php test_error ai_generated true

PHPUnit 10.5.20 by Sebastian Bergmann and contributors. Runtime: PHP 8.2.17 Configuration: /var/www/app/phpunit.xml Warning - The data provider specified for Tests\Unit\OrderTest::testDiscount is invalid. Data Provider method Tests\Unit\OrderTest::discountProvider() is not callable or does not return an array of arrays.

ID: php/phpunit-dataprovider-invalid-return

Also available as: JSON · Markdown · 中文
90%Fix Rate
84%Confidence
1Evidence
2024-04-05First Seen

Version Compatibility

VersionStatusIntroducedDeprecatedNotes
PHPUnit 10.5.20 active — — —
PHPUnit 11.0.1 active — — —
PHP 8.2.17 active — — —

Root Cause

The @dataProvider annotation references a method that either does not exist, is not static (in PHPUnit 10+), or returns a non-iterable value (e.g., null, string) instead of an array of arrays.

generic

中文

@dataProvider 注解引用的方法要么不存在，要么不是静态的（在 PHPUnit 10+ 中），要么返回非可迭代值（例如 null、字符串）而不是数组的数组。

Official Documentation

https://docs.phpunit.de/en/10.5/annotations.html#dataProvider

Workarounds

  1. 95% success Ensure the data provider method is declared as public static and returns an array of arrays: public static function discountProvider(): array { return [[10, 5], [20, 10]]; } 
    Ensure the data provider method is declared as public static and returns an array of arrays: public static function discountProvider(): array { return [[10, 5], [20, 10]]; }
  2. 90% success If using PHPUnit 10+, use PHPUnit\Framework\Attributes\DataProvider attribute instead of annotation: #[DataProvider('discountProvider')] public function testDiscount($price, $expected) { ... } 
    If using PHPUnit 10+, use PHPUnit\Framework\Attributes\DataProvider attribute instead of annotation: #[DataProvider('discountProvider')] public function testDiscount($price, $expected) { ... }

中文步骤

  1. Ensure the data provider method is declared as public static and returns an array of arrays: public static function discountProvider(): array { return [[10, 5], [20, 10]]; }
  2. If using PHPUnit 10+, use PHPUnit\Framework\Attributes\DataProvider attribute instead of annotation: #[DataProvider('discountProvider')] public function testDiscount($price, $expected) { ... }

Dead Ends

Common approaches that don't work:

  1. 80% fail

    Making the data provider method non-static and using @dataProvider on an instance method works in PHPUnit 9 but fails in PHPUnit 10+ which requires static data providers.

  2. 70% fail

    Returning a single associative array like ['discount' => 10] instead of an array of arrays [[10], [20]] causes PHPUnit to treat each key as a separate test case, often leading to unexpected failures.