@Test
public void shouldReportErrorMessageWhenUserSelectsABookThatDoesNotExist() throws IOException {
when(bufferedReader.readLine()).thenReturn("2", "100", "1", "0");
when(library.checkOutBook(99)).thenReturn(false);
when(library.checkOutBook(0)).thenReturn(true);
bookList.add(harryPotter);
menu.respondToUserInput(library);
verify(printStream).println(contains("That book is not available."));
}
private Library buildMockLibraryWithSetBookAmounts(
int numberOfBooksAvailable, int numberOfBooksCheckedOut) {
library = mock(Library.class);
when(library.numberOfBooksInLibrary()).thenReturn(numberOfBooksAvailable);
when(library.numberOfBooksCheckedOut()).thenReturn(numberOfBooksCheckedOut);
for (int i = 0; i < numberOfBooksAvailable; i++) {
when(library.bookIsAvailable(i)).thenReturn(true);
}
for (int i = 0; i < numberOfBooksCheckedOut; i++) {
when(library.bookIsCheckedOut(i)).thenReturn(true);
}
return library;
}
@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 testWarnsUserIfNoBooksAreAvailable() {
when(library.numberOfBooksInLibrary()).thenReturn(0);
checkoutBookMenuOperation.execute(library, console);
verify(console).printMessage("There are no books available for checkout");
}
@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 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 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 shouldPrintNothingWhenThereAreNoBooks() {
createBooksPrintSteamAndLibrary();
library.listBooks();
verifyZeroInteractions(printStream);
}
// This one is done for you
@Test
public void shouldWelcomeUser() {
// We don't need to mock DateTime because it is a value object
// We can't mock it because it is a final class
createBooksPrintStreamDateTimeAndLibrary();
library.welcome(time);
verify(printStream).println(contains("Welcome"));
}
@Test
public void shouldDisplayFormattedTimeWhenFormattedTimeIsAnEmptyString() {
createBooksPrintStreamDateTimeAndLibrary();
when(dateTimeFormatter.print(time)).thenReturn("");
library.welcome(time);
verify(printStream).println(contains("The current time is "));
}
@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.");
}
@Test
public void cannotRemoveFormatAttributeWithNullName() {
try {
Library.newBuilder().removeFormatAttribute(null);
fail("No exception thrown!!");
} catch (NullPointerException e) {
assertEquals(e.getMessage(), BUNDLE.getKey("nullFormat"));
}
}
@Test
public void cannotAddNullFormatAttribute() {
try {
Library.newBuilder().addFormatAttribute("foo", null);
fail("No exception thrown!!");
} catch (NullPointerException e) {
assertEquals(e.getMessage(), BUNDLE.getKey("nullAttribute"));
}
}
@Test
public void cannotRemoveNullKeyword() {
try {
Library.newBuilder().removeKeyword(null);
fail("No exception thrown!!");
} catch (NullPointerException e) {
assertEquals(e.getMessage(), BUNDLE.getKey("nullName"));
}
}
@Test
public void shouldPrintBookTitleWhenThereIsOneBook() {
createBooksPrintSteamAndLibrary();
String title = "Book Title";
books.add(title);
library.listBooks();
// add a verify statement here that shows that the book title was printed by to the printStream
verify(printStream).println("Book Title");
}
@Test
public void shouldPrintBothBookTitlesWhenThereAreTwoBooks() {
createBooksPrintSteamAndLibrary();
String title = "Book Title";
String title2 = "Book Title 2";
books.add(title);
books.add(title2);
library.listBooks();
verify(printStream).println("Book Title");
verify(printStream).println("Book Title 2");
}
@Test
public void testAvailableBookListPrintedOnExecute() {
checkoutBookMenuOperation.execute(library, console);
verify(console).printLibraryItemList(library.availableBooks());
}
private void successfullyReturnBook() throws IOException {
when(bufferedReader.readLine()).thenReturn("2", "1", "0");
when(library.checkOutBook(0)).thenReturn(true);
}