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Edit File: TestSuite.php

<?php declare(strict_types=1);
/*
 * This file is part of PHPUnit.
 *
 * (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 PHPUnit\Framework;

use const PHP_EOL;
use function array_keys;
use function array_map;
use function array_pop;
use function array_reverse;
use function assert;
use function call_user_func;
use function class_exists;
use function count;
use function implode;
use function is_callable;
use function is_file;
use function is_subclass_of;
use function sprintf;
use function str_ends_with;
use function str_starts_with;
use function trim;
use Iterator;
use IteratorAggregate;
use PHPUnit\Event;
use PHPUnit\Event\Code\TestMethod;
use PHPUnit\Event\NoPreviousThrowableException;
use PHPUnit\Metadata\Api\Dependencies;
use PHPUnit\Metadata\Api\Groups;
use PHPUnit\Metadata\Api\HookMethods;
use PHPUnit\Metadata\Api\Requirements;
use PHPUnit\Metadata\MetadataCollection;
use PHPUnit\Runner\Exception as RunnerException;
use PHPUnit\Runner\Filter\Factory;
use PHPUnit\Runner\PhptTestCase;
use PHPUnit\Runner\TestSuiteLoader;
use PHPUnit\TestRunner\TestResult\Facade as TestResultFacade;
use PHPUnit\Util\Filter;
use PHPUnit\Util\Reflection;
use PHPUnit\Util\Test as TestUtil;
use ReflectionClass;
use ReflectionMethod;
use SebastianBergmann\CodeCoverage\InvalidArgumentException;
use SebastianBergmann\CodeCoverage\UnintentionallyCoveredCodeException;
use Throwable;

/**
 * @template-implements IteratorAggregate<int, Test>
 *
 * @no-named-arguments Parameter names are not covered by the backward compatibility promise for PHPUnit
 *
 * @internal This class is not covered by the backward compatibility promise for PHPUnit
 */
class TestSuite implements IteratorAggregate, Reorderable, SelfDescribing, Test
{
    /**
     * @psalm-var non-empty-string
     */
    private string $name;

/**
     * @psalm-var array<string,list<Test>>
     */
    private array $groups = [];

/**
     * @psalm-var ?list<ExecutionOrderDependency>
     */
    private ?array $requiredTests = null;

/**
     * @psalm-var list<Test>
     */
    private array $tests = [];

/**
     * @psalm-var ?list<ExecutionOrderDependency>
     */
    private ?array $providedTests    = null;
    private ?Factory $iteratorFilter = null;
    private bool $wasRun             = false;

/**
     * @psalm-param non-empty-string $name
     */
    public static function empty(string $name): static
    {
        return new static($name);
    }

/**
     * @psalm-param class-string $className
     */
    public static function fromClassName(string $className): static
    {
        assert(class_exists($className));

$class = new ReflectionClass($className);

return static::fromClassReflector($class);
    }

public static function fromClassReflector(ReflectionClass $class): static
    {
        $testSuite = new static($class->getName());

$constructor = $class->getConstructor();

if ($constructor !== null && !$constructor->isPublic()) {
            Event\Facade::emitter()->testRunnerTriggeredPhpunitWarning(
                sprintf(
                    'Class "%s" has no public constructor.',
                    $class->getName(),
                ),
            );

return $testSuite;
        }

foreach (Reflection::publicMethodsInTestClass($class) as $method) {
            if ($method->getDeclaringClass()->getName() === Assert::class) {
                continue;
            }

if ($method->getDeclaringClass()->getName() === TestCase::class) {
                continue;
            }

if (!TestUtil::isTestMethod($method)) {
                continue;
            }

$testSuite->addTestMethod($class, $method);
        }

if ($testSuite->isEmpty()) {
            Event\Facade::emitter()->testRunnerTriggeredPhpunitWarning(
                sprintf(
                    'No tests found in class "%s".',
                    $class->getName(),
                ),
            );
        }

return $testSuite;
    }

/**
     * @psalm-param non-empty-string $name
     */
    final private function __construct(string $name)
    {
        $this->name = $name;
    }

/**
     * Returns a string representation of the test suite.
     */
    public function toString(): string
    {
        return $this->name();
    }

