| 1 | // SPDX-License-Identifier: GPL-3.0-or-later |
| 2 | |
| 3 | package logs |
| 4 | |
| 5 | import ( |
| 6 | "errors" |
| 7 | "strings" |
| 8 | "testing" |
| 9 | |
| 10 | "github.com/stretchr/testify/assert" |
| 11 | "github.com/stretchr/testify/require" |
| 12 | ) |
| 13 | |
| 14 | func TestNewRegExpParser(t *testing.T) { |
| 15 | tests := []struct { |
| 16 | name string |
| 17 | pattern string |
| 18 | wantErr bool |
| 19 | }{ |
| 20 | {name: "valid pattern", pattern: `(?P<A>\d+) (?P<B>\d+)`}, |
| 21 | {name: "no names subgroups in pattern", pattern: `(?:\d+) (?:\d+)`, wantErr: true}, |
| 22 | {name: "invalid pattern", pattern: `(((?P<A>\d+) (?P<B>\d+)`, wantErr: true}, |
| 23 | {name: "empty pattern", wantErr: true}, |
| 24 | } |
| 25 | |
| 26 | for _, tt := range tests { |
| 27 | t.Run(tt.name, func(t *testing.T) { |
| 28 | p, err := NewRegExpParser(RegExpConfig{Pattern: tt.pattern}, nil) |
| 29 | if tt.wantErr { |
| 30 | assert.Error(t, err) |
| 31 | assert.Nil(t, p) |
| 32 | } else { |
| 33 | assert.NoError(t, err) |
| 34 | assert.NotNil(t, p) |
| 35 | } |
| 36 | }) |
| 37 | } |
| 38 | } |
| 39 | |
| 40 | func TestRegExpParser_ReadLine(t *testing.T) { |
| 41 | tests := []struct { |
| 42 | name string |
| 43 | row string |
| 44 | pattern string |
| 45 | wantErr bool |
| 46 | wantParseErr bool |
| 47 | }{ |
| 48 | {name: "match and no error", row: "1 2", pattern: `(?P<A>\d+) (?P<B>\d+)`}, |
| 49 | {name: "match but error on assigning", row: "1 2", pattern: `(?P<A>\d+) (?P<ERR>\d+)`, wantErr: true, wantParseErr: true}, |
| 50 | {name: "not match", row: "A B", pattern: `(?P<A>\d+) (?P<B>\d+)`, wantErr: true, wantParseErr: true}, |
| 51 | {name: "not match multiline", row: "a b\n3 4", pattern: `(?P<A>\d+) (?P<B>\d+)`, wantErr: true, wantParseErr: true}, |
| 52 | {name: "error on reading EOF", row: "", pattern: `(?P<A>\d+) (?P<B>\d+)`, wantErr: true}, |
| 53 | } |
| 54 | |
| 55 | for _, tt := range tests { |
| 56 | t.Run(tt.name, func(t *testing.T) { |
| 57 | var line logLine |
| 58 | r := strings.NewReader(tt.row) |
| 59 | p, err := NewRegExpParser(RegExpConfig{Pattern: tt.pattern}, r) |
| 60 | require.NoError(t, err) |
| 61 | |
| 62 | err = p.ReadLine(&line) |
| 63 | if tt.wantErr { |
| 64 | require.Error(t, err) |
| 65 | if tt.wantParseErr { |
| 66 | assert.True(t, IsParseError(err)) |
| 67 | } else { |
| 68 | assert.False(t, IsParseError(err)) |
| 69 | } |
| 70 | } else { |
| 71 | assert.NoError(t, err) |
| 72 | } |
| 73 | }) |
| 74 | } |
| 75 | } |
| 76 | |
| 77 | func TestRegExpParser_Parse(t *testing.T) { |
| 78 | tests := []struct { |
| 79 | name string |
| 80 | row string |
| 81 | pattern string |
| 82 | wantErr bool |
| 83 | }{ |
| 84 | {name: "match and no error", row: "1 2", pattern: `(?P<A>\d+) (?P<B>\d+)`}, |
| 85 | {name: "match but error on assigning", row: "1 2", pattern: `(?P<A>\d+) (?P<ERR>\d+)`, wantErr: true}, |
| 86 | {name: "not match", row: "A B", pattern: `(?P<A>\d+) (?P<B>\d+)`, wantErr: true}, |
| 87 | } |
| 88 | |
| 89 | for _, tt := range tests { |
| 90 | t.Run(tt.name, func(t *testing.T) { |
| 91 | var line logLine |
| 92 | p, err := NewRegExpParser(RegExpConfig{Pattern: tt.pattern}, nil) |
| 93 | require.NoError(t, err) |
| 94 | |
| 95 | err = p.Parse([]byte(tt.row), &line) |
| 96 | if tt.wantErr { |
| 97 | require.Error(t, err) |
| 98 | assert.True(t, IsParseError(err)) |
| 99 | } else { |
| 100 | assert.NoError(t, err) |
| 101 | } |
| 102 | }) |
| 103 | } |
| 104 | } |
| 105 | |
| 106 | func TestRegExpParser_Info(t *testing.T) { |
| 107 | p, err := NewRegExpParser(RegExpConfig{Pattern: `(?P<A>\d+) (?P<B>\d+)`}, nil) |
| 108 | require.NoError(t, err) |
| 109 | assert.NotZero(t, p.Info()) |
| 110 | } |
| 111 | |
| 112 | type logLine struct { |
| 113 | assigned map[string]string |
| 114 | } |
| 115 | |
| 116 | func newLogLine() *logLine { |
| 117 | return &logLine{ |
| 118 | assigned: make(map[string]string), |
| 119 | } |
| 120 | } |
| 121 | |
| 122 | func (l *logLine) Assign(name, val string) error { |
| 123 | switch name { |
| 124 | case "$ERR", "ERR": |
| 125 | return errors.New("assign error") |
| 126 | } |
| 127 | if l.assigned != nil { |
| 128 | l.assigned[name] = val |
| 129 | } |
| 130 | return nil |
| 131 | } |