Fix exception message assertions on PHPUnit 13.2 and later

PhpUnit/ConfigurationValuesAreInvalidConstraint.php

@@ -65,7 +65,7 @@ private function evaluateException(\Exception $exception, $description, $returnR
         }
 
         return $this->createPhpUnitConstraint()
-            ->evaluate($exception, $description, $returnResult);
+            ->evaluate($exception->getMessage(), $description, $returnResult);
     }
 
     private function createPhpUnitConstraint()

Tests/PhpUnit/ConfigurationValuesAreInvalidConstraintTest.php

@@ -6,6 +6,7 @@
 use Matthias\SymfonyConfigTest\Tests\PhpUnit\Fixtures\AlwaysValidConfiguration;
 use Matthias\SymfonyConfigTest\Tests\PhpUnit\Fixtures\ConfigurationWithRequiredValue;
 use PHPUnit\Framework\Attributes\Test;
+use PHPUnit\Framework\ExpectationFailedException;
 use PHPUnit\Framework\TestCase;
 
 class ConfigurationValuesAreInvalidConstraintTest extends TestCase
@@ -82,6 +83,25 @@ public function if_configuration_values_are_invalid_it_matches_when_exception_me
         $this->assertTrue($constraint->evaluate([[]], '', true));
     }
 
+    #[Test]
+    public function the_failure_message_contains_the_actual_exception_message()
+    {
+        $constraint = new ConfigurationValuesAreInvalidConstraint(
+            new ConfigurationWithRequiredValue(),
+            'expected message which will not be part of the actual message'
+        );
+
+        try {
+            $constraint->evaluate([[]]);
+        } catch (ExpectationFailedException $exception) {
+            $this->assertStringContainsString('required_value', $exception->getMessage());
+
+            return;
+        }
+
+        $this->fail('Expected an ExpectationFailedException to be thrown');
+    }
+
     #[Test]
     public function to_string_returns_a_message()
     {