Starts using Jest for tests.

Author: zorkow

tests/.babelrc

@@ -0,0 +1,4 @@
+{
+    "presets": ["@babel/preset-env"],
+    "plugins": ["transform-class-properties"]
+}

tests/jest.config.js

@@ -0,0 +1,195 @@
+// For a detailed explanation regarding each configuration property, visit:
+// https://jestjs.io/docs/en/configuration.html
+
+module.exports = {
+  // All imported modules in your tests should be mocked automatically
+  // automock: false,
+
+  // Stop running tests after `n` failures
+  // bail: 0,
+
+  // The directory where Jest should store its cached dependency information
+  // cacheDirectory: "/tmp/jest_rs",
+
+  // Automatically clear mock calls and instances between every test
+  clearMocks: true,
+
+  // Indicates whether the coverage information should be collected while executing the test
+  // collectCoverage: false,
+
+  // An array of glob patterns indicating a set of files for which coverage information should be collected
+  // collectCoverageFrom: undefined,
+
+  // The directory where Jest should output its coverage files
+  coverageDirectory: "coverage",
+
+  // An array of regexp pattern strings used to skip coverage collection
+  // coveragePathIgnorePatterns: [
+  //   "/node_modules/"
+  // ],
+
+  // Indicates which provider should be used to instrument code for coverage
+  coverageProvider: "v8",
+
+  // A list of reporter names that Jest uses when writing coverage reports
+  // coverageReporters: [
+  //   "json",
+  //   "text",
+  //   "lcov",
+  //   "clover"
+  // ],
+
+  // An object that configures minimum threshold enforcement for coverage results
+  // coverageThreshold: undefined,
+
+  // A path to a custom dependency extractor
+  // dependencyExtractor: undefined,
+
+  // Make calling deprecated APIs throw helpful error messages
+  // errorOnDeprecated: false,
+
+  // Force coverage collection from ignored files using an array of glob patterns
+  // forceCoverageMatch: [],
+
+  // A path to a module which exports an async function that is triggered once before all test suites
+  // globalSetup: undefined,
+
+  // A path to a module which exports an async function that is triggered once after all test suites
+  // globalTeardown: undefined,
+
+  // A set of global variables that need to be available in all test environments
+  // globals: {},
+
+  // The maximum amount of workers used to run your tests. Can be specified as % or a number. E.g. maxWorkers: 10% will use 10% of your CPU amount + 1 as the maximum worker number. maxWorkers: 2 will use a maximum of 2 workers.
+  // maxWorkers: "50%",
+
+  // An array of directory names to be searched recursively up from the requiring module's location
+  // moduleDirectories: [
+  //   "node_modules"
+  // ],
+
+  // An array of file extensions your modules use
+  // moduleFileExtensions: [
+  //   "js",
+  //   "json",
+  //   "jsx",
+  //   "ts",
+  //   "tsx",
+  //   "node"
+  // ],
+
+  // A map from regular expressions to module names or to arrays of module names that allow to stub out resources with a single module
+  // moduleNameMapper: {},
+
+  // An array of regexp pattern strings, matched against all module paths before considered 'visible' to the module loader
+  // modulePathIgnorePatterns: [],
+
+  // Activates notifications for test results
+  // notify: false,
+
+  // An enum that specifies notification mode. Requires { notify: true }
+  // notifyMode: "failure-change",
+
+  // A preset that is used as a base for Jest's configuration
+  // preset: undefined,
+
+  // Run tests from one or more projects
+  // projects: undefined,
+
+  // Use this configuration option to add custom reporters to Jest
+  // reporters: undefined,
+
+  // Automatically reset mock state between every test
+  // resetMocks: false,
+
+  // Reset the module registry before running each individual test
+  // resetModules: false,
+
+  // A path to a custom resolver
+  // resolver: undefined,
+
+  // Automatically restore mock state between every test
+  // restoreMocks: false,
+
+  // The root directory that Jest should scan for tests and modules within
+  // rootDir: undefined,
+
+  // A list of paths to directories that Jest should use to search for files in
+  // roots: [
+  //   "<rootDir>"
+  // ],
+
+  // Allows you to use a custom runner instead of Jest's default test runner
+  // runner: "jest-runner",
+
+  // The paths to modules that run some code to configure or set up the testing environment before each test
+  // setupFiles: [],
+
+  // A list of paths to modules that run some code to configure or set up the testing framework before each test
+  // setupFilesAfterEnv: [],
+
+  // The number of seconds after which a test is considered as slow and reported as such in the results.
+  // slowTestThreshold: 5,
+
+  // A list of paths to snapshot serializer modules Jest should use for snapshot testing
+  // snapshotSerializers: [],
+
+  // The test environment that will be used for testing
+  testEnvironment: "node",
+
+  // Options that will be passed to the testEnvironment
+  // testEnvironmentOptions: {},
+
+  // Adds a location field to test results
+  // testLocationInResults: false,
+
+  // The glob patterns Jest uses to detect test files
+  // testMatch: [
+  //   "**/__tests__/**/*.[jt]s?(x)",
+  //   "**/?(*.)+(spec|test).[tj]s?(x)"
+  // ],
+
+  // An array of regexp pattern strings that are matched against all test paths, matched tests are skipped
+  // testPathIgnorePatterns: [
+  //   "/node_modules/"
+  // ],
+
+  // The regexp pattern or array of patterns that Jest uses to detect test files
+  // testRegex: [],
+
+  // This option allows the use of a custom results processor
+  // testResultsProcessor: undefined,
+
+  // This option allows use of a custom test runner
+  // testRunner: "jasmine2",
+
+  // This option sets the URL for the jsdom environment. It is reflected in properties such as location.href
+  // testURL: "http://localhost",
+
+  // Setting this value to "fake" allows the use of fake timers for functions such as "setTimeout"
+  // timers: "real",
+
+  // A map from regular expressions to paths to transformers
+  // transform: undefined,
+  "transform":  {
+    "^.+\\.jsx?$": "babel-jest",
+  },
+  
+  // An array of regexp pattern strings that are matched against all source file paths, matched files will skip transformation
+  // transformIgnorePatterns: [
+  //   "/node_modules/",
+  //   "\\.pnp\\.[^\\/]+$"
+  // ],
+
+  // An array of regexp pattern strings that are matched against all modules before the module loader will automatically return a mock for them
+  // unmockedModulePathPatterns: undefined,
+
+  // Indicates whether each individual test should be reported during the run
+  // verbose: undefined,
+
+  // An array of regexp patterns that are matched against all source file paths before re-running tests in watch mode
+  // watchPathIgnorePatterns: [],
+
+  // Whether to use watchman for file crawling
+  // watchman: true,
+};

