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react-package.test.ts
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react-package.test.ts
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import {
checkFilesDoNotExist,
checkFilesExist,
ensureProject,
forEachCli,
readJson,
runCLI,
uniq,
updateFile,
readFile,
} from '@nrwl/e2e/utils';
forEachCli('nx', (cli) => {
describe('Build React libraries and apps', () => {
/**
* Graph:
*
* childLib
* /
* app => parentLib =>
* \
* childLib2
*
*/
let app: string;
let parentLib: string;
let childLib: string;
let childLib2: string;
beforeEach(() => {
app = uniq('app');
parentLib = uniq('parentlib');
childLib = uniq('childlib');
childLib2 = uniq('childlib2');
ensureProject();
runCLI(`generate @nrwl/react:app ${app}`);
runCLI(
`generate @nrwl/react:library ${parentLib} --publishable --importPath=@proj/${parentLib} --no-interactive`
);
runCLI(
`generate @nrwl/react:library ${childLib} --publishable --importPath=@proj/${childLib} --no-interactive`
);
runCLI(
`generate @nrwl/react:library ${childLib2} --publishable --importPath=@proj/${childLib2} --no-interactive`
);
// create dependencies by importing
const createDep = (parent, children: string[]) => {
updateFile(
`libs/${parent}/src/lib/${parent}.tsx`,
`
${children.map((entry) => `import '@proj/${entry}';`).join('\n')}
`
);
};
createDep(parentLib, [childLib, childLib2]);
updateFile(
`apps/${app}/src/main.tsx`,
`
import "@proj/${parentLib}";
`
);
// we are setting paths to {} to make sure built libs are read from dist
updateFile('tsconfig.base.json', (c) => {
const json = JSON.parse(c);
json.compilerOptions.paths = {};
return JSON.stringify(json, null, 2);
});
// Add assets to child lib
updateFile(cli === 'angular' ? 'angular.json' : 'workspace.json', (c) => {
const json = JSON.parse(c);
json.projects[childLib].architect.build.options.assets = [
`libs/${childLib}/src/assets`,
];
return JSON.stringify(json, null, 2);
});
updateFile(`libs/${childLib}/src/assets/hello.txt`, 'Hello World!');
});
it('should throw an error if the dependent library has not been built before building the parent lib', () => {
expect.assertions(2);
try {
runCLI(`build ${parentLib}`);
} catch (e) {
expect(e.stderr.toString()).toContain(
`Some of the project ${parentLib}'s dependencies have not been built yet. Please build these libraries before:`
);
expect(e.stderr.toString()).toContain(`${childLib}`);
}
});
it('should preserve the tsconfig target set by user', () => {
// Setup
const myLib = uniq('my-lib');
runCLI(
`generate @nrwl/react:library ${myLib} --publishable --no-interactive`
);
/**
*
* Here I would update my library file
*
* updateFile(`libs/${myLib}/src/lib/${myLib}.tsx`, (content) => {
*
* Not sure how, will find how.
*
* })
*
* I would just add this in the end:
*
* export const TestFunction = async () => {
* return await Promise.resolve('Done!')
* }
*
*/
updateFile(`libs/${myLib}/tsconfig.json`, (content) => {
const json = JSON.parse(content);
/**
* Set target as es3!!
*/
json.compilerOptions.target = 'es3';
return JSON.stringify(json, null, 2);
});
// What we're testing
runCLI(`build ${myLib}`);
// Assertion
const content = readFile(`dist/libs/${myLib}/${myLib}.esm.js`);
/**
* Then check if the result contains this "promise" polyfill?
*/
expect(content).toContain('function __generator(thisArg, body) {');
});
it('should build the library when it does not have any deps', () => {
const output = runCLI(`build ${childLib}`);
expect(output).toContain(`${childLib}.esm.js`);
expect(output).toContain(`Bundle complete`);
checkFilesExist(`dist/libs/${childLib}/assets/hello.txt`);
});
it('should copy the README to dist', () => {
const output = runCLI(`build ${childLib2}`);
expect(output).toContain(`Bundle complete`);
checkFilesExist(`dist/libs/${childLib2}/README.md`);
});
it('should properly add references to any dependency into the parent package.json', () => {
const childLibOutput = runCLI(`build ${childLib}`);
const childLib2Output = runCLI(`build ${childLib2}`);
const parentLibOutput = runCLI(`build ${parentLib}`);
expect(childLibOutput).toContain(`${childLib}.esm.js`);
expect(childLibOutput).toContain(`${childLib}.umd.js`);
expect(childLibOutput).toContain(`Bundle complete`);
expect(childLib2Output).toContain(`${childLib2}.esm.js`);
expect(childLib2Output).toContain(`${childLib2}.umd.js`);
expect(childLib2Output).toContain(`Bundle complete`);
expect(parentLibOutput).toContain(`${parentLib}.esm.js`);
expect(parentLibOutput).toContain(`${parentLib}.umd.js`);
expect(parentLibOutput).toContain(`Bundle complete`);
const jsonFile = readJson(`dist/libs/${parentLib}/package.json`);
expect(jsonFile.dependencies).toEqual(
expect.objectContaining({
[`@proj/${childLib}`]: '0.0.1',
[`@proj/${childLib2}`]: '0.0.1',
react: expect.anything(),
})
);
});
it('should build an app composed out of buildable libs', () => {
const buildWithDeps = runCLI(`build ${app} --with-deps`);
expect(buildWithDeps).toContain(`Running target "build" succeeded`);
checkFilesDoNotExist(`apps/${app}/tsconfig/tsconfig.nx-tmp`);
// we remove all path mappings from the root tsconfig, so when trying to build
// libs from source, the builder will throw
const failedBuild = runCLI(
`build ${app} --with-deps --buildLibsFromSource`,
{ silenceError: true }
);
expect(failedBuild).toContain(`Can't resolve`);
}, 1000000);
});
});