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d2abe9a58a
* Shortcut Matrix.ContainsSameLabelset() It's quite often to execute this check on a Matrix that has zero or only one series. There's no need to allocate a map for those cases. There's also a one-liner for two-series case, so why not using it? Signed-off-by: Oleg Zaytsev <mail@olegzaytsev.com> * Add license header Signed-off-by: Oleg Zaytsev <mail@olegzaytsev.com> * Optimize Vector.ContainsSameLabelset Signed-off-by: Oleg Zaytsev <mail@olegzaytsev.com>
111 lines
2.7 KiB
Go
111 lines
2.7 KiB
Go
// Copyright 2022 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 promql
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import (
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"testing"
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"github.com/stretchr/testify/require"
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"github.com/prometheus/prometheus/model/labels"
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)
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func TestVector_ContainsSameLabelset(t *testing.T) {
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for name, tc := range map[string]struct {
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vector Vector
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expected bool
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}{
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"empty vector": {
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vector: Vector{},
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expected: false,
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},
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"vector with one series": {
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vector: Vector{
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{Metric: labels.FromStrings("lbl", "a")},
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},
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expected: false,
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},
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"vector with two different series": {
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vector: Vector{
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{Metric: labels.FromStrings("lbl", "a")},
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{Metric: labels.FromStrings("lbl", "b")},
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},
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expected: false,
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},
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"vector with two equal series": {
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vector: Vector{
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{Metric: labels.FromStrings("lbl", "a")},
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{Metric: labels.FromStrings("lbl", "a")},
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},
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expected: true,
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},
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"vector with three series, two equal": {
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vector: Vector{
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{Metric: labels.FromStrings("lbl", "a")},
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{Metric: labels.FromStrings("lbl", "b")},
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{Metric: labels.FromStrings("lbl", "a")},
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},
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expected: true,
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},
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} {
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t.Run(name, func(t *testing.T) {
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require.Equal(t, tc.expected, tc.vector.ContainsSameLabelset())
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})
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}
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}
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func TestMatrix_ContainsSameLabelset(t *testing.T) {
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for name, tc := range map[string]struct {
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matrix Matrix
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expected bool
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}{
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"empty matrix": {
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matrix: Matrix{},
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expected: false,
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},
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"matrix with one series": {
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matrix: Matrix{
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{Metric: labels.FromStrings("lbl", "a")},
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},
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expected: false,
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},
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"matrix with two different series": {
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matrix: Matrix{
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{Metric: labels.FromStrings("lbl", "a")},
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{Metric: labels.FromStrings("lbl", "b")},
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},
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expected: false,
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},
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"matrix with two equal series": {
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matrix: Matrix{
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{Metric: labels.FromStrings("lbl", "a")},
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{Metric: labels.FromStrings("lbl", "a")},
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},
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expected: true,
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},
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"matrix with three series, two equal": {
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matrix: Matrix{
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{Metric: labels.FromStrings("lbl", "a")},
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{Metric: labels.FromStrings("lbl", "b")},
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{Metric: labels.FromStrings("lbl", "a")},
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},
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expected: true,
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},
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} {
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t.Run(name, func(t *testing.T) {
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require.Equal(t, tc.expected, tc.matrix.ContainsSameLabelset())
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})
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}
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}
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