Mocking a call with chained methods and arguments

Question

Im learning how to use mockery in order to run some unit test and Im not sure what to do to mock my database class. It consists of separate methods that can be chained like

Answer 1

If you are happy with a syntax like this

$db = m::stub('Database', array(
   'select(someTblName)->where(fieldName,someValue)->runQuery->fetch' => 'return stuff',
   'select(someOtherTblName)->where(...)->runQuery->fetch' => 'return other stuff'

));

you can use a small Mockery helper/extension I've just written

https://github.com/elvisciotti/mockery-stub-chain-args

alpha version, I'll probably improve it soon

Answer 2

You can do shouldReceive('select->where->runQuery->fetch') if you do not care about the arguments. If you do want to check the arguments, you have to do the following to chain expectations:

$db->shouldReceive('select')->with('someTblName', ['fieldName'])
    ->once()->andReturn(m::self())->getMock()
    ->shouldReceive('where')...

The last shouldReceive would be shouldReceive('fetch')->andReturn(null).