Fix implicit nullable parameters deprecation for PHP 8.4

Author: PhrozenByte

src/Constraint/AbstractCallableThrows.php

@@ -89,8 +89,8 @@ public function __construct(string $className, $message, $code, bool $exactMatch
     protected function fail(
         $other,
         $description,
-        ComparisonFailure $comparisonFailure = null,
-        Throwable $throwable = null
+        ?ComparisonFailure $comparisonFailure = null,
+        ?Throwable $throwable = null
     ): void {
         $failureDescription = sprintf('Failed asserting that %s.', $this->failureDescription($other));
 

tests/TestCase.php

@@ -54,7 +54,7 @@ class TestCase extends \PHPUnit\Framework\TestCase
     public function assertCallableThrows(
         callable $callable,
         string $throwableClassName = Throwable::class,
-        string $throwableMessage = null
+        ?string $throwableMessage = null
     ): void {
         $throwableFailure = '';
         $throwableComparisonFailure = null;
@@ -108,7 +108,7 @@ public function assertCallableThrows(
     public function assertCallableThrowsNot(
         callable $callable,
         string $throwableClassName = Throwable::class,
-        string $throwableMessage = null
+        ?string $throwableMessage = null
     ): void {
         try {
             $callable();

tests/Unit/ThrowableAssertsTraitTest.php

@@ -230,7 +230,7 @@ public function testCachedCallableProxy(): void
     private function mockConstraintInstance(
         string $className,
         array $constructorArguments = [],
-        array $evaluateArguments = null
+        ?array $evaluateArguments = null
     ): MockInterface {
         $instanceMock = Mockery::mock('overload:' . $className, Constraint::class);
 

tests/Utils/InvocableClass.php

@@ -38,7 +38,7 @@ class InvocableClass
      * @param string|null $throwableClassName    the Throwable's class name to thrown when invoked
      * @param mixed       ...$throwableArguments the arguments to pass to the Throwable
      */
-    public function __construct(string $throwableClassName = null, ...$throwableArguments)
+    public function __construct(?string $throwableClassName = null, ...$throwableArguments)
     {
         $this->throwableClassName = $throwableClassName;
         $this->throwableArguments = $throwableArguments;