mirror of
https://github.com/pestphp/pest.git
synced 2026-09-05 14:23:34 +02:00
wip
This commit is contained in:
nuno maduro
@@ -0,0 +1,638 @@
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<?php
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declare(strict_types=1);
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namespace Tests\Fixtures\Tia;
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use FilesystemIterator;
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use Pest\Factories\TestCaseFactory;
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use Pest\Plugins\Tia;
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use Pest\Plugins\Tia\ChangedFiles;
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use Pest\Plugins\Tia\FileState;
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use Pest\Plugins\Tia\Fingerprint;
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use Pest\Plugins\Tia\Graph;
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use Pest\Plugins\Tia\Storage;
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use Pest\Support\Str;
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use RecursiveDirectoryIterator;
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use RecursiveIteratorIterator;
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use RuntimeException;
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use Symfony\Component\Process\Process;
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/**
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* A throwaway Pest project the TIA scenario tests drive.
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*
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* Two facts about Pest shape everything here:
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*
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* 1. `bin/pest` derives the project root from **the autoloader it finds**, not
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* from the working directory — `dirname($autoloadPath, 2)`. So the project
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* owns a real `vendor/autoload.php` and a real copy of `bin/pest` at the path
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* a composer install would have put them. A symlinked `vendor` would resolve
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* `__DIR__` straight back to the Pest repository, and every scenario would
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* silently measure the wrong project.
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* 2. TIA cannot *record* without pcov or Xdebug, and CI has neither. So a
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* scenario never records: {@see self::seed()} writes the graph a recording
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* run would have written, and the run under test exercises the read path.
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*
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* @internal
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*/
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final class Project
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{
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/**
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* Test file → the source files a recording run would have linked it to. The
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* self-edge every test file gets is added on top of these.
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*
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* @var array<string, array<int, string>>
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*/
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public const array EDGES = [
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'tests/Unit/CalculatorTest.php' => ['app/Calculator.php'],
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'tests/Unit/GreeterTest.php' => ['app/Greeter.php'],
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'tests/Feature/CoversCalculatorTest.php' => ['app/Calculator.php'],
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];
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/**
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* Test file → the descriptions it declares, in declaration order.
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*
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* @var array<string, array<int, string>>
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*/
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public const array TESTS = [
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'tests/Unit/CalculatorTest.php' => ['adds two numbers', 'subtracts two numbers'],
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'tests/Unit/GreeterTest.php' => ['greets a person', 'greets the world'],
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'tests/Feature/CoversCalculatorTest.php' => ['adds within a feature test', 'subtracts within a feature test'],
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];
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/**
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* Every test in the fixture suite.
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*/
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public const int TOTAL_TESTS = 6;
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/**
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* Every project scaffolded so far, so a row cannot leak one by failing
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* before its own cleanup.
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*
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* @var array<int, self>
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*/
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private static array $created = [];
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private ?GitRepo $repo = null;
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/**
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* @var array<string, mixed>|null
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*/
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private ?array $snapshot = null;
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/**
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* @var array<int, string>
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*/
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private array $extraPaths = [];
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/**
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* The root whose graph this project reads and writes.
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*
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* Its own, except where a row seeds a worktree: a worktree's `.git` is a
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* file rather than a directory, so {@see Storage} cannot read the remote
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* from it and resolves a storage key of its own.
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*/
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private string $graphRoot;
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private function __construct(public readonly string $path)
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{
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$this->graphRoot = $path;
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}
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/**
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* Scaffolds a project whose default branch is `$branch`, and hands it back
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* checked out there.
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*
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* The repository is realistic on purpose: it has an `origin`, and an
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* `origin/HEAD` naming `$branch`, which is what a checkout of a real project
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* looks like and what the default branch is autodetected from.
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*/
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public static function make(string $branch = 'master', ?string $overlay = null): self
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{
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$project = self::scaffold($overlay);
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$project->git()->init($branch);
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$project->git()->addOrigin();
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$project->git()->setOriginHead($branch);
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return $project;
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}
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/**
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* Destroys every project scaffolded so far. Belongs in an `afterEach`.
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*/
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public static function destroyAll(): void
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{
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while (self::$created !== []) {
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array_pop(self::$created)->destroy();
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}
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}
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/**
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* A project that is not a git repository at all — for the rows that assert
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* TIA still demands git, and that a plain run does not care.
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*
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* Lives in the system temp directory, so it is outside any enclosing
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* repository, and owns a real `vendor` rather than a symlinked one, so its
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* baseline key cannot collide with another fixture's.
