| 1 | // SPDX-License-Identifier: GPL-3.0-or-later |
| 2 | |
| 3 | package filepersister |
| 4 | |
| 5 | import ( |
| 6 | "context" |
| 7 | "errors" |
| 8 | "os" |
| 9 | "path" |
| 10 | "strings" |
| 11 | "testing" |
| 12 | "time" |
| 13 | |
| 14 | "github.com/stretchr/testify/assert" |
| 15 | "github.com/stretchr/testify/require" |
| 16 | ) |
| 17 | |
| 18 | func TestNew(t *testing.T) { |
| 19 | tests := map[string]struct { |
| 20 | path string |
| 21 | wantErr bool |
| 22 | }{ |
| 23 | "empty filepath": { |
| 24 | wantErr: true, |
| 25 | path: "", |
| 26 | }, |
| 27 | "not empty filepath": { |
| 28 | wantErr: false, |
| 29 | path: "testdata/test.json", |
| 30 | }, |
| 31 | } |
| 32 | |
| 33 | for name, test := range tests { |
| 34 | t.Run(name, func(t *testing.T) { |
| 35 | p := New(test.path) |
| 36 | require.NotNil(t, p) |
| 37 | }) |
| 38 | } |
| 39 | } |
| 40 | |
| 41 | func TestPersister_Run(t *testing.T) { |
| 42 | tests := map[string]struct { |
| 43 | wantErr bool |
| 44 | wantFile string |
| 45 | }{ |
| 46 | "no save because data bytes error": { |
| 47 | wantErr: true, |
| 48 | }, |
| 49 | "successful save": { |
| 50 | wantErr: false, |
| 51 | wantFile: ` |
| 52 | { |
| 53 | "module1": { |
| 54 | "name1:17896517344060997937": "ok" |
| 55 | }, |
| 56 | "module2": { |
| 57 | "name2:14519194242031159283": "ok" |
| 58 | } |
| 59 | } |
| 60 | `, |
| 61 | }, |
| 62 | } |
| 63 | |
| 64 | for name, test := range tests { |
| 65 | t.Run(name, func(t *testing.T) { |
| 66 | dir, err := os.MkdirTemp(os.TempDir(), "netdata-go.d-test-filepersister-run") |
| 67 | require.NoError(t, err) |
| 68 | defer func() { assert.NoError(t, os.RemoveAll(dir)) }() |
| 69 | |
| 70 | filename := path.Join(dir, "filestatus") |
| 71 | |
| 72 | p := New(filename) |
| 73 | |
| 74 | data := newMockData(test.wantFile) |
| 75 | data.wantError = test.wantErr |
| 76 | |
| 77 | ctx, cancel := context.WithCancel(context.Background()) |
| 78 | done := make(chan struct{}) |
| 79 | go func() { |
| 80 | defer close(done) |
| 81 | p.Run(ctx, data) |
| 82 | }() |
| 83 | |
| 84 | cancel() |
| 85 | |
| 86 | timeout := time.Second * 5 |
| 87 | tk := time.NewTimer(timeout) |
| 88 | defer tk.Stop() |
| 89 | |
| 90 | select { |
| 91 | case <-done: |
| 92 | case <-tk.C: |
| 93 | t.Errorf("timed out after %s", timeout) |
| 94 | } |
| 95 | |
| 96 | bs, err := os.ReadFile(filename) |
| 97 | |
| 98 | if test.wantErr { |
| 99 | require.Error(t, err) |
| 100 | } else { |
| 101 | require.NoError(t, err) |
| 102 | assert.Equal(t, strings.TrimSpace(test.wantFile), strings.TrimSpace(string(bs))) |
| 103 | } |
| 104 | }) |
| 105 | } |
| 106 | } |
| 107 | |
| 108 | func newMockData(s string) *mockData { |
| 109 | m := &mockData{ |
| 110 | data: s, |
| 111 | ch: make(chan struct{}, 1), |
| 112 | } |
| 113 | m.ch <- struct{}{} |
| 114 | |
| 115 | return m |
| 116 | } |
| 117 | |
| 118 | type mockData struct { |
| 119 | data string |
| 120 | ch chan struct{} |
| 121 | wantError bool |
| 122 | } |
| 123 | |
| 124 | func (m *mockData) Bytes() ([]byte, error) { |
| 125 | if m.wantError { |
| 126 | return nil, errors.New("mockData.Bytes() mock error") |
| 127 | } |
| 128 | return []byte(m.data), nil |
| 129 | } |
| 130 | |
| 131 | func (m *mockData) Updated() <-chan struct{} { |
| 132 | return m.ch |
| 133 | } |