| 1 | package prometheus |
| 2 | |
| 3 | import ( |
| 4 | "math" |
| 5 | "testing" |
| 6 | |
| 7 | "github.com/prometheus/common/model" |
| 8 | "github.com/prometheus/prometheus/model/labels" |
| 9 | "github.com/stretchr/testify/assert" |
| 10 | ) |
| 11 | |
| 12 | func TestMetricFamilies_Len(t *testing.T) { |
| 13 | tests := map[string]struct { |
| 14 | mfs MetricFamilies |
| 15 | wantLen int |
| 16 | }{ |
| 17 | "initialized with two elements": { |
| 18 | mfs: MetricFamilies{"1": nil, "2": nil}, |
| 19 | wantLen: 2, |
| 20 | }, |
| 21 | "not initialized": { |
| 22 | mfs: nil, |
| 23 | wantLen: 0, |
| 24 | }, |
| 25 | } |
| 26 | |
| 27 | for name, test := range tests { |
| 28 | t.Run(name, func(t *testing.T) { |
| 29 | assert.Equal(t, test.mfs.Len(), test.wantLen) |
| 30 | }) |
| 31 | } |
| 32 | } |
| 33 | |
| 34 | func TestMetricFamilies_Get(t *testing.T) { |
| 35 | const n = "metric" |
| 36 | |
| 37 | tests := map[string]struct { |
| 38 | mfs MetricFamilies |
| 39 | wantMF *MetricFamily |
| 40 | }{ |
| 41 | "etric is found": { |
| 42 | mfs: MetricFamilies{n: &MetricFamily{name: n}}, |
| 43 | wantMF: &MetricFamily{name: n}, |
| 44 | }, |
| 45 | "metric is not found": { |
| 46 | mfs: MetricFamilies{"!" + n: &MetricFamily{name: n}}, |
| 47 | wantMF: nil, |
| 48 | }, |
| 49 | "not initialized": { |
| 50 | mfs: nil, |
| 51 | wantMF: nil, |
| 52 | }, |
| 53 | } |
| 54 | |
| 55 | for name, test := range tests { |
| 56 | t.Run(name, func(t *testing.T) { |
| 57 | assert.Equal(t, test.mfs.Get(n), test.wantMF) |
| 58 | }) |
| 59 | } |
| 60 | } |
| 61 | |
| 62 | func TestMetricFamilies_GetGauge(t *testing.T) { |
| 63 | const n = "metric" |
| 64 | |
| 65 | tests := map[string]struct { |
| 66 | mfs MetricFamilies |
| 67 | wantMF *MetricFamily |
| 68 | }{ |
| 69 | "metric is found and is Gauge": { |
| 70 | mfs: MetricFamilies{n: &MetricFamily{name: n, typ: model.MetricTypeGauge}}, |
| 71 | wantMF: &MetricFamily{name: n, typ: model.MetricTypeGauge}, |
| 72 | }, |
| 73 | "metric is found but it is not Gauge": { |
| 74 | mfs: MetricFamilies{n: &MetricFamily{name: n, typ: model.MetricTypeUnknown}}, |
| 75 | wantMF: nil, |
| 76 | }, |
| 77 | "metric is not found": { |
| 78 | mfs: MetricFamilies{"!" + n: &MetricFamily{name: n, typ: model.MetricTypeGauge}}, |
| 79 | wantMF: nil, |
| 80 | }, |
| 81 | "not initialized": { |
| 82 | mfs: nil, |
| 83 | wantMF: nil, |
| 84 | }, |
| 85 | } |
| 86 | |
| 87 | for name, test := range tests { |
| 88 | t.Run(name, func(t *testing.T) { |
| 89 | assert.Equal(t, test.mfs.GetGauge(n), test.wantMF) |
| 90 | }) |
| 91 | } |
| 92 | } |
| 93 | |
| 94 | func TestMetricFamilies_GetCounter(t *testing.T) { |
| 95 | const n = "metric" |
| 96 | |
| 97 | tests := map[string]struct { |
| 98 | mfs MetricFamilies |
| 99 | wantMF *MetricFamily |
| 100 | }{ |
| 101 | "metric is found and is Counter": { |
| 102 | mfs: MetricFamilies{n: &MetricFamily{name: n, typ: model.MetricTypeCounter}}, |
| 103 | wantMF: &MetricFamily{name: n, typ: model.MetricTypeCounter}, |
