aboutsummaryrefslogtreecommitdiffstats
path: root/cmd/swarm/swarm-snapshot/create_test.go
blob: 5ade096c33341301aaff0d7f5f7cf68a2579f8c7 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
// Copyright 2018 The go-ethereum Authors
// This file is part of go-ethereum.
//
// go-ethereum is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// go-ethereum is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with go-ethereum. If not, see <http://www.gnu.org/licenses/>.

package main

import (
    "encoding/json"
    "fmt"
    "io/ioutil"
    "os"
    "runtime"
    "sort"
    "strconv"
    "strings"
    "testing"

    "github.com/dexon-foundation/dexon/p2p/simulations"
)

// TestSnapshotCreate is a high level e2e test that tests for snapshot generation.
// It runs a few "create" commands with different flag values and loads generated
// snapshot files to validate their content.
func TestSnapshotCreate(t *testing.T) {
    if runtime.GOOS == "windows" {
        t.Skip()
    }

    for _, v := range []struct {
        name     string
        nodes    int
        services string
    }{
        {
            name: "defaults",
        },
        {
            name:  "more nodes",
            nodes: defaultNodes + 5,
        },
        {
            name:     "services",
            services: "stream,pss,zorglub",
        },
        {
            name:     "services with bzz",
            services: "bzz,pss",
        },
    } {
        t.Run(v.name, func(t *testing.T) {
            t.Parallel()

            file, err := ioutil.TempFile("", "swarm-snapshot")
            if err != nil {
                t.Fatal(err)
            }
            defer os.Remove(file.Name())

            if err = file.Close(); err != nil {
                t.Error(err)
            }

            args := []string{"create"}
            if v.nodes > 0 {
                args = append(args, "--nodes", strconv.Itoa(v.nodes))
            }
            if v.services != "" {
                args = append(args, "--services", v.services)
            }
            testCmd := runSnapshot(t, append(args, file.Name())...)

            testCmd.ExpectExit()
            if code := testCmd.ExitStatus(); code != 0 {
                t.Fatalf("command exit code %v, expected 0", code)
            }

            f, err := os.Open(file.Name())
            if err != nil {
                t.Fatal(err)
            }
            defer func() {
                err := f.Close()
                if err != nil {
                    t.Error("closing snapshot file", "err", err)
                }
            }()

            b, err := ioutil.ReadAll(f)
            if err != nil {
                t.Fatal(err)
            }
            var snap simulations.Snapshot
            err = json.Unmarshal(b, &snap)
            if err != nil {
                t.Fatal(err)
            }

            wantNodes := v.nodes
            if wantNodes == 0 {
                wantNodes = defaultNodes
            }
            gotNodes := len(snap.Nodes)
            if gotNodes != wantNodes {
                t.Errorf("got %v nodes, want %v", gotNodes, wantNodes)
            }

            if len(snap.Conns) == 0 {
                t.Error("no connections in a snapshot")
            }

            var wantServices []string
            if v.services != "" {
                wantServices = strings.Split(v.services, ",")
            } else {
                wantServices = []string{"bzz"}
            }
            // sort service names so they can be comparable
            // as strings to every node sorted services
            sort.Strings(wantServices)

            for i, n := range snap.Nodes {
                gotServices := n.Node.Config.Services
                sort.Strings(gotServices)
                if fmt.Sprint(gotServices) != fmt.Sprint(wantServices) {
                    t.Errorf("got services %v for node %v, want %v", gotServices, i, wantServices)
                }
            }

        })
    }
}