Add a test suite and CI to run it

Use the basic skeleton from the tree-sitter organization to create some tests.
Add a github CI configuration to run these tests.

.github/workflows/ci.yaml

@@ -0,0 +1,29 @@
+on:
+  workflow_dispatch:
+  pull_request:
+  push:
+
+jobs:
+  lint:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - name: Install modules
+        run: npm install
+      - name: Run ESLint
+        run: npm run lint
+
+  test:
+    runs-on: ${{ matrix.os }}
+    strategy:
+      fail-fast: true
+      matrix:
+        os: [macos-latest, ubuntu-latest, windows-latest]
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-node@v4
+        with:
+          node-version: 18
+      - run: npm install
+      - run: npm test
+      - run: tree-sitter parse test/*.just

README.md

@@ -48,8 +48,10 @@ require"nvim-treesitter.install".compilers = {"gcc-11"}
 
 Building locally:
 
-```
+```sh
+# Create autogenerated files
 npm run gen
+# Run tests
 npm run test
 tree-sitter parse test/test.just
 ```

package.json

@@ -5,7 +5,8 @@
   "main": "grammar.js",
   "scripts": {
     "test": "tree-sitter test",
-    "gen": "tree-sitter generate"
+    "gen": "tree-sitter generate",
+    "lint": "eslint grammar.js"
   },
   "repository": {
     "type": "git",
@@ -24,6 +25,8 @@
     "tree-sitter": "^0.19.0"
   },
   "devDependencies": {
+    "eslint": "^8.51.0",
+    "eslint-config-google": "^0.14.0",
     "tree-sitter-cli": "^0.19.3"
   },
   "tree-sitter": [

test/corpus/recipes.txt

@@ -0,0 +1,238 @@
+================================================================================
+recipe
+================================================================================
+
+foo:
+	body
+
+--------------------------------------------------------------------------------
+
+(source_file
+  (item
+    (eol
+      (NEWLINE)))
+  (item
+    (recipe
+      (recipeheader
+        (NAME))
+      (NEWLINE)
+      (body
+        (INDENT)
+        (recipe_body
+          (line
+            (recipeline
+              (notcomment)
+              (NEWLINE))))
+        (MISSING DEDENT)))))
+
+================================================================================
+quiet
+================================================================================
+
+@foo:
+	body
+
+--------------------------------------------------------------------------------
+
+(source_file
+  (item
+    (eol
+      (NEWLINE)))
+  (item
+    (recipe
+      (recipeheader
+        (NAME))
+      (NEWLINE)
+      (body
+        (INDENT)
+        (recipe_body
+          (line
+            (recipeline
+              (notcomment)
+              (NEWLINE))))
+        (MISSING DEDENT)))))
+
+================================================================================
+dependencies
+================================================================================
+
+foo: bar baz
+	body
+
+--------------------------------------------------------------------------------
+
+(source_file
+  (item
+    (eol
+      (NEWLINE)))
+  (item
+    (recipe
+      (recipeheader
+        (NAME)
+        (dependencies
+          (dependency
+            (NAME))
+          (dependency
+            (NAME))))
+      (NEWLINE)
+      (body
+        (INDENT)
+        (recipe_body
+          (line
+            (recipeline
+              (notcomment)
+              (NEWLINE))))
+        (MISSING DEDENT)))))
+
+================================================================================
+arguments
+================================================================================
+
+foo bar *baz:
+	body
+
+--------------------------------------------------------------------------------
+
+(source_file
+  (item
+    (eol
+      (NEWLINE)))
+  (item
+    (recipe
+      (recipeheader
+        (NAME)
+        (parameters
+          (parameter
+            (NAME))
+          (variadic_parameters
+            (parameter
+              (NAME)))))
+      (NEWLINE)
+      (body
+        (INDENT)
+        (recipe_body
+          (line
+            (recipeline
+              (notcomment)
+              (NEWLINE))))
+        (MISSING DEDENT)))))
+
+================================================================================
+dependency expression
+================================================================================
+
+foo +bar: baz(bar)
+	body
+
+--------------------------------------------------------------------------------
+
+(source_file
+  (item
+    (eol
+      (NEWLINE)))
+  (item
+    (recipe
+      (recipeheader
+        (NAME)
+        (parameters
+          (parameter
+            (MISSING NAME))
+          (variadic_parameters
+            (parameter
+              (NAME))))
+        (dependencies
+          (dependency
+            (NAME))
+          (dependency
+            (depcall
+              (NAME)))))
+      (NEWLINE)
+      (body
+        (INDENT)
+        (recipe_body
+          (line
+            (recipeline
+              (notcomment)
+              (NEWLINE))))
+        (MISSING DEDENT)))))
+
+================================================================================
+attribute FIXME(attributes): XFAIL no attribute support
+================================================================================
+
+[attribute]
+foo:
+  body
+
+--------------------------------------------------------------------------------
+
+(source_file
+  (item
+    (eol
+      (NEWLINE)))
+  (ERROR
+    (INDENT)
+    (NAME))
+  (item
+    (eol
+      (NEWLINE)))
+  (item
+    (recipe
+      (recipeheader
+        (NAME))
+      (NEWLINE)))
+  (ERROR
+    (NAME))
+  (item
+    (eol
+      (NEWLINE))))
+
+
+================================================================================
+shebang
+================================================================================
+
+foo:
+  #!/bin/sh
+  if [ -f "foo" ]; then
+    echo "foo {{var}}"
+  fi
+
+--------------------------------------------------------------------------------
+
+(source_file
+  (item
+    (eol
+      (NEWLINE)))
+  (item
+    (recipe
+      (recipeheader
+        (NAME))
+      (NEWLINE)
+      (body
+        (INDENT)
+        (shebang_recipe
+          (shebang
+            (TEXT)
+            (NEWLINE))
+          (shebang_body
+            (line
+              (recipeline
+                (notcomment)
+                (TEXT)
+                (TEXT)
+                (TEXT)
+                (TEXT)
+                (TEXT)
+                (NEWLINE)))
+            (line
+              (recipeline
+                (notcomment)
+                (TEXT)
+                (TEXT)
+                (NEWLINE)))
+            (line
+              (recipeline
+                (notcomment)
+                (NEWLINE)))))
+        (DEDENT)))))