PHP-CS-Fixer/tests/Fixer/StringNotation/SimpleToComplexStringVariableFixerTest.php

<?php

declare(strict_types=1);

/*
 * This file is part of PHP CS Fixer.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *     Dariusz Rumiński <dariusz.ruminski@gmail.com>
 *
 * This source file is subject to the MIT license that is bundled
 * with this source code in the file LICENSE.
 */

namespace PhpCsFixer\Tests\Fixer\StringNotation;

use PhpCsFixer\Tests\Test\AbstractFixerTestCase;

/**
 * @author Dave van der Brugge <dmvdbrugge@gmail.com>
 *
 * @internal
 *
 * @covers \PhpCsFixer\Fixer\StringNotation\SimpleToComplexStringVariableFixer
 */
final class SimpleToComplexStringVariableFixerTest extends AbstractFixerTestCase
{
    /**
     * @dataProvider provideFixCases
     */
    public function testFix(string $expected, ?string $input = null): void
    {
        $this->doTest($expected, $input);
    }

    public static function provideFixCases(): iterable
    {
        return [
            'basic fix' => [
                <<<'EXPECTED'
<?php
$name = "World";
echo "Hello {$name}!";
EXPECTED
                ,
                <<<'INPUT'
<?php
$name = "World";
echo "Hello ${name}!";
INPUT
                ,
            ],
            'heredoc' => [
                <<<'EXPECTED'
<?php
$name = 'World';
echo <<<TEST
Hello {$name}!
TEST;

EXPECTED
                ,
                <<<'INPUT'
<?php
$name = 'World';
echo <<<TEST
Hello ${name}!
TEST;

INPUT
                ,
            ],
            'implicit' => [
                <<<'EXPECTED'
<?php
$name = 'World';
echo "Hello $name!";
EXPECTED
                ,
            ],
            'implicit again' => [
                <<<'EXPECTED'
<?php
$name = 'World';
echo "Hello { $name }!";
EXPECTED
                ,
            ],
            'escaped' => [
                <<<'EXPECTED'
<?php
$name = 'World';
echo "Hello \${name}";
EXPECTED
                ,
            ],
            'double dollar' => [
                <<<'EXPECTED'
<?php
$name = 'World';
echo "Hello \${$name}";
EXPECTED
                ,
                <<<'INPUT'
<?php
$name = 'World';
echo "Hello $${name}";
INPUT
                ,
            ],
            'double dollar heredoc' => [
                <<<'EXPECTED'
<?php
$name = 'World';
echo <<<TEST
Hello \${$name}!
TEST;

EXPECTED
                ,
                <<<'INPUT'
<?php
$name = 'World';
echo <<<TEST
Hello $${name}!
TEST;

INPUT
                ,
            ],
            'double dollar single quote' => [
                <<<'EXPECTED'
<?php
$name = 'World';
echo 'Hello $${name}';
EXPECTED
                ,
            ],
        ];
    }
}