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[test] Improve typescript-to-proptypes test suite #25209

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Mar 6, 2021
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80 changes: 0 additions & 80 deletions packages/typescript-to-proptypes/test/index.test.ts

This file was deleted.

103 changes: 103 additions & 0 deletions packages/typescript-to-proptypes/test/typescript-to-proptypes.test.ts
Original file line number Diff line number Diff line change
@@ -0,0 +1,103 @@
import path from 'path';
import fs from 'fs';
import { expect } from 'chai';
import glob from 'fast-glob';
import prettier from 'prettier';
import * as ttp from '../src';
import { TestOptions } from './types';

const testCases = glob
.sync('**/input.{d.ts,ts,tsx}', { absolute: true, cwd: __dirname })
.map((testPath) => {
const dirname = path.dirname(testPath);
const name = path.dirname(path.relative(__dirname, testPath));
const outputPath = path.join(dirname, 'output.js');
const inputJS = path.join(dirname, 'input.js');

return {
inputJS,
name,
outputPath,
inputPath: testPath,
};
});

describe('typescript-to-proptypes', () => {
let cachedProgram: ttp.ts.Program;
function getProgram() {
return cachedProgram;
}

before(() => {
// Create program for all files to speed up tests
cachedProgram = ttp.createTSProgram(
testCases.map((testCase) => testCase.inputPath),
ttp.loadConfig(path.resolve(__dirname, '../tsconfig.json')),
);
});

testCases.forEach((testCase) => {
const { name: testName, inputPath, inputJS, outputPath } = testCase;

it(testName, async () => {
const program = getProgram();
let options: TestOptions = {};
try {
const optionsModule = await import(`./${testName}/options`);
options = optionsModule.default;
} catch (error) {
// Assume "Cannot find module" which means "no options".
}

const ast = ttp.parseFromProgram(inputPath, program, options.parser);

let inputSource = null;
if (inputPath.endsWith('.d.ts')) {
try {
inputSource = fs.readFileSync(inputJS, 'utf8');
} catch (error) {
// ignore
}
} else {
inputSource = ttp.ts.transpileModule(fs.readFileSync(inputPath, 'utf8'), {
compilerOptions: {
target: ttp.ts.ScriptTarget.ESNext,
jsx: ttp.ts.JsxEmit.Preserve,
},
}).outputText;
}

let result = '';
// For d.ts files we just generate the AST
if (!inputSource) {
result = ast.body
.map((component) => {
return ttp.generate(component, options.generator);
})
.join('\n');
} else {
// For .tsx? files we transpile them and inject the proptypes
const injected = ttp.inject(ast, inputSource, options.injector);
if (!injected) {
throw new Error('Injection failed');
}

result = injected;
}

const prettierConfig = prettier.resolveConfig.sync(outputPath);
const propTypes = prettier.format(result, {
...prettierConfig,
filepath: outputPath,
});

if (fs.existsSync(outputPath)) {
expect(propTypes.replace(/\r?\n/g, '\n')).to.include(
fs.readFileSync(outputPath, 'utf8').replace(/\r?\n/g, '\n'),
);
} else {
fs.writeFileSync(outputPath, propTypes);
}
});
});
});