354 lines
11 KiB
Go
354 lines
11 KiB
Go
// Copyright 2017 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 labels
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import (
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"fmt"
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"math/rand"
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"testing"
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"github.com/stretchr/testify/require"
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)
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func mustNewMatcher(t *testing.T, mType MatchType, value string) *Matcher {
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m, err := NewMatcher(mType, "test_label_name", value)
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require.NoError(t, err)
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return m
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}
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func TestMatcher(t *testing.T) {
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tests := []struct {
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matcher *Matcher
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value string
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match bool
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}{
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{
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matcher: mustNewMatcher(t, MatchEqual, "bar"),
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value: "bar",
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match: true,
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},
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{
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matcher: mustNewMatcher(t, MatchEqual, "bar"),
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value: "foo-bar",
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match: false,
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},
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{
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matcher: mustNewMatcher(t, MatchNotEqual, "bar"),
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value: "bar",
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match: false,
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},
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{
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matcher: mustNewMatcher(t, MatchNotEqual, "bar"),
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value: "foo-bar",
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match: true,
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},
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{
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matcher: mustNewMatcher(t, MatchRegexp, "bar"),
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value: "bar",
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match: true,
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},
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{
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matcher: mustNewMatcher(t, MatchRegexp, "bar"),
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value: "foo-bar",
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match: false,
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},
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{
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matcher: mustNewMatcher(t, MatchRegexp, ".*bar"),
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value: "foo-bar",
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match: true,
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},
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{
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matcher: mustNewMatcher(t, MatchNotRegexp, "bar"),
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value: "bar",
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match: false,
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},
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{
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matcher: mustNewMatcher(t, MatchNotRegexp, "bar"),
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value: "foo-bar",
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match: true,
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},
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{
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matcher: mustNewMatcher(t, MatchNotRegexp, ".*bar"),
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value: "foo-bar",
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match: false,
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},
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{
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matcher: mustNewMatcher(t, MatchRegexp, "$*bar"),
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value: "foo-bar",
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match: false,
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},
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{
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matcher: mustNewMatcher(t, MatchRegexp, "bar^+"),
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value: "foo-bar",
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match: false,
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},
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{
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matcher: mustNewMatcher(t, MatchRegexp, "$+bar"),
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value: "foo-bar",
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match: false,
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},
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}
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for _, test := range tests {
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require.Equal(t, test.matcher.Matches(test.value), test.match)
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}
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}
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func TestInverse(t *testing.T) {
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tests := []struct {
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matcher *Matcher
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expected *Matcher
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}{
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{
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matcher: &Matcher{Type: MatchEqual, Name: "name1", Value: "value1"},
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expected: &Matcher{Type: MatchNotEqual, Name: "name1", Value: "value1"},
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},
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{
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matcher: &Matcher{Type: MatchNotEqual, Name: "name2", Value: "value2"},
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expected: &Matcher{Type: MatchEqual, Name: "name2", Value: "value2"},
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},
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{
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matcher: &Matcher{Type: MatchRegexp, Name: "name3", Value: "value3.*"},
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expected: &Matcher{Type: MatchNotRegexp, Name: "name3", Value: "value3.*"},
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},
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{
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matcher: &Matcher{Type: MatchNotRegexp, Name: "name4", Value: "value4.*"},
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expected: &Matcher{Type: MatchRegexp, Name: "name4", Value: "value4.*"},
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},
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}
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for _, test := range tests {
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result, err := test.matcher.Inverse()
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require.NoError(t, err)
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require.Equal(t, test.expected.Type, result.Type)
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}
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}
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func TestPrefix(t *testing.T) {
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for i, tc := range []struct {
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matcher *Matcher
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prefix string
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}{
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{
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matcher: mustNewMatcher(t, MatchEqual, "abc"),
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prefix: "",
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},
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{
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matcher: mustNewMatcher(t, MatchNotEqual, "abc"),
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prefix: "",
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},
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{
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matcher: mustNewMatcher(t, MatchRegexp, "abc.+"),
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prefix: "abc",
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},
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{
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matcher: mustNewMatcher(t, MatchRegexp, "abcd|abc.+"),
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prefix: "abc",
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},
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{
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matcher: mustNewMatcher(t, MatchNotRegexp, "abcd|abc.+"),
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prefix: "abc",
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},
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{
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matcher: mustNewMatcher(t, MatchRegexp, "abc(def|ghj)|ab|a."),
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prefix: "a",
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},
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{
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matcher: mustNewMatcher(t, MatchRegexp, "foo.+bar|foo.*baz"),
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prefix: "foo",
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},
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{
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matcher: mustNewMatcher(t, MatchRegexp, "abc|.*"),
