1 files changed, 93 insertions, 0 deletions
diff --git a/aux/tests-lib.sh b/aux/tests-lib.sh
new file mode 100755
index 0000000..e075974
--- /dev/null
+++ b/aux/tests-lib.sh
@@ -0,0 +1,93 @@
+#!/bin/sh
+
+OUT=
+ERR=
+STATUS=
+
+assert_status() {
+	if [ "$STATUS" != "$1" ]; then
+		printf '\nERR: Bad status.\n\nexpected: %s\ngot:      %s\n' \
+			"$1" "$STATUS" >&2
+		exit 1
+	fi
+}
+
+assert_usage() {
+	if ! grep -Fq 'Usage' "$1"; then
+		echo 'Expected to find "Usage" text, it was missing:' >&2
+		cat "$1" >&2
+		exit 1
+	fi
+}
+
+assert_empty_stream() {
+	if [ -s "$2" ]; then
+		printf '\nERR: Expected %s (%s) to be empty, but has content:\n%s\n' \
+			"$1" "$2" "$(cat "$2")" >&2
+		exit 1
+	fi
+}
+
+assert_empty_stdout() {
+	assert_empty_stream STDOUT "$OUT"
+}
+
+assert_empty_stderr() {
+	assert_empty_stream STDERR "$ERR"
+}
+
+assert_stream() {
+	if [ "$(cat "$2")" != "$3" ]; then
+		printf '\nERR: Bad %s (%s)\n\nexpected: %s\ngot:      %s\n' \
+			"$1" "$2" "$3" "$(cat "$2")" >&2
+		exit 1
+	fi
+}
+
+assert_stdout() {
+	assert_stream STDOUT "$OUT" "$1"
+}
+
+assert_stderr() {
+	assert_stream STDERR "$ERR" "$1"
+}
+
+assert_grep_stream() {
+	if ! grep -qE "$3" "$2"; then
+		printf '\nERR: Bad %s (%s)\n\ngrepping: %s\nin:\n%s\n' \
+			"$1" "$2" "$3"  "$(cat "$2")" >&2
+		exit 1
+	fi
+}
+
+assert_grep_stdout() {
+	assert_grep_stream STDOUT "$OUT" "$1"
+}
+
+assert_grep_stderr() {
+	assert_grep_stream STDERR "$ERR" "$1"
+}
+
+assert_fgrep_stream() {
+	if ! grep -Fq -- "$3" "$2"; then
+		printf '\nERR: Bad %s (%s)\n\ngrepping: %s\nin:\n%s\n' \
+			"$1" "$2" "$3"  "$(cat "$2")" >&2
+		exit 1
+	fi
+}
+
+assert_fgrep_stdout() {
+	assert_fgrep_stream STDOUT "$OUT" "$1"
+}
+
+assert_fgrep_stderr() {
+	assert_fgrep_stream STDERR "$ERR" "$1"
+}
+
+testing() {
+	printf 'testing: %s...' "$1" >&2
+}
+
+test_ok() {
+	printf ' OK.\n' >&2
+}