<?php declare(strict_types=1);
/*
 * This file is part of sebastian/complexity.
 *
 * (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\Complexity;

use function assert;
use function file_get_contents;
use PhpParser\ParserFactory;
use PHPUnit\Framework\Attributes\CoversClass;
use PHPUnit\Framework\Attributes\Medium;
use PHPUnit\Framework\Attributes\UsesClass;
use PHPUnit\Framework\TestCase;

#[CoversClass(Calculator::class)]
#[CoversClass(ComplexityCalculatingVisitor::class)]
#[CoversClass(CyclomaticComplexityCalculatingVisitor::class)]
#[UsesClass(Complexity::class)]
#[UsesClass(ComplexityCollection::class)]
#[UsesClass(ComplexityCollectionIterator::class)]
#[Medium]
final class CalculatorTest extends TestCase
{
    public function testCalculatesCyclomaticComplexityOfClassMethodInSourceFile(): void
    {
        $result = (new Calculator)->calculateForSourceFile(__DIR__ . '/../_fixture/ExampleClass.php')->asArray();

        $this->assertSame('SebastianBergmann\Complexity\TestFixture\ExampleClass::method', $result[0]->name());
        $this->assertSame(14, $result[0]->cyclomaticComplexity());
    }

    public function testCalculatesCyclomaticComplexityOfTraitMethodInSourceFile(): void
    {
        $result = (new Calculator)->calculateForSourceFile(__DIR__ . '/../_fixture/ExampleTrait.php')->asArray();

        $this->assertSame('SebastianBergmann\Complexity\TestFixture\ExampleTrait::method', $result[0]->name());
        $this->assertSame(14, $result[0]->cyclomaticComplexity());
    }

    public function testCalculatesCyclomaticComplexityOfFunctionInSourceFile(): void
    {
        $result = (new Calculator)->calculateForSourceFile(__DIR__ . '/../_fixture/example_function.php')->asArray();

        $this->assertSame('SebastianBergmann\Complexity\TestFixture\example_function', $result[0]->name());
        $this->assertSame(14, $result[0]->cyclomaticComplexity());
    }

    public function testCalculatesCyclomaticComplexityInSourceString(): void
    {
        $result = (new Calculator)->calculateForSourceString(file_get_contents(__DIR__ . '/../_fixture/ExampleClass.php'))->asArray();

        $this->assertSame('SebastianBergmann\Complexity\TestFixture\ExampleClass::method', $result[0]->name());
        $this->assertSame(14, $result[0]->cyclomaticComplexity());
    }

    public function testCalculatesCyclomaticComplexityInAbstractSyntaxTree(): void
    {
        $nodes = (new ParserFactory)->createForHostVersion()->parse(file_get_contents(__DIR__ . '/../_fixture/ExampleClass.php'));

        assert($nodes !== null);

        $result = (new Calculator)->calculateForAbstractSyntaxTree($nodes)->asArray();

        $this->assertSame('SebastianBergmann\Complexity\TestFixture\ExampleClass::method', $result[0]->name());
        $this->assertSame(14, $result[0]->cyclomaticComplexity());
    }
}