tests: add test case for reverts which simulates a full workflow.

tests/xbps/xbps-install/Kyuafile

@@ -2,3 +2,4 @@ syntax("kyuafile", 1)
 
 test_suite("xbps-install")
 atf_test_program{name="behaviour_tests"}
+atf_test_program{name="revert_tests"}

tests/xbps/xbps-install/Makefile

@@ -1,7 +1,7 @@
 TOPDIR = ../../..
 -include $(TOPDIR)/config.mk
 
-TESTSHELL = behaviour_tests
+TESTSHELL = behaviour_tests revert_tests
 TESTSSUBDIR = xbps/xbps-install
 EXTRA_FILES = Kyuafile
 

tests/xbps/xbps-install/revert_tests.sh

@@ -0,0 +1,50 @@
+#! /usr/bin/env atf-sh
+
+atf_test_case revert_package
+
+revert_package_head() {
+	atf_set "descr" "xbps-install(8): install multiple existent pkgs (issue #53)"
+}
+
+revert_package_body() {
+	mkdir -p some_repo pkg_A
+	touch pkg_A/file00
+	# create package and install it
+	cd some_repo
+	echo first V1.0 > ../pkg_A/file00
+	xbps-create -A noarch -n A-1.0_1 -s "A pkg" ../pkg_A
+	atf_check_equal $? 0
+	xbps-rindex -a *.xbps
+	atf_check_equal $? 0
+	cd ..
+	xbps-install -r root -C empty.conf --repository=$PWD/some_repo -y A
+	atf_check_equal $? 0
+
+	# make an update to the package
+	cd some_repo
+	echo V1.1 > ../pkg_A/file00
+	xbps-create -A noarch -n A-1.1_1 -s "A pkg" ../pkg_A
+	atf_check_equal $? 0
+	xbps-rindex -a *.xbps
+	atf_check_equal $? 0
+	cd ..
+	xbps-install -r root -C empty.conf --repository=$PWD/some_repo -y -u
+	atf_check_equal $? 0
+
+	# whoops, we made a mistake, rollback to 1.0_1
+	cd some_repo
+	echo second V1.0 > ../pkg_A/file00
+	xbps-create -A noarch -n A-1.0_1 -r "1.1_1" -s "A pkg" ../pkg_A
+	atf_check_equal $? 0
+	xbps-rindex -a *.xbps
+	atf_check_equal $? 0
+	cd ..
+	LD_PRELOAD=/home/tox/dev/src/xbps/lib/libxbps.so.2.0.0 xbps-install -d -r root -C empty.conf --repository=$PWD/some_repo -y -u
+	atf_check_equal $? 0
+
+	atf_check_equal "`cat root/file00`" "second V1.0"
+}
+
+atf_init_test_cases() {
+	atf_add_test_case revert_package
+}