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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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22
tests/OptionTest.php
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@@ -237,4 +237,26 @@ class OptionTest extends TestCase
{
$this->assertEquals('boy howdy', Option::unwrap(Option::Some('boy howdy')), '"Some" should return its value');
}
#[TestDox('Tap succeeds with Some')]
public function testTapSucceedsWithSome(): void
{
$value = '';
$original = Option::Some('testing');
$tapped = Option::tap(
function (Option $it) use (&$value) { $value = Option::isSome($it) ? $it->get() : 'none'; }, $original);
$this->assertEquals('testing', $value, 'The tapped function was not called');
$this->assertSame($original, $tapped, 'The same option should have been returned');
}
#[TestDox('Tap succeeds with None')]
public function testTapSucceedsWithNone(): void
{
$value = '';
$original = Option::None();
$tapped = Option::tap(
function (Option $it) use (&$value) { $value = Option::isSome($it) ? $it->get() : 'none'; }, $original);
$this->assertEquals('none', $value, 'The tapped function was not called');
$this->assertSame($original, $tapped, 'The same option should have been returned');
}
}

24
tests/ResultTest.php
View File

@@ -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');
}
}