418 lines
7.5 KiB
Go
418 lines
7.5 KiB
Go
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// Copyright 2013 The Prometheus Authors
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package model
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import (
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"encoding/json"
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"math"
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"reflect"
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"sort"
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"testing"
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)
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func TestEqual(t *testing.T) {
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tests := map[string]struct {
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in1, in2 SampleValue
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want bool
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}{
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"equal floats": {
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in1: 3.14,
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in2: 3.14,
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want: true,
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},
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"unequal floats": {
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in1: 3.14,
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in2: 3.1415,
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want: false,
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},
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"positive inifinities": {
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in1: SampleValue(math.Inf(+1)),
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in2: SampleValue(math.Inf(+1)),
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want: true,
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},
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"negative inifinities": {
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in1: SampleValue(math.Inf(-1)),
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in2: SampleValue(math.Inf(-1)),
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want: true,
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},
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"different inifinities": {
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in1: SampleValue(math.Inf(+1)),
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in2: SampleValue(math.Inf(-1)),
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want: false,
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},
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"number and infinity": {
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in1: 42,
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in2: SampleValue(math.Inf(+1)),
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want: false,
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},
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"number and NaN": {
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in1: 42,
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in2: SampleValue(math.NaN()),
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want: false,
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},
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"NaNs": {
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in1: SampleValue(math.NaN()),
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in2: SampleValue(math.NaN()),
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want: true, // !!!
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},
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}
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for name, test := range tests {
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got := test.in1.Equal(test.in2)
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if got != test.want {
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t.Errorf("Comparing %s, %f and %f: got %t, want %t", name, test.in1, test.in2, got, test.want)
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}
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}
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}
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func TestSamplePairJSON(t *testing.T) {
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input := []struct {
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plain string
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value SamplePair
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}{
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{
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plain: `[1234.567,"123.1"]`,
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value: SamplePair{
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Value: 123.1,
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Timestamp: 1234567,
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},
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},
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}
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for _, test := range input {
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b, err := json.Marshal(test.value)
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if err != nil {
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t.Error(err)
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continue
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}
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if string(b) != test.plain {
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t.Errorf("encoding error: expected %q, got %q", test.plain, b)
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continue
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}
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var sp SamplePair
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err = json.Unmarshal(b, &sp)
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if err != nil {
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t.Error(err)
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continue
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}
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if sp != test.value {
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t.Errorf("decoding error: expected %v, got %v", test.value, sp)
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}
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}
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}
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func TestSampleJSON(t *testing.T) {
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input := []struct {
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plain string
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value Sample
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}{
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{
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plain: `{"metric":{"__name__":"test_metric"},"value":[1234.567,"123.1"]}`,
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value: Sample{
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Metric: Metric{
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MetricNameLabel: "test_metric",
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},
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Value: 123.1,
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Timestamp: 1234567,
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},
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},
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}
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for _, test := range input {
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b, err := json.Marshal(test.value)
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if err != nil {
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t.Error(err)
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continue
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}
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if string(b) != test.plain {
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t.Errorf("encoding error: expected %q, got %q", test.plain, b)
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continue
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}
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var sv Sample
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err = json.Unmarshal(b, &sv)
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if err != nil {
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t.Error(err)
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continue
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}
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if !reflect.DeepEqual(sv, test.value) {
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t.Errorf("decoding error: expected %v, got %v", test.value, sv)
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}
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}
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}
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func TestVectorJSON(t *testing.T) {
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input := []struct {
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plain string
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value Vector
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}{
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{
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plain: `[]`,
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value: Vector{},
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},
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{
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plain: `[{"metric":{"__name__":"test_metric"},"value":[1234.567,"123.1"]}]`,
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value: Vector{&Sample{
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Metric: Metric{
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MetricNameLabel: "test_metric",
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},
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Value: 123.1,
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Timestamp: 1234567,
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}},
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},
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{
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plain: `[{"metric":{"__name__":"test_metric"},"value":[1234.567,"123.1"]},{"metric":{"foo":"bar"},"value":[1.234,"+Inf"]}]`,
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value: Vector{
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&Sample{
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Metric: Metric{
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MetricNameLabel: "test_metric",
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},
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Value: 123.1,
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Timestamp: 1234567,
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},
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&Sample{
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Metric: Metric{
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"foo": "bar",
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},
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Value: SampleValue(math.Inf(1)),
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Timestamp: 1234,
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},
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},
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},
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}
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for _, test := range input {
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b, err := json.Marshal(test.value)
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if err != nil {
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t.Error(err)
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continue
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}
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if string(b) != test.plain {
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t.Errorf("encoding error: expected %q, got %q", test.plain, b)
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continue
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}
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var vec Vector
