PHPUnit错误：使用dataProvider缺少参数1

Question

I have the below test script:

class testTest extends PHPUnit_Framework_TestCase
{

    public function provider() {
        return [
            [1,false],
            [2,true]
        ];
    }

   /**
    * @test
    * @provider provider
    */
    public function test_test($num, $expected) {
        $actual = $num%2 ? false : true;
        $this->assertEquals($actual, $expected);
    }
}

Whenever I run this I get the error:

1)  testTest::test_test
Missing argument 1 for testTest::test_test()

I have other tests in my test suit that are not using dataProviders and they are working fine. How do I fix this ?

Answer 1

Change @provider to @dataProvider, e.g.

/**
* @dataProvider provider
*/
public function test_test($num, $expected) {
    $actual = $num%2 ? false : true;
    $this->assertEquals($actual, $expected);
}

Read the documentation: https://phpunit.de/manual/current/en/appendixes.annotations.html#appendixes.annotations.dataProvider

---

PS: you've got the arguments the wrong way round in your assertEquals. It should be:

$this->assertEquals($expected, $actual);

Again: https://phpunit.de/manual/current/en/appendixes.assertions.html#appendixes.assertions.assertEquals