public void testDeleteThreeCopiesForValidIsbn() throws Exception {
assertISBNKnownWithEntries("3", 3);
assertEquals(6, mockInMemoryMediaGateway.copyCount());
List copies = mockInMemoryMediaGateway.findAllCopies("3");
for (Iterator iter = copies.iterator(); iter.hasNext(); ) {
MediaCopy copy = (MediaCopy) iter.next();
String id = copy.getId();
request.setParameter("delete_" + id, "on");
}
ActionResult result = booksController.handle(request);
assertTrue(mockInMemoryMediaGateway.contains("3"));
assertISBNKnownWithEntries("3", 0);
assertEquals(3, mockInMemoryMediaGateway.copyCount());
assertTrue(result.getInfoMessage().length() > 0);
assertEquals("", result.getWarningMessage());
assertEquals("", result.getErrorMessage());
}
private void assertISBNKnownWithEntries(String isbn, int numberOfCopiesExpected) {
assertEquals(3, mockInMemoryMediaGateway.mediaCount());
assertEquals(numberOfCopiesExpected, mockInMemoryMediaGateway.findAllCopies(isbn).size());
}