functional tests in golang

This is the work I had done last week for writing functional test in golang. Here I am providing the `output.json` file to `ioutil.ReadFile` and then comparing it with the stdout of `kompose convert`.

script/test/cmd/tests.go

@@ -0,0 +1,58 @@
+package main
+
+
+import (
+	"fmt"
+	"os"
+	"os/exec"
+	"io/ioutil"
+	"reflect"
+	"strings"
+)
+
+func ExpectSuccess(dockerComposeFile, result string) {
+	b, _ := ioutil.ReadFile(result)
+	output := string(b)
+	cmdName := "kompose"
+	cmdArgs := []string{"convert","-f",dockerComposeFile,"--stdout","-j"}
+	cmd, err := exec.Command(cmdName, cmdArgs...).CombinedOutput()
+	if err != nil {
+		fmt.Fprintln(os.Stderr, "Error Cmd", err)
+		os.Exit(1)
+	}
+	if reflect.DeepEqual(output, string(cmd)){
+		fmt.Println("Output matches")
+	} else {
+		fmt.Println("Output not matches")
+	}
+}
+
+func ExpectSuccessAndWarning(dockerComposeFile, result string) {
+	warning := "WARN"
+	b, _ := ioutil.ReadFile(result)
+	output := string(b)
+	cmdName := "kompose"
+	cmdArgs := []string{"convert","--stdout","-f",dockerComposeFile,"-j"}
+	cmd, err := exec.Command(cmdName, cmdArgs...).CombinedOutput()
+	if err != nil {
+		fmt.Fprintln(os.Stderr, "Error Cmd", err)
+		os.Exit(1)
+	}
+	file := string(cmd)
+	if strings.Contains(file, warning){
+		str,err := exec.Command(cmdName, cmdArgs...).Output()
+		if err != nil {
+			fmt.Fprintln(os.Stderr, "Err Cmd", err)
+			os.Exit(1)
+		}
+		if reflect.DeepEqual(output,string(str)){
+			fmt.Println("Output matches")
+		} else {
+			fmt.Println("Output not matches")
+		}
+	}
+}
+func main() {
+	ExpectSuccess("sample.yml", "output.json")
+	ExpectSuccessAndWarning("docker-compose.yml", "warn.json")
+}