| 1 | // SPDX-License-Identifier: GPL-3.0-or-later |
| 2 | |
| 3 | package logs |
| 4 | |
| 5 | import ( |
| 6 | "strings" |
| 7 | "testing" |
| 8 | |
| 9 | "github.com/stretchr/testify/assert" |
| 10 | "github.com/stretchr/testify/require" |
| 11 | ) |
| 12 | |
| 13 | func TestNewJSONParser(t *testing.T) { |
| 14 | tests := map[string]struct { |
| 15 | config JSONConfig |
| 16 | wantErr bool |
| 17 | }{ |
| 18 | "empty config": { |
| 19 | config: JSONConfig{}, |
| 20 | wantErr: false, |
| 21 | }, |
| 22 | "with mappings": { |
| 23 | config: JSONConfig{Mapping: map[string]string{"from_field_1": "to_field_1"}}, |
| 24 | wantErr: false, |
| 25 | }, |
| 26 | } |
| 27 | |
| 28 | for name, test := range tests { |
| 29 | t.Run(name, func(t *testing.T) { |
| 30 | p, err := NewJSONParser(test.config, nil) |
| 31 | |
| 32 | if test.wantErr { |
| 33 | assert.Error(t, err) |
| 34 | assert.Nil(t, p) |
| 35 | } else { |
| 36 | assert.NoError(t, err) |
| 37 | assert.NotNil(t, p) |
| 38 | } |
| 39 | }) |
| 40 | } |
| 41 | } |
| 42 | |
| 43 | func TestJSONParser_ReadLine(t *testing.T) { |
| 44 | tests := map[string]struct { |
| 45 | config JSONConfig |
| 46 | input string |
| 47 | wantAssigned map[string]string |
| 48 | wantErr bool |
| 49 | }{ |
| 50 | "string value": { |
| 51 | input: `{ "string": "example.com" }`, |
| 52 | wantErr: false, |
| 53 | wantAssigned: map[string]string{ |
| 54 | "string": "example.com", |
| 55 | }, |
| 56 | }, |
| 57 | "int value": { |
| 58 | input: `{ "int": 1 }`, |
| 59 | wantErr: false, |
| 60 | wantAssigned: map[string]string{ |
| 61 | "int": "1", |
| 62 | }, |
| 63 | }, |
| 64 | "float value": { |
| 65 | input: `{ "float": 1.1 }`, |
| 66 | wantErr: false, |
| 67 | wantAssigned: map[string]string{ |
| 68 | "float": "1.1", |
| 69 | }, |
| 70 | }, |
| 71 | "string, int, float values": { |
| 72 | input: `{ "string": "example.com", "int": 1, "float": 1.1 }`, |
| 73 | wantErr: false, |
| 74 | wantAssigned: map[string]string{ |
| 75 | "string": "example.com", |
| 76 | "int": "1", |
| 77 | "float": "1.1", |
| 78 | }, |
| 79 | }, |
| 80 | "string, int, float values with mappings": { |
| 81 | config: JSONConfig{Mapping: map[string]string{ |
| 82 | "string": "STRING", |
| 83 | "int": "INT", |
| 84 | "float": "FLOAT", |
| 85 | }}, |
| 86 | input: `{ "string": "example.com", "int": 1, "float": 1.1 }`, |
| 87 | wantErr: false, |
| 88 | wantAssigned: map[string]string{ |
| 89 | "STRING": "example.com", |
| 90 | "INT": "1", |
| 91 | "FLOAT": "1.1", |
| 92 | }, |
| 93 | }, |
| 94 | "nested": { |
| 95 | input: `{"one":{"two":2,"three":{"four":4}},"five":5}`, |
| 96 | config: JSONConfig{Mapping: map[string]string{ |
| 97 | "one.two": "mapped_value", |
| 98 | }}, |
| 99 | wantErr: false, |
| 100 | wantAssigned: map[string]string{ |
| 101 | "mapped_value": "2", |
| 102 | "one.three.four": "4", |
| 103 | "five": "5", |
| 104 | }, |
| 105 | }, |
| 106 | "nested with array": { |
| 107 | input: `{"one":{"two":[2,22]},"five":5}`, |
| 108 | config: JSONConfig{Mapping: map[string]string{ |
| 109 | "one.two.1": "mapped_value", |
| 110 | }}, |
| 111 | wantErr: false, |
| 112 | wantAssigned: map[string]string{ |
