window.location.search = '?param=part1'
// It's not working. Browser reloaded or disconnected the unit test cases.

spyOnProperty(window.location, 'search').and.returnValue('?param=part1');
// Disconnected the unit test cases.

spyOnProperty(obj, propertyName, accessTypeopt)

spyOnProperty(window.location, 'search', 'get').and.returnValue('?param=part1')