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|
const fs = require('fs');
const path = require('path');
const {EventEmitter} = require('events');
const test = require('tape');
const delay = require('delay');
//const isCi = require('is-ci');
//const {Server as KarmaServer} = require('karma');
//const browser = require('./browser');
const node = require('./');
const implementations = {node};
fs.writeFileSync(
path.join(__dirname, 'browser-bluebird-test.js'),
'var Promise = require("bluebird");\n' +
fs.readFileSync(
path.join(__dirname, 'browser-test.js'),
'utf8'
)
);
const mocks = {
node() {
const ee = new EventEmitter();
return {
mock: {
on(name, handler) {
ee.on(name, handler);
}
},
unhandled({promise, reason}) {
ee.emit('unhandledRejection', reason, promise);
},
handled({promise}) {
ee.emit('rejectionHandled', promise);
}
};
},
/*
browser() {
const ee = new EventEmitter();
return {
mock: {
addEventListener(name, handler) {
ee.on(name, handler);
}
},
unhandled({promise, reason}) {
ee.emit('unhandledrejection', {promise, reason});
},
handled({promise, reason}) {
ee.emit('rejectionhandled', {promise, reason});
}
};
}
*/
};
function event(reason) {
return {
promise: {},
reason: reason
};
}
function messagesHelper(currentlyUnhandled) {
return () => currentlyUnhandled().map(obj => obj.reason.message);
}
function generateTests(type) {
function setup() {
const mock = mocks[type]();
const currentlyUnhandled = implementations[type](mock.mock);
const messages = messagesHelper(currentlyUnhandled);
return {mock, currentlyUnhandled, messages};
}
test(`${type}: adds promises as they are rejected`, t => {
const {mock, currentlyUnhandled, messages} = setup();
const event1 = event(new Error('foo'));
mock.unhandled(event1);
let unhandled = currentlyUnhandled();
t.is(unhandled.length, 1);
t.is(unhandled[0].promise, event1.promise);
t.is(unhandled[0].reason.message, 'foo');
const event2 = event(new Error('bar'));
mock.unhandled(event2);
t.is(currentlyUnhandled().length, 2);
t.deepEqual(messages(), ['foo', 'bar']);
t.end();
});
function removalMacro(t, index, expected) {
const {mock, messages} = setup();
const events = [
event(new Error('foo')),
event(new Error('bar')),
event(new Error('baz'))
];
events.forEach(mock.unhandled);
t.deepEqual(messages(), ['foo', 'bar', 'baz']);
mock.handled(events[index]);
t.deepEqual(messages(), expected);
t.end();
}
test('removes promises as they are handled (from beginning)', t => {removalMacro(t, 0, ['bar', 'baz'])});
test('removes promises as they are handled (from middle)', t => {removalMacro(t, 1, ['foo', 'baz'])});
test('removes promises as they are handled (from middle)', t => {removalMacro(t, 2, ['foo', 'bar'])});
}
//generateTests('browser');
generateTests('node');
test('node: works as advertised', async t => {
var currentlyUnhandled = node();
var messages = messagesHelper(currentlyUnhandled);
var p1 = Promise.reject(new Error('foo'));
await delay(10);
t.deepEqual(messages(), ['foo']);
var p2 = Promise.reject(new Error('bar'));
await delay(10);
t.deepEqual(messages(), ['foo', 'bar']);
p1.catch(() => {});
await delay(10);
t.deepEqual(messages(), ['bar']);
p2.catch(() => {});
await delay(10);
t.deepEqual(messages(), []);
t.end();
});
function browserMacro(t, file, browsers) {
new KarmaServer({
frameworks: ['browserify', 'mocha'],
files: [file],
browsers,
preprocessors: {
[file]: ['browserify']
},
browserify: {
debug: true
},
singleRun: true,
autoWatch: false
}, exitCode => {
if (exitCode) {
t.fail(`karma exited with: ${exitCode}`);
}
t.end();
}).start();
}
/*
if (!isCi) {
test.serial.cb('actual browser (native promise)', browserMacro, 'browser-test.js', ['Chrome']); // eslint-disable-line ava/test-ended
}
test.serial.cb('actual browser (bluebird)', browserMacro, 'browser-bluebird-test.js', isCi ? ['Firefox'] : ['Firefox', 'Chrome']); // eslint-disable-line ava/test-ended
test.todo('add Firefox as tested browser when it supports the feature');
test.todo('add Safari as tested browser when it supports the feature');
test.todo('add IE as tested browser when it supports the feature');
*/
|