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*/
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public static function withoutGit(?string $overlay = null): self
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{
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return self::scaffold($overlay);
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}
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public function git(): GitRepo
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{
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return $this->repo ??= new GitRepo($this->path);
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}
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public function path(string $relative = ''): string
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{
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return $relative === '' ? $this->path : $this->path.DIRECTORY_SEPARATOR.$relative;
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}
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/**
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* Overwrites a file in the project.
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*
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* Edits must be semantic: TIA hashes PHP at the AST level, so a
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* comment-only change is not a change at all.
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*/
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public function write(string $relative, string $contents): void
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{
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$path = $this->path($relative);
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$directory = dirname($path);
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if (! is_dir($directory) && ! @mkdir($directory, 0755, true) && ! is_dir($directory)) {
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throw new RuntimeException(sprintf('Unable to create [%s].', $directory));
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}
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if (file_put_contents($path, $contents) === false) {
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throw new RuntimeException(sprintf('Unable to write [%s].', $path));
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}
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}
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/**
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* Adds a worktree for a new branch, scaffolded so `pest` can run in it, and
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* returns its path.
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*
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* The graph is shared with the main checkout, which is the whole point: both
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* resolve the same storage key, because {@see Storage} prefers the `origin`
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* identity over the path.
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*/
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public function worktree(string $branch): string
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{
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$path = $this->path.'-worktree-'.preg_replace('/[^a-z0-9]+/i', '-', $branch);
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$this->git()->worktree($path, $branch);
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$this->scaffoldVendor($path);
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$this->extraPaths[] = $path;
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return $path;
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}
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/**
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* Runs `pest` in the project and returns what happened.
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*/
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public function pest(string ...$arguments): PestResult
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{
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return $this->pestIn($this->path, ...$arguments);
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}
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/**
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* Runs `pest` in `$directory` — a worktree, say — against this project's
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* graph.
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*/
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public function pestIn(string $directory, string ...$arguments): PestResult
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{
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return $this->pestWithEnvironment($directory, [], ...$arguments);
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}
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/**
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* @param array<string, string> $environment
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*/
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public function pestWithEnvironment(string $directory, array $environment, string ...$arguments): PestResult
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{
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$process = new Process(
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[PHP_BINARY, $directory.'/vendor/pestphp/pest/bin/pest', ...$arguments],
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$directory,
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[
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...GitRepo::ENV,
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'COLLISION_PRINTER' => 'DefaultPrinter',
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'COLLISION_IGNORE_DURATION' => 'true',
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'PARATEST' => '0',
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'PAO_DISABLE' => '1',
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'HOME' => $this->home(),
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...$environment,
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],
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);
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$process->setTimeout(180.0);
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$process->run();
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return new PestResult(
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array_values($arguments),
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$process->getOutput().$process->getErrorOutput(),
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(int) $process->getExitCode(),
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);
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}
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/**
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* Writes the graph a clean, green recording run on `$branch` would have
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* written, and remembers it as the snapshot the next {@see self::delta()}
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* compares against.
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*
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* Sentinelled by default: a row almost always wants to know which entries
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* were written, and only a real recording run's values can answer that.
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*
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* `$failing` names descriptions to record as failures — a clean green run
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* can never cache one, so a row that needs a cached failure to re-run has to
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* be handed it.
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*
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* @param array<int, string> $failing
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*/
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public function seed(string $branch, bool $sentinel = true, array $failing = []): void
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{
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$this->seedFor($this->path, $branch, $sentinel, $failing);
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}
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/**
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* Seeds the graph belonging to `$root` — a worktree, say, which resolves a
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* storage key of its own.
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*
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* @param array<int, string> $failing
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*/
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public function seedFor(string $root, string $branch, bool $sentinel = true, array $failing = []): void
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{
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$this->graphRoot = $root;
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$changedFiles = new ChangedFiles($root);
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$sha = new GitRepo($root)->sha();
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$graph = new Graph($root);
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$graph->setFingerprint(Fingerprint::compute($root));
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$graph->setRecordedAtSha($branch, $sha);
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// Hashes the tree as it stands, so the run under test sees nothing as
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// changed — the same call the recording path makes.
