Tests on search containers => DONE

...tance/search/containers/abstract-search.component.spec.ts

...p/instance/search/containers/abstract-search.component.ts

...rc/app/instance/search/containers/criteria.component.html

...app/instance/search/containers/criteria.component.spec.ts

.../src/app/instance/search/containers/criteria.component.ts

...src/app/instance/search/containers/dataset.component.html

.../app/instance/search/containers/dataset.component.spec.ts

...t/src/app/instance/search/containers/dataset.component.ts

...c/app/instance/search/containers/result.component.spec.ts