daemon: Add tests for substitutes and --no-substitutes.

* tests/guix-daemon.sh: Add substituter tests.

tests/guix-daemon.sh

@@ -1,5 +1,5 @@
 # GNU Guix --- Functional package management for GNU
-# Copyright © 2012 Ludovic Courtès <ludo@gnu.org>
+# Copyright © 2012, 2014 Ludovic Courtès <ludo@gnu.org>
 #
 # This file is part of GNU Guix.
 #
@@ -17,7 +17,7 @@
 # along with GNU Guix.  If not, see <http://www.gnu.org/licenses/>.
 
 #
-# Test the daemon.
+# Test the daemon and its interaction with 'guix substitute-binary'.
 #
 
 set -e
@@ -25,5 +25,53 @@ set -e
 guix-daemon --version
 guix build --version
 
-guix build -e '(@ (gnu packages bootstrap) %bootstrap-guile)'
-guix build coreutils -n
+drv="`guix build emacs -d`"
+out="`guile -c '								\
+  (use-modules (guix) (gnu packages emacs))					\
+  (define store (open-connection))						\
+  (display (derivation->output-path (package-derivation store emacs)))'`"
+
+hash_part="`basename $out | cut -c 1-32`"
+narinfo="$hash_part.narinfo"
+substitute_dir="`echo $GUIX_BINARY_SUBSTITUTE_URL | sed -'es,file://,,g'`"
+
+cat > "$substitute_dir/nix-cache-info"<<EOF
+StoreDir: `dirname $drv`
+WantMassQuery: 0
+EOF
+
+cat > "$substitute_dir/$narinfo"<<EOF
+StorePath: $out
+URL: /nowhere/example.nar
+Compression: none
+NarSize: 1234
+References: 
+System: `guile -c '(use-modules (guix)) (display (%current-system))'`
+Deriver: $drv
+EOF
+
+# Remove the cached narinfo.
+rm -f "$XDG_CACHE_HOME/guix/substitute-binary/$hash_part"
+
+# Make sure we see the substitute.
+guile -c '
+  (use-modules (guix))
+  (define store (open-connection))
+  (set-build-options store #:use-substitutes? #t)
+  (exit (has-substitutes? store "'"$out"'"))'
+
+# Now, run guix-daemon --no-substitutes.
+socket="$NIX_STATE_DIR/alternate-socket"
+guix-daemon --no-substitutes --listen="$socket" --disable-chroot &
+daemon_pid=$!
+trap "kill $daemon_pid" EXIT
+
+# Make sure we DON'T see the substitute.
+guile -c "
+  (use-modules (guix))
+  (define store (open-connection \"$socket\"))
+
+  ;; This setting MUST NOT override the daemon's --no-substitutes.
+  (set-build-options store #:use-substitutes? #t)
+
+  (exit (not (has-substitutes? store \"$out\")))"