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$graph->setLastRunTree($branch, $changedFiles->snapshotTree($changedFiles->since($sha) ?? []));
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$graph->markKnownTestFiles(array_keys(self::EDGES));
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foreach (self::EDGES as $testFile => $sourceFiles) {
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$graph->link($testFile, $testFile);
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foreach ($sourceFiles as $sourceFile) {
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$graph->link($testFile, $sourceFile);
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}
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}
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foreach (self::TESTS as $testFile => $descriptions) {
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foreach ($descriptions as $description) {
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$failed = in_array($description, $failing, true);
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$graph->setResult(
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$branch,
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self::testId($testFile, $description),
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$failed ? 7 : 0,
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$failed ? 'cached failure' : '',
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0.05,
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1,
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$testFile,
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);
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}
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}
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$json = $graph->encode();
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if ($json === null) {
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throw new RuntimeException('Unable to encode the seeded graph.');
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}
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if (! $this->state()->write(Tia::KEY_GRAPH, $json)) {
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throw new RuntimeException('Unable to persist the seeded graph.');
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}
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$sentinel ? $this->sentinel() : $this->snapshot();
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}
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/**
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* The id PHPUnit reports for a test in the fixture suite.
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*
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* Mirrors how Pest names generated test classes
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* ({@see TestCaseFactory}): a wrong id here shows up as
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* `0 replayed`, which every scenario asserts against.
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*/
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public static function testId(string $testFile, string $description): string
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{
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$basename = basename($testFile, '.php');
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$dotPosition = strpos($basename, '.');
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if ($dotPosition !== false) {
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$basename = substr($basename, 0, $dotPosition);
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}
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$relative = dirname(ucfirst($testFile)).DIRECTORY_SEPARATOR.$basename;
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return 'P\\'.str_replace(DIRECTORY_SEPARATOR, '\\', $relative).'::'.Str::evaluable($description);
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}
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/**
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* Falsifies every cached value, so the next {@see self::delta()} can tell
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* "wrote the same values back" from "wrote nothing".
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*
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* `assertions` is only ever falsified where it is already non-zero: risky,
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* skipped and incomplete statuses are *derived* from "performed no
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* assertions", so patching those would rewrite the status on replay and
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* destroy the very discriminator this exists to provide.
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*/
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public function sentinel(): void
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{
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$graph = $this->graph();
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if ($graph === null) {
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throw new RuntimeException('There is no graph to sentinel.');
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}
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foreach ($graph['baselines'] ?? [] as $branch => $baseline) {
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foreach (array_keys($baseline['results'] ?? []) as $testId) {
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$graph['baselines'][$branch]['results'][$testId]['time'] = 9.999;
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if ((int) ($baseline['results'][$testId]['assertions'] ?? 0) > 0) {
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$graph['baselines'][$branch]['results'][$testId]['assertions'] = 42;
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}
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}
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}
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$this->state()->write(Tia::KEY_GRAPH, (string) json_encode($graph, JSON_UNESCAPED_SLASHES));
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$this->snapshot();
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}
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||||
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||||
/**
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||||
* The decoded graph, or `null` when there is none.
|
||||
*
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||||
* @return array<string, mixed>|null
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||||
*/
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||||
public function graph(): ?array
|
||||
{
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||||
$json = $this->state()->read(Tia::KEY_GRAPH);
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||||
|
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if ($json === null) {
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return null;
|
||||
}
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||||
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||||
$graph = json_decode($json, true);
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||||
|
||||
return is_array($graph) ? $graph : null;
|
||||
}
|
||||
|
||||
/**
|
||||
* @return array<int, string>
|
||||
*/
|
||||
public function branchKeys(): array
|
||||
{
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||||
$baselines = $this->graph()['baselines'] ?? [];
|
||||
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||||
return is_array($baselines) ? array_keys($baselines) : [];
|
||||
}
|
||||
|
||||
public function graphDir(): string
|
||||
{
|
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return $this->withHome(fn (): string => Storage::tempDir($this->graphRoot));
|
||||
}
|
||||
|
||||
public function graphExists(): bool
|
||||
{
|
||||
return is_file($this->graphDir().DIRECTORY_SEPARATOR.Tia::KEY_GRAPH);
|
||||
}
|
||||
|
||||
/**
|
||||
* Remembers the graph as it stands now.
|
||||
*/
|
||||
public function snapshot(): void
|
||||
{
|
||||
$this->snapshot = $this->graph();
|
||||
}
|
||||
|
||||
/**
|
||||
* What has happened to the graph since the last snapshot.
|
||||
*/
|
||||
public function delta(): GraphDelta
|
||||
{
|
||||
return new GraphDelta($this->snapshot, $this->graph());
|
||||
}
|
||||
|
||||
/**
|
||||
* Writes the `vendor` a composer install would have produced.
|
||||
*
|
||||
* Pest is mirrored in at `vendor/pestphp/pest` rather than pointed at,
|
||||
* because Pest locates things from where its own files sit:
|
||||
* `bin/pest` finds the project root by walking up from the autoloader it
|
||||
* loads, and a parallel run picks its worker binary — and with it the
|
||||
* worker's project root — from the directory the runner class was loaded
|
||||
* from. Deferring to the repository's copy would resolve both back to the
|
||||
* Pest repository, and every scenario would quietly measure that instead.
