diff --git a/tests/BinaryOperationTest.php b/tests/BinaryOperationTest.php
index fef58e767..cefc8ccb3 100644
--- a/tests/BinaryOperationTest.php
+++ b/tests/BinaryOperationTest.php
@@ -253,7 +253,7 @@ class BinaryOperationTest extends TestCase
                 '<?php
                     $a = gmp_init(2);
                     $b = "a" + $a;',
-                'error_message' => 'InvalidOperand - src/somefile.php:3 - Cannot add GMP to non-numeric type',
+                'error_message' => 'InvalidOperand - src' . DIRECTORY_SEPARATOR . 'somefile.php:3 - Cannot add GMP to non-numeric type',
             ],
             'stringIncrement' => [
                 '<?php
diff --git a/tests/MagicMethodAnnotationTest.php b/tests/MagicMethodAnnotationTest.php
index 334b1e9e7..de2936b04 100644
--- a/tests/MagicMethodAnnotationTest.php
+++ b/tests/MagicMethodAnnotationTest.php
@@ -434,7 +434,7 @@ class MagicMethodAnnotationTest extends TestCase
                     $child = new Child();
                     $child->getString();
                     $child->foo();',
-                'error_message' => 'UndefinedMethod - src/somefile.php:14 - Method Child::foo does not exist',
+                'error_message' => 'UndefinedMethod - src' . DIRECTORY_SEPARATOR . 'somefile.php:14 - Method Child::foo does not exist',
             ],
             'annotationInvalidArg' => [
                 '<?php
diff --git a/tests/MethodCallTest.php b/tests/MethodCallTest.php
index f329d2d53..6e7168b43 100644
--- a/tests/MethodCallTest.php
+++ b/tests/MethodCallTest.php
@@ -503,7 +503,7 @@ class MethodCallTest extends TestCase
                     function f($p): void {
                         $p->zugzug();
                     }',
-                'error_message' => 'UndefinedInterfaceMethod - src/somefile.php:7 - Method (B&A)::zugzug does not exist'
+                'error_message' => 'UndefinedInterfaceMethod - src' . DIRECTORY_SEPARATOR . 'somefile.php:7 - Method (B&A)::zugzug does not exist'
             ],
             'noInstanceCallAsStatic' => [
                 '<?php
diff --git a/tests/MethodSignatureTest.php b/tests/MethodSignatureTest.php
index d9db91c93..1d7cacd72 100644
--- a/tests/MethodSignatureTest.php
+++ b/tests/MethodSignatureTest.php
@@ -615,7 +615,7 @@ class MethodSignatureTest extends TestCase
                     class C implements I {
                         public function foo(bool $b): void {}
                     }',
-                'error_message' => 'MethodSignatureMismatch - src/somefile.php:6 - Method C::foo has more required',
+                'error_message' => 'MethodSignatureMismatch - src' . DIRECTORY_SEPARATOR . 'somefile.php:6 - Method C::foo has more required',
             ],
             'inheritParamTypes' => [
                 '<?php
diff --git a/tests/SwitchTypeTest.php b/tests/SwitchTypeTest.php
index 45a3a8aa2..ef3f6941c 100644
--- a/tests/SwitchTypeTest.php
+++ b/tests/SwitchTypeTest.php
@@ -700,7 +700,7 @@ class SwitchTypeTest extends TestCase
                         case 0:
                             echo "I never get here";
                     }',
-                'error_message' => 'ParadoxicalCondition - src/somefile.php:7',
+                'error_message' => 'ParadoxicalCondition - src' . DIRECTORY_SEPARATOR . 'somefile.php:7',
             ],
             'impossibleCaseValue' => [
                 '<?php
@@ -716,7 +716,7 @@ class SwitchTypeTest extends TestCase
                         case "c":
                             echo "impossible";
                     }',
-                'error_message' => 'TypeDoesNotContainType - src/somefile.php:11',
+                'error_message' => 'TypeDoesNotContainType - src' . DIRECTORY_SEPARATOR . 'somefile.php:11',
             ],
             'impossibleCaseDefault' => [
                 '<?php
@@ -732,7 +732,7 @@ class SwitchTypeTest extends TestCase
                         default:
                             echo "impossible";
                     }',
-                'error_message' => 'ParadoxicalCondition - src/somefile.php:11',
+                'error_message' => 'ParadoxicalCondition - src' . DIRECTORY_SEPARATOR . 'somefile.php:11',
             ],
             'breakWithoutSettingVar' => [
                 '<?php
@@ -761,7 +761,7 @@ class SwitchTypeTest extends TestCase
                                 break;
                         }
                     }',
-                'error_message' => 'TypeDoesNotContainType - src/somefile.php:5 - string(InvalidArgumentException) cannot be identical to class-string',
+                'error_message' => 'TypeDoesNotContainType - src' . DIRECTORY_SEPARATOR . 'somefile.php:5 - string(InvalidArgumentException) cannot be identical to class-string',
             ],
         ];
     }
diff --git a/tests/Template/TemplateExtendsTest.php b/tests/Template/TemplateExtendsTest.php
index d705fb643..ef3c85541 100644
--- a/tests/Template/TemplateExtendsTest.php
+++ b/tests/Template/TemplateExtendsTest.php
@@ -1180,7 +1180,7 @@ class TemplateExtendsTest extends TestCase
                             return new Foo();
                         }
                     }',
-                'error_message' => 'ImplementedReturnTypeMismatch - src/somefile.php:29 - The return type \'A\Bar\' for',
+                'error_message' => 'ImplementedReturnTypeMismatch - src' . DIRECTORY_SEPARATOR . 'somefile.php:29 - The return type \'A\Bar\' for',
             ],
             'extendTemplateAndDoesNotOverrideWithWrongArg' => [
                 '<?php
diff --git a/tests/Template/TemplateTest.php b/tests/Template/TemplateTest.php
index 47088c256..038a235c9 100644
--- a/tests/Template/TemplateTest.php
+++ b/tests/Template/TemplateTest.php
@@ -1771,7 +1771,7 @@ class TemplateTest extends TestCase
                             type($closure);
                         }
                     }',
-                'error_message' => 'InvalidArgument - src/somefile.php:20 - Argument 1 of type expects string, callable(State):(T as mixed)&Foo provided',
+                'error_message' => 'InvalidArgument - src' . DIRECTORY_SEPARATOR . 'somefile.php:20 - Argument 1 of type expects string, callable(State):(T as mixed)&Foo provided',
             ],
             'classTemplateAsIncorrectClass' => [
                 '<?php