/**
     * Adds a test to the suite.
     */
    public function addTest(Test $test, array $groups = []): void
    {
        $class = new ReflectionClass($test);

if ($class->isAbstract()) {
            return;
        }

$this->tests[] = $test;
        $this->clearCaches();

if ($test instanceof self && empty($groups)) {
            $groups = $test->groups();
        }

if ($this->containsOnlyVirtualGroups($groups)) {
            $groups[] = 'default';
        }

foreach ($groups as $group) {
            if (!isset($this->groups[$group])) {
                $this->groups[$group] = [$test];
            } else {
                $this->groups[$group][] = $test;
            }
        }

if ($test instanceof TestCase) {
            $test->setGroups($groups);
        }
    }

/**
     * Adds the tests from the given class to the suite.
     *
     * @throws Exception
     */
    public function addTestSuite(ReflectionClass $testClass): void
    {
        if ($testClass->isAbstract()) {
            throw new Exception(
                sprintf(
                    'Class %s is abstract',
                    $testClass->getName(),
                ),
            );
        }

if (!$testClass->isSubclassOf(TestCase::class)) {
            throw new Exception(
                sprintf(
                    'Class %s is not a subclass of %s',
                    $testClass->getName(),
                    TestCase::class,
                ),
            );
        }

$this->addTest(self::fromClassReflector($testClass));
    }

/**
     * Wraps both <code>addTest()</code> and <code>addTestSuite</code>
     * as well as the separate import statements for the user's convenience.
     *
     * If the named file cannot be read or there are no new tests that can be
     * added, a <code>PHPUnit\Framework\WarningTestCase</code> will be created instead,
     * leaving the current test run untouched.
     *
     * @throws Exception
     */
    public function addTestFile(string $filename): void
    {
        try {
            if (str_ends_with($filename, '.phpt') && is_file($filename)) {
                $this->addTest(new PhptTestCase($filename));
            } else {
                $this->addTestSuite(
                    (new TestSuiteLoader)->load($filename),
                );
            }
        } catch (RunnerException $e) {
            Event\Facade::emitter()->testRunnerTriggeredPhpunitWarning(
                $e->getMessage(),
            );
        }
    }

/**
     * Wrapper for addTestFile() that adds multiple test files.
     *
     * @throws Exception
     */
    public function addTestFiles(iterable $fileNames): void
    {
        foreach ($fileNames as $filename) {
            $this->addTestFile((string) $filename);
        }
    }

/**
     * Counts the number of test cases that will be run by this test.
     */
    public function count(): int
    {
        $numTests = 0;

foreach ($this as $test) {
            $numTests += count($test);
        }

return $numTests;
    }

public function isEmpty(): bool
    {
        foreach ($this as $test) {
            if (count($test) !== 0) {
                return false;
            }
        }

return true;
    }

/**
     * @psalm-return non-empty-string
     */
    public function name(): string
    {
        return $this->name;
    }

/**
     * Returns the test groups of the suite.
     *
     * @psalm-return list<string>
     */
    public function groups(): array
    {
        return array_map(
            'strval',
            array_keys($this->groups),
        );
    }

public function groupDetails(): array
    {
        return $this->groups;
    }

/**
     * @throws CodeCoverageException
     * @throws Event\RuntimeException
     * @throws Exception
     * @throws InvalidArgumentException
     * @throws NoPreviousThrowableException
     * @throws UnintentionallyCoveredCodeException
     */
    public function run(): void
    {
        if ($this->wasRun) {
            // @codeCoverageIgnoreStart
            throw new Exception('The tests aggregated by this TestSuite were already run');
            // @codeCoverageIgnoreEnd
        }

$this->wasRun = true;

if ($this->isEmpty()) {
            return;
        }

$emitter                       = Event\Facade::emitter();
        $testSuiteValueObjectForEvents = Event\TestSuite\TestSuiteBuilder::from($this);

$emitter->testSuiteStarted($testSuiteValueObjectForEvents);

if (!$this->invokeMethodsBeforeFirstTest($emitter, $testSuiteValueObjectForEvents)) {
            return;
        }

/** @psalm-var list<Test> $tests */
        $tests = [];

foreach ($this as $test) {
            $tests[] = $test;
        }

$tests = array_reverse($tests);

