test: add tests for solver

package.json

@@ -5,9 +5,12 @@
 	},
 	"dependencies": {
 		"@eslint/js": "^9.29.0",
+		"@jest/globals": "^30.0.3",
+		"@swc/jest": "^0.2.38",
 		"@types/node": "^24.0.4",
 		"eslint": "^9.29.0",
 		"globals": "^16.2.0",
+		"jest": "^30.0.3",
 		"prettier": "^3.6.0",
 		"turbo": "^2.5.4",
 		"typescript": "^5.8.3",

pkgs/solver/jest.config.js

@@ -0,0 +1,6 @@
+/** @type {import('jest').Config} */
+module.exports = {
+	transform: {
+		"^.+\\.(t|j)sx?$": "@swc/jest",
+	},
+};

pkgs/solver/package.json

@@ -4,6 +4,7 @@
 	"module": "dist/lib.js",
 	"types": "dist/lib.d.ts",
 	"scripts": {
-		"build": "tsc -p tsconfig.build.json"
+		"build": "tsc -p tsconfig.build.json",
+		"test": "jest"
 	}
 }

pkgs/solver/src/lib.spec.ts

@@ -0,0 +1,23 @@
+import { describe, it, expect } from "@jest/globals";
+import * as solver from "./lib";
+
+describe("solver", () => {
+	it("solveJs", async () => {
+		expect(
+			await solver.solveJs(
+				new Uint8Array([1, 2]),
+				new Uint8Array([3, 4]),
+			),
+		).toStrictEqual(new Uint8Array([45, 176, 0, 0, 0, 0, 0, 0]));
+	});
+
+	it("verify", async () => {
+		expect(
+			await solver.verify(
+				new Uint8Array([1, 2]),
+				new Uint8Array([3, 4]),
+				new Uint8Array([45, 176, 0, 0, 0, 0, 0, 0]),
+			),
+		).toStrictEqual(true);
+	});
+});

pkgs/solver/src/lib.ts

@@ -12,6 +12,7 @@ export async function solveJs(
 		true;
 		i++
 	) {
+		// using little-endian
 		solutionView.setBigUint64(0, i, true);
 
 		const hashArrayBuf = await crypto.subtle.digest("SHA-256", arr);