diff --git a/composer.json b/composer.json
index 51ad669..b86fdc5 100644
--- a/composer.json
+++ b/composer.json
@@ -38,8 +38,8 @@
 	},
 	"scripts": {
 		"lint": "vendor/bin/parallel-lint --colors src/ tests/",
-		"lint-7.x": "vendor/bin/parallel-lint --colors src/ tests/ --exclude tests/libs/TypesEverywhere.php --exclude tests/src/disallowed/functionCallsNamedParams.php --exclude tests/src/disallowed-allow/functionCallsNamedParams.php --exclude tests/src/disallowed/attributeUsages.php --exclude tests/src/disallowed-allow/attributeUsages.php",
-		"lint-8.0": "vendor/bin/parallel-lint --colors src/ tests/ --exclude tests/libs/TypesEverywhere.php",
+		"lint-7.x": "vendor/bin/parallel-lint --colors src/ tests/ --exclude tests/src/TypesEverywhere.php --exclude tests/src/disallowed/functionCallsNamedParams.php --exclude tests/src/disallowed-allow/functionCallsNamedParams.php --exclude tests/src/disallowed/attributeUsages.php --exclude tests/src/disallowed-allow/attributeUsages.php",
+		"lint-8.0": "vendor/bin/parallel-lint --colors src/ tests/ --exclude tests/src/TypesEverywhere.php",
 		"lint-neon": "vendor/bin/neon-lint .",
 		"phpcs": "vendor/bin/phpcs src/ tests/",
 		"cs-fix": "vendor/bin/phpcbf src/ tests/",
diff --git a/tests/Calls/FunctionCallsInMultipleNamespacesTest.php b/tests/Calls/FunctionCallsInMultipleNamespacesTest.php
index 6998ef5..7a369d8 100644
--- a/tests/Calls/FunctionCallsInMultipleNamespacesTest.php
+++ b/tests/Calls/FunctionCallsInMultipleNamespacesTest.php
@@ -52,36 +52,36 @@ protected function getRule(): Rule
 	public function testRule(): void
 	{
 		// Based on the configuration above, in this file:
-		$this->analyse([__DIR__ . '/../libs/FunctionInMultipleNamespaces.php'], [
+		$this->analyse([__DIR__ . '/../src/FunctionInMultipleNamespaces.php'], [
 			[
 				// expect this error message:
 				'Calling __() (as alias()) is forbidden, use MyNamespace\__ instead',
 				// on this line:
-				18,
+				20,
 			],
 			[
 				'Calling MyNamespace\__() (as __()) is forbidden, ha ha ha nope',
-				23,
+				26,
 			],
 			[
 				'Calling printf() is forbidden, because reasons',
-				26,
+				30,
 			],
 			[
 				'Calling printf() is forbidden, because reasons',
-				27,
+				31,
 			],
 			[
 				'Calling MyNamespace\__() (as alias()) is forbidden, ha ha ha nope',
-				35,
+				39,
 			],
 			[
 				'Calling printf() is forbidden, because reasons',
-				36,
+				40,
 			],
 			[
 				'Calling printf() is forbidden, because reasons',
-				37,
+				41,
 			],
 		]);
 	}
diff --git a/tests/Usages/AttributeUsagesAllowParamsMultipleTest.php b/tests/Usages/AttributeUsagesAllowParamsMultipleTest.php
index 60723f4..535f2a9 100644
--- a/tests/Usages/AttributeUsagesAllowParamsMultipleTest.php
+++ b/tests/Usages/AttributeUsagesAllowParamsMultipleTest.php
@@ -33,7 +33,7 @@ protected function getRule(): Rule
 						AttributeEntity::class,
 					],
 					'allowIn' => [
-						'../libs/ClassWithAttributesAllow.php',
+						'../src/disallowed-allow/ClassWithAttributesAllow.php',
 					],
 					'allowParamsAnywhereAnyValue' => [
 						[
@@ -57,26 +57,26 @@ protected function getRule(): Rule
 	public function testRule(): void
 	{
 		// Based on the configuration above, in this file:
-		$this->analyse([__DIR__ . '/../libs/ClassWithAttributes.php'], [
+		$this->analyse([__DIR__ . '/../src/disallowed/ClassWithAttributes.php'], [
 			[
 				// expect this error message:
 				'Attribute Attributes\AttributeEntity is forbidden, because reasons',
 				// on this line:
-				10,
+				8,
 			],
 		]);
-		$this->analyse([__DIR__ . '/../libs/ClassWithAttributesAllow.php'], [
+		$this->analyse([__DIR__ . '/../src/disallowed-allow/ClassWithAttributesAllow.php'], [
 			[
 				'Attribute Attributes\AttributeEntity is forbidden, because reasons',
-				10,
+				8,
 			],
 			[
 				'Attribute Attributes\AttributeEntity is forbidden, because reasons',
-				15,
+				12,
 			],
 			[
 				'Attribute Attributes\AttributeEntity is forbidden, because reasons',
-				22,
+				18,
 			],
 		]);
 	}
diff --git a/tests/Usages/AttributeUsagesTest.php b/tests/Usages/AttributeUsagesTest.php
index 148f3b3..c894a8d 100644
--- a/tests/Usages/AttributeUsagesTest.php
+++ b/tests/Usages/AttributeUsagesTest.php
@@ -31,7 +31,7 @@ protected function getRule(): Rule
 						AttributeEntity::class,
 					],
 					'allowIn' => [
-						'../libs/ClassWithAttributesAllow.php',
+						'../src/disallowed-allow/ClassWithAttributesAllow.php',
 					],
 					'allowParamsAnywhereAnyValue' => [
 						[
@@ -48,15 +48,15 @@ protected function getRule(): Rule
 	public function testRule(): void
 	{
 		// Based on the configuration above, in this file:
-		$this->analyse([__DIR__ . '/../libs/ClassWithAttributes.php'], [
+		$this->analyse([__DIR__ . '/../src/disallowed/ClassWithAttributes.php'], [
 			[
 				// expect this error message:
 				'Attribute Attributes\AttributeEntity is forbidden, because reasons',
 				// on this line:
-				10,
+				8,
 			],
 		]);
-		$this->analyse([__DIR__ . '/../libs/ClassWithAttributesAllow.php'], []);
+		$this->analyse([__DIR__ . '/../src/disallowed-allow/ClassWithAttributesAllow.php'], []);
 	}
 