$this->tests  = [];
        $this->groups = [];

while (($test = array_pop($tests)) !== null) {
            if (TestResultFacade::shouldStop()) {
                $emitter->testRunnerExecutionAborted();

break;
            }

$test->run();
        }

$this->invokeMethodsAfterLastTest($emitter);

$emitter->testSuiteFinished($testSuiteValueObjectForEvents);
    }

/**
     * Returns the tests as an enumeration.
     *
     * @psalm-return list<Test>
     */
    public function tests(): array
    {
        return $this->tests;
    }

/**
     * Set tests of the test suite.
     *
     * @psalm-param list<Test> $tests
     */
    public function setTests(array $tests): void
    {
        $this->tests = $tests;
    }

/**
     * Mark the test suite as skipped.
     *
     * @throws SkippedTestSuiteError
     */
    public function markTestSuiteSkipped(string $message = ''): never
    {
        throw new SkippedTestSuiteError($message);
    }

/**
     * Returns an iterator for this test suite.
     */
    public function getIterator(): Iterator
    {
        $iterator = new TestSuiteIterator($this);

if ($this->iteratorFilter !== null) {
            $iterator = $this->iteratorFilter->factory($iterator, $this);
        }

return $iterator;
    }

public function injectFilter(Factory $filter): void
    {
        $this->iteratorFilter = $filter;

foreach ($this as $test) {
            if ($test instanceof self) {
                $test->injectFilter($filter);
            }
        }
    }

/**
     * @psalm-return list<ExecutionOrderDependency>
     */
    public function provides(): array
    {
        if ($this->providedTests === null) {
            $this->providedTests = [];

if (is_callable($this->sortId(), true)) {
                $this->providedTests[] = new ExecutionOrderDependency($this->sortId());
            }

foreach ($this->tests as $test) {
                if (!($test instanceof Reorderable)) {
                    continue;
                }

$this->providedTests = ExecutionOrderDependency::mergeUnique($this->providedTests, $test->provides());
            }
        }

return $this->providedTests;
    }

/**
     * @psalm-return list<ExecutionOrderDependency>
     */
    public function requires(): array
    {
        if ($this->requiredTests === null) {
            $this->requiredTests = [];

foreach ($this->tests as $test) {
                if (!($test instanceof Reorderable)) {
                    continue;
                }

$this->requiredTests = ExecutionOrderDependency::mergeUnique(
                    ExecutionOrderDependency::filterInvalid($this->requiredTests),
                    $test->requires(),
                );
            }

$this->requiredTests = ExecutionOrderDependency::diff($this->requiredTests, $this->provides());
        }

return $this->requiredTests;
    }

public function sortId(): string
    {
        return $this->name() . '::class';
    }

/**
     * @psalm-assert-if-true class-string $this->name
     */
    public function isForTestClass(): bool
    {
        return class_exists($this->name, false) && is_subclass_of($this->name, TestCase::class);
    }

/**
     * @throws Event\TestData\MoreThanOneDataSetFromDataProviderException
     * @throws Exception
     */
    protected function addTestMethod(ReflectionClass $class, ReflectionMethod $method): void
    {
        $className  = $class->getName();
        $methodName = $method->getName();

assert(!empty($methodName));

try {
            $test = (new TestBuilder)->build($class, $methodName);
        } catch (InvalidDataProviderException $e) {
            Event\Facade::emitter()->testTriggeredPhpunitError(
                new TestMethod(
                    $className,
                    $methodName,
                    $class->getFileName(),
                    $method->getStartLine(),
                    Event\Code\TestDoxBuilder::fromClassNameAndMethodName(
                        $className,
                        $methodName,
                    ),
                    MetadataCollection::fromArray([]),
                    Event\TestData\TestDataCollection::fromArray([]),
                ),
                sprintf(
                    "The data provider specified for %s::%s is invalid\n%s",
                    $className,
                    $methodName,
                    $this->throwableToString($e),
                ),
            );

return;
        }

if ($test instanceof TestCase || $test instanceof DataProviderTestSuite) {
            $test->setDependencies(
                Dependencies::dependencies($class->getName(), $methodName),
            );
        }

