The model i like, keeping to the monumental theme of the test pyramid, is a testhenge: http://www.ox.ac.uk/sites/files/oxford/styles/ow_medium_feature/public/f

The model i like, keeping to the monumental theme of the test pyramid, is a testhenge: http://www.ox.ac.uk/sites/files/oxford/styles/ow_medium_feature/public/field/field_image_main/shutterstock_625998422.jpg http://www.ox.ac.uk/sites/files/oxford/styles/ow_medium_feat... You need a thin layer of high-level tests (controller and/or browser) covering the entire application, and then columns of lower-level (integration and unit) diving deeper into it where there are areas of particular complexity or risk.