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Add tap for Option and Result

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This commit is contained in:
Daniel J. Summers
2024-07-27 13:03:54 -04:00
parent 193147cfb3
commit 7837f4af17
4 changed files with 72 additions and 0 deletions
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24
tests/ResultTest.php
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@@ -197,4 +197,28 @@ class ResultTest extends TestCase
$value = Result::toOption(Result::Error('file not found'));
$this->assertTrue(Option::isNone($value), 'An "Error" result should map to a "None" option');
}
#[TestDox('Tap succeeds for OK result')]
public function testTapSucceedsForOKResult(): void
{
$value = '';
$original = Result::OK('working');
$tapped = Result::tap(function (Result $it) use (&$value) {
$value = Result::isOK($it) ? 'OK: ' . $it->getOK() : 'Error: ' . $it->getError();
}, $original);
$this->assertEquals('OK: working', $value, 'The tapped function was not called');
$this->assertSame($original, $tapped, 'The same result should have been returned');
}
#[TestDox('Tap succeeds for Error result')]
public function testTapSucceedsForErrorResult(): void
{
$value = '';
$original = Result::Error('failed');
$tapped = Result::tap(function (Result $it) use (&$value) {
$value = Result::isOK($it) ? 'OK: ' . $it->getOK() : 'Error: ' . $it->getError();
}, $original);
$this->assertEquals('Error: failed', $value, 'The tapped function was not called');
$this->assertSame($original, $tapped, 'The same result should have been returned');
}
}