diff --git a/tests/test.go b/tests/test.go
index 3926f7c..48b3bb2 100644
--- a/tests/test.go
+++ b/tests/test.go
@@ -1,23 +1,28 @@
 package main
 
 import (
+	"crypto/tls"
 	"fmt"
 	"io"
-	"os"
 	"log"
-	"time"
 	"net/http"
-	"crypto/tls"
+	"os"
+	"time"
 )
 
-var Red = "\033[31m" 
-var Reset = "\033[0m"
-var Green = "\033[32m"
-var Yellow = "\033[33m"
+// Color output constants.
+const (
+	Red    = "\033[31m"
+	Reset  = "\033[0m"
+	Green  = "\033[32m"
+	Yellow = "\033[33m"
+)
+
+// User-Agent header used in requests.
+const UserAgent = "Mozilla/5.0 (X11; Linux x86_64; rv:125.0) Gecko/20100101 Firefox/125.0"
 
 func Mode0(url string) {
-	
-	fmt.Println(Yellow + "[*] Testing URL:", url + Reset)
+	fmt.Println(Yellow+"[*] Testing URL:", url+Reset)
 	fmt.Println(Yellow + "[*] Mode: 0 (Status Code)" + Reset)
 
 	transport := &http.Transport{
@@ -25,35 +30,32 @@ func Mode0(url string) {
 			MinVersion: tls.VersionTLS12,
 		},
 	}
-	
+
 	client := &http.Client{
 		Timeout:   85 * time.Second,
 		Transport: transport,
 	}
 
-	req, err := http.NewRequest("GET", url, nil)
-	if err!= nil {
-    log.Fatal(err)
-  }
+	req, err := http.NewRequest(http.MethodGet, url, nil)
+	if err != nil {
+		log.Fatal(err)
+	}
 
-	req.Header.Set("User-Agent", "Mozilla/5.0 (X11; Linux x86_64; rv:125.0) Gecko/20100101 Firefox/125.0")
+	req.Header.Set("User-Agent", UserAgent)
 
 	res, err := client.Do(req)
-	if err!= nil {
-    log.Fatal(err)
-  }
+	if err != nil {
+		log.Fatal(err)
+	}
 
 	defer res.Body.Close()
 
-	fmt.Println(Green + "[+] Response:", res.Status + Reset)
-	fmt.Println(Green + "[+] Response URL:", res.Request.URL)
-
-	os.Exit(0)
+	fmt.Println(Green+"[+] Response:", res.Status+Reset)
+	fmt.Println(Green+"[+] Response URL:", res.Request.URL)
 }
 
 func Mode1(url string) {
-	
-	fmt.Println(Yellow + "[*] Testing URL:", url + Reset)
+	fmt.Println(Yellow+"[*] Testing URL:", url+Reset)
 	fmt.Println(Yellow + "[*] Mode: 1 (Response Body)" + Reset)
 
 	transport := &http.Transport{
@@ -61,41 +63,39 @@ func Mode1(url string) {
 			MinVersion: tls.VersionTLS12,
 		},
 	}
-	
+
 	client := &http.Client{
 		Timeout:   85 * time.Second,
 		Transport: transport,
 	}
 
-	req, err := http.NewRequest("GET", url, nil)
-	if err!= nil {
-    log.Fatal(err)
-  }
+	req, err := http.NewRequest(http.MethodGet, url, nil)
+	if err != nil {
+		log.Fatal(err)
+	}
 
-	req.Header.Set("User-Agent", "Mozilla/5.0 (X11; Linux x86_64; rv:125.0) Gecko/20100101 Firefox/125.0")
+	req.Header.Set("User-Agent", UserAgent)
 
 	res, err := client.Do(req)
-	if err!= nil {
-    log.Fatal(err)
-  }
+	if err != nil {
+		log.Fatal(err)
+	}
 
 	defer res.Body.Close()
 
 	body, err := io.ReadAll(res.Body)
-	if err!= nil {
-    log.Fatal(err)
-  }
+	if err != nil {
+		log.Fatal(err)
+	}
 
-	os.WriteFile("response.txt", body, os.FileMode(os.O_WRONLY))
-	fmt.Println(Green + "[+] Response:", res.Status + Reset)
-	fmt.Println(Green + "[+] Response URL:", res.Request.URL)
+	os.WriteFile("response.txt", body, os.ModePerm)
+	fmt.Println(Green+"[+] Response:", res.Status+Reset)
+	fmt.Println(Green+"[+] Response URL:", res.Request.URL)
 	fmt.Println(Green + "[+] Saved response to response.txt" + Reset)
-
-  os.Exit(0)
 }
 
 func Mode2(url string) {
-	fmt.Println(Yellow + "[*] Testing URL:", url + Reset)
+	fmt.Println(Yellow+"[*] Testing URL:", url+Reset)
 	fmt.Println(Yellow + "[*] Mode: 2 (Status Code Without Following Redirects)" + Reset)
 
 	transport := &http.Transport{
@@ -103,7 +103,7 @@ func Mode2(url string) {
 			MinVersion: tls.VersionTLS12,
 		},
 	}
-	
+
 	client := &http.Client{
 		Timeout:   85 * time.Second,
 		Transport: transport,
@@ -113,28 +113,26 @@ func Mode2(url string) {
 		return http.ErrUseLastResponse
 	}
 
-	req, err := http.NewRequest("GET", url, nil)
-	if err!= nil {
-    log.Fatal(err)
-  }
+	req, err := http.NewRequest(http.MethodGet, url, nil)
+	if err != nil {
+		log.Fatal(err)
+	}
 
