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<?php declare(strict_types=1);
/*
* This file is part of sebastian/diff.
*
* (c) Sebastian Bergmann <sebastian@phpunit.de>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace SebastianBergmann\Diff\Output;
use PHPUnit\Framework\TestCase;
use SebastianBergmann\Diff\Differ;
use SebastianBergmann\Diff\Utils\FileUtils;
use SebastianBergmann\Diff\Utils\UnifiedDiffAssertTrait;
use Symfony\Component\Process\Process;
/**
* @covers SebastianBergmann\Diff\Output\StrictUnifiedDiffOutputBuilder
*
* @uses SebastianBergmann\Diff\Differ
* @uses SebastianBergmann\Diff\TimeEfficientLongestCommonSubsequenceCalculator
*
* @requires OS Linux
*/
final class StrictUnifiedDiffOutputBuilderIntegrationTest extends TestCase
{
use UnifiedDiffAssertTrait;
private $dir;
private $fileFrom;
private $fileTo;
private $filePatch;
protected function setUp(): void
{
$this->dir = \realpath(__DIR__ . '/../../fixtures/out') . '/';
$this->fileFrom = $this->dir . 'from.txt';
$this->fileTo = $this->dir . 'to.txt';
$this->filePatch = $this->dir . 'diff.patch';
if (!\is_dir($this->dir)) {
throw new \RuntimeException('Integration test working directory not found.');
}
$this->cleanUpTempFiles();
}
protected function tearDown(): void
{
$this->cleanUpTempFiles();
}
/**
* Integration test
*
* - get a file pair
* - create a `diff` between the files
* - test applying the diff using `git apply`
* - test applying the diff using `patch`
*
* @param string $fileFrom
* @param string $fileTo
*
* @dataProvider provideFilePairs
*/
public function testIntegrationUsingPHPFileInVendorGitApply(string $fileFrom, string $fileTo): void
{
$from = FileUtils::getFileContent($fileFrom);
$to = FileUtils::getFileContent($fileTo);
$diff = (new Differ(new StrictUnifiedDiffOutputBuilder(['fromFile' => 'Original', 'toFile' => 'New'])))->diff($from, $to);
if ('' === $diff && $from === $to) {
// odd case: test after executing as it is more efficient than to read the files and check the contents every time
$this->addToAssertionCount(1);
return;
}
$this->doIntegrationTestGitApply($diff, $from, $to);
}
/**
* Integration test
*
* - get a file pair
* - create a `diff` between the files
* - test applying the diff using `git apply`
* - test applying the diff using `patch`
*
* @param string $fileFrom
* @param string $fileTo
*
* @dataProvider provideFilePairs
*/
public function testIntegrationUsingPHPFileInVendorPatch(string $fileFrom, string $fileTo): void
{
$from = FileUtils::getFileContent($fileFrom);
$to = FileUtils::getFileContent($fileTo);
$diff = (new Differ(new StrictUnifiedDiffOutputBuilder(['fromFile' => 'Original', 'toFile' => 'New'])))->diff($from, $to);
if ('' === $diff && $from === $to) {
// odd case: test after executing as it is more efficient than to read the files and check the contents every time
$this->addToAssertionCount(1);
return;
}
$this->doIntegrationTestPatch($diff, $from, $to);
}
/**
* @param string $expected
* @param string $from
* @param string $to
*
* @dataProvider provideOutputBuildingCases
* @dataProvider provideSample
* @dataProvider provideBasicDiffGeneration
*/
public function testIntegrationOfUnitTestCasesGitApply(string $expected, string $from, string $to): void
{
$this->doIntegrationTestGitApply($expected, $from, $to);
}
/**
* @param string $expected
* @param string $from
* @param string $to
*
* @dataProvider provideOutputBuildingCases
* @dataProvider provideSample
* @dataProvider provideBasicDiffGeneration
*/
public function testIntegrationOfUnitTestCasesPatch(string $expected, string $from, string $to): void
{
$this->doIntegrationTestPatch($expected, $from, $to);
}
public function provideOutputBuildingCases(): array
{
return StrictUnifiedDiffOutputBuilderDataProvider::provideOutputBuildingCases();
}
public function provideSample(): array
{
return StrictUnifiedDiffOutputBuilderDataProvider::provideSample();
}
public function provideBasicDiffGeneration(): array
{
return StrictUnifiedDiffOutputBuilderDataProvider::provideBasicDiffGeneration();
}
public function provideFilePairs(): array
{
$cases = [];
$fromFile = __FILE__;
$vendorDir = \realpath(__DIR__ . '/../../../vendor');
$fileIterator = new \RecursiveIteratorIterator(new \RecursiveDirectoryIterator($vendorDir, \RecursiveDirectoryIterator::SKIP_DOTS));
/** @var \SplFileInfo $file */
foreach ($fileIterator as $file) {
if ('php' !== $file->getExtension()) {
continue;
}
$toFile = $file->getPathname();
$cases[\sprintf("Diff file:\n\"%s\"\nvs.\n\"%s\"\n", \realpath($fromFile), \realpath($toFile))] = [$fromFile, $toFile];
$fromFile = $toFile;
}
return $cases;
}
/**
* Compare diff create by builder and against one create by `diff` command.