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prefix: "",
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},
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{
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matcher: mustNewMatcher(t, MatchRegexp, "abc|def"),
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prefix: "",
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},
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{
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matcher: mustNewMatcher(t, MatchRegexp, ".+def"),
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prefix: "",
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},
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} {
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t.Run(fmt.Sprintf("%d: %s", i, tc.matcher), func(t *testing.T) {
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require.Equal(t, tc.prefix, tc.matcher.Prefix())
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})
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}
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}
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func TestIsRegexOptimized(t *testing.T) {
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for i, tc := range []struct {
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matcher *Matcher
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isRegexOptimized bool
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}{
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{
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matcher: mustNewMatcher(t, MatchEqual, "abc"),
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isRegexOptimized: false,
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},
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{
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matcher: mustNewMatcher(t, MatchRegexp, "."),
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isRegexOptimized: false,
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},
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{
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matcher: mustNewMatcher(t, MatchRegexp, "abc.+"),
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isRegexOptimized: true,
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},
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} {
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t.Run(fmt.Sprintf("%d: %s", i, tc.matcher), func(t *testing.T) {
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require.Equal(t, tc.isRegexOptimized, tc.matcher.IsRegexOptimized())
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})
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}
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}
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func BenchmarkMatchType_String(b *testing.B) {
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for i := 0; i <= b.N; i++ {
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_ = MatchType(i % int(MatchNotRegexp+1)).String()
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}
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}
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func BenchmarkNewMatcher(b *testing.B) {
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b.Run("regex matcher with literal", func(b *testing.B) {
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b.ReportAllocs()
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b.ResetTimer()
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for i := 0; i <= b.N; i++ {
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NewMatcher(MatchRegexp, "foo", "bar")
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}
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})
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}
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func BenchmarkMatcher_String(b *testing.B) {
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type benchCase struct {
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name string
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matchers []*Matcher
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}
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cases := []benchCase{
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{
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name: "short name equal",
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matchers: []*Matcher{
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MustNewMatcher(MatchEqual, "foo", "bar"),
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MustNewMatcher(MatchEqual, "bar", "baz"),
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MustNewMatcher(MatchEqual, "abc", "def"),
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MustNewMatcher(MatchEqual, "ghi", "klm"),
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MustNewMatcher(MatchEqual, "nop", "qrs"),
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},
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},
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{
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name: "short quoted name not equal",
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matchers: []*Matcher{
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MustNewMatcher(MatchEqual, "f.o", "bar"),
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MustNewMatcher(MatchEqual, "b.r", "baz"),
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MustNewMatcher(MatchEqual, "a.c", "def"),
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MustNewMatcher(MatchEqual, "g.i", "klm"),
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MustNewMatcher(MatchEqual, "n.p", "qrs"),
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},
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},
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{
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name: "short quoted name with quotes not equal",
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matchers: []*Matcher{
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MustNewMatcher(MatchEqual, `"foo"`, "bar"),
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MustNewMatcher(MatchEqual, `"foo"`, "baz"),
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MustNewMatcher(MatchEqual, `"foo"`, "def"),
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MustNewMatcher(MatchEqual, `"foo"`, "klm"),
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MustNewMatcher(MatchEqual, `"foo"`, "qrs"),
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},
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},
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{
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name: "short name value with quotes equal",
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matchers: []*Matcher{
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MustNewMatcher(MatchEqual, "foo", `"bar"`),
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MustNewMatcher(MatchEqual, "bar", `"baz"`),
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MustNewMatcher(MatchEqual, "abc", `"def"`),
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MustNewMatcher(MatchEqual, "ghi", `"klm"`),
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MustNewMatcher(MatchEqual, "nop", `"qrs"`),
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},
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},
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{
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name: "short name and long value regexp",
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matchers: []*Matcher{
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MustNewMatcher(MatchRegexp, "foo", "five_six_seven_eight_nine_ten_one_two_three_four"),
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MustNewMatcher(MatchRegexp, "bar", "one_two_three_four_five_six_seven_eight_nine_ten"),
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MustNewMatcher(MatchRegexp, "abc", "two_three_four_five_six_seven_eight_nine_ten_one"),
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MustNewMatcher(MatchRegexp, "ghi", "three_four_five_six_seven_eight_nine_ten_one_two"),
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MustNewMatcher(MatchRegexp, "nop", "four_five_six_seven_eight_nine_ten_one_two_three"),
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},
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},
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{
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name: "short name and long value with quotes equal",
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matchers: []*Matcher{
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MustNewMatcher(MatchEqual, "foo", `five_six_seven_eight_nine_ten_"one"_two_three_four`),
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MustNewMatcher(MatchEqual, "bar", `one_two_three_four_five_six_"seven"_eight_nine_ten`),
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MustNewMatcher(MatchEqual, "abc", `two_three_four_five_six_seven_"eight"_nine_ten_one`),
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MustNewMatcher(MatchEqual, "ghi", `three_four_five_six_seven_eight_"nine"_ten_one_two`),
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MustNewMatcher(MatchEqual, "nop", `four_five_six_seven_eight_nine_"ten"_one_two_three`),
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},
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},
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{
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name: "long name regexp",
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matchers: []*Matcher{
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MustNewMatcher(MatchRegexp, "one_two_three_four_five_six_seven_eight_nine_ten", "val"),
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MustNewMatcher(MatchRegexp, "two_three_four_five_six_seven_eight_nine_ten_one", "val"),
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MustNewMatcher(MatchRegexp, "three_four_five_six_seven_eight_nine_ten_one_two", "val"),
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MustNewMatcher(MatchRegexp, "four_five_six_seven_eight_nine_ten_one_two_three", "val"),
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MustNewMatcher(MatchRegexp, "five_six_seven_eight_nine_ten_one_two_three_four", "val"),
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},
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},
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{
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name: "long quoted name regexp",
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matchers: []*Matcher{
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MustNewMatcher(MatchRegexp, "one.two.three.four.five.six.seven.eight.nine.ten", "val"),
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MustNewMatcher(MatchRegexp, "two