feat: add coverage

.github/workflows/test.yml

@@ -16,3 +16,7 @@ jobs:
         run: |
           pnpm install --no-frozen-lockfile
           pnpm ci-test
+
+      - shell: bash
+        run: |
+          pnpm run check-coverage

.gitignore

@@ -5,3 +5,5 @@ docs/
 node_modules/
 
 **/tsconfig.tsbuildinfo
+coverage/*
+.vscode/*

check-coverage.ts

@@ -0,0 +1,51 @@
+import * as fs from "node:fs";
+import path from "node:path";
+const lcovPath = path.resolve("./coverage/lcov.info");
+const threshold = 20; // Set your desired threshold
+
+function parseCoverage(lcovFilePath: string): number {
+	if (!fs.existsSync(lcovFilePath)) {
+		throw new Error(`File not found: ${lcovFilePath}`);
+	}
+
+	const lcovData = fs.readFileSync(lcovFilePath, "utf-8");
+	const totalLinesMatch = lcovData.match(/LF:(\d+)/g);
+	const coveredLinesMatch = lcovData.match(/LH:(\d+)/g);
+
+	if (!totalLinesMatch || !coveredLinesMatch) {
+		throw new Error("Coverage data is missing or invalid in lcov.info");
+	}
+
+	const totalLines = totalLinesMatch
+		.map((line) => Number.parseInt(line.split(":")[1], 10))
+		.reduce((sum, value) => sum + value, 0);
+
+	const coveredLines = coveredLinesMatch
+		.map((line) => Number.parseInt(line.split(":")[1], 10))
+		.reduce((sum, value) => sum + value, 0);
+
+	return (coveredLines / totalLines) * 100;
+}
+
+try {
+	const coveragePercentage = parseCoverage(lcovPath);
+	console.log(`Total Coverage: ${coveragePercentage.toFixed(2)}%`);
+
+	if (coveragePercentage < threshold) {
+		console.error(
+			`Coverage (${coveragePercentage.toFixed(
+				2,
+			)}%) is below the threshold (${threshold}%).`,
+		);
+		process.exit(1); // Exit with an error code if threshold is not met
+	} else {
+		console.log(
+			`Coverage (${coveragePercentage.toFixed(
+				2,
+			)}%) meets the threshold (${threshold}%).`,
+		);
+	}
+} catch (error) {
+	console.error(`Error: ${(error as Error).message}`);
+	process.exit(1); // Exit with an error code for any script failure
+}

package.json

@@ -28,12 +28,14 @@
 		"release": "release-it",
 		"test": "vitest",
 		"ci-test": "vitest --exclude **/node.test.ts",
-		"watch": "pnpm --parallel --filter '@ts-drp/*' watch"
+		"watch": "pnpm --parallel --filter '@ts-drp/*' watch",
+		"check-coverage": "npx ts-node check-coverage.ts"
 	},
 	"devDependencies": {
 		"@biomejs/biome": "^1.8.3",
 		"@release-it-plugins/workspaces": "^4.2.0",
 		"@types/node": "^22.5.4",
+		"@vitest/coverage-v8": "2.1.8",
 		"assemblyscript": "^0.27.29",
 		"release-it": "^17.6.0",
 		"ts-proto": "^2.2.4",