Simplify build and backend test layout

tests/package_contract.sh

@@ -0,0 +1,62 @@
+#!/usr/bin/env bash
+set -eo pipefail
+
+ROOT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
+PODKOP_MAKEFILE="$ROOT_DIR/podkop/Makefile"
+BUILD_SCRIPT="$ROOT_DIR/build.sh"
+PODKOP_LIB="$ROOT_DIR/podkop/files/usr/lib"
+
+fail() {
+  printf 'FAIL: %s\n' "$1" >&2
+  exit 1
+}
+
+require_file() {
+  local file="$1"
+
+  [ -r "$file" ] || fail "required file is missing: $file"
+}
+
+require_make_dep() {
+  local package="$1"
+
+  grep -Eq "DEPENDS:=.*(^|[[:space:]])\\+$package([[:space:]]|$)" "$PODKOP_MAKEFILE" ||
+    fail "podkop/Makefile DEPENDS is missing +$package"
+}
+
+require_build_dep() {
+  local variable="$1"
+  local package="$2"
+
+  grep -Eq "^${variable}=.*(^|[[:space:],])${package}([[:space:],\"]|$)" "$BUILD_SCRIPT" ||
+    fail "build.sh ${variable} is missing $package"
+}
+
+require_package_dependency() {
+  local package="$1"
+
+  require_make_dep "$package"
+  require_build_dep "BACKEND_DEPENDS_IPK" "$package"
+  require_build_dep "BACKEND_DEPENDS_APK" "$package"
+}
+
+require_file "$PODKOP_MAKEFILE"
+require_file "$BUILD_SCRIPT"
+require_file "$PODKOP_LIB"
+
+if grep -Rqs 'require("uci")' "$PODKOP_LIB"; then
+  require_package_dependency "ucode-mod-uci"
+fi
+
+if grep -Rqs 'require("fs")' "$PODKOP_LIB"; then
+  require_package_dependency "ucode-mod-fs"
+fi
+
+if grep -Rqs 'podkop_dnsmasq_failsafe_restore_raw' \
+  "$ROOT_DIR/podkop/files/usr/bin" \
+  "$ROOT_DIR/podkop/files/usr/lib" \
+  "$ROOT_DIR/podkop/files/etc/init.d"; then
+  fail "duplicated raw dnsmasq failsafe restore shell owner is present"
+fi
+
+printf 'package contract checks passed\n'