endtoend-test-psl/tests/Psl/Result/SuccessTest.php

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<?php
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declare(strict_types=1);
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namespace Psl\Tests\Result;
use Exception;
use PHPUnit\Framework\TestCase;
use Psl\Fun;
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use Psl\Result\Success;
use Psl\Exception\InvariantViolationException;
use stdClass;
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class SuccessTest extends TestCase
{
public function testIsSucceeded(): void
{
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$wrapper = new Success('hello');
self::assertTrue($wrapper->isSucceeded());
}
public function testIsFailed(): void
{
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$wrapper = new Success('hello');
self::assertFalse($wrapper->isFailed());
}
public function testGetResult(): void
{
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$wrapper = new Success('hello');
self::assertSame('hello', $wrapper->getResult());
}
public function testGetException(): void
{
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$wrapper = new Success('hello');
$this->expectException(InvariantViolationException::class);
$this->expectExceptionMessage('No exception thrown');
$wrapper->getException();
}
public function testProceed(): void
{
$wrapper = new Success('hello');
$actual = $wrapper->proceed(
static fn (string $result): int => 200,
static fn (Exception $exception): int => 404
);
self::assertSame(200, $actual);
}
public function testThenToSuccess(): void
{
$wrapper = new Success('hello');
$actual = $wrapper->then(
Fun\identity(),
Fun\rethrow()
);
self::assertNotSame($wrapper, $actual);
self::assertTrue($actual->isSucceeded());
self::assertSame('hello', $actual->getResult());
}
public function testThenToFailure(): void
{
$exception = new Exception('bar');
$wrapper = new Success('hello');
$actual = $wrapper->then(
static function () use ($exception) {
throw $exception;
},
Fun\rethrow()
);
self::assertFalse($actual->isSucceeded());
self::assertSame($actual->getException(), $exception);
}
}