D1631.id4163.diff
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D1631.id4163.diff
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	diff --git a/src/Identifiers/UUID.php b/src/Identifiers/UUID.php
	--- a/src/Identifiers/UUID.php
	+++ b/src/Identifiers/UUID.php
	@@ -5,6 +5,8 @@

	class UUID {

	+ const UUID_REGEXP = "/^[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}$/";
	+
	/**
	* @return string A RFC 4122 compliant v4 UUID
	*/
	@@ -40,4 +42,8 @@
	return str_replace("-", "", self::UUIDv4());
	}

	+ public static function isUUID ($string) : bool {
	+ return (bool)preg_match(self::UUID_REGEXP, $string);
	+ }
	+
	}
	diff --git a/tests/Identifiers/UUIDTest.php b/tests/Identifiers/UUIDTest.php
	--- a/tests/Identifiers/UUIDTest.php
	+++ b/tests/Identifiers/UUIDTest.php
	@@ -36,4 +36,14 @@
	$this->assertNotEquals(UUID::UUIDv4(), UUID::UUIDv4());
	}

	+ public function testIsUUID () : void {
	+ $this->assertTrue(UUID::isUUID("e14d5045-4959-11e8-a2e6-0007cb03f249"));
	+ $this->assertFalse(
	+ UUID::isUUID("e14d5045-4959-11e8-a2e6-0007cb03f249c"),
	+ "The method shouldn't allow arbitrary size strings."
	+ );
	+ $this->assertFalse(UUID::isUUID("d825a90a27e7f161a07161c3a37dce8e"));
	+
	+ }
	+
	}