| 104 | }, |
| 105 | "metric is found but it is not Counter": { |
| 106 | mfs: MetricFamilies{n: &MetricFamily{name: n, typ: model.MetricTypeGauge}}, |
| 107 | wantMF: nil, |
| 108 | }, |
| 109 | "metric is not found": { |
| 110 | mfs: MetricFamilies{"!" + n: &MetricFamily{name: n, typ: model.MetricTypeGauge}}, |
| 111 | wantMF: nil, |
| 112 | }, |
| 113 | "not initialized": { |
| 114 | mfs: nil, |
| 115 | wantMF: nil, |
| 116 | }, |
| 117 | } |
| 118 | |
| 119 | for name, test := range tests { |
| 120 | t.Run(name, func(t *testing.T) { |
| 121 | assert.Equal(t, test.mfs.GetCounter(n), test.wantMF) |
| 122 | }) |
| 123 | } |
| 124 | } |
| 125 | |
| 126 | func TestMetricFamilies_GetSummary(t *testing.T) { |
| 127 | const n = "metric" |
| 128 | |
| 129 | tests := map[string]struct { |
| 130 | mfs MetricFamilies |
| 131 | wantMF *MetricFamily |
| 132 | }{ |
| 133 | "metric is found and is Summary": { |
| 134 | mfs: MetricFamilies{n: &MetricFamily{name: n, typ: model.MetricTypeSummary}}, |
| 135 | wantMF: &MetricFamily{name: n, typ: model.MetricTypeSummary}, |
| 136 | }, |
| 137 | "metric is found but it is not Summary": { |
| 138 | mfs: MetricFamilies{n: &MetricFamily{name: n, typ: model.MetricTypeGauge}}, |
| 139 | wantMF: nil, |
| 140 | }, |
| 141 | "metric is not found": { |
| 142 | mfs: MetricFamilies{"!" + n: &MetricFamily{name: n, typ: model.MetricTypeGauge}}, |
| 143 | wantMF: nil, |
| 144 | }, |
| 145 | "not initialized": { |
| 146 | mfs: nil, |
| 147 | wantMF: nil, |
| 148 | }, |
| 149 | } |
| 150 | |
| 151 | for name, test := range tests { |
| 152 | t.Run(name, func(t *testing.T) { |
| 153 | assert.Equal(t, test.mfs.GetSummary(n), test.wantMF) |
| 154 | }) |
| 155 | } |
| 156 | } |
| 157 | |
| 158 | func TestMetricFamilies_GetHistogram(t *testing.T) { |
| 159 | const n = "metric" |
| 160 | |
| 161 | tests := map[string]struct { |
| 162 | mfs MetricFamilies |
| 163 | wantMF *MetricFamily |
| 164 | }{ |
| 165 | "metric is found and is Histogram": { |
| 166 | mfs: MetricFamilies{n: &MetricFamily{name: n, typ: model.MetricTypeHistogram}}, |
| 167 | wantMF: &MetricFamily{name: n, typ: model.MetricTypeHistogram}, |
| 168 | }, |
| 169 | "metric is found but it is not Histogram": { |
| 170 | mfs: MetricFamilies{n: &MetricFamily{name: n, typ: model.MetricTypeGauge}}, |
| 171 | wantMF: nil, |
| 172 | }, |
| 173 | "metric is not found": { |
| 174 | mfs: MetricFamilies{"!" + n: &MetricFamily{name: n, typ: model.MetricTypeGauge}}, |
| 175 | wantMF: nil, |
| 176 | }, |
| 177 | "not initialized": { |
| 178 | mfs: nil, |
| 179 | wantMF: nil, |
| 180 | }, |
| 181 | } |
| 182 | |
| 183 | for name, test := range tests { |
| 184 | t.Run(name, func(t *testing.T) { |
| 185 | assert.Equal(t, test.mfs.GetHistogram(n), test.wantMF) |
| 186 | }) |
| 187 | } |
| 188 | } |
| 189 | |
| 190 | func TestMetricFamily_Name(t *testing.T) { |
| 191 | mf := &MetricFamily{name: "name"} |
| 192 | assert.Equal(t, mf.Name(), "name") |
| 193 | } |
| 194 | |
