class DataProviderTestSuite

final class DataProviderTestSuite extends TestSuite {
    
    /**
     * @psalm-var list<ExecutionOrderDependency>
     */
    private array $dependencies = [];
    private ?array $providedTests = null;
    
    /**
     * @psalm-param list<ExecutionOrderDependency> $dependencies
     */
    public function setDependencies(array $dependencies) : void {
        $this->dependencies = $dependencies;
        foreach ($this->tests() as $test) {
            if (!$test instanceof TestCase) {
                continue;
            }
            $test->setDependencies($dependencies);
        }
    }
    
    /**
     * @psalm-return list<ExecutionOrderDependency>
     */
    public function provides() : array {
        if ($this->providedTests === null) {
            $this->providedTests = [
                new ExecutionOrderDependency($this->name()),
            ];
        }
        return $this->providedTests;
    }
    
    /**
     * @psalm-return list<ExecutionOrderDependency>
     */
    public function requires() : array {
        // A DataProviderTestSuite does not have to traverse its child tests
        // as these are inherited and cannot reference dataProvider rows directly
        return $this->dependencies;
    }
    
    /**
     * Returns the size of each test created using the data provider(s).
     */
    public function size() : TestSize {
        [
            $className,
            $methodName,
        ] = explode('::', $this->name());
        return (new Groups())->size($className, $methodName);
    }

}