@Test
public void shouldPromptUserWhenFailedReturnBook() throws IOException {
when(bufferedReader.readLine()).thenReturn("3", "1");
when(library.returnBook(anyString())).thenReturn(false, true);
menu.respondToUserInput(library);
verify(printStream).println("That is not a valid book to return.");
}
@Test
public void shouldCallReturnToLibraryWithCorrectBook() throws IOException {
when(bufferedReader.readLine()).thenReturn("3", "SOME BOOK TITLE!", "0");
when(library.returnBook(anyString())).thenReturn(true);
menu.respondToUserInput(library);
verify(library).returnBook("SOME BOOK TITLE!");
}
@Test
public void shouldThankUserWhenSuccessfulReturnOfBook() throws IOException {
when(bufferedReader.readLine()).thenReturn("3", "1");
when(library.returnBook(anyString())).thenReturn(true);
menu.respondToUserInput(library);
verify(printStream).println("Thank you for returning the book.");
}
@Test
public void shouldPromptUserForBookTitleTheyWantToReturn() throws IOException {
when(bufferedReader.readLine()).thenReturn("3", "SOME TITLE!", "0");
when(library.returnBook(anyString())).thenReturn(true);
menu.respondToUserInput(library);
verify(printStream).println("Which book would you like to return?");
}
@Test
public void shouldAllowUserToReenterReturningBookTitle() throws IOException {
when(bufferedReader.readLine()).thenReturn("3", "1");
when(library.returnBook(anyString())).thenReturn(false, true);
menu.respondToUserInput(library);
verify(printStream).println("That is not a valid book to return.");
verify(printStream).println("Thank you for returning the book.");
}