| 195 | func TestMetricFamily_Type(t *testing.T) { |
| 196 | mf := &MetricFamily{typ: model.MetricTypeGauge} |
| 197 | assert.Equal(t, mf.Type(), model.MetricTypeGauge) |
| 198 | } |
| 199 | |
| 200 | func TestMetricFamily_Help(t *testing.T) { |
| 201 | mf := &MetricFamily{help: "help"} |
| 202 | assert.Equal(t, mf.Help(), "help") |
| 203 | } |
| 204 | |
| 205 | func TestMetricFamily_Metrics(t *testing.T) { |
| 206 | metrics := []Metric{{gauge: &Gauge{value: 1}, counter: &Counter{value: 1}}} |
| 207 | mf := &MetricFamily{metrics: metrics} |
| 208 | assert.Equal(t, mf.Metrics(), metrics) |
| 209 | } |
| 210 | |
| 211 | func TestMetric_Labels(t *testing.T) { |
| 212 | lbs := labels.Labels{{Name: "1", Value: "1"}, {Name: "2", Value: "2"}} |
| 213 | m := &Metric{labels: lbs} |
| 214 | assert.Equal(t, m.Labels(), lbs) |
| 215 | } |
| 216 | |
| 217 | func TestMetric_Gauge(t *testing.T) { |
| 218 | tests := map[string]struct { |
| 219 | m *Metric |
| 220 | want *Gauge |
| 221 | }{ |
| 222 | "gauge set": { |
| 223 | m: &Metric{gauge: &Gauge{value: 1}}, |
| 224 | want: &Gauge{value: 1}, |
| 225 | }, |
| 226 | "gauge not set": { |
| 227 | m: &Metric{}, |
| 228 | want: nil, |
| 229 | }, |
| 230 | } |
| 231 | |
| 232 | for name, test := range tests { |
| 233 | t.Run(name, func(t *testing.T) { |
| 234 | assert.Equal(t, test.m.Gauge(), test.want) |
| 235 | }) |
| 236 | } |
| 237 | } |
| 238 | |
| 239 | func TestMetric_Counter(t *testing.T) { |
| 240 | tests := map[string]struct { |
| 241 | m *Metric |
| 242 | want *Counter |
| 243 | }{ |
| 244 | "counter set": { |
| 245 | m: &Metric{counter: &Counter{value: 1}}, |
| 246 | want: &Counter{value: 1}, |
| 247 | }, |
| 248 | "counter not set": { |
| 249 | m: &Metric{}, |
| 250 | want: nil, |
| 251 | }, |
| 252 | } |
| 253 | |
| 254 | for name, test := range tests { |
| 255 | t.Run(name, func(t *testing.T) { |
| 256 | assert.Equal(t, test.m.Counter(), test.want) |
| 257 | }) |
| 258 | } |
| 259 | } |
| 260 | |
| 261 | func TestMetric_Summary(t *testing.T) { |
| 262 | tests := map[string]struct { |
| 263 | m *Metric |
| 264 | want *Summary |
| 265 | }{ |
| 266 | "summary set": { |
| 267 | m: &Metric{summary: &Summary{sum: 0.1, count: 3}}, |
| 268 | want: &Summary{sum: 0.1, count: 3}, |
| 269 | }, |
| 270 | "summary not set": { |
| 271 | m: &Metric{}, |
| 272 | want: nil, |
| 273 | }, |
| 274 | } |
| 275 | |
| 276 | for name, test := range tests { |
| 277 | t.Run(name, func(t *testing.T) { |
| 278 | assert.Equal(t, test.m.Summary(), test.want) |
| 279 | }) |
| 280 | } |
| 281 | } |
| 282 | |
| 283 | func TestMetric_Histogram(t *testing.T) { |
| 284 | tests := map[string]struct { |
| 285 | m *Metric |
| 286 | want *Histogram |
| 287 | }{ |
| 288 | "histogram set": { |
| 289 | m: &Metric{histogram: &Histogram{sum: 0.1, count: 3}}, |
| 290 | want: &Histogram{sum: 0.1, count: 3}, |
| 291 | }, |
| 292 | "histogram not set": { |
| 293 | m: &Metric{}, |
| 294 | want: nil, |
| 295 | }, |
| 296 | } |
| 297 | |
| 298 | for name, test := range tests { |
