I ran into a couple of challenges for how to unit test my FileUpload package.: mocking $_FILES and PHP function "move_uploaded_file." What I ended up doing was establishing a property named $file_array in my upload class. In the constructor, I set that property to the value contained in $_FILES. Then, I allowed it to be overridden by the value i…

PHP Unit Testing with $_FILES and move_uploaded_file.php

<?php

    /**
     * $files_array contains $_FILE superglobal
     *
     * Helps with Unit Testing
     *
     * @var array
     */
    protected $file_array = array();

    /**
     * Constructor
     *
     * @param  array $options
     *
     * @since  1.0
     */
    public function __construct($options = array())
    {        
        $this->file_array = $_FILES;

        if (isset($options['file_array'])) {
            $this->file_array = $options['file_array'];
        }
        
        //etc...
    }
//etc...
}

/**
 * Placed this in my Unit Test Class to override the PHP function
 */ 
function move_uploaded_file($temporary_name, $target_path)
{
    //override PHP's function here...
}

/**
 * Placed this in my Unit Test Class to override the PHP function
 */ 
function move_uploaded_file($temporary_name, $target_path)
{
    //override PHP's function here...
}

And what happens when you run it?