Add helper-methods to BooleanValue

Author: tvdijen

src/Type/BooleanValue.php

@@ -7,6 +7,10 @@
 use SimpleSAML\XML\Assert\Assert;
 use SimpleSAML\XML\Exception\SchemaViolationException;
 
+use function boolval;
+use function in_array;
+use function strval;
+
 /**
  * @package simplesaml/xml-common
  */
@@ -40,4 +44,27 @@ protected function validateValue(string $value): void
         // Note: value must already be sanitized before validating
         Assert::validBoolean($this->sanitizeValue($value), SchemaViolationException::class);
     }
+
+
+    /**
+     * @param boolean $value
+     * @return static
+     */
+    public static function fromBoolean(bool $value): static
+    {
+        return new static(
+            $value === true ? 'true' : 'false',
+        );
+    }
+
+
+    /**
+     * @return boolean $value
+     */
+    public function toBoolean(): bool
+    {
+        return boolval(
+            in_array($this->getValue(), ['1', 'true']) ? '1' : '0',
+        );
+    }
 }

tests/Type/BooleanValueTest.php

@@ -37,6 +37,20 @@ public function testBoolean(bool $shouldPass, string $boolean): void
     }
 
 
+    /**
+     * Test helpers
+     */
+    public function testHelpers(): void
+    {
+        $x = BooleanValue::fromBoolean(false);
+        $this->assertFalse($x->toBoolean());
+
+        $y = BooleanValue::fromString('1');
+        $this->assertTrue($y->toBoolean());
+    }
+
+
+
     /**
      * @return array<string, array{0: true, 1: string}>
      */