Index[A] [B] [C] [D] [E] [F] [G] [H] [I] [J] [L] [M] [N] [O] [P] [R] [S] [T] [U] [V] [W] [X] [Y] [Z] test environment, Rails testing 2nd assertions common assertions Rails-supplied automated testing environments fixtures functional tests 2nd integration tests 2nd quick reference Ruby Test::Unit framework Rails extensions to Test methods , Test Cases, and Test Suites test subdirectory third-party tools unit tests 2nd thumbnail_tag helper transactions trees |