I am writing test case using jest and react-testing-library When i run my test script it throws an error as below
TypeError: Cannot read property 'cwd' of undefined
Now I have tried almost everything to solve this but did not find cause of this
I tried to change config , Even I have run using --no-cache but again it throws the same error
here is my config file
const { defaults } = require("jest-config");
module.exports = {
testEnvironment: "node",
// setupFiles: [
// "<rootDir>/../apollo-server-env/dist/index.js"
// ],
preset: "ts-jest",
testMatch: null,
testRegex: ".*test*\\.(ts|tsx|js)$",
testPathIgnorePatterns: [
"/node_modules/",
"/dist/"
],
transform: {
"\\.(gql|graphql)$": "jest-transform-graphql",
"\\.(ts|tsx)$": "ts-jest",
// Use our custom transformer only for the *.js and *.jsx files
"\\.(js|jsx)?$": "./transform.js",
// future need to test with
// "^.+\\.(js|jsx|ts|tsx)$": "./transform.js",
// ".+\\.(css|styl|less|sass|scss)$": "jest-css-modules-transform"
},
roots: [
"packages",
"packages-modules",
"servers"
],
moduleFileExtensions: [...defaults.moduleFileExtensions,
"ts",
"tsx",
"js",
"gql",
"graphql"],
moduleNameMapper: {
'^__mocks__/(.*)$': '<rootDir>/../../__mocks__/$1',
// This regex should match the packages that we want compiled from source
// through `ts-jest`, as opposed to loaded from their output files in
// `dist`.
// We don't want to match `apollo-server-env` and
// `apollo-engine-reporting-protobuf`, because these don't depend on
// compilation but need to be initialized from as parto of `prepare`.
'^(?!apollo-server-env|apollo-engine-reporting-protobuf)(apollo-(?:server|datasource|cache-control|tracing|engine)[^/]*|graphql-extensions)(?:/dist)?((?:/.*)|$)': '<rootDir>/../../packages/$1/src$2'
},
transformIgnorePatterns: [
"/node_modules/(?!(@vscode)/).*/"
],
clearMocks: true,
globals: {
__BACKEND_URL__: 'http://localhost:3010',
__GRAPHQL_URL__: 'http://localhost:8085/graphql',
/*"ts-jest": {
tsConfig: "<rootDir>/tsconfig.json",
//https://github.com/kulshekhar/ts-jest/issues/766,
"diagnostics": {
"warnOnly": true
},
"babelConfig": true
}*/
}
};```
Here is my test file
`import * as React from 'react';
import {render, cleanup} from 'react-testing-library';
import {EditorComponent} from '../components/editor/editor-component';
import { Provider } from 'react-fela';
import { createRenderer } from 'fela';
import 'jest';
import 'jest-dom/extend-expect';
import { MockedProvider } from 'react-apollo/test-utils';
import {FILE_CONTENT_QUERY} from '../../../files-graphql-client/src/queries/index';
const mocks = [{
request: {
query : FILE_CONTENT_QUERY,
},
result: {
data: {
'getReleaseNotes': {},
},
},
}];
describe('<EditorComponent/>', () => {
let componentObj, felaRenderer, props = {
subscriber: jest.fn(),
saveDelayFileChangesMutation: jest.fn(),
loadFileContent: function () {
return new Promise(function(resolve) {
setTimeout(function() {
resolve({data: {loadFileContent: {
'loadFileContent': {},
}}});
}, 300);
});
},
openingFiles: [{
value : 'test',
encoding: 'utf-8',
oldValue : 'oldTest',
deleted : false,
addIgnore : 'test',
editorId : 1,
markdown: false,
preview : true,
preOpen : false,
keepOpen : true,
status : 'test',
oversize : false,
changed : true,
changedEvent: {},
diff : true,
size : 25,
}] as IContent[],
allSave: false,
rootPath: '',
change: jest.fn(),
actions: [],
doneSaveAll: jest.fn(),
changeEditorSubscribes: jest.fn(),
updateEditorContent: jest.fn(),
openDiffEditor: jest.fn(),
closeConflicts: jest.fn(),
closeEditor: jest.fn(),
updateChangedContent: jest.fn(),
setFinderOptions: jest.fn(),
onOpenFile: jest.fn(),
styles: {},
subscribeToMore: jest.fn(),
};
beforeEach(() => {
felaRenderer = createRenderer();
componentObj = render(<MockedProvider mocks={mocks}><Provider renderer={felaRenderer}><EditorComponent {...props}/></Provider></MockedProvider>);
});
afterEach(cleanup);
});`
Just install the older version of babel-jest: 22. No need to change the version of jest, latest version can be used. Latest version of babel-jest creates the problem
npm install --save-dev [email protected]
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