global variables are null when using PHPUnit

Question

I am putting PHPUnit testing into an existing project. Global constants variables are used extensively. In my unit test functions are failing because the global variables ar

Answer 1

You will have to setup your global variable while bootstraping your testing. Here is a sample code of how I wrote test

    /**
     * Class to allow us set product on the fly
     */
    class Product
    {
        public function __call($method, $args)
        {
            if (isset($this->$method)) {
                $func = $this->$method;
                return call_user_func_array($func, $args);
            }
        }
    }

    /**
     * UssdShortcode Tester
     */
    class ShortCodeTester extends WP_UnitTestCase {

        protected  $product;

        public function setUp()
        {   
            $this->product            = new Product;
            $this->product->get_id    = function(){ return 50; };

            $GLOBALS['product']       = $this->product;
        }

        /**
         * A single example test.
         */
        function test_it_can_display_ussd_shortcode() {

            $displayer = new UssdShortCodeDisplayer;
            $expected  = view('show-product-short-code',['product_id' => $this->product->get_id() ]);
            $results   = $displayer->display($this->product->get_id());

            // $this->assertRegexp('/'.$expected.'/', $results);
            $this->assertEquals($expected,$results);
        }
    }