Add inventory test

tests/inventory.sh

+#!/bin/bash
+# Load inventory and use it to look for missing symbols
+# Author: Krisjanis Rijnieks
+# Created: 2022-04-27
+
+# TODO: Create whitelist (some parts from DigiKey are not electronics parts)
+
+INVENTORY_URL="http://inventory.fabcloud.io/data/inv.json"
+SOURCE="Digi-Key"
+
+# Colored output
+RED='\033[0;31m'
+GREEN='\033[0;32m'
+RESET='\033[0m'
+
+# Error counting
+ERRORS=0
+
+echo "This script looks for parts that are not in the KiCad fab library yet. In order to add parts, make sure that the manufacturer number of the part is added to the keywords section of the library symbol."
+
+# Read keywords from all KiCad fab library symbols
+KEYWORD_LINES=$(cat ../fab.kicad_sym | grep --extended-regexp --only-matching -U 'property "ki_keywords" "([^"]*)"')
+KEYWORDS=""
+IFS=$'\n'
+for LINE in ${KEYWORD_LINES}; do
+   WORDS=$(echo ${LINE} | sed -En 's/property "ki_keywords" "([^"]*)"/\1/p')
+   KEYWORDS="${KEYWORDS} ${WORDS}"
+done
+
+# Extract items matching source
+# JQ is used here.
+# RT*M: https://stedolan.github.io/jq/manual/
+# Play: https://jqplay.org/
+echo "Loading fab inventory..."
+ITEMS=$(curl -s ${INVENTORY_URL} | jq -r '.topics[] | .sources."Digi-Key".categories[]? | .[] | .item')
+echo "Looking for matches in the library..."
+for ITEM in ${ITEMS}; do
+  # TODO: Look for item in whitelist
+  # Look for item in KiCad symbol library
+  if [[ ${KEYWORDS} == *"${ITEM}"* ]]; then
+    echo -e "${GREEN}${ITEM} found${RESET}"
+  else
+    echo -e "${RED}${ITEM} not found${RESET}"
+    ERRORS=$(expr $ERRORS + 1)
+  fi
+done
+
+echo "Total errors: ${ERRORS}"