| 299 | t.Run(name, func(t *testing.T) { |
| 300 | assert.Equal(t, test.m.Histogram(), test.want) |
| 301 | }) |
| 302 | } |
| 303 | } |
| 304 | |
| 305 | func TestGauge_Value(t *testing.T) { |
| 306 | assert.Equal(t, Gauge{value: 1}.Value(), 1.0) |
| 307 | } |
| 308 | |
| 309 | func TestCounter_Value(t *testing.T) { |
| 310 | assert.Equal(t, Counter{value: 1}.Value(), 1.0) |
| 311 | } |
| 312 | |
| 313 | func TestSummary_Sum(t *testing.T) { |
| 314 | assert.Equal(t, Summary{sum: 1}.Sum(), 1.0) |
| 315 | } |
| 316 | |
| 317 | func TestSummary_Count(t *testing.T) { |
| 318 | assert.Equal(t, Summary{count: 1}.Count(), 1.0) |
| 319 | } |
| 320 | |
| 321 | func TestSummary_Quantiles(t *testing.T) { |
| 322 | assert.Equal(t, |
| 323 | Summary{quantiles: []Quantile{{quantile: 0.1, value: 1}}}.Quantiles(), |
| 324 | []Quantile{{quantile: 0.1, value: 1}}, |
| 325 | ) |
| 326 | } |
| 327 | |
| 328 | func TestSummary_IsNaN(t *testing.T) { |
| 329 | tests := map[string]struct { |
| 330 | summary Summary |
| 331 | want bool |
| 332 | }{ |
| 333 | "all quantiles NaN": { |
| 334 | summary: Summary{quantiles: []Quantile{{quantile: 0.5, value: math.NaN()}, {quantile: 0.9, value: math.NaN()}}}, |
| 335 | want: true, |
| 336 | }, |
| 337 | "no quantiles": { |
| 338 | summary: Summary{}, |
| 339 | want: true, |
| 340 | }, |
| 341 | "mix of NaN and real quantiles": { |
| 342 | summary: Summary{quantiles: []Quantile{{quantile: 0.5, value: math.NaN()}, {quantile: 0.9, value: 0.4}}}, |
| 343 | want: false, |
| 344 | }, |
| 345 | "all quantiles real": { |
| 346 | summary: Summary{quantiles: []Quantile{{quantile: 0.5, value: 0.1}, {quantile: 0.9, value: 0.4}}}, |
| 347 | want: false, |
| 348 | }, |
| 349 | } |
| 350 | |
| 351 | for name, test := range tests { |
| 352 | t.Run(name, func(t *testing.T) { |
| 353 | assert.Equal(t, test.want, test.summary.IsNaN()) |
| 354 | }) |
| 355 | } |
| 356 | } |
| 357 | |
| 358 | func TestQuantile_Value(t *testing.T) { |
| 359 | assert.Equal(t, Quantile{value: 1}.Value(), 1.0) |
| 360 | } |
| 361 | |
| 362 | func TestQuantile_Quantile(t *testing.T) { |
| 363 | assert.Equal(t, Quantile{quantile: 0.1}.Quantile(), 0.1) |
| 364 | } |
| 365 | |
| 366 | func TestHistogram_Sum(t *testing.T) { |
| 367 | assert.Equal(t, Histogram{sum: 1}.Sum(), 1.0) |
| 368 | } |
| 369 | |
| 370 | func TestHistogram_Count(t *testing.T) { |
| 371 | assert.Equal(t, Histogram{count: 1}.Count(), 1.0) |
| 372 | } |
| 373 | |
| 374 | func TestHistogram_Buckets(t *testing.T) { |
| 375 | assert.Equal(t, |
| 376 | Histogram{buckets: []Bucket{{upperBound: 0.1, cumulativeCount: 1}}}.Buckets(), |
| 377 | []Bucket{{upperBound: 0.1, cumulativeCount: 1}}, |
| 378 | ) |
| 379 | } |
| 380 | |
| 381 | func TestBucket_UpperBound(t *testing.T) { |
| 382 | assert.Equal(t, Bucket{upperBound: 0.1}.UpperBound(), 0.1) |
| 383 | } |
| 384 | |
| 385 | func TestBucket_CumulativeCount(t *testing.T) { |
| 386 | assert.Equal(t, Bucket{cumulativeCount: 1}.CumulativeCount(), 1.0) |
| 387 | } |