test: Add test to ensure all keyword nodes are highlighted

Author: DerekStride

.github/workflows/ci.yml

@@ -21,6 +21,7 @@ jobs:
           node-version: 18
       - run: npm install
       - run: npm test
+      - run: scripts/test-keywords.sh
   validate_tests:
     runs-on: ["ubuntu-latest"]
     strategy:

scripts/test-keywords.sh

@@ -0,0 +1,20 @@
+#!/bin/bash
+
+mkdir -p tmp/tree-sitter-sql/
+
+cat src/grammar.json |
+  jq '.rules | to_entries[] | select(.key | contains("keyword")) | .key' |
+  tr -d '"' |
+  sort > tmp/tree-sitter-sql/keywords.txt
+
+cat queries/highlights.scm |
+  grep -o "keyword\w\+" |
+  sort > tmp/tree-sitter-sql/highlights.txt
+
+keywords=$(comm -3 tmp/tree-sitter-sql/keywords.txt tmp/tree-sitter-sql/highlights.txt)
+
+if [[ "$keywords" ]]; then
+  echo "ERROR: keywords in grammar.json are not in sync with queries/highlights.scm"
+  echo $keywords
+  exit 1
+fi