| 113 | "one.two.0": "2", |
| 114 | "mapped_value": "22", |
| 115 | "five": "5", |
| 116 | }, |
| 117 | }, |
| 118 | "error on malformed JSON": { |
| 119 | input: `{ "host"": unquoted_string}`, |
| 120 | wantErr: true, |
| 121 | }, |
| 122 | "error on empty input": { |
| 123 | wantErr: true, |
| 124 | }, |
| 125 | } |
| 126 | |
| 127 | for name, test := range tests { |
| 128 | t.Run(name, func(t *testing.T) { |
| 129 | line := newLogLine() |
| 130 | in := strings.NewReader(test.input) |
| 131 | p, err := NewJSONParser(test.config, in) |
| 132 | require.NoError(t, err) |
| 133 | require.NotNil(t, p) |
| 134 | |
| 135 | err = p.ReadLine(line) |
| 136 | |
| 137 | if test.wantErr { |
| 138 | assert.Error(t, err) |
| 139 | } else { |
| 140 | require.NoError(t, err) |
| 141 | assert.Equal(t, test.wantAssigned, line.assigned) |
| 142 | } |
| 143 | }) |
| 144 | } |
| 145 | } |
| 146 | |
| 147 | func TestJSONParser_Parse(t *testing.T) { |
| 148 | tests := map[string]struct { |
| 149 | config JSONConfig |
| 150 | input string |
| 151 | wantAssigned map[string]string |
| 152 | wantErr bool |
| 153 | }{ |
| 154 | "string value": { |
| 155 | input: `{ "string": "example.com" }`, |
| 156 | wantErr: false, |
| 157 | wantAssigned: map[string]string{ |
| 158 | "string": "example.com", |
| 159 | }, |
| 160 | }, |
| 161 | "int value": { |
| 162 | input: `{ "int": 1 }`, |
| 163 | wantErr: false, |
| 164 | wantAssigned: map[string]string{ |
| 165 | "int": "1", |
| 166 | }, |
| 167 | }, |
| 168 | "float value": { |
| 169 | input: `{ "float": 1.1 }`, |
| 170 | wantErr: false, |
| 171 | wantAssigned: map[string]string{ |
| 172 | "float": "1.1", |
| 173 | }, |
| 174 | }, |
| 175 | "string, int, float values": { |
| 176 | input: `{ "string": "example.com", "int": 1, "float": 1.1 }`, |
| 177 | wantErr: false, |
| 178 | wantAssigned: map[string]string{ |
| 179 | "string": "example.com", |
| 180 | "int": "1", |
| 181 | "float": "1.1", |
| 182 | }, |
| 183 | }, |
| 184 | "string, int, float values with mappings": { |
| 185 | config: JSONConfig{Mapping: map[string]string{ |
| 186 | "string": "STRING", |
| 187 | "int": "INT", |
| 188 | "float": "FLOAT", |
| 189 | }}, |
| 190 | input: `{ "string": "example.com", "int": 1, "float": 1.1 }`, |
| 191 | wantErr: false, |
| 192 | wantAssigned: map[string]string{ |
| 193 | "STRING": "example.com", |
| 194 | "INT": "1", |
| 195 | "FLOAT": "1.1", |
| 196 | }, |
| 197 | }, |
| 198 | "error on malformed JSON": { |
| 199 | input: `{ "host"": unquoted_string}`, |
| 200 | wantErr: true, |
| 201 | }, |
| 202 | "error on empty input": { |
| 203 | wantErr: true, |
| 204 | }, |
| 205 | } |
| 206 | |
| 207 | for name, test := range tests { |
| 208 | t.Run(name, func(t *testing.T) { |
| 209 | line := newLogLine() |
| 210 | p, err := NewJSONParser(test.config, nil) |
| 211 | require.NoError(t, err) |
| 212 | require.NotNil(t, p) |
| 213 | |
| 214 | err = p.Parse([]byte(test.input), line) |
| 215 | |
| 216 | if test.wantErr { |
| 217 | assert.Error(t, err) |
| 218 | } else { |
| 219 | require.NoError(t, err) |
| 220 | assert.Equal(t, test.wantAssigned, line.assigned) |
| 221 | } |
| 222 | }) |
| 223 | } |
| 224 | } |