feat: add test for get_nfpm_arch

test/scripts/build-lib.bats

@@ -0,0 +1,21 @@
+#!/usr/bin/env bats
+
+SCRIPT_NAME="build-lib.sh"
+SCRIPT="$BATS_TEST_DIRNAME/../../ci/build/$SCRIPT_NAME"
+
+source "$SCRIPT"
+
+@test "get_nfpm_arch should return armhfp for rpm on armv7l" {
+  run get_nfpm_arch rpm armv7l
+  [ "$output" = "armhfp" ]
+}
+
+@test "get_nfpm_arch should return armhf for deb on armv7l" {
+  run get_nfpm_arch deb armv7l
+  [ "$output" = "armhf" ]
+}
+
+@test "get_nfpm_arch should return arch if no arch override exists " {
+  run get_nfpm_arch deb i386
+  [ "$output" = "i386" ]
+}