Report data providers deprecated usage

composer.json

@@ -7,7 +7,7 @@
 	],
 	"require": {
 		"php": "^7.2 || ^8.0",
-		"phpstan/phpstan": "^1.9.0"
+		"phpstan/phpstan": "^1.9.3"
 	},
 	"conflict": {
 		"phpunit/phpunit": "<7.0"

rules.neon

@@ -12,6 +12,7 @@ services:
 		class: PHPStan\Rules\PHPUnit\DataProviderDeclarationRule
 		arguments:
 			checkFunctionNameCase: %checkFunctionNameCase%
+			deprecationRulesInstalled: %deprecationRulesInstalled%
 	- class: PHPStan\Rules\PHPUnit\NoMissingSpaceInClassAnnotationRule
 	- class: PHPStan\Rules\PHPUnit\NoMissingSpaceInMethodAnnotationRule
 

src/Rules/PHPUnit/DataProviderDeclarationRule.php

@@ -36,15 +36,24 @@ class DataProviderDeclarationRule implements Rule
 	 */
 	private $checkFunctionNameCase;
 
+	/**
+	 * When phpstan-deprecation-rules is installed, it reports deprecated usages.
+	 *
+	 * @var bool
+	 */
+	private $deprecationRulesInstalled;
+
 	public function __construct(
 		DataProviderHelper $dataProviderHelper,
 		FileTypeMapper $fileTypeMapper,
-		bool $checkFunctionNameCase
+		bool $checkFunctionNameCase,
+		bool $deprecationRulesInstalled
 	)
 	{
 		$this->dataProviderHelper = $dataProviderHelper;
 		$this->fileTypeMapper = $fileTypeMapper;
 		$this->checkFunctionNameCase = $checkFunctionNameCase;
+		$this->deprecationRulesInstalled = $deprecationRulesInstalled;
 	}
 
 	public function getNodeType(): string
@@ -80,7 +89,12 @@ public function processNode(Node $node, Scope $scope): array
 		foreach ($annotations as $annotation) {
 			$errors = array_merge(
 				$errors,
-				$this->dataProviderHelper->processDataProvider($scope, $annotation, $this->checkFunctionNameCase)
+				$this->dataProviderHelper->processDataProvider(
+					$scope,
+					$annotation,
+					$this->checkFunctionNameCase,
+					$this->deprecationRulesInstalled
+				)
 			);
 		}
 

src/Rules/PHPUnit/DataProviderHelper.php

@@ -44,7 +44,8 @@ public function getDataProviderAnnotations(?ResolvedPhpDocBlock $phpDoc): array
 	public function processDataProvider(
 		Scope $scope,
 		PhpDocTagNode $phpDocTag,
-		bool $checkFunctionNameCase
+		bool $checkFunctionNameCase,
+		bool $deprecationRulesInstalled
 	): array
 	{
 		$dataProviderName = $this->getDataProviderName($phpDocTag);
@@ -87,6 +88,13 @@ public function processDataProvider(
 			))->build();
 		}
 
+		if ($deprecationRulesInstalled && !$dataProviderMethodReflection->isStatic()) {
+			$errors[] = RuleErrorBuilder::message(sprintf(
+				'@dataProvider %s related method must be static.',
+				$dataProviderName
+			))->build();
+		}
+
 		return $errors;
 	}
 

tests/Rules/PHPUnit/DataProviderDeclarationRuleTest.php

@@ -17,6 +17,7 @@ protected function getRule(): Rule
 		return new DataProviderDeclarationRule(
 			new DataProviderHelper(),
 			self::getContainer()->getByType(FileTypeMapper::class),
+			true,
 			true
 		);
 	}
@@ -28,6 +29,10 @@ public function testRule(): void
 				'@dataProvider providebaz related method is used with incorrect case: provideBaz.',
 				13,
 			],
+			[
+				'@dataProvider provideQux related method must be static.',
+				13,
+			],
 			[
 				'@dataProvider provideQuux related method must be public.',
 				13,