My constructor sets property with data which loaded from database. How can I test if it really load data from db? I want %100 test coverage rate so I need test every piece of my code.
<?php
class PreferencesAdapter {
private $_preferences = NULL;
public function __construct() {
...
$this->load();
...
}
public function load() {
...
$this->_preferences= DataFromDb();
}
}
?>
I'd mock load() in a test method and verify that it gets called once when creating the object.
(In the interest of fast tests, here is a wordy approach you could do.)
Or, put your relevant queries as public methods in a class PreferencesAdapterQueryCollection, and inject it as an optional constructor parameter to PreferencesAdapter. (If the parameter was not sent in, just instantiate the PreferencesAdapterQueryCollection right there.)
In PreferencesAdapterTest, send in a mocked PreferencesAdapterQueryCollection, with expectations and return values on its public, simple query methods.
I like Mockery for this. See the question Mockery - call_user_func_array() expects parameter 1 to be a valid callback for example invocation.
