The database Mental Measurements Yearbook and Tests in Print (MMY) is a comprehensive list of testing instruments for education and psychology. It includes reviews but not full-text of tests. The review may include information on accessing the test and/or the permissions needed for the test.
If you are looking for a specific test, this is a list of all the tests that have been reviewed by MMY. If you do not locate a variation on the test's title there, you will need to search for articles about it instead. Try using the database ERIC.