*
* @param string $diff
* @param string $from
* @param string $to
*
* @dataProvider provideBasicDiffGeneration
*/
public function testIntegrationDiffOutputBuilderVersusDiffCommand(string $diff, string $from, string $to): void
{
$this->assertNotSame('', $diff);
$this->assertValidUnifiedDiffFormat($diff);
$this->assertNotFalse(\file_put_contents($this->fileFrom, $from));
$this->assertNotFalse(\file_put_contents($this->fileTo, $to));
$p = new Process(\sprintf('diff -u %s %s', \escapeshellarg($this->fileFrom), \escapeshellarg($this->fileTo)));
$p->run();
$this->assertSame(1, $p->getExitCode()); // note: Process assumes exit code 0 for `isSuccessful`, however `diff` uses the exit code `1` for success with diff
$output = $p->getOutput();
$diffLines = \preg_split('/(.*\R)/', $diff, -1, PREG_SPLIT_DELIM_CAPTURE | PREG_SPLIT_NO_EMPTY);
$diffLines[0] = \preg_replace('#^\-\-\- .*#', '--- /' . $this->fileFrom, $diffLines[0], 1);
$diffLines[1] = \preg_replace('#^\+\+\+ .*#', '+++ /' . $this->fileFrom, $diffLines[1], 1);
$diff = \implode('', $diffLines);
$outputLines = \preg_split('/(.*\R)/', $output, -1, PREG_SPLIT_DELIM_CAPTURE | PREG_SPLIT_NO_EMPTY);
$outputLines[0] = \preg_replace('#^\-\-\- .*#', '--- /' . $this->fileFrom, $outputLines[0], 1);
$outputLines[1] = \preg_replace('#^\+\+\+ .*#', '+++ /' . $this->fileFrom, $outputLines[1], 1);
$output = \implode('', $outputLines);
$this->assertSame($diff, $output);
}
private function doIntegrationTestGitApply(string $diff, string $from, string $to): void
{
$this->assertNotSame('', $diff);
$this->assertValidUnifiedDiffFormat($diff);
$diff = self::setDiffFileHeader($diff, $this->fileFrom);
$this->assertNotFalse(\file_put_contents($this->fileFrom, $from));
$this->assertNotFalse(\file_put_contents($this->filePatch, $diff));
$p = new Process(\sprintf(
'git --git-dir %s apply --check -v --unsafe-paths --ignore-whitespace %s',
\escapeshellarg($this->dir),
\escapeshellarg($this->filePatch)
));
$p->run();
$this->assertProcessSuccessful($p);
}
private function doIntegrationTestPatch(string $diff, string $from, string $to): void
{
$this->assertNotSame('', $diff);
$this->assertValidUnifiedDiffFormat($diff);
$diff = self::setDiffFileHeader($diff, $this->fileFrom);
$this->assertNotFalse(\file_put_contents($this->fileFrom, $from));
$this->assertNotFalse(\file_put_contents($this->filePatch, $diff));
$command = \sprintf(
'patch -u --verbose --posix %s < %s',
\escapeshellarg($this->fileFrom),
\escapeshellarg($this->filePatch)
);
$p = new Process($command);
$p->run();
$this->assertProcessSuccessful($p);
$this->assertStringEqualsFile(
$this->fileFrom,
$to,
\sprintf('Patch command "%s".', $command)
);
}
private function assertProcessSuccessful(Process $p): void
{
$this->assertTrue(
$p->isSuccessful(),
\sprintf(
"Command exec. was not successful:\n\"%s\"\nOutput:\n\"%s\"\nStdErr:\n\"%s\"\nExit code %d.\n",
$p->getCommandLine(),
$p->getOutput(),
$p->getErrorOutput(),
$p->getExitCode()
)
);
}
private function cleanUpTempFiles(): void
{
@\unlink($this->fileFrom . '.orig');
@\unlink($this->fileFrom . '.rej');
@\unlink($this->fileFrom);
@\unlink($this->fileTo);
@\unlink($this->filePatch);
}
private static function setDiffFileHeader(string $diff, string $file): string
{
$diffLines = \preg_split('/(.*\R)/', $diff, -1, PREG_SPLIT_DELIM_CAPTURE | PREG_SPLIT_NO_EMPTY);
$diffLines[0] = \preg_replace('#^\-\-\- .*#', '--- /' . $file, $diffLines[0], 1);
$diffLines[1] = \preg_replace('#^\+\+\+ .*#', '+++ /' . $file, $diffLines[1], 1);
return \implode('', $diffLines);
}
}