test: implement spec builder (#3422)
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Dmitry Gozman
GitHub
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commit
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@ -29,39 +29,90 @@ process.env.JEST_WORKER_ID = 1;
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const fixturePool = new FixturePool();
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let revertBabelRequire;
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function specBuilder(modifiers, specCallback) {
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function builder(specs, last) {
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const callable = (...args) => {
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if (!last || (typeof args[0] === 'string' && typeof args[1] === 'function')) {
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// Looks like a body (either it or describe). Assume that last modifier is true.
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const newSpecs = { ...specs };
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if (last)
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newSpecs[last] = [true];
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return specCallback(newSpecs, ...args);
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}
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const newSpecs = { ...specs };
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newSpecs[last] = args;
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return builder(newSpecs, null);
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};
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return new Proxy(callable, {
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get: (obj, prop) => {
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if (typeof prop === 'string' && modifiers.includes(prop)) {
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const newSpecs = { ...specs };
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// Modifier was not called, assume true.
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if (last)
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newSpecs[last] = [true];
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return builder(newSpecs, prop);
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}
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return obj[prop];
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},
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});
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}
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return builder({}, null);
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}
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function fixturesUI(trialRun, suite) {
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const suites = [suite];
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suite.on(Suite.constants.EVENT_FILE_PRE_REQUIRE, function(context, file, mocha) {
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const common = commonSuite(suites, context, mocha);
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const itBuilder = (markers) => {
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return function(title, fn) {
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const suite = suites[0];
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if (suite.isPending())
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fn = null;
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let wrapper;
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if (trialRun) {
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if (fn)
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wrapper = () => {};
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} else {
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const wrapped = fixturePool.wrapTestCallback(fn);
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wrapper = wrapped ? (done, ...args) => {
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wrapped(...args).then(done).catch(done);
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} : undefined;
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}
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if (wrapper) {
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wrapper.toString = () => fn.toString();
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wrapper.__original = fn;
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}
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const test = new Test(title, wrapper);
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if (markers && markers.includes('slow'))
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test.timeout(90000);
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test.file = file;
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suite.addTest(test);
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return test;
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};
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};
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const it = specBuilder(['skip', 'fail', 'slow', 'only'], (specs, title, fn) => {
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const suite = suites[0];
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if (suite.isPending())
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fn = null;
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let wrapper;
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if (trialRun) {
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if (fn)
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wrapper = () => {};
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} else {
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const wrapped = fixturePool.wrapTestCallback(fn);
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wrapper = wrapped ? (done, ...args) => {
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wrapped(...args).then(done).catch(done);
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} : undefined;
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}
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if (wrapper) {
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wrapper.toString = () => fn.toString();
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wrapper.__original = fn;
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}
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const test = new Test(title, wrapper);
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test.file = file;
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suite.addTest(test);
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const only = specs.only && specs.only[0];
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if (specs.slow && specs.slow[0])
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test.timeout(90000);
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if (only)
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test.markOnly();
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if (!only && specs.skip && specs.skip[0])
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test.pending = true;
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if (!only && specs.fail && specs.fail[0])
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test.pending = true;
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return test;
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});
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const describe = specBuilder(['skip', 'fail', 'only'], (specs, title, fn) => {
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const suite = common.suite.create({
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title: title,
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file: file,
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fn: fn
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});
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const only = specs.only && specs.only[0];
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if (only)
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suite.markOnly();
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if (!only && specs.skip && specs.skip[0])
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suite.pending = true;
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if (!only && specs.fail && specs.fail[0])
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suite.pending = true;
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return suite;
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});
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context.beforeEach = common.beforeEach;
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context.afterEach = common.afterEach;
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@ -77,52 +128,12 @@ function fixturesUI(trialRun, suite) {
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context.run = mocha.options.delay && common.runWithSuite(suite);
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context.describe = (title, fn) => {
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return common.suite.create({
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title: title,
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file: file,
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fn: fn
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});
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};
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context.xdescribe = (title, fn) => {
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return common.suite.skip({
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title: title,
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file: file,
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fn: fn
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});
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};
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context.describe.skip = function(condition) {
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return condition ? context.xdescribe : context.describe;
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};
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context.describe.only = (title, fn) => {
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return common.suite.only({
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title: title,
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file: file,
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fn: fn
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});
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};
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context.fdescribe = context.describe.only;
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context.it = itBuilder();
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context.it.only = function(title, fn) {
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return common.test.only(mocha, context.it(title, fn));
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};
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context.fit = context.it.only;
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context.xit = function(title) {
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return context.it(title);
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};
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context.it.skip = function(condition) {
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return condition ? context.xit : context.it;
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};
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context.it.fail = function(condition) {
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return condition ? context.xit : context.it;
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};
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context.it.slow = () => itBuilder(['slow']);
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context.xit.slow = () => context.xit;
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context.it.retries = function(n) {
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context.retries(n);
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};
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context.describe = describe;
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context.fdescribe = describe.only(true);
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context.xdescribe = describe.skip(true);
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context.it = it;
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context.fit = it.only(true);
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context.xit = it.skip(true);
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revertBabelRequire = pirates.addHook((code, filename) => {
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const result = babel.transformFileSync(filename, {
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