Test for the directory structure

Ensure that calcurse uses the right data and configuration directories
depending on the conditions.

Helped-by: Lars Henriksen <LarsHenriksen@get2net.dk>
Signed-off-by: Lukas Fleischer <lfleischer@calcurse.org>

test/io-006.sh

@@ -0,0 +1,12 @@
+#!/bin/sh
+
+. "${TEST_INIT:-./test-init.sh}"
+dir=$(mktemp -d)
+
+CALCURSE=$(readlink -f "$CALCURSE")
+cd "$dir"
+(unset -v HOME XDG_DATA_HOME XDG_CONFIG_HOME; "$CALCURSE" -a)
+[ -f "$dir/.calcurse/apts" ] && [ -f "$dir/.calcurse/conf" ] && failed=0 || failed=1
+
+rm -rf "$dir"
+exit "$failed"