Code Inspection: Covered function reference is provided without ‘::’

Reports the references to functions/methods in the @covers PHPDoc tags that are not prepended with the scope resolution operator (::).

In the following example, an incorrect annotation provided for the coveredFunction function. After the quick-fix is applied, the function reference is prepended with the :: scope resolution operator.

function coveredFunction() {}
class coversExampleTest extends TestCase {
    /**
     * @covers coveredFunction
     */
    public function testCoversExample() {}
}

function coveredFunction() {}
class coversExampleTest extends TestCase {
    /**
     * @covers ::coveredFunction
     */
    public function testCoversExample() {}
}