|
||||
*
|
||||
* Hardlinked where the filesystem allows it, so the mirror costs almost
|
||||
* nothing and can never drift from the working tree.
|
||||
*/
|
||||
public function scaffoldVendor(string $directory): void
|
||||
{
|
||||
$pestRoot = dirname(__DIR__, 3);
|
||||
$pest = $directory.'/vendor/pestphp/pest';
|
||||
|
||||
// `overrides`, `resources` and `stubs` come along because Pest loads
|
||||
// them relative to `src` — the same list `BootExcludeList` walks.
|
||||
foreach (['src', 'overrides', 'resources', 'stubs'] as $tree) {
|
||||
self::mirror($pestRoot.'/'.$tree, $pest.'/'.$tree);
|
||||
}
|
||||
|
||||
foreach (['pest', 'worker.php'] as $binary) {
|
||||
self::mirror($pestRoot.'/bin/'.$binary, $pest.'/bin/'.$binary);
|
||||
}
|
||||
|
||||
self::mirror($pestRoot.'/composer.json', $pest.'/composer.json');
|
||||
|
||||
// Pest's own autoloader, with the mirrored copy taking precedence: the
|
||||
// repository's `vendor` supplies PHPUnit, Symfony and the plugin
|
||||
// packages, none of which care where they are loaded from.
|
||||
file_put_contents($directory.'/vendor/autoload.php', sprintf(
|
||||
"<?php\n\n\$loader = require %s;\n\$loader->addPsr4('Pest\\\\', __DIR__.'/pestphp/pest/src', true);\n\nreturn \$loader;\n",
|
||||
var_export($pestRoot.'/vendor/autoload.php', true),
|
||||
));
|
||||
|
||||
// Invoking the binary directly skips composer's bin proxy, which is
|
||||
// what would otherwise define `$GLOBALS['_composer_bin_dir']`. Without
|
||||
// it `Pest\Plugin\Loader` looks for `vendor/bin/../pest-plugins.json`
|
||||
// relative to the working directory — so that is where the plugin list
|
||||
// goes, and mirroring the repository's keeps it in step with
|
||||
// composer.json. `vendor/bin` has to exist for the `..` in that path to
|
||||
// resolve, empty though it is.
|
||||
if (! is_dir($directory.'/vendor/bin') && ! @mkdir($directory.'/vendor/bin', 0755, true)) {
|
||||
throw new RuntimeException(sprintf('Unable to create [%s].', $directory.'/vendor/bin'));
|
||||
}
|
||||
|
||||
self::mirror($pestRoot.'/vendor/pest-plugins.json', $directory.'/vendor/pest-plugins.json');
|
||||
}
|
||||
|
||||
public function destroy(): void
|
||||
{
|
||||
foreach ([...$this->extraPaths, $this->path] as $path) {
|
||||
$this->remove($path);
|
||||
}
|
||||
}
|
||||
|
||||
private function home(): string
|
||||
{
|
||||
return $this->path.DIRECTORY_SEPARATOR.'.home';
|
||||
}
|
||||
|
||||
private function state(): FileState
|
||||
{
|
||||
return new FileState($this->graphDir());
|
||||
}
|
||||
|
||||
/**
|
||||
* `Storage` reads `HOME` from the environment, so the graph lands inside the
|
||||
* throwaway project instead of the developer's real `~/.pest`.
|
||||
*
|
||||
* @template TReturn
|
||||
*
|
||||
* @param callable(): TReturn $callback
|
||||
* @return TReturn
|
||||
*/
|
||||
private function withHome(callable $callback): mixed
|
||||
{
|
||||
$original = getenv('HOME');
|
||||
|
||||
putenv('HOME='.$this->home());
|
||||
|
||||
try {
|
||||
return $callback();
|
||||
} finally {
|
||||
putenv($original === false ? 'HOME' : 'HOME='.$original);
|
||||
}
|
||||
}
|
||||
|
||||
private static function scaffold(?string $overlay): self
|
||||
{
|
||||
$path = sys_get_temp_dir().DIRECTORY_SEPARATOR.'pest-tia-'.bin2hex(random_bytes(8));
|
||||
|
||||
if (! @mkdir($path, 0755, true) && ! is_dir($path)) {
|
||||
throw new RuntimeException(sprintf('Unable to create [%s].', $path));
|
||||
}
|
||||
|
||||
// Realpathed because Pest realpaths its own project root, and macOS
|
||||
// hands out a symlinked temp directory.
