|
| 1 | +package vm |
| 2 | + |
| 3 | +import ( |
| 4 | + "net" |
| 5 | + "os" |
| 6 | + "strings" |
| 7 | + "testing" |
| 8 | +) |
| 9 | + |
| 10 | +func TestParseExecEnv(t *testing.T) { |
| 11 | + tests := []struct { |
| 12 | + name string |
| 13 | + pairs []string |
| 14 | + want map[string]string |
| 15 | + wantErr string |
| 16 | + }{ |
| 17 | + {name: "empty", pairs: nil, want: nil}, |
| 18 | + {name: "single", pairs: []string{"FOO=bar"}, want: map[string]string{"FOO": "bar"}}, |
| 19 | + {name: "multi", pairs: []string{"A=1", "B=2"}, want: map[string]string{"A": "1", "B": "2"}}, |
| 20 | + {name: "value with =", pairs: []string{"URL=https://x?a=1"}, want: map[string]string{"URL": "https://x?a=1"}}, |
| 21 | + {name: "empty value allowed", pairs: []string{"K="}, want: map[string]string{"K": ""}}, |
| 22 | + {name: "missing =", pairs: []string{"FOO"}, wantErr: "must be KEY=VALUE"}, |
| 23 | + {name: "empty key", pairs: []string{"=v"}, wantErr: "must be KEY=VALUE"}, |
| 24 | + } |
| 25 | + for _, tt := range tests { |
| 26 | + t.Run(tt.name, func(t *testing.T) { |
| 27 | + got, err := parseExecEnv(tt.pairs) |
| 28 | + if tt.wantErr != "" { |
| 29 | + if err == nil || !strings.Contains(err.Error(), tt.wantErr) { |
| 30 | + t.Fatalf("got err=%v, want contains %q", err, tt.wantErr) |
| 31 | + } |
| 32 | + return |
| 33 | + } |
| 34 | + if err != nil { |
| 35 | + t.Fatalf("unexpected err: %v", err) |
| 36 | + } |
| 37 | + if len(got) != len(tt.want) { |
| 38 | + t.Fatalf("got %v, want %v", got, tt.want) |
| 39 | + } |
| 40 | + for k, v := range tt.want { |
| 41 | + if got[k] != v { |
| 42 | + t.Errorf("got[%q]=%q, want %q", k, got[k], v) |
| 43 | + } |
| 44 | + } |
| 45 | + }) |
| 46 | + } |
| 47 | +} |
| 48 | + |
| 49 | +func TestReadHybridVsockReply(t *testing.T) { |
| 50 | + tests := []struct { |
| 51 | + name string |
| 52 | + input string |
| 53 | + want string |
| 54 | + wantErr string |
| 55 | + }{ |
| 56 | + {name: "ok line", input: "OK 1024\n", want: "OK 1024\n"}, |
| 57 | + {name: "stops at newline (next bytes preserved)", input: "OK 5\nLEFTOVER", want: "OK 5\n"}, |
| 58 | + {name: "no newline EOF", input: "OK 5", wantErr: "EOF"}, |
| 59 | + {name: "overflow", input: strings.Repeat("a", hybridVsockReplyMax+1), wantErr: "exceeds"}, |
| 60 | + } |
| 61 | + for _, tt := range tests { |
| 62 | + t.Run(tt.name, func(t *testing.T) { |
| 63 | + got, err := readHybridVsockReply(strings.NewReader(tt.input)) |
| 64 | + if tt.wantErr != "" { |
| 65 | + if err == nil || !strings.Contains(err.Error(), tt.wantErr) { |
| 66 | + t.Fatalf("got err=%v, want contains %q", err, tt.wantErr) |
| 67 | + } |
| 68 | + return |
| 69 | + } |
| 70 | + if err != nil { |
| 71 | + t.Fatalf("unexpected err: %v", err) |
| 72 | + } |
| 73 | + if got != tt.want { |
| 74 | + t.Errorf("got %q, want %q", got, tt.want) |
| 75 | + } |
| 76 | + }) |
| 77 | + } |
| 78 | +} |
| 79 | + |
| 80 | +// TestDialHybridVsock_ConnectHandshake spins up an in-process listener that |
| 81 | +// speaks the CH/FC hybrid vsock dialect (CONNECT <port>\n → OK <port>\n). |
| 82 | +func TestDialHybridVsock_ConnectHandshake(t *testing.T) { |
| 83 | + // macOS caps unix socket paths at ~104 bytes, so t.TempDir() (long |
| 84 | + // /var/folders/... path) can overflow. Use os.CreateTemp + immediate unlink. |
| 85 | + f, err := os.CreateTemp("", "vsock-*.uds") |
| 86 | + if err != nil { |
| 87 | + t.Fatalf("create temp: %v", err) |
| 88 | + } |
| 89 | + sockPath := f.Name() |
| 90 | + _ = f.Close() |
| 91 | + _ = os.Remove(sockPath) |
| 92 | + defer os.Remove(sockPath) //nolint:errcheck |
| 93 | + |
| 94 | + ln, err := net.Listen("unix", sockPath) |
| 95 | + if err != nil { |
| 96 | + t.Fatalf("listen: %v", err) |
| 97 | + } |
| 98 | + defer ln.Close() //nolint:errcheck |
| 99 | + |
| 100 | + tests := []struct { |
| 101 | + name string |
| 102 | + reply string |
| 103 | + wantErr string |
| 104 | + }{ |
| 105 | + {name: "OK accepted", reply: "OK 9001\n"}, |
| 106 | + {name: "rejected", reply: "Failed\n", wantErr: "Failed"}, |
| 107 | + } |
| 108 | + for _, tt := range tests { |
| 109 | + t.Run(tt.name, func(t *testing.T) { |
| 110 | + done := make(chan struct{}) |
| 111 | + go func() { |
| 112 | + defer close(done) |
| 113 | + server, aErr := ln.Accept() |
| 114 | + if aErr != nil { |
| 115 | + return |
| 116 | + } |
| 117 | + defer server.Close() //nolint:errcheck |
| 118 | + buf := make([]byte, 64) |
| 119 | + n, _ := server.Read(buf) |
| 120 | + want := "CONNECT 1024\n" |
| 121 | + if string(buf[:n]) != want { |
| 122 | + t.Errorf("server got %q, want %q", buf[:n], want) |
| 123 | + } |
| 124 | + _, _ = server.Write([]byte(tt.reply)) |
| 125 | + }() |
| 126 | + |
| 127 | + conn, err := dialHybridVsock(sockPath, 1024) |
| 128 | + if tt.wantErr != "" { |
| 129 | + if err == nil || !strings.Contains(err.Error(), tt.wantErr) { |
| 130 | + t.Fatalf("got err=%v, want contains %q", err, tt.wantErr) |
| 131 | + } |
| 132 | + <-done |
| 133 | + return |
| 134 | + } |
| 135 | + if err != nil { |
| 136 | + t.Fatalf("unexpected err: %v", err) |
| 137 | + } |
| 138 | + _ = conn.Close() |
| 139 | + <-done |
| 140 | + }) |
| 141 | + } |
| 142 | +} |
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