$this->addTest(
            $test,
            (new Groups)->groups($class->getName(), $methodName),
        );
    }

private function clearCaches(): void
    {
        $this->providedTests = null;
        $this->requiredTests = null;
    }

private function containsOnlyVirtualGroups(array $groups): bool
    {
        foreach ($groups as $group) {
            if (!str_starts_with($group, '__phpunit_')) {
                return false;
            }
        }

return true;
    }

private function methodDoesNotExistOrIsDeclaredInTestCase(string $methodName): bool
    {
        $reflector = new ReflectionClass($this->name);

return !$reflector->hasMethod($methodName) ||
               $reflector->getMethod($methodName)->getDeclaringClass()->getName() === TestCase::class;
    }

/**
     * @throws Exception
     */
    private function throwableToString(Throwable $t): string
    {
        $message = $t->getMessage();

if (empty(trim($message))) {
            $message = '<no message>';
        }

if ($t instanceof InvalidDataProviderException) {
            return sprintf(
                "%s\n%s",
                $message,
                Filter::getFilteredStacktrace($t),
            );
        }

return sprintf(
            "%s: %s\n%s",
            $t::class,
            $message,
            Filter::getFilteredStacktrace($t),
        );
    }

/**
     * @throws Exception
     * @throws NoPreviousThrowableException
     */
    private function invokeMethodsBeforeFirstTest(Event\Emitter $emitter, Event\TestSuite\TestSuite $testSuiteValueObjectForEvents): bool
    {
        if (!$this->isForTestClass()) {
            return true;
        }

$methods         = (new HookMethods)->hookMethods($this->name)['beforeClass'];
        $calledMethods   = [];
        $emitCalledEvent = true;
        $result          = true;

foreach ($methods as $method) {
            if ($this->methodDoesNotExistOrIsDeclaredInTestCase($method)) {
                continue;
            }

$calledMethod = new Event\Code\ClassMethod(
                $this->name,
                $method,
            );

try {
                $missingRequirements = (new Requirements)->requirementsNotSatisfiedFor($this->name, $method);

if ($missingRequirements !== []) {
                    $emitCalledEvent = false;

$this->markTestSuiteSkipped(implode(PHP_EOL, $missingRequirements));
                }

call_user_func([$this->name, $method]);
            } catch (Throwable $t) {
            }

/** @psalm-suppress RedundantCondition */
            if ($emitCalledEvent) {
                $emitter->beforeFirstTestMethodCalled(
                    $this->name,
                    $calledMethod,
                );

$calledMethods[] = $calledMethod;
            }

if (isset($t) && $t instanceof SkippedTest) {
                $emitter->testSuiteSkipped(
                    $testSuiteValueObjectForEvents,
                    $t->getMessage(),
                );

return false;
            }

if (isset($t)) {
                $emitter->beforeFirstTestMethodErrored(
                    $this->name,
                    $calledMethod,
                    Event\Code\ThrowableBuilder::from($t),
                );

$result = false;
            }
        }

if (!empty($calledMethods)) {
            $emitter->beforeFirstTestMethodFinished(
                $this->name,
                ...$calledMethods,
            );
        }

return $result;
    }

private function invokeMethodsAfterLastTest(Event\Emitter $emitter): void
    {
        if (!$this->isForTestClass()) {
            return;
        }

$methods       = (new HookMethods)->hookMethods($this->name)['afterClass'];
        $calledMethods = [];

foreach ($methods as $method) {
            if ($this->methodDoesNotExistOrIsDeclaredInTestCase($method)) {
                continue;
            }

$calledMethod = new Event\Code\ClassMethod(
                $this->name,
                $method,
            );

try {
                call_user_func([$this->name, $method]);
            } catch (Throwable $t) {
            }

$emitter->afterLastTestMethodCalled(
                $this->name,
                $calledMethod,
            );

$calledMethods[] = $calledMethod;

if (isset($t)) {
                $emitter->afterLastTestMethodErrored(
                    $this->name,
                    $calledMethod,
                    Event\Code\ThrowableBuilder::from($t),
                );
            }
        }

if (!empty($calledMethods)) {
            $emitter->afterLastTestMethodFinished(
                $this->name,
                ...$calledMethods,
            );
        }
    }
}