as parseMaybeAssignAllowIn] (node_modules/@babel/core/node_modules/@babel/parser/src/parser/expression.ts:259:17)   
      at Parser.parseMaybeAssignAllowIn [as parseExprListItem] (node_modules/@babel/core/node_modules/@babel/parser/src/parser/expression.ts:2726:18)
      at Parser.parseExprListItem [as parseCallExpressionArguments] (node_modules/@babel/core/node_modules/@babel/parser/src/parser/expression.ts:1043:14)
      at Parser.parseCallExpressionArguments [as parseCoverCallAndAsyncArrowHead] (node_modules/@babel/core/node_modules/@babel/parser/src/parser/expression.ts:893:29)
      at Parser.parseCoverCallAndAsyncArrowHead [as parseSubscript] (node_modules/@babel/core/node_modules/@babel/parser/src/parser/expression.ts:782:19)
      at Parser.parseSubscript [as parseSubscripts] (node_modules/@babel/core/node_modules/@babel/parser/src/parser/expression.ts:743:19)       
      at Parser.parseSubscripts [as parseExprSubscripts] (node_modules/@babel/core/node_modules/@babel/parser/src/parser/expression.ts:728:17)  
      at Parser.parseExprSubscripts [as parseUpdate] (node_modules/@babel/core/node_modules/@babel/parser/src/parser/expression.ts:699:21)      
      at Parser.parseUpdate [as parseMaybeUnary] (node_modules/@babel/core/node_modules/@babel/parser/src/parser/expression.ts:661:23)
      at Parser.parseMaybeUnary [as parseMaybeUnaryOrPrivate] (node_modules/@babel/core/node_modules/@babel/parser/src/parser/expression.ts:399:14)
      at Parser.parseMaybeUnaryOrPrivate [as parseExprOps] (node_modules/@babel/core/node_modules/@babel/parser/src/parser/expression.ts:411:23)
      at Parser.parseExprOps [as parseMaybeConditional] (node_modules/@babel/core/node_modules/@babel/parser/src/parser/expression.ts:366:23)   
      at Parser.parseMaybeConditional [as parseMaybeAssign] (node_modules/@babel/core/node_modules/@babel/parser/src/parser/expression.ts:306:21)
      at Parser.parseMaybeAssign [as parseExpressionBase] (node_modules/@babel/core/node_modules/@babel/parser/src/parser/expression.ts:229:23) 
      at parseExpressionBase (node_modules/@babel/core/node_modules/@babel/parser/src/parser/expression.ts:220:39)

I have also tried following Expo's official documentation (which didn't work straight away either, I had to modify many things) and I got it to a point where it looked like it is working. But I am missing something because I get an error that I can't figure out from where it comes from :
TypeError: Cannot read properties of null (reading 'match')

The test that I am running seems very straightforward to me…

describe('Home screen', () => {
  it('has 1 child', () => {
    expect(true).toBe(true);
  })
})

[Puneet56]

@mikefisher84 @guplem, Hi, did you find any working solution. I am also struggling to set up testing in a solito monorepo but no luck.

[guplem]

We did not and we ended up deciding to switch to flutter since solito/RN related issues were taking so much of our time ...

[Mansigupta-Playleap]

@mikefisher84 @guplem, Hi, did you find any working solution. I am also struggling to set up testing in a solito monorepo but no luck.
did u find any solution?

[guplem]

Sadly no ...