tests/json/ParserActionTest.json

@@ -259,4 +259,4 @@
       }
     }
   }
-}
+}

tests/package.json

@@ -3,7 +3,7 @@
   "version": "0.2.0",
   "description": "Test framework for MathJax v3 TeX parser.",
   "scripts": {
-    "test": "./tests.sh"
+    "test": "jest"
   },
   "maintainers": [
     "Volker Sorge <V.Sorge@mathjax.org> (http://mathjax.org)"
@@ -14,7 +14,10 @@
   },
   "license": "Apache-2.0",
   "dependencies": {
-    "mathjax-full": "^3.1.2",
-    "tape": "^5.0.1"
+    "@babel/preset-env": "^7.11.5",
+    "babel-jest": "^26.5.2",
+    "babel-plugin-transform-class-properties": "^6.24.1",
+    "jest": "^26.5.2",
+    "mathjax-full": "^3.1.2"
   }
 }

tests/src/other-test.js

@@ -29,14 +29,14 @@ import ParseUtil from '../node_modules/mathjax-full/js/input/tex/ParseUtil.js';
 export class KeyvalTest extends JsonTest {
 
   runTest(name, input, expected) {
-    this.test(
-      name,
-      t => {
-        try {
-          let keyval = ParseUtil.keyvalOptions(input);
-          t.deepEqual(keyval, expected, name);
+      test(
+        name,
+        () => {
+          try {
+            let keyval = ParseUtil.keyvalOptions(input);
+            expect(keyval).toEqual(expected);
         } catch (e) {
-          t.deepEqual(e.message, expected, name);
+          expect(e.message).toEqual(expected);
         }
       }
     );

tests/src/parser-test.js

@@ -59,9 +59,9 @@ export class ParserJsonTest extends JsonTest {
     this.name = this.json['name'] || this.name;
     this.settings = this.json['settings'] || this.settings;
     this.processSettings();
-    console.log('\u001B\u005B\u0033\u0034\u006D' +
-                'Running tests from ' + (this.name || this.constructor.name) +
-                '\u001B\u005B\u0033\u0037\u006D');
+    // console.log('\u001B\u005B\u0033\u0034\u006D' +
+    //             'Running tests from ' + (this.name || this.constructor.name) +
+    //             '\u001B\u005B\u0033\u0037\u006D');
   }
 
   processSettings() {
@@ -83,20 +83,18 @@ export class ParserJsonTest extends JsonTest {
    * @override
    */
   runTest(name, tex, expected, rest) {
-    this.test(
+    test(
       name,
-      t => {
-        mathjax.handleRetriesFor(function() {
+      () => {
+        return mathjax.handleRetriesFor(function() {
           let options = {packages: this.packages};
           Object.assign(options, this.settings);
           let root = this.document(options).convert(tex, {end: STATE.CONVERT});
           let jv = new JsonMmlVisitor();
           root.setTeXclass(null);
-          let actual = jv.visitTree(root);
-          t.deepEqual(actual, expected, name);
-        }.bind(this)).catch(err => {
-          console.log(err.message);
-          console.log(err.stack.replace(/\n.*\/system\.js:(.|\n)*/, ''));
+          return jv.visitTree(root);
+        }.bind(this)).then(data => {
+          expect(data).toEqual(expected);
         });
       }
     );
@@ -116,6 +114,7 @@ export class ParserOutputTest extends ParserJsonTest {
    * @override
    */
   document(options) {
+    console.log('In SVG');
     return mathjax.document('<html></html>', {
       InputJax: new TeX(options), OutputJax: new SVG()
     });

tests/src/parser.test.js

@@ -0,0 +1,47 @@
+/*************************************************************
+ *
+ *  Copyright (c) 2020 The MathJax Consortium
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ */
+
+
+/**
+ * @fileoverview The current test runner.
+ *
+ * @author v.sorge@mathjax.org (Volker Sorge)
+ */
+
+import {TestFactory} from './test-factory.js';
+let process = require('process');
+
+
+let file = null;
+
+if (process.argv.length > 2) {
+  let last = process.argv[process.argv.length - 1];
+  if (!last.match(/^--/) && last.match(/\.json/)) {
+    file = last;
+  }
+}
+
+if (file) {
+  TestFactory.create(file).runTests();
+  process.exit;
+}
+
+if (!file) {
+  let tests = TestFactory.allParserTests();
+  tests.forEach( x => x.runTests());
+}
+

tests/src/test-factory.js

@@ -58,7 +58,7 @@ export class TestFactory {
     if (fs.lstatSync(TestFactory.testDir).isDirectory()) {
       files = fs.readdirSync(TestFactory.testDir).filter(x => x.match(/\.json$/));
     }
-    let tests = files.filter(
+    let tests = files.map(
       file => TestFactory.create(TestFactory.testDir + '/' + file));
     return tests;
   }