Coverage Summary for Class: SaveSearchUseCase (clean.architecture.domain.search.usecase)

 package clean.architecture.domain.search.usecase
 
 import clean.architecture.domain.search.SearchRepository
 import clean.architecture.domain.search.model.SaveSearchState
 import clean.architecture.domain.search.model.Search
 import clean.architecture.domain.search.model.SearchValidationError
 
 /**
  * Use case to save search to the search history.
  *
  * @param searchRepository The search repository.
  */
 class SaveSearchUseCase(
     private val searchRepository: SearchRepository
 ) {
 
     /**
      * Executes the use case.
      *
      * @param input The search query text from the user input.
      */
     suspend operator fun invoke(input: String): SaveSearchState {
         val text = input.trim()
         val error = validateSearch(text)
         return if (error != null) {
             SaveSearchState.ValidationError(error)
         } else {
             saveSearch(text)
             SaveSearchState.Success
         }
     }
 
     private fun validateSearch(text: String): SearchValidationError? = when {
         text.isEmpty() -> SearchValidationError.EMPTY_TEXT
         text.length > MAX_SEARCH_LENGTH -> SearchValidationError.TOO_LONG_TEXT
         text.length < MIN_SEARCH_LENGTH -> SearchValidationError.TOO_SHORT_TEXT
         text.contains(Regex("[^a-zA-Z0-9 ]")) -> SearchValidationError.INVALID_CHARACTERS
         else -> null
     }
 
     private suspend fun saveSearch(text: String) {
         val savedSearch = searchRepository.getSearch(text)
         val currentTime = System.currentTimeMillis()
         if (savedSearch != null) {
             val updated = savedSearch.copy(updated = currentTime)
             searchRepository.saveSearch(updated)
         } else {
             val search = Search(id = 0, text = text, created = currentTime, updated = currentTime)
             searchRepository.saveSearch(search)
         }
     }
 
     private companion object {
         private const val MAX_SEARCH_LENGTH = 30
         private const val MIN_SEARCH_LENGTH = 3
     }
 }