jasmineAsyncInstall.js
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'use strict';
Object.defineProperty(exports, '__esModule', {
value: true
});
exports.default = jasmineAsyncInstall;
var _co = _interopRequireDefault(require('co'));
var _isGeneratorFn = _interopRequireDefault(require('is-generator-fn'));
var _throat = _interopRequireDefault(require('throat'));
var _isError = _interopRequireDefault(require('./isError'));
function _interopRequireDefault(obj) {
return obj && obj.__esModule ? obj : {default: obj};
}
var Symbol = global['jest-symbol-do-not-touch'] || global.Symbol;
var Symbol = global['jest-symbol-do-not-touch'] || global.Symbol;
var Promise = global[Symbol.for('jest-native-promise')] || global.Promise;
function isPromise(obj) {
return obj && typeof obj.then === 'function';
}
const doneFnNoop = () => {};
doneFnNoop.fail = () => {};
function promisifyLifeCycleFunction(originalFn, env) {
return function (fn, timeout) {
if (!fn) {
// @ts-expect-error: missing fn arg is handled by originalFn
return originalFn.call(env);
}
const hasDoneCallback = typeof fn === 'function' && fn.length > 0;
if (hasDoneCallback) {
// Jasmine will handle it
return originalFn.call(env, fn, timeout);
}
const extraError = new Error(); // Without this line v8 stores references to all closures
// in the stack in the Error object. This line stringifies the stack
// property to allow garbage-collecting objects on the stack
// https://crbug.com/v8/7142
extraError.stack = extraError.stack; // We make *all* functions async and run `done` right away if they
// didn't return a promise.
const asyncJestLifecycle = function (done) {
const wrappedFn = (0, _isGeneratorFn.default)(fn)
? _co.default.wrap(fn)
: fn;
const returnValue = wrappedFn.call({}, doneFnNoop);
if (isPromise(returnValue)) {
returnValue.then(done.bind(null, null), error => {
const {isError: checkIsError, message} = (0, _isError.default)(error);
if (message) {
extraError.message = message;
}
done.fail(checkIsError ? error : extraError);
});
} else {
done();
}
};
return originalFn.call(env, asyncJestLifecycle, timeout);
};
} // Similar to promisifyLifeCycleFunction but throws an error
// when the return value is neither a Promise nor `undefined`
function promisifyIt(originalFn, env, jasmine) {
return function (specName, fn, timeout) {
if (!fn) {
// @ts-expect-error: missing fn arg is handled by originalFn
const spec = originalFn.call(env, specName);
spec.pend('not implemented');
return spec;
}
const hasDoneCallback = fn.length > 0;
if (hasDoneCallback) {
return originalFn.call(env, specName, fn, timeout);
}
const extraError = new Error(); // Without this line v8 stores references to all closures
// in the stack in the Error object. This line stringifies the stack
// property to allow garbage-collecting objects on the stack
// https://crbug.com/v8/7142
extraError.stack = extraError.stack;
const asyncJestTest = function (done) {
const wrappedFn = (0, _isGeneratorFn.default)(fn)
? _co.default.wrap(fn)
: fn;
const returnValue = wrappedFn.call({}, doneFnNoop);
if (isPromise(returnValue)) {
returnValue.then(done.bind(null, null), error => {
const {isError: checkIsError, message} = (0, _isError.default)(error);
if (message) {
extraError.message = message;
}
if (jasmine.Spec.isPendingSpecException(error)) {
env.pending(message);
done();
} else {
done.fail(checkIsError ? error : extraError);
}
});
} else if (returnValue === undefined) {
done();
} else {
done.fail(
new Error(
'Jest: `it` and `test` must return either a Promise or undefined.'
)
);
}
};
return originalFn.call(env, specName, asyncJestTest, timeout);
};
}
function makeConcurrent(originalFn, env, mutex) {
const concurrentFn = function (specName, fn, timeout) {
let promise = Promise.resolve();
const spec = originalFn.call(env, specName, () => promise, timeout);
if (env != null && !env.specFilter(spec)) {
return spec;
}
try {
promise = mutex(() => {
const promise = fn();
if (isPromise(promise)) {
return promise;
}
throw new Error(
`Jest: concurrent test "${spec.getFullName()}" must return a Promise.`
);
});
} catch (error) {
promise = Promise.reject(error);
}
return spec;
}; // each is binded after the function is made concurrent, so for now it is made noop
concurrentFn.each = () => () => {};
return concurrentFn;
}
function jasmineAsyncInstall(globalConfig, global) {
const jasmine = global.jasmine;
const mutex = (0, _throat.default)(globalConfig.maxConcurrency);
const env = jasmine.getEnv();
env.it = promisifyIt(env.it, env, jasmine);
env.fit = promisifyIt(env.fit, env, jasmine);
global.it.concurrent = (env => {
const concurrent = makeConcurrent(env.it, env, mutex);
concurrent.only = makeConcurrent(env.fit, env, mutex);
concurrent.skip = makeConcurrent(env.xit, env, mutex);
return concurrent;
})(env);
global.fit.concurrent = makeConcurrent(env.fit, env, mutex);
env.afterAll = promisifyLifeCycleFunction(env.afterAll, env);
env.afterEach = promisifyLifeCycleFunction(env.afterEach, env);
env.beforeAll = promisifyLifeCycleFunction(env.beforeAll, env);
env.beforeEach = promisifyLifeCycleFunction(env.beforeEach, env);
}