Add testutils/jaillover to assist testing process spawning

Co-authored-by: Roberto Abdelkader Martínez Pérez <robertomartinezp@gmail.com>

testutils/jaillover/main.go

@@ -0,0 +1,35 @@
+package main
+
+import (
+	"encoding/json"
+	"fmt"
+	"log"
+	"os"
+	"strings"
+)
+
+type Output struct {
+	Cmdline []string          `json:"cmdline"`
+	Env     map[string]string `json:"env"`
+}
+
+func getEnvMap() map[string]string {
+	env := make(map[string]string)
+	for _, e := range os.Environ() {
+		s := strings.SplitN(e, "=", 2)
+		env[s[0]] = s[1]
+	}
+	return env
+}
+
+func main() {
+	o := Output{
+		Cmdline: os.Args,
+		Env:     getEnvMap(),
+	}
+	res, err := json.Marshal(o)
+	if err != nil {
+		log.Fatalf("JSON marshal failed %+v", err)
+	}
+	fmt.Println(string(res))
+}