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108 lines
5.7 KiB
108 lines
5.7 KiB
"use strict";
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var __createBinding = (this && this.__createBinding) || (Object.create ? (function(o, m, k, k2) {
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if (k2 === undefined) k2 = k;
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Object.defineProperty(o, k2, { enumerable: true, get: function() { return m[k]; } });
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}) : (function(o, m, k, k2) {
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if (k2 === undefined) k2 = k;
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o[k2] = m[k];
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}));
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var __setModuleDefault = (this && this.__setModuleDefault) || (Object.create ? (function(o, v) {
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Object.defineProperty(o, "default", { enumerable: true, value: v });
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}) : function(o, v) {
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o["default"] = v;
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});
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var __importStar = (this && this.__importStar) || function (mod) {
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if (mod && mod.__esModule) return mod;
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var result = {};
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if (mod != null) for (var k in mod) if (k !== "default" && Object.prototype.hasOwnProperty.call(mod, k)) __createBinding(result, mod, k);
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__setModuleDefault(result, mod);
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return result;
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};
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Object.defineProperty(exports, "__esModule", { value: true });
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const fs = __importStar(require("fs"));
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const path = __importStar(require("path"));
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/**
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* Utility function to run a jscodeshift script within a unit test.
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* This makes several assumptions about the environment.
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*
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* Notes:
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* - The test should be located in a subdirectory next to the transform itself.
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* Commonly tests are located in a directory called __tests__.
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*
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* - Test data should be located in a directory called __testfixtures__
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* alongside the transform and __tests__ directory.
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* @param {String} dirName contains the name of the directory the test is located in. This
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* should normally be passed via __dirname.
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* @param {String} transformName contains the filename of the transform being tested,
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* excluding the .js extension.
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* @param {String} [testFilePrefix] Optionally contains the name of the file with the test
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* data. If not specified, it defaults to the same value as `transformName`.
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* This will be suffixed with ".input.js" for the input file and ".output.js"
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* for the expected output. For example, if set to "foo", we will read the
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* "foo.input.js" file, pass this to the transform, and expect its output to
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* be equal to the contents of "foo.output.js".
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* @param {Object|Boolean|String} initOptions TBD
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* @param {String} action init, update or remove, decides how to format the AST
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* @return {Function} Function that fires of the transforms
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*/
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function runSingleTransform(dirName, transformName, testFilePrefix, initOptions, action) {
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if (!testFilePrefix) {
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testFilePrefix = transformName;
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}
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const fixtureDir = path.join(dirName, '__testfixtures__');
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const inputPath = path.join(fixtureDir, `${testFilePrefix}.input.js`);
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const source = fs.readFileSync(inputPath, 'utf8');
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let module;
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// Assumes transform and test are on the same level
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if (action) {
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module = require(path.join(dirName, '../../', 'recursive-parser.ts'));
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}
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else {
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module = require(path.join(dirName, '../../src/', transformName, `${transformName}.ts`));
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}
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// Handle ES6 modules using default export for the transform
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const transform = module.default ? module.default : module;
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// Jest resets the module registry after each test, so we need to always get
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// a fresh copy of jscodeshift on every test run.
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// eslint-disable-next-line
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let jscodeshift = require('jscodeshift/dist/core');
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if (module.parser) {
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jscodeshift = jscodeshift.withParser(module.parser);
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}
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const ast = jscodeshift(source);
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if (initOptions || typeof initOptions === 'boolean') {
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return transform(jscodeshift, ast, initOptions, action, transformName).toSource({
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quote: 'single',
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});
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}
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return transform(jscodeshift, ast, source, action).toSource({
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quote: 'single',
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});
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}
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/**
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* Handles some boilerplate around defining a simple jest/Jasmine test for a
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* jscodeshift transform.
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* @param {String} dirName contains the name of the directory the test is located in. This
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* should normally be passed via __dirname.
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* @param {String} transformName contains the filename of the transform being tested,
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* excluding the .js extension.
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* @param {String} [testFilePrefix] Optionally contains the name of the file with the test
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* data. If not specified, it defaults to the same value as `transformName`.
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* This will be suffixed with ".input.js" for the input file and ".output.js"
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* for the expected output. For example, if set to "foo", we will read the
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* "foo.input.js" file, pass this to the transform, and expect its output to
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* be equal to the contents of "foo.output.js".
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* @param {any} transformObject Object to be transformed with the transformations
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* @param {String} action init, update or remove, decides how to format the AST
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* @return {Void} Jest makes sure to execute the globally defined functions
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*/
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function defineTest(dirName, transformName, testFilePrefix, transformObject, action) {
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const testName = testFilePrefix ? `transforms correctly using "${testFilePrefix}" data` : 'transforms correctly';
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describe(transformName, () => {
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it(testName, () => {
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const output = runSingleTransform(dirName, transformName, testFilePrefix, transformObject, action);
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expect(output).toMatchSnapshot();
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});
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});
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}
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exports.default = defineTest;
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