added few testing

package.json

@@ -4,16 +4,19 @@
 	"description": "Manipulate UFW (Linux distribution only, works best on Ubuntu) via Node.",
 	"license": "MIT",
 	"repository": "ray-1337/node-ufw",
-  "funding": [
-    {
-      "type": "individual",
-      "url": "https://trakteer.id/ray1337"
-    },
-    {
-      "type": "paypal",
-      "url": "https://paypal.me/ray0001"
-    }
-  ],
+	"funding": [
+		{
+			"type": "individual",
+			"url": "https://trakteer.id/ray1337"
+		},
+		{
+			"type": "paypal",
+			"url": "https://paypal.me/ray0001"
+		}
+	],
+	"scripts": {
+		"test": "ava test.js"
+	},
 	"author": {
 		"name": "Hizkia Ray",
 		"email": "[email protected]",
@@ -22,8 +25,19 @@
 	"engines": {
 		"node": ">=14"
 	},
-	"files": ["./src/Main.js", "index.d.ts"],
-	"keywords": ["ufw", "firewall", "ubuntu", "sudo", "linux", "cli"],
-	"dependencies": {},
-	"devDependencies": {}
-}
+	"files": [
+		"./src/Main.js",
+		"index.d.ts"
+	],
+	"keywords": [
+		"ufw",
+		"firewall",
+		"ubuntu",
+		"sudo",
+		"linux",
+		"cli"
+	],
+	"devDependencies": {
+		"ava": "^4.2.0"
+	}
+}

test.js

@@ -0,0 +1,42 @@
+const test = require("ava");
+const nodeUfw = require("./src/Main");
+
+test("exceeded port", async (t) => {
+  await t.throwsAsync(async () => {
+    await nodeUfw.allow.port(12341242);
+  }, {instanceOf: Error, message: 'Error: Exceeded port limit.'});
+
+  await t.throwsAsync(async () => {
+    await nodeUfw.deny.port(12341242);
+  }, {instanceOf: Error, message: 'Error: Exceeded port limit.'});
+});
+
+test("wrongish", async (t) => {
+  // port checking
+  await t.throwsAsync(async () => {await nodeUfw.allow.port("SADOASD")}, {instanceOf: Error, message: "Error: The port must be type of number."});
+  await t.throwsAsync(async () => {await nodeUfw.deny.port("ASMJDKNSC")}, {instanceOf: Error, message: "Error: The port must be type of number."});
+
+  // protocol checking
+  await t.throwsAsync(async () => {await nodeUfw.allow.port(12, 123124)}, {instanceOf: Error, message: "Error: The protocol must be type of string."});
+  await t.throwsAsync(async () => {await nodeUfw.deny.port(12, 123124)}, {instanceOf: Error, message: "Error: The protocol must be type of string."});
+
+  // wrong protocol
+  await t.throwsAsync(async () => {await nodeUfw.allow.port(12, "SDSD")}, {instanceOf: Error, message: 'Error: The protocol must be either "tcp" or "udp"'});
+  await t.throwsAsync(async () => {await nodeUfw.deny.port(12, "SDSD")}, {instanceOf: Error, message: 'Error: The protocol must be either "tcp" or "udp"'});
+});
+
+test("status raw cond", async (t) => {
+  t.pass(await nodeUfw.status(true));
+});
+
+test("parsed status", async (t) => {
+  t.pass(await nodeUfw.status());
+});
+
+test("sfw disabled", async (t) => {
+  t.true(await nodeUfw.disable());
+});
+
+test("sfw enabled", async (t) => {
+  t.true(await nodeUfw.enable());
+});