BooleanChecker for check concrete boolean value (#11)

src/Bootloader/ValidatorBootloader.php

@@ -81,6 +81,7 @@ private function initDefaultConfig(TokenizerBootloader $tokenizer): void
                     'image'    => Checker\ImageChecker::class,
                     'datetime' => Checker\DatetimeChecker::class,
                     'array'    => Checker\ArrayChecker::class,
+                    'boolean'  => Checker\BooleanChecker::class,
                 ],
 
                 // Enable/disable validation conditions

src/Checker/BooleanChecker.php

@@ -0,0 +1,26 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Spiral\Validator\Checker;
+
+use Spiral\Core\Container\SingletonInterface;
+use Spiral\Validator\AbstractChecker;
+
+final class BooleanChecker extends AbstractChecker implements SingletonInterface
+{
+    public const MESSAGES = [
+        'isTrue' => '[[Should be true.]]',
+        'isFalse' => '[[Should be false.]]',
+    ];
+
+    public function isTrue(mixed $value): bool
+    {
+        return true === $value;
+    }
+
+    public function isFalse(mixed $value): bool
+    {
+        return false === $value;
+    }
+}

tests/src/Functional/Bootloader/ValidatorBootloaderTest.php

@@ -54,6 +54,7 @@ public function dataHasCheckerByDefault(): \Traversable
         yield ['image'];
         yield ['datetime'];
         yield ['array'];
+        yield ['boolean'];
     }
 
     public function dataHasConditionByDefault(): \Traversable

tests/src/Unit/Checkers/BooleanCheckerTest.php

@@ -0,0 +1,57 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Spiral\Validator\Tests\Unit\Checkers;
+
+use Spiral\Validator\Checker\BooleanChecker;
+use Spiral\Validator\Tests\Unit\BaseTest;
+
+final class BooleanCheckerTest extends BaseTest
+{
+    /**
+     * @dataProvider dataIsTrue
+     */
+    public function testIsAssoc(mixed $value, bool $expectedResult): void
+    {
+        $checker = new BooleanChecker();
+        self::assertSame($expectedResult, $checker->isTrue($value));
+    }
+
+    public function dataIsTrue(): iterable
+    {
+        yield [true, true];
+        yield [false, false];
+        // not boolean values
+        yield [[], false];
+        yield ['', false];
+        yield [1, false];
+        yield [2.0, false];
+        yield ['foo', false];
+        yield [null, false];
+        yield [new \stdClass(), false];
+    }
+
+    /**
+     * @dataProvider dataIsFalse
+     */
+    public function testIsFalse(mixed $value, bool $expectedResult): void
+    {
+        $checker = new BooleanChecker();
+        self::assertSame($expectedResult, $checker->isFalse($value));
+    }
+
+    public function dataIsFalse(): iterable
+    {
+        yield [true, false];
+        yield [false, true];
+        // not boolean values
+        yield [[], false];
+        yield ['', false];
+        yield [1, false];
+        yield [2.0, false];
+        yield ['foo', false];
+        yield [null, false];
+        yield [new \stdClass(), false];
+    }
+}