 }
diff --git a/tests/Usages/NamespaceUsagesTypesTest.php b/tests/Usages/NamespaceUsagesTypesTest.php
index b6ebf59..6dc5590 100644
--- a/tests/Usages/NamespaceUsagesTypesTest.php
+++ b/tests/Usages/NamespaceUsagesTypesTest.php
@@ -39,7 +39,7 @@ protected function getRule(): Rule
 	public function testRule(): void
 	{
 		// Based on the configuration above, in this file:
-		$this->analyse([__DIR__ . '/../libs/TypesEverywhere.php'], [
+		$this->analyse([__DIR__ . '/../src/TypesEverywhere.php'], [
 			[
 				// expect this error message:
 				'Namespace Waldo\Quux\Blade is forbidden, do androids dream of electric sheep?',
diff --git a/tests/bootstrap.php b/tests/bootstrap.php
index c4d73df..ab9df8b 100644
--- a/tests/bootstrap.php
+++ b/tests/bootstrap.php
@@ -2,13 +2,10 @@
 declare(strict_types = 1);
 
 require_once __DIR__ . '/../vendor/autoload.php';
-require_once __DIR__ . '/libs/Bar.php';
-require_once __DIR__ . '/libs/Blade.php';
-require_once __DIR__ . '/libs/Constructor.php';
-require_once __DIR__ . '/libs/Functions.php';
-require_once __DIR__ . '/libs/Inheritance.php';
-require_once __DIR__ . '/libs/Royale.php';
-require_once __DIR__ . '/libs/SomeInterface.php';
-require_once __DIR__ . '/libs/Option.php';
-require_once __DIR__ . '/libs/TestTrait.php';
-require_once __DIR__ . '/libs/Traits.php';
+
+$iterator = new RecursiveIteratorIterator(new RecursiveDirectoryIterator(__DIR__ . '/libs', FilesystemIterator::SKIP_DOTS));
+foreach ($iterator as $fileInfo) {
+	if ($fileInfo->getExtension() === 'php') {
+		require_once $fileInfo->getPathname();
+	}
+}
diff --git a/tests/libs/ClassWithAttributes.php b/tests/libs/ClassWithAttributes.php
deleted file mode 100644
index 77bcf4c..0000000
--- a/tests/libs/ClassWithAttributes.php
+++ /dev/null
@@ -1,34 +0,0 @@
-<?php
-declare(strict_types = 1);
-
-namespace libs;
-
-use Attributes\AttributeEntity;
-use Waldo\Quux\Blade;
-
-// disallowed, no $repositoryClass parameter specified
-#[AttributeEntity]
-class ClassWithAttributes
-{
-
-	// disallowed, $repositoryClass present with any value
-	#[AttributeEntity(repositoryClass: UserRepository::class, readOnly: false)]
-	public function hasAvocado(): bool
-	{
-	}
-
-
-	// allowed, $repositoryClass present with any value
-	#[AttributeEntity(UserRepository::class)]
-	public function hasTuna(): bool
-	{
-	}
-
-
-	// allowed, $repositoryClass present with any value
-	#[AttributeEntity(Blade::class)]
-	public function hasKetchup(): bool
-	{
-	}
-
-}
diff --git a/tests/libs/ClassWithAttributesAllow.php b/tests/libs/ClassWithAttributesAllow.php
deleted file mode 100644
index 16d898e..0000000
--- a/tests/libs/ClassWithAttributesAllow.php
+++ /dev/null
@@ -1,34 +0,0 @@
-<?php
-declare(strict_types = 1);
-
-namespace libs;
-
-use Attributes\AttributeEntity;
-use Waldo\Quux\Blade;
-
-// disallowed, no $repositoryClass parameter specified
-#[AttributeEntity]
-class ClassWithAttributesAllow
-{
-
-	// disallowed, $repositoryClass present with any value
-	#[AttributeEntity(repositoryClass: UserRepository::class, readOnly: false)]
-	public function hasAvocado(): bool
-	{
-	}
-
-
-	// allowed, $repositoryClass present with any value
-	#[AttributeEntity(UserRepository::class)]
-	public function hasTuna(): bool
-	{
-	}
-
-
-	// allowed, $repositoryClass present with any value
-	#[AttributeEntity(Blade::class)]
-	public function hasKetchup(): bool
-	{
-	}
-
-}
diff --git a/tests/libs/FunctionInMultipleNamespaces.php b/tests/src/FunctionInMultipleNamespaces.php
similarity index 64%
rename from tests/libs/FunctionInMultipleNamespaces.php
rename to tests/src/FunctionInMultipleNamespaces.php
index 0a86f0e..bf88add 100644
--- a/tests/libs/FunctionInMultipleNamespaces.php
+++ b/tests/src/FunctionInMultipleNamespaces.php
@@ -1,5 +1,5 @@
 <?php
-declare(strict_types=1);
+declare(strict_types = 1);
 
