Is there a way to mock a class and use regular class construction?

Question

Background: I am still learning to use mocks and am trying to test a WordPress plugin. I would prefer to not load WordPress and simply use mocks to fake class/function where needed and only test my code's inputs and outputs.

I am trying to do the following:

// WP_Query IS NOT DEFINED

$mock = \Mockery::mock('WP_Query', array('have_posts' => true));

$this->assertTrue($mock->have_posts());

$q = new WP_Query();

// fails with "Call to undefined method WP_Query::have_posts()"
$this->assertTrue($q->have_posts());

Is the above possible with Mockery?

Answer 1

When passed an array as the second argument to Mockery::mock, it's expecting constructor arguments, not the methods to be mocked.

Instead, you need:

$mock = \Mockery::mock('WP_Query');
$mock->shouldReceive('have_posts')->andReturn(true);