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err = json.Unmarshal(b, &vec)
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if err != nil {
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t.Error(err)
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continue
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}
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if !reflect.DeepEqual(vec, test.value) {
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t.Errorf("decoding error: expected %v, got %v", test.value, vec)
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}
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}
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}
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func TestScalarJSON(t *testing.T) {
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input := []struct {
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plain string
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value Scalar
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}{
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{
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plain: `[123.456,"456"]`,
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value: Scalar{
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Timestamp: 123456,
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Value: 456,
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},
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},
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{
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plain: `[123123.456,"+Inf"]`,
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value: Scalar{
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Timestamp: 123123456,
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Value: SampleValue(math.Inf(1)),
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},
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},
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{
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plain: `[123123.456,"-Inf"]`,
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value: Scalar{
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Timestamp: 123123456,
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Value: SampleValue(math.Inf(-1)),
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},
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},
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}
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for _, test := range input {
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b, err := json.Marshal(test.value)
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if err != nil {
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t.Error(err)
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continue
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}
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if string(b) != test.plain {
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t.Errorf("encoding error: expected %q, got %q", test.plain, b)
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continue
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}
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var sv Scalar
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err = json.Unmarshal(b, &sv)
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if err != nil {
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t.Error(err)
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continue
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}
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if sv != test.value {
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t.Errorf("decoding error: expected %v, got %v", test.value, sv)
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}
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}
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}
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func TestStringJSON(t *testing.T) {
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input := []struct {
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plain string
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value String
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}{
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{
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plain: `[123.456,"test"]`,
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value: String{
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Timestamp: 123456,
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Value: "test",
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},
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},
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{
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plain: `[123123.456,"台北"]`,
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value: String{
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Timestamp: 123123456,
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Value: "台北",
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},
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},
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}
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for _, test := range input {
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b, err := json.Marshal(test.value)
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if err != nil {
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t.Error(err)
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continue
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}
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if string(b) != test.plain {
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t.Errorf("encoding error: expected %q, got %q", test.plain, b)
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continue
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}
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var sv String
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err = json.Unmarshal(b, &sv)
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if err != nil {
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t.Error(err)
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continue
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}
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if sv != test.value {
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t.Errorf("decoding error: expected %v, got %v", test.value, sv)
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}
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}
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}
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func TestVectorSort(t *testing.T) {
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input := Vector{
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&Sample{
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Metric: Metric{
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MetricNameLabel: "A",
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},
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Timestamp: 1,
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},
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&Sample{
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Metric: Metric{
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MetricNameLabel: "A",
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},
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Timestamp: 2,
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},
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&Sample{
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Metric: Metric{
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MetricNameLabel: "C",
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},
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Timestamp: 1,
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},
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&Sample{
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Metric: Metric{
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MetricNameLabel: "C",
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},
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Timestamp: 2,
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},
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&Sample{
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Metric: Metric{
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MetricNameLabel: "B",
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},
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Timestamp: 1,
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},
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&Sample{
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Metric: Metric{
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MetricNameLabel: "B",
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},
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Timestamp: 2,
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},
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}
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expected := Vector{
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&Sample{
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Metric: Metric{
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MetricNameLabel: "A",
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},
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Timestamp: 1,
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},
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&Sample{
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Metric: Metric{
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MetricNameLabel: "A",
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},
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Timestamp: 2,
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},
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&Sample{
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Metric: Metric{
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MetricNameLabel: "B",
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},
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Timestamp: 1,
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},
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&Sample{
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Metric: Metric{
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MetricNameLabel: "B",
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},
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Timestamp: 2,
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},
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&Sample{
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Metric: Metric{
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MetricNameLabel: "C",
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},
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Timestamp: 1,
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},
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&Sample{
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Metric: Metric{
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MetricNameLabel: "C",
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},
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Timestamp: 2,
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},
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}
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sort.Sort(input)
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for i, actual := range input {
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actualFp := actual.Metric.Fingerprint()
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expectedFp := expected[i].Metric.Fingerprint()
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if actualFp != expectedFp {
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t.Fatalf("%d. Incorrect fingerprint. Got %s; want %s", i, actualFp.String(), expectedFp.String())
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}
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if actual.Timestamp != expected[i].Timestamp {
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t.Fatalf("%d. Incorrect timestamp. Got %s; want %s", i, actual.Timestamp, expected[i].Timestamp)
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}
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}
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}
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