fix: fix deprecation message for Factories trait (#806)

Author: nikophil

src/Exception/FactoriesTraitNotUsed.php

@@ -57,8 +57,8 @@ public static function throwIfClassDoesNotHaveFactoriesTrait(string $class): voi
             trigger_deprecation(
                 'zenstruck/foundry',
                 '2.4',
-                'In order to use Foundry, you must use the trait "%s" in your "%s" tests. This will throw an exception in 3.0.',
-                KernelTestCase::class,
+                'In order to use Foundry correctly, you must use the trait "%s" in your "%s" tests. This will throw an exception in 3.0.',
+                Factories::class,
                 $class
             );
         }

tests/Integration/ForceFactoriesTraitUsage/KernelTestCaseWithoutFactoriesTraitTestCase.php

@@ -44,7 +44,7 @@ public function not_using_foundry_should_not_throw_even_when_container_is_used()
     #[IgnoreDeprecations]
     public function using_foundry_without_trait_should_throw(): void
     {
-        $this->expectUserDeprecationMessageMatches('/In order to use Foundry, you must use the trait/');
+        $this->assertDeprecation();
 
         Object1Factory::createOne();
     }
@@ -53,7 +53,7 @@ public function using_foundry_without_trait_should_throw(): void
     #[IgnoreDeprecations]
     public function using_foundry_without_trait_should_throw_even_when_kernel_is_booted(): void
     {
-        $this->expectUserDeprecationMessageMatches('/In order to use Foundry, you must use the trait/');
+        $this->assertDeprecation();
 
         self::getContainer()->get('.zenstruck_foundry.configuration');
 
@@ -65,7 +65,7 @@ public function using_foundry_without_trait_should_throw_even_when_kernel_is_boo
     #[IgnoreDeprecations]
     public function using_a_story_without_factories_trait_should_throw(): void
     {
-        $this->expectUserDeprecationMessageMatches('/In order to use Foundry, you must use the trait/');
+        $this->assertDeprecation();
 
         ObjectStory::load();
     }
@@ -88,4 +88,9 @@ public static function _shutdownFoundry(): void
     {
         Configuration::shutdown();
     }
+
+    private function assertDeprecation(): void
+    {
+        $this->expectUserDeprecationMessageMatches('/In order to use Foundry correctly, you must use the trait "Zenstruck\\\\Foundry\\\\Test\\\\Factories/');
+    }
 }