Avoid using readlink(1) which is not POSIX-compatible; moreover,
`readlink -f` is not available on Mac OS by default.
Instead, always convert $CALCURSE to an absolute path (that may or may
not be canonical, i.e., be a symlink or contain ../ as component) in
test-init.sh by prepending the current working directory if the original
path is relative. While not fully equivalent to `readlink -f`, this
should be good enough for use in our tests.
Signed-off-by: Lukas Fleischer <lfleischer@calcurse.org>
Add a small helper script called "test-init.sh" that is sourced in each
test case and initializes the CALCURSE and DATA_DIR environment
variables.
Update the test suite README to point out that setting these environment
variables is no longer required.
Signed-off-by: Lukas Fleischer <calcurse@cryptocrack.de>
