run/qemu: remove usb and device flags

refactor: move qemu to its own package
tests: implements end to end tests for the convert command with the following images: alpine:3.17, ubuntu:20.04, debian:11, centos:8

Signed-off-by: Adphi <philippe.adrien.nousse@gmail.com>

e2e/e2e_test.go

@@ -0,0 +1,144 @@
+// Copyright 2023 Linka Cloud  All rights reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package e2e
+
+import (
+	"bufio"
+	"bytes"
+	"context"
+	"io"
+	"os"
+	"path/filepath"
+	"strings"
+	"sync/atomic"
+	"testing"
+	"time"
+
+	require2 "github.com/stretchr/testify/require"
+
+	"go.linka.cloud/d2vm"
+	"go.linka.cloud/d2vm/pkg/docker"
+	"go.linka.cloud/d2vm/pkg/qemu"
+)
+
+type test struct {
+	name string
+	args []string
+}
+
+var images = []string{
+	"alpine:3.17",
+	"ubuntu:20.04",
+	"debian:11",
+	"centos:8",
+}
+
+func TestConvert(t *testing.T) {
+	require := require2.New(t)
+	tests := []test{
+		{
+			name: "single-partition",
+		},
+		{
+			name: "split-boot",
+			args: []string{"--split-boot"},
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			// t.Parallel()
+			dir := filepath.Join("/tmp", "d2vm-e2e", tt.name)
+			require.NoError(os.MkdirAll(dir, os.ModePerm))
+
+			defer os.RemoveAll(dir)
+			for _, i := range images {
+				t.Run(i, func(t *testing.T) {
+					ctx, cancel := context.WithCancel(context.Background())
+					defer cancel()
+
+					// t.Parallel()
+					require := require2.New(t)
+
+					out := filepath.Join(dir, strings.NewReplacer(":", "-", ".", "-").Replace(i)+".qcow2")
+
+					if _, err := os.Stat(out); err == nil {
+						require.NoError(os.Remove(out))
+					}
+
+					require.NoError(docker.RunD2VM(ctx, d2vm.Image, d2vm.Version, dir, dir, "convert", append([]string{"-p", "root", "-o", "/out/" + filepath.Base(out), "-v", i}, tt.args...)...))
+
+					inr, inw := io.Pipe()
+					defer inr.Close()
+					outr, outw := io.Pipe()
+					defer outw.Close()
+					var success atomic.Bool
+					go func() {
+						time.AfterFunc(2*time.Minute, cancel)
+						defer inw.Close()
+						defer outr.Close()
+						login := []byte("login:")
+						password := []byte("Password:")
+						s := bufio.NewScanner(outr)
+						s.Split(func(data []byte, atEOF bool) (advance int, token []byte, err error) {
+							if i := bytes.Index(data, login); i >= 0 {
+								return i + len(login), login, nil
+							}
+							if i := bytes.Index(data, password); i >= 0 {
+								return i + len(password), password, nil
+							}
+							if atEOF {
+								return 0, nil, io.EOF
+							}
+							return 0, nil, nil
+						})
+						for s.Scan() {
+							b := s.Bytes()
+							if bytes.Contains(b, login) {
+								t.Logf("vm ready")
+								t.Logf("sending login")
+								if _, err := inw.Write([]byte("root\n")); err != nil {
+									t.Logf("failed to write login: %v", err)
+									cancel()
+								}
+							}
+							if bytes.Contains(b, password) {
+								t.Logf("sending password")
+								if _, err := inw.Write([]byte("root\n")); err != nil {
+									t.Logf("failed to write password: %v", err)
+									cancel()
+								}
+								time.Sleep(time.Second)
+								if _, err := inw.Write([]byte("poweroff\n")); err != nil {
+									t.Logf("failed to write poweroff: %v", err)
+									cancel()
+								}
+								success.Store(true)
+								return
+							}
+						}
+						if err := s.Err(); err != nil {
+							t.Logf("failed to scan output: %v", err)
+							cancel()
+						}
+					}()
+					if err := qemu.Run(ctx, out, qemu.WithStdin(inr), qemu.WithStdout(io.MultiWriter(outw, os.Stdout)), qemu.WithStderr(io.Discard)); err != nil && !success.Load() {
+						t.Fatalf("failed to run qemu: %v", err)
+					}
+				})
+			}
+		})
+	}
+}