added first pass testing

.gitignore

@@ -0,0 +1,2 @@
+.vscode
+output

filelist.txt

@@ -1 +1,2 @@
-https://blog.badgerops.net/content/images/2020/03/badger.png
+https://blog.badgerops.net/content/images/2020/03/badger.png
+https://www.bobrossquotes.com/bobs/bob.png

main.go

@@ -48,8 +48,6 @@ func main() {
 
 			// for each url in given file, download the given file
 			for _, url := range rawFile {
-				// download the content
-				fmt.Println(" check out the values! ", url)
 				resp, err := http.Get(url)
 				if err != nil {
 					fmt.Println("Error downloading file:", url)

main_test.go

@@ -0,0 +1,63 @@
+package main
+
+import (
+	"fmt"
+	"io/ioutil"
+	"os"
+	"os/exec"
+	"path"
+	"path/filepath"
+	"testing"
+)
+
+func TestMain(t *testing.T) {
+	if os.Getenv("BE_CRASHER") == "1" {
+		// Create a temporary directory for testing
+		tempDir, err := os.MkdirTemp("", "synctool_test")
+		if err != nil {
+			t.Fatal("Failed to create temporary directory:", err)
+		}
+		defer os.RemoveAll(tempDir)
+
+		// Create a temporary input file with URLs
+		tempFile, err := ioutil.TempFile("", "urls.txt")
+		if err != nil {
+			t.Fatal("Failed to create temporary file:", err)
+		}
+		defer tempFile.Close()
+
+		// Write some URLs to the temporary input file
+		urls := []string{"https://blog.badgerops.net/content/images/2020/03/badger.png", "https://www.bobrossquotes.com/bobs/bob.png"}
+		for _, url := range urls {
+			_, err := tempFile.WriteString(url + "\n")
+			if err != nil {
+				t.Fatal("Failed to write to temporary file:", err)
+			}
+		}
+
+		// Run the main function with the temporary input file and output directory
+		fmt.Println(("The temp file name is: " + tempFile.Name()))
+		os.Args = []string{"downloader", "-f", tempFile.Name(), "-o", "./synctool_test"}
+		main()
+
+		// Check if the files were downloaded and saved correctly
+		for _, url := range urls {
+			filePath := filepath.Join("./synctool_test", path.Base(url))
+			if _, err := os.Stat(filePath); os.IsNotExist(err) {
+				t.Errorf("File not found: %s", filePath)
+			}
+		}
+		return
+	}
+}
+func TestOsExit(t *testing.T) {
+	if os.Getenv("BE_CRASHER") != "1" {
+		cmd := exec.Command(os.Args[0], "-test.run=TestOsExit")
+		cmd.Env = append(os.Environ(), "BE_CRASHER=1")
+		err := cmd.Run()
+		if e, ok := err.(*exec.ExitError); ok && !e.Success() {
+			return
+		}
+		t.Fatalf("Process ran with err %v, want os.Exit(1)", err)
+	}
+}