Craig Taub craigtaub
craigtaub
/ under-the-hood of test runner: mocha run().js
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May 26, 2020 12:18
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| Mocha.prototype.run = function (fn) { | |
| var suite = this.suite; | |
| var options = this.options; | |
| options.files = this.files; | |
| var runner = new Runner(suite, options.delay); | |
| createStatsCollector(runner); | |
| var reporter = new this._reporter(runner, options); | |
| const noop = () => ""; | |
| function done(failures) { |
craigtaub
/ under-the-hood of test runner: load files async.js
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May 26, 2020 12:03
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| Mocha.prototype.loadFilesAsync = async function () { | |
| var self = this; | |
| var suite = this.suite; | |
| for (let file of this.files) { | |
| // preload | |
| suite.emit(Suite.constants.EVENT_FILE_PRE_REQUIRE, global, file, self); | |
| // load | |
| file = path.resolve(file); | |
| const result = await require(file); |
craigtaub
/ under-the-hood of test runner: start execution.js
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May 26, 2020 11:49
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| async function runMocha(mocha, options) { | |
| const { spec = [] } = options; | |
| // if options.watch watchRun() | |
| // singleRun | |
| // collectFiles and lookupFiles here | |
| mocha.files = spec; | |
| await mocha.loadFilesAsync(); | |
| return mocha.run(exitMochaLater); |
craigtaub
/ under-the-hood of test runner: mocha contructor.js
Created
May 26, 2020 11:02
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| function Mocha(options) { | |
| this.files = []; | |
| this.options = options; | |
| // lib/context.js. empty context | |
| function Context() {} | |
| // root suite | |
| this.suite = new Suite("", new Context(), true); | |
| this.ui(options.ui).reporter(options.reporter); |
craigtaub
/ under-the-hood of test runner: bdd interface.js
Created
May 26, 2020 10:57
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| bdd: function bddInterface(suite) { | |
| var suites = [suite]; | |
| suite.on(Suite.constants.EVENT_FILE_PRE_REQUIRE, function ( | |
| context, | |
| file, | |
| mocha | |
| ) { | |
| var common = Mocha.interfaces.common(suites, context, mocha); |
craigtaub
/ under-the-hood of test runners: yargs.js
Created
May 25, 2020 12:02
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| // lib cli/cli.js main() | |
| const argv = process.argv.slice(2); | |
| // lib/cli/options loadOptions() | |
| var args = yargsParser.detailed(argv).argv; | |
| args._ = Array.from(new Set(args._)); | |
| yargs() | |
| .scriptName("our_mocha") | |
| .command(commands.run) | |
| .fail((msg, err, yargs) => { |
craigtaub
/ under-the-hood of test runner: parsing builder.js
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May 25, 2020 12:06
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| const builder = (yargs) => { | |
| // cli/run.js builder() | |
| return yargs | |
| .options({ | |
| config: { | |
| config: true, | |
| description: "Path to config file", | |
| }, | |
| reporter: { | |
| default: defaults.reporter, |
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| 1. User requests (dns lookup etc) | |
| 2. Server receives request | |
| - Express | |
| - Returns below in 0.25ms. | |
| <html> | |
| <script google-analytics> | |
| <body> | |
| <div>hey there</div> | |
| <script app.js> |
craigtaub
/ under-the-hood of type systems: compiler process program.js
Created
May 5, 2020 14:30
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| // Process program | |
| ast.program.body.map(stnmt => { | |
| switch (stnmt.type) { | |
| case "FunctionDeclaration": | |
| stnmt.params.map(arg => { | |
| // Does arg has a type annotation? | |
| if (arg.typeAnnotation) { | |
| const argType = arg.typeAnnotation.typeAnnotation.type; | |
| // Is type annotation valid | |
| const isValid = typeChecks.annotationCheck(argType); |
craigtaub
/ under-the-hood of type systems: type checks logic.js
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May 5, 2020 14:29
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| const errors = []; | |
| const ANNOTATED_TYPES = { | |
| NumberTypeAnnotation: "number", | |
| GenericTypeAnnotation: true | |
| }; | |
| // Logic for type checks | |
| const typeChecks = { | |
| expression: (declarationFullType, callerFullArg) => { |