 namespace {
 
@@ -11,18 +11,22 @@ function __(): string
 
 namespace MyNamespace {
 
+	// phpcs:ignore SlevomatCodingStandard.Namespaces.UseSpacing.IncorrectLinesCountAfterLastUse
 	use function __ as alias;
 
+
 	function __(): string
 	{
 		return alias();
 	}
 
+
 	function someOtherFn(): string
 	{
-		return __();  // The __ used here is MyNamespace\__
+		return __(); // The __ used here is MyNamespace\__
 	}
 
+
 	printf('oo');
 	\printf('oo');
 
@@ -37,4 +41,3 @@ function someOtherFn(): string
 	\printf('oo');
 
 }
-
diff --git a/tests/libs/TypesEverywhere.php b/tests/src/TypesEverywhere.php
similarity index 100%
rename from tests/libs/TypesEverywhere.php
rename to tests/src/TypesEverywhere.php
diff --git a/tests/src/disallowed-allow/ClassWithAttributesAllow.php b/tests/src/disallowed-allow/ClassWithAttributesAllow.php
new file mode 100644
index 0000000..d7b022c
--- /dev/null
+++ b/tests/src/disallowed-allow/ClassWithAttributesAllow.php
@@ -0,0 +1,29 @@
+<?php
+declare(strict_types = 1);
+
+namespace Attributes;
+
+use Waldo\Quux\Blade;
+
+#[\Attributes\AttributeEntity] // disallowed, no $repositoryClass parameter specified
+class ClassWithAttributesAllow
+{
+
+	#[\Attributes\AttributeEntity(repositoryClass: \Attributes\UserRepository::class, readOnly: false)] // disallowed, $repositoryClass present with any value
+	public function hasAvocado(): bool
+	{
+	}
+
+
+	#[\Attributes\AttributeEntity(\Attributes\UserRepository::class)] // allowed, $repositoryClass present with any value
+	public function hasTuna(): bool
+	{
+	}
+
+
+	#[\Attributes\AttributeEntity(Blade::class)] // allowed, $repositoryClass present with any value
+	public function hasKetchup(): bool
+	{
+	}
+
+}
diff --git a/tests/src/disallowed/ClassWithAttributes.php b/tests/src/disallowed/ClassWithAttributes.php
new file mode 100644
index 0000000..34cc52c
--- /dev/null
+++ b/tests/src/disallowed/ClassWithAttributes.php
@@ -0,0 +1,29 @@
+<?php
+declare(strict_types = 1);
+
+namespace Attributes;
+
+use Waldo\Quux\Blade;
+
+#[AttributeEntity] // disallowed, no $repositoryClass parameter specified
+class ClassWithAttributes
+{
+
+	#[AttributeEntity(repositoryClass: UserRepository::class, readOnly: false)] // disallowed, $repositoryClass present with any value
+	public function hasAvocado(): bool
+	{
+	}
+
+
+	#[AttributeEntity(UserRepository::class)] // allowed, $repositoryClass present with any value
+	public function hasTuna(): bool
+	{
+	}
+
+
+	#[AttributeEntity(Blade::class)] // allowed, $repositoryClass present with any value
+	public function hasKetchup(): bool
+	{
+	}
+
+}