Both cgit_print_diff() and cgit_diff_tree() handles root commits nicely, but cgit_print_commit() forgot to check the case of 0 parents. This fixes it, and adds tests to avoid future regressions. Signed-off-by: Lars Hjemli <hjemli@gmail.com>
Signed-off-by: Lars Hjemli <hjemli@gmail.com>
This creates a simple testsuite, heavily inspired by the testsuite in git. Signed-off-by: Lars Hjemli <hjemli@gmail.com>