|
||||
$real = realpath($path);
|
||||
|
||||
$project = new self($real === false ? $path : $real);
|
||||
|
||||
self::$created[] = $project;
|
||||
|
||||
self::copy(__DIR__.'/app', $project->path);
|
||||
|
||||
if ($overlay !== null) {
|
||||
self::copy(__DIR__.'/overlays/'.$overlay, $project->path);
|
||||
}
|
||||
|
||||
// `ChangedFiles` asks git what changed, so anything the scaffold writes
|
||||
// but the project does not own has to be invisible to it.
|
||||
$project->write('.gitignore', implode("\n", ['/vendor/', '/.home/', '/.phpunit.cache/', '']));
|
||||
|
||||
$project->scaffoldVendor($project->path);
|
||||
@mkdir($project->home(), 0755, true);
|
||||
|
||||
return $project;
|
||||
}
|
||||
|
||||
/**
|
||||
* Mirrors a file or directory, hardlinking where the filesystem allows it
|
||||
* and copying where it does not.
|
||||
*/
|
||||
private static function mirror(string $from, string $to): void
|
||||
{
|
||||
if (is_dir($from)) {
|
||||
foreach (self::contentsOf($from) as $path) {
|
||||
self::mirror($path->getPathname(), $to.DIRECTORY_SEPARATOR.substr($path->getPathname(), strlen($from) + 1));
|
||||
}
|
||||
|
||||
return;
|
||||
}
|
||||
|
||||
$directory = dirname($to);
|
||||
|
||||
if (! is_dir($directory) && ! @mkdir($directory, 0755, true) && ! is_dir($directory)) {
|
||||
throw new RuntimeException(sprintf('Unable to create [%s].', $directory));
|
||||
}
|
||||
|
||||
if (@link($from, $to) || @copy($from, $to)) {
|
||||
return;
|
||||
}
|
||||
|
||||
throw new RuntimeException(sprintf('Unable to mirror [%s] into [%s].', $from, $to));
|
||||
}
|
||||
|
||||
/**
|
||||
* @return iterable<\SplFileInfo>
|
||||
*/
|
||||
private static function contentsOf(string $directory): iterable
|
||||
{
|
||||
$paths = new RecursiveIteratorIterator(
|
||||
new RecursiveDirectoryIterator($directory, FilesystemIterator::SKIP_DOTS),
|
||||
RecursiveIteratorIterator::SELF_FIRST,
|
||||
);
|
||||
|
||||
foreach ($paths as $path) {
|
||||
if (! $path->isDir()) {
|
||||
yield $path;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
private static function copy(string $from, string $to): void
|
||||
{
|
||||
$paths = new RecursiveIteratorIterator(
|
||||
new RecursiveDirectoryIterator($from, FilesystemIterator::SKIP_DOTS),
|
||||
RecursiveIteratorIterator::SELF_FIRST,
|
||||
);
|
||||
|
||||
foreach ($paths as $path) {
|
||||
$target = $to.DIRECTORY_SEPARATOR.substr($path->getPathname(), strlen($from) + 1);
|
||||
|
||||
if ($path->isDir()) {
|
||||
if (! is_dir($target) && ! @mkdir($target, 0755, true) && ! is_dir($target)) {
|
||||
throw new RuntimeException(sprintf('Unable to create [%s].', $target));
|
||||
}
|
||||
|
||||
continue;
|
||||
}
|
||||
|
||||
if (! is_dir(dirname($target)) && ! @mkdir(dirname($target), 0755, true) && ! is_dir(dirname($target))) {
|
||||
throw new RuntimeException(sprintf('Unable to create [%s].', dirname($target)));
|
||||
}
|
||||
|
||||
if (! @copy($path->getPathname(), $target)) {
|
||||
throw new RuntimeException(sprintf('Unable to copy [%s].', $path->getPathname()));
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
private function remove(string $path): void
|
||||
{
|
||||
if (! is_dir($path)) {
|
||||
return;
|
||||
}
|
||||
|
||||
$paths = new RecursiveIteratorIterator(
|
||||
new RecursiveDirectoryIterator($path, FilesystemIterator::SKIP_DOTS),
|
||||
RecursiveIteratorIterator::CHILD_FIRST,
|
||||
);
|
||||
|
||||
foreach ($paths as $entry) {
|
||||
$entry->isDir() && ! $entry->isLink() ? @rmdir($entry->getPathname()) : @unlink($entry->getPathname());
|
||||
}
|
||||
|
||||
@rmdir($path);
|
||||
}
|
||||
}
|
||||
Reference in New Issue
Block a user