WIP: Tests on search type components

...ch/components/criteria/search-type/list.component.spec.ts

.../search/components/criteria/search-type/list.component.ts

...omponents/criteria/search-type/operator.component.spec.ts

...rch/components/criteria/search-type/operator.component.ts

...h/components/criteria/search-type/radio.component.spec.ts

...search/components/criteria/search-type/radio.component.ts

...ts/criteria/search-type/select-multiple.component.spec.ts

...ponents/criteria/search-type/select-multiple.component.ts

.../components/criteria/search-type/select.component.spec.ts

...earch/components/criteria/search-type/select.component.ts

...ch/components/criteria/search-type/time.component.spec.ts

.../search/components/criteria/search-type/time.component.ts