The title of this book is actually Auditing and Assurance Services: An Integrated Approach.
If you're a student, you're out of luck. The test bank and solutions manual for the 12th edition aren't available in any library (per WorldCat.org, the worldwide library catalog) and the publisher will verify that you're a faculty member at an instition that is actually using the book before you're allowed to purchase any of these kind of materials from them. Since the 12th edition is the current one, and the test bank and solutions manual look like optional or supplementary purchases, you're unlikely to find extra copies floating around loose-- these kinds of materials aren't purchased unless an instructor is actually going to use them (unlike review copies of textbooks, which are complimentary and easy to find.)
You do have an alternative though-- from the description of this book on the publisher's website, it looks like there should be a CD-Rom with it that has practice questions and other supplemental materials on it. That should give you an idea of what to expect.
If you're an instructor who has gotten this textbook but not the test bank or solutions manual, you can purchase print copies or download them from the publisher, Pearson/Prentice Hall Business. Here's the website for the book: http://www.pearsonhighered.com/educator/academic/product/0,3110,0135132126,00.html
Just click on the "Resources" tab and scroll down. When you go to place your order, you'll be asked to verify that you're a faculty member at an institution that has adopted this textbook for a class.
Good luck!