@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 testInvalidCheckoutBookOptionDoesNotRemoveBookFromList() {
String commands[] = {"193738"};
setUserInput(commands);
checkoutBookMenuOperation.execute(library, console);
verify(library, never()).checkOutBook(193738);
}
@Test
public void testInvalidCheckoutBookOptionWarnsUser() {
String commands[] = {"-23"};
setUserInput(commands);
checkoutBookMenuOperation.execute(library, console);
verify(console).printMessage("That book is not available");
}
@Test
public void testValidCheckoutBookOptionGivesUserThankYouMessage() {
String commands[] = {"1"};
setUserInput(commands);
checkoutBookMenuOperation.execute(library, console);
verify(console).printMessage("Thank you! Enjoy the book");
}
@Test
public void testValidCheckoutBookOptionRemovesBookFromList() {
String commands[] = {"1"};
setUserInput(commands);
checkoutBookMenuOperation.execute(library, console);
verify(library).checkOutBook(1);
}
@Test
public void testUserPromptedForBookSelectionOnExecute() {
checkoutBookMenuOperation.execute(library, console);
verify(console).printMessage("> Enter book number: ");
}
@Test
public void testAvailableBookListPrintedOnExecute() {
checkoutBookMenuOperation.execute(library, console);
verify(console).printLibraryItemList(library.availableBooks());
}
@Test
public void testCheckoutBooksHeaderPrintedOnExecute() {
checkoutBookMenuOperation.execute(library, console);
verify(console).printMessage("Books available for checkout:");
}