Ju8z

Make the test more readable using functional assertions.

Before:

```
@Test
void testStockNegativeRejection() {
    try {
        inventory.checkStock(-5);
        fail("Should have thrown exception");

Ju8z

        /**
         * Check current URL for parameters: "&parameter=", everything after "=" will be used as VALUE.
         *
         * @param name URL Parameter Name. For Example userId (in URL ist: &userId=VALUE)
         * @returns {*} Parameter VALUE
         */
        function getParameter(name) {
            url = window.location.href;
            name = name.replace(/[\[\]]/g, '\\$&')
            var regex = new RegExp('[?&]' + name + '(=([^&#]*)|&|#|$)'),