Add debug output

Signed-off-by: Dimitris Karakasilis <dimitris@karakasilis.me>

tests/tests_suite_test.go

@@ -9,6 +9,7 @@ import (
 	"net/http"
 	"os"
 	"os/exec"
+	"path"
 	"strconv"
 	"strings"
 	"testing"
@@ -145,6 +146,11 @@ func startVM(iso string) (context.Context, VM) {
 	vm := NewVM(m, stateDir)
 
 	ctx, err := vm.Start(context.Background())
+	if err != nil {
+		so, _ := os.ReadFile(path.Join(stateDir, "stdout"))
+		se, _ := os.ReadFile(path.Join(stateDir, "stderr"))
+		fmt.Printf("An error occured.\nStderr = %+v\nStdout = %+v\n", string(se), string(so))
+	}
 	Expect(err).ToNot(HaveOccurred())
 
 	return ctx, vm