fixed test case

Author: bupy7

tests/Php71TestCase.php

@@ -20,11 +20,19 @@ protected function tearDown(): void
 
     public static function assertRegExp(string $pattern, string $string, string $message = ''): void
     {
-        self::assertMatchesRegularExpression($pattern, $string, $message);
+        if (method_exists(self::class, 'assertMatchesRegularExpression')) {
+            self::assertMatchesRegularExpression($pattern, $string, $message);
+        } else {
+            parent::assertRegExp($pattern, $string, $message);
+        }
     }
 
     public static function assertNotRegExp(string $pattern, string $string, string $message = ''): void
     {
-        self::assertDoesNotMatchRegularExpression($pattern, $string, $message);
+        if (method_exists(self::class, 'assertDoesNotMatchRegularExpression')) {
+            self::assertDoesNotMatchRegularExpression($pattern, $string, $message);
+        } else {
+            parent::assertNotRegExp($pattern, $string, $message);
+        }
     }
 }