To reduce complexity inside PHPUnit's test double functionality, these methods will be deprecated and then removed:

• TestCase::returnValue() (use $double->willReturn() instead of $double->will($this->returnValue()))
• TestCase::onConsecutiveCalls() (use $double->willReturn() instead of $double->will($this->onConsecutiveCalls()))
• TestCase::returnValueMap() (use $double->willReturnMap() instead of $double->will($this->returnValueMap()))
• TestCase::returnArgument() (use $double->willReturnArgument() instead of $double->will($this->returnArgument()))
• TestCase::returnSelf() (use $double->willReturnSelf() instead of $double->will($this->returnSelf()))
• TestCase::returnCallback() (use $double->willReturnCallback() instead of $double->will($this->returnCallback()))
• TestCase::throwException() (use $double->willThrowException() instead of $double->will($this->throwException()))

Timeline

• soft deprecation in PHPUnit 10.3 (add @deprecated annotation to the method declaration)
• deprecation in PHPUnit 11 (using the method will trigger a deprecation)
• removal in PHPUnit 12