International Project & Quality Management Institute (IPQMI) offers online testing. In general, learning is enhanced by using multiple resources. A good starting pint for the testing is to survey the learning objectives, tables, figures, and headings of all materials related about project management. Keeping your study materials handy, review the website then read carefully. Taking notes as you read helps most people focus on the important points. In addition, a well-crafted set of note is invaluable when preparing for the test.
Then take the self-test on the IPQMI website to check your comprehension. Prior to taking the test carefully review your learning resources, notes, exercises and supplementary materials.