-	req.Header.Set("User-Agent", "Mozilla/5.0 (X11; Linux x86_64; rv:125.0) Gecko/20100101 Firefox/125.0")
+	req.Header.Set("User-Agent", UserAgent)
 
 	res, err := client.Do(req)
-	if err!= nil {
-    log.Fatal(err)
-  }
+	if err != nil {
+		log.Fatal(err)
+	}
 
 	defer res.Body.Close()
 
-	fmt.Println(Green + "[+] Response:", res.Status + Reset)
-	fmt.Println(Green + "[+] Response URL:", res.Request.URL)
-	os.Exit(0)
+	fmt.Println(Green+"[+] Response:", res.Status+Reset)
+	fmt.Println(Green+"[+] Response URL:", res.Request.URL)
 }
 
 func Mode3(url string) {
-	
-	fmt.Println(Yellow + "[*] Testing URL:", url + Reset)
+	fmt.Println(Yellow+"[*] Testing URL:", url+Reset)
 	fmt.Println(Yellow + "[*] Mode: 3 (Response Body Without Following Redirects)" + Reset)
 
 	transport := &http.Transport{
@@ -142,7 +140,7 @@ func Mode3(url string) {
 			MinVersion: tls.VersionTLS12,
 		},
 	}
-	
+
 	client := &http.Client{
 		Timeout:   85 * time.Second,
 		Transport: transport,
@@ -152,55 +150,52 @@ func Mode3(url string) {
 		return http.ErrUseLastResponse
 	}
 
-	req, err := http.NewRequest("GET", url, nil)
-	if err!= nil {
-    log.Fatal(err)
-  }
+	req, err := http.NewRequest(http.MethodGet, url, nil)
+	if err != nil {
+		log.Fatal(err)
+	}
 
-	req.Header.Set("User-Agent", "Mozilla/5.0 (X11; Linux x86_64; rv:125.0) Gecko/20100101 Firefox/125.0")
+	req.Header.Set("User-Agent", UserAgent)
 
 	res, err := client.Do(req)
-	if err!= nil {
-    log.Fatal(err)
-  }
+	if err != nil {
+		log.Fatal(err)
+	}
 
 	defer res.Body.Close()
 
 	body, err := io.ReadAll(res.Body)
-	if err!= nil {
-    log.Fatal(err)
-  }
+	if err != nil {
+		log.Fatal(err)
+	}
 
-	os.WriteFile("response.txt", body, os.FileMode(os.O_WRONLY))
-	fmt.Println(Green + "[+] Response:", res.Status + Reset)
-	fmt.Println(Green + "[+] Response URL:", res.Request.URL)
+	os.WriteFile("response.txt", body, os.ModePerm)
+	fmt.Println(Green+"[+] Response:", res.Status+Reset)
+	fmt.Println(Green+"[+] Response URL:", res.Request.URL)
 	fmt.Println(Green + "[+] Saved response to response.txt" + Reset)
-
-	os.Exit(0)
-
 }
 
 func main() {
-	url := os.Args[1]
-	mode := os.Args[2]
-
-	if len(os.Args) != 3 {
-		fmt.Println(Red + "Usage: gosearch <url> <mode>\nIssues: https://github.com/ibnaleem/gosearch/issues" + Reset)
-    os.Exit(1)
-	} else if len(os.Args) == 2 {
-		fmt.Println(Red + "Mode not provided. Please provide either 0, 1, 2, or 3. Exiting..." + Reset)
-    os.Exit(1)
-	} else if len(os.Args) == 1 {
+	if len(os.Args) == 1 {
 		fmt.Println(Yellow + "Welcome to GoSearch's testing binary." + Reset)
 		fmt.Println(Yellow + "First, find a url containing a username." + Red + "Eg. https://instagram.com/zuck" + Reset)
 		fmt.Println(Yellow + "Then, provide the mode number you want to test against." + Red + "Eg. ./test https://instagram.com/zuck 0" + Reset)
 		fmt.Println(Yellow + "Modes:\n0: Status Code - Check if a website throws any status code errors for invalid usernames")
-    fmt.Println(Yellow + "1: Response Body - Check if the response body contains any errors for invalid usernames (e.g 'username not found')")
+		fmt.Println(Yellow + "1: Response Body - Check if the response body contains any errors for invalid usernames (e.g 'username not found')")
 		fmt.Println(Yellow + "2: Status Code (No Redirects) - Check if a website throws any status code errors for invalid usernames without following redirects")
 		fmt.Println(Yellow + "3: Response Body (No Redirects) - Check if the response body contains any errors for invalid usernames (e.g 'username not found') without following redirects")
 		os.Exit(1)
+	} else if len(os.Args) == 2 {
+		fmt.Println(Red + "Mode not provided. Please provide either 0, 1, 2, or 3. Exiting..." + Reset)
+		os.Exit(1)
+	} else if len(os.Args) > 3 {
+		fmt.Println(Red + "Usage: gosearch <url> <mode>\nIssues: https://github.com/ibnaleem/gosearch/issues" + Reset)
+		os.Exit(1)
 	}
 
+	url := os.Args[1]
+	mode := os.Args[2]
+
 	if mode == "0" {
 		Mode0(url)
 	} else if mode == "1" {
@@ -211,6 +206,6 @@ func main() {
 		Mode3(url)
 	} else {
 		fmt.Println(Red + "Invalid mode. Please provide either 0, 1, 2, or 3. Exiting..." + Reset)
-    os.Exit(1)
+		os.Exit(1)
 	}
 }