phpunitHow to mock a property in PHPUnit?

Mocking a property in PHPUnit can be done using the setProperty method of the PHPUnit_Framework_TestCase class.

$mock = $this->getMockBuilder('MyClass')
             ->setMethods(array('myMethod'))
             ->getMock();

$mock->expects($this->any())
     ->method('myMethod')
     ->will($this->returnValue('foo'));

$this->setProperty($mock, 'myProperty', 'bar');

The code above will set the myProperty property of the MyClass mock object to bar.

Code explanation

1. $mock = $this->getMockBuilder('MyClass') - creates a mock object of the MyClass class.
2. ->setMethods(array('myMethod')) - sets the methods to be mocked.
3. ->getMock(); - returns the mock object.
4. $mock->expects($this->any()) - sets the expectation for the myMethod method.
5. ->method('myMethod') - specifies the method to be mocked.
6. ->will($this->returnValue('foo')); - sets the return value for the myMethod method.
7. $this->setProperty($mock, 'myProperty', 'bar'); - sets the myProperty property of the MyClass mock object to bar.

Output example

No output.

Helpful links

• PHPUnit Documentation - Mock Objects
• PHPUnit Documentation - setProperty

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