For the kinds of projects you mention (scripting language, small-medium sized) I aim for 1-2 minutes max, which is usually not a problem. This precludes running

For the kinds of projects you mention (scripting language, small-medium sized) I aim for 1-2 minutes max, which is usually not a problem. This precludes running a lot of integration tests requiring expensive setup/teardown, though the need or value of those greatly depends on the project.