54 lines
1.3 KiB
PHP
Executable File
54 lines
1.3 KiB
PHP
Executable File
<?php
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/*
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* This file is part of the Symfony package.
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*
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* (c) Fabien Potencier <fabien@symfony.com>
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*
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* For the full copyright and license information, please view the LICENSE
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* file that was distributed with this source code.
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*/
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namespace Symfony\Component\DependencyInjection\Tests\Argument;
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use PHPUnit\Framework\TestCase;
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use Symfony\Component\DependencyInjection\Argument\RewindableGenerator;
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class RewindableGeneratorTest extends TestCase
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{
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public function testImplementsCountable()
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{
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$this->assertInstanceOf(\Countable::class, new RewindableGenerator(function () {
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yield 1;
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}, 1));
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}
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public function testCountUsesProvidedValue()
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{
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$generator = new RewindableGenerator(function () {
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yield 1;
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}, 3);
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$this->assertCount(3, $generator);
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}
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public function testCountUsesProvidedValueAsCallback()
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{
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$called = 0;
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$generator = new RewindableGenerator(function () {
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yield 1;
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}, function () use (&$called) {
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++$called;
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return 3;
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});
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$this->assertSame(0, $called, 'Count callback is called lazily');
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$this->assertCount(3, $generator);
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\count($generator);
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$this->assertSame(1, $called, 'Count callback is called only once');
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}
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}
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