<?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\ControlStructure;

use PhpCsFixer\Tests\Test\AbstractFixerTestCase;

/**
 * @internal
 *
 * @covers \PhpCsFixer\Fixer\ControlStructure\EmptyLoopBodyFixer
 */
final class EmptyLoopBodyFixerTest extends AbstractFixerTestCase
{
    /**
     * @dataProvider provideFixCases
     */
    public function testFixConfig(string $expected, ?string $input = null, array $config = null): void
    {
        if (null === $config) {
            $this->doTest($expected, $input);

            $this->fixer->configure(['style' => 'braces']);

            if (null === $input) {
                $this->doTest($expected, $input);
            } else {
                $this->doTest($input, $expected);
            }
        } else {
            $this->fixer->configure($config);
            $this->doTest($expected, $input);
        }
    }

    public function provideFixCases(): \Generator
    {
        yield 'simple "while"' => [
            '<?php while(foo());',
            '<?php while(foo()){}',
        ];

        yield 'simple "for"' => [
            '<?php for($i = 0;foo();++$i);',
            '<?php for($i = 0;foo();++$i){}',
        ];

        yield 'simple "foreach"' => [
            '<?php foreach (Foo() as $f);',
            '<?php foreach (Foo() as $f){}',
        ];

        yield '"while" followed by "do-while"' => [
            '<?php while(foo(static function(){})); do{ echo 1; }while(bar());',
            '<?php while(foo(static function(){})){} do{ echo 1; }while(bar());',
        ];

        yield 'empty "while" after "if"' => [
            '<?php
if ($foo) {
    echo $bar;
} while(foo());
',
            '<?php
if ($foo) {
    echo $bar;
} while(foo()){}
',
        ];

        yield 'nested and mixed loops' => [
            '<?php

do {
    while($foo()) {
        while(B()); // fix
        for($i = 0;foo();++$i); // fix

        for($i = 0;foo();++$i) {
            foreach (Foo() as $f); // fix
        }
    }
} while(foo());
',
            '<?php

do {
    while($foo()) {
        while(B()){} // fix
        for($i = 0;foo();++$i){} // fix

        for($i = 0;foo();++$i) {
            foreach (Foo() as $f){} // fix
        }
    }
} while(foo());
',
        ];

        yield 'not empty "while"' => [
            '<?php while(foo()){ bar(); };',
        ];

        yield 'not empty "for"' => [
            '<?php for($i = 0; foo(); ++$i){ bar(); }',
        ];

        yield 'not empty "foreach"' => [
            '<?php foreach (foo() as $f){ echo 1; }',
        ];

        yield 'test with lot of space' => [
            '<?php while (foo1())
;



echo 1;
',
            '<?php while (foo1())
{

}

echo 1;
',
            ['style' => 'semicolon'],
        ];
    }
}