$mock = $this->getMockBuilder('MyClass') ->getMock();
$mock = $this->getMockBuilder('MyClass') ->setMethods(['getFoo']) ->getMock(); $mock->expects($this->once()) ->method('getFoo') ->willReturn('bar');
$mock = $this->getMockBuilder('MyClass') ->setMethods(['setConfig']) ->getMock(); $config = new Config(['foo' => 'bar']); $mock->expects($this->once()) ->method('setConfig') ->with($this->equalTo($config));This code creates a mock object for MyClass and specifies that the method setConfig should be called once with an argument that is equal to a new Config object. Overall, PHPUnit_Framework_MockObject_MockObject is a powerful tool for PHP developers to create mock objects for testing. It is a part of the PHPUnit testing framework, which is widely-used in the PHP community.