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  • Garlix
  • ..
  • Traits
  • Test.php
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  • hakeem's avatar
    testing · 87eadb51
    hakeem committed 5 years ago
    87eadb51
Test.php 3.07 KB
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<?php

/**
 * This file is part of the Carbon package.
 *
 * (c) Brian Nesbitt <brian@nesbot.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */
namespace Carbon\Traits;

use Carbon\CarbonInterface;

trait Test
{
    ///////////////////////////////////////////////////////////////////
    ///////////////////////// TESTING AIDS ////////////////////////////
    ///////////////////////////////////////////////////////////////////

    /**
     * A test Carbon instance to be returned when now instances are created.
     *
     * @var static|CarbonInterface
     */
    protected static $testNow;

    /**
     * Set a Carbon instance (real or mock) to be returned when a "now"
     * instance is created.  The provided instance will be returned
     * specifically under the following conditions:
     *   - A call to the static now() method, ex. Carbon::now()
     *   - When a null (or blank string) is passed to the constructor or parse(), ex. new Carbon(null)
     *   - When the string "now" is passed to the constructor or parse(), ex. new Carbon('now')
     *   - When a string containing the desired time is passed to Carbon::parse().
     *
     * Note the timezone parameter was left out of the examples above and
     * has no affect as the mock value will be returned regardless of its value.
     *
     * To clear the test instance call this method using the default
     * parameter of null.
     *
     * /!\ Use this method for unit tests only.
     *
     * @param CarbonInterface|string|null $testNow real or mock Carbon instance
     */
    public static function setTestNow($testNow = null)
    {
        static::$testNow = is_string($testNow) ? static::parse($testNow) : $testNow;
    }

    /**
     * Get the Carbon instance (real or mock) to be returned when a "now"
     * instance is created.
     *
     * @return static|CarbonInterface the current instance used for testing
     */
    public static function getTestNow()
    {
        return static::$testNow;
    }

    /**
     * Determine if there is a valid test instance set. A valid test instance
     * is anything that is not null.
     *
     * @return bool true if there is a test instance, otherwise false
     */
    public static function hasTestNow()
    {
        return static::getTestNow() !== null;
    }

    protected static function mockConstructorParameters(&$time, &$tz)
    {
        /** @var \Carbon\CarbonImmutable|\Carbon\Carbon $testInstance */
        $testInstance = clone static::getTestNow();

        //shift the time according to the given time zone
        if ($tz !== null && $tz !== static::getTestNow()->getTimezone()) {
            $testInstance = $testInstance->setTimezone($tz);
        } else {
            $tz = $testInstance->getTimezone();
        }

        if (static::hasRelativeKeywords($time)) {
            $testInstance = $testInstance->modify($time);
        }

        $time = $testInstance instanceof self ? $testInstance->rawFormat(static::MOCK_DATETIME_FORMAT) : $testInstance->format(static::MOCK_DATETIME_FORMAT);
    }
}