From 7a7b84a3b7761dcd2e4051a30fc5bd2236b8be11 Mon Sep 17 00:00:00 2001
From: Patrick McDermott <patrick.mcdermott@libiquity.com>
Date: Sat, 17 Jun 2023 17:41:45 -0400
Subject: tests: Add common functions (copied from opkbuild)

---
diff --git a/tests/aux/common.sh b/tests/aux/common.sh
new file mode 100644
index 0000000..9f9edcc
--- /dev/null
+++ b/tests/aux/common.sh
@@ -0,0 +1,69 @@
+# Functions common to tests
+#
+# Copyright (C) 2018, 2019 Patrick McDermott
+#
+# This file is part of opkg-opk.
+#
+# opkg-opk is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# opkg-opk is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with opkg-opk.  If not, see <http://www.gnu.org/licenses/>.
+
+is()
+{
+	local description="${1}"
+	local got="${2}"
+	local expected="${3}"
+	shift 3
+
+	if [ "x${got}" = "x${expected}" ]; then
+		ok_ -- "${description}"
+	else
+		not_ok_ -- "${description}"
+		diag_ " Failed test '${description}'"
+		diag_ "         got: '${got}'"
+		diag_ "    expected: '${expected}'"
+	fi
+}
+
+cmd_is()
+{
+	local description="${1}"
+	shift 1
+	local ok=
+	local eof=
+	local got=
+	local exp=
+
+	ok=true
+	exec 3<<-EOF
+		$("${@}")
+		EOF
+	while :; do
+		eof=0
+		IFS='' read -r got <&3 || eof=$((${eof} + 1))
+		IFS='' read -r exp <&0 || eof=$((${eof} + 2))
+		[ ${eof} -eq 3 ] && break
+		[ x"${got}" = x"${exp}" ] && continue
+		if ${ok}; then
+			not_ok_ -- "${description}"
+			diag_ " Failed test '${description}'"
+			ok=false
+		fi
+		diag_ "         got: '${got}'"
+		diag_ "    expected: '${exp}'"
+	done
+	exec 3<&-
+
+	if ${ok}; then
+		ok_ -- "${description}"
+	fi
+}
diff --git a/tests/local.mk b/tests/local.mk
index 637eb30..84833d1 100644
--- a/tests/local.mk
+++ b/tests/local.mk
@@ -10,4 +10,5 @@ SH_LOG_DRIVER = \
 EXTRA_DIST += \
 	$(TESTS) \
 	build-aux/tap-driver.sh \
-	tests/aux/tap-functions.sh
+	tests/aux/tap-functions.sh \
+	tests/aux/common.sh
--
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