diff --git a/ncsid/test/test_lib.sh b/ncsid/test/test_lib.sh
new file mode 100644
index 0000000..9e6c882
--- /dev/null
+++ b/ncsid/test/test_lib.sh
@@ -0,0 +1,32 @@
+# Compares two strings and prints out an error message if they are not equal
+StrEq() {
+  if [ "$1" != "$2" ]; then
+    echo "${BASH_SOURCE[1]}:${BASH_LINENO[0]} Mismatched strings" >&2
+    echo "  Expected: $2" >&2
+    echo "  Got:      $1" >&2
+    exit 1
+  fi
+}
+
+TESTS=()
+
+# Runs tests and emits output specified by the Test Anything Protocol
+# https://testanything.org/
+TestAnythingMain() {
+  set -o nounset
+  set -o errexit
+  set -o pipefail
+
+  echo "TAP version 13"
+  echo "1..${#TESTS[@]}"
+
+  local i
+  for ((i=0; i <${#TESTS[@]}; ++i)); do
+    local t="${TESTS[i]}"
+    local tap_i=$((i + 1))
+    if ! "$t"; then
+      printf "not "
+    fi
+    printf "ok %d - %s\n" "$tap_i" "$t"
+  done
+}