Server : nginx/1.20.1 System : Linux ccpf-production-2021 5.4.0-148-generic #165-Ubuntu SMP Tue Apr 18 08:53:12 UTC 2023 x86_64 User : forge ( 1000) PHP Version : 7.4.21 Disable Function : pcntl_alarm,pcntl_fork,pcntl_waitpid,pcntl_wait,pcntl_wifexited,pcntl_wifstopped,pcntl_wifsignaled,pcntl_wifcontinued,pcntl_wexitstatus,pcntl_wtermsig,pcntl_wstopsig,pcntl_signal,pcntl_signal_get_handler,pcntl_signal_dispatch,pcntl_get_last_error,pcntl_strerror,pcntl_sigprocmask,pcntl_sigwaitinfo,pcntl_sigtimedwait,pcntl_exec,pcntl_getpriority,pcntl_setpriority,pcntl_async_signals,pcntl_unshare, Directory :  /usr/lib/node_modules/pm2/node_modules/lazy/test/

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var assert = require('assert');
var Lazy = require('..');
var expresso = expresso;

function range(i, j) {
    var r = [];
    for (;i<j;i++) r.push(i);
    return r;
}

exports['complex'] = function () {
    var lazy = new Lazy;
    var data1 = [];
    var data2 = [];
    var data3 = [];
    var joinExecuted = false;
    lazy
        .map(function (x) {
            return 2*x;
        })
        .forEach(function (x) {
            data1.push(x);
        })
        .map(function (x) {
            return x/2;
        })
        .take(5)
        .forEach(function (x) {
            data2.push(x);
        })
        .filter(function (x) {
            return x % 2 == 0;
        })
        .forEach(function (x) {
            data3.push(x);
        })
        .join(function (xs) {
            joinExecuted = true;
            assert.deepEqual(xs, [0, 2, 4]);
        });

    range(0,10).forEach(function (x) {
        lazy.emit('data', x);
    });
    lazy.emit('end');

    assert.deepEqual(data1, range(0,10).map(function (x) { return x*2 }));
    assert.deepEqual(data2, range(0,5));
    assert.deepEqual(data3, [0, 2, 4]);
    assert.ok(joinExecuted);
}