115 lines
2.4 KiB
Go
115 lines
2.4 KiB
Go
// 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 metrics
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import (
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"encoding/json"
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"math"
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"testing"
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)
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func TestEqualValues(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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