xbps-rindex(8): fix #24 and added an ATF test case.

tests/xbps/xbps-rindex/Kyuafile

@@ -1,4 +1,5 @@
 syntax("kyuafile", 1)
 
 test_suite("xbps-rindex")
+atf_test_program{name="add_test"}
 atf_test_program{name="clean_test"}

tests/xbps/xbps-rindex/Makefile

@@ -1,7 +1,7 @@
 TOPDIR = ../../..
 -include $(TOPDIR)/config.mk
 
-TESTSHELL = clean_test
+TESTSHELL = add_test clean_test
 TESTSSUBDIR = xbps/xbps-rindex
 EXTRA_FILES = Kyuafile
 

tests/xbps/xbps-rindex/add_test.sh

@@ -0,0 +1,35 @@
+#! /usr/bin/env atf-sh
+# Test that xbps-rindex(8) -a (add mode) works as expected.
+
+# 1st test: test that update mode work as expected.
+atf_test_case update
+
+update_head() {
+	atf_set "descr" "xbps-rindex(8) -a: update test"
+}
+
+update_body() {
+	mkdir -p some_repo pkg_A
+	touch pkg_A/file00
+	cd some_repo
+	xbps-create -A noarch -n foo-1.0_1 -s "foo pkg" ../pkg_A
+	atf_check_equal $? 0
+	xbps-rindex -a *.xbps
+	atf_check_equal $? 0
+	xbps-create -A noarch -n foo-1.1_1 -s "foo pkg" ../pkg_A
+	atf_check_equal $? 0
+	xbps-rindex -a *.xbps
+	atf_check_equal $? 0
+	cd ..
+	result="$(xbps-query --repository=some_repo -o \*)"
+	expected="foo-1.1_1: /file00 (some_repo)"
+	rv=0
+	if [ "$result" != "$expected" ]; then
+		rv=1
+	fi
+	atf_check_equal $rv 0
+}
+
+atf_init_test_cases() {
+	atf_add_test_case update
+}