Fixing some issues found by the linter

.github/workflows/golangci-lint.yml

@@ -0,0 +1,54 @@
+name: golangci-lint
+on:
+  push:
+    branches: [ "master" ]
+  pull_request:
+
+permissions:
+  contents: read
+  # Optional: allow read access to pull request. Use with `only-new-issues` option.
+  # pull-requests: read
+
+jobs:
+  golangci:
+    name: lint
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-go@v5
+        with:
+          go-version: "1.21"
+          cache: false
+      - name: golangci-lint
+        uses: golangci/golangci-lint-action@v4
+        with:
+          # Require: The version of golangci-lint to use.
+          # When `install-mode` is `binary` (default) the value can be v1.2 or v1.2.3 or `latest` to use the latest version.
+          # When `install-mode` is `goinstall` the value can be v1.2.3, `latest`, or the hash of a commit.
+          version: v1.54
+
+          # Optional: working directory, useful for monorepos
+          working-directory: ./backend
+
+          # Optional: golangci-lint command line arguments.
+          #
+          # Note: By default, the `.golangci.yml` file should be at the root of the repository.
+          # The location of the configuration file can be changed by using `--config=`
+          # args: --timeout=30m --config=/my/path/.golangci.yml --issues-exit-code=0
+
+          # Optional: show only new issues if it's a pull request. The default value is `false`.
+          # only-new-issues: true
+
+          # Optional: if set to true, then all caching functionality will be completely disabled,
+          #           takes precedence over all other caching options.
+          # skip-cache: true
+
+          # Optional: if set to true, then the action won't cache or restore ~/go/pkg.
+          # skip-pkg-cache: true
+
+          # Optional: if set to true, then the action won't cache or restore ~/.cache/go-build.
+          # skip-build-cache: true
+
+          # Optional: The mode to install golangci-lint. It can be 'binary' or 'goinstall'.
+          # install-mode: "goinstall"

.github/workflows/node.js.yml

@@ -32,5 +32,6 @@ jobs:
         cache: 'npm'
         cache-dependency-path: '**/package-lock.json'
     - run: npm ci
+    - run: npm run lint
     - run: npm run build --if-present
     - run: npm test

backend/Makefile

@@ -62,6 +62,10 @@ backup:
 # Format
 fmt:
 	$(GOCMD) fmt ./...
+
+# Lint
+lint:
+	golangci-lint run ./...
 	
 # Default target
 default: build	

backend/cmd/main.go

@@ -15,7 +15,7 @@ func main() {
 	conf, err := config.ReadConfigFromFile("config.toml")
 	if err != nil {
 		conf = config.NewConfig()
-		conf.WriteConfigToFile("config.toml")
+		_ = conf.WriteConfigToFile("config.toml")
 	}
 
 	// Pretty print the current config

backend/internal/database/db.go

@@ -104,6 +104,9 @@ func (d *Db) Migrate(dirname string) error {
 		log.Println("Executed SQL file:", file.Name())
 	}
 
-	tr.Commit()
+	if tr.Commit() != nil {
+		return err
+	}
+
 	return nil
 }

backend/internal/database/db_test.go

@@ -36,7 +36,9 @@ func TestDbGetUserId(t *testing.T) {
 	if err != nil {
 		t.Error("setupState failed:", err)
 	}
-	db.AddUser("test", "password")
+	if db.AddUser("test", "password") != nil {
+		t.Error("AddUser failed")
+	}
 
 	var id int
 

frontend/.eslintrc.cjs

@@ -9,7 +9,7 @@ module.exports = {
     'plugin:react-hooks/recommended',
     'plugin:prettier/recommended',
   ],
-  ignorePatterns: ['dist', '.eslintrc.cjs', 'tailwind.config.js', 'postcss.config.js'],
+  ignorePatterns: ['dist', '.eslintrc.cjs', 'tailwind.config.js', 'postcss.config.js', 'jest.config.cjs'],
   parser: '@typescript-eslint/parser',
   plugins: ['react-refresh', 'prettier'],
   rules: {

frontend/jest.config.cjs

@@ -0,0 +1,5 @@
+module.exports = {
+    transform: {
+        '^.+\\.(t|j)sx?$': '@swc/jest',
+    },
+}

frontend/package.json

@@ -8,13 +8,17 @@
     "build": "tsc && vite build",
     "lint": "eslint . --ext ts,tsx --report-unused-disable-directives --max-warnings 0",
     "preview": "vite preview",
-    "format": "prettier --config .prettierrc '**/*.ts' '**/*.tsx' '**/*.js' '**/*.json' --write"
+    "format": "prettier --config .prettierrc '**/*.ts' '**/*.tsx' '**/*.js' '**/*.json' --write",
+    "test": "jest"
   },
   "dependencies": {
     "react": "^18.2.0",
     "react-dom": "^18.2.0"
   },
   "devDependencies": {
+    "@swc/core": "^1.4.2",
+    "@swc/jest": "^0.2.36",
+    "@types/jest": "^29.5.12",
     "@types/react": "^18.2.55",
     "@types/react-dom": "^18.2.19",
     "@typescript-eslint/eslint-plugin": "^6.21.0",
@@ -27,8 +31,10 @@
     "eslint-plugin-react": "^7.33.2",
     "eslint-plugin-react-hooks": "^4.6.0",
     "eslint-plugin-react-refresh": "^0.4.5",
+    "jest": "^29.7.0",
     "postcss": "^8.4.35",
     "prettier": "3.2.5",
+    "react-test-renderer": "^18.2.0",
     "tailwindcss": "^3.4.1",
     "typescript": "^5.2.2",
     "vite": "^5.1.0"

frontend/src/Components/__tests__/CountButton.test.ts

@@ -0,0 +1,12 @@
+import { describe, expect, test } from "@jest/globals";
+
+function sum(a: number, b: number): number {
+  return a + b;
+}
+
+// This is obviously not testing the proper component
+describe("sum module", () => {
+  test("adds 1 + 2 to equal 3", () => {
+    expect(sum(1, 1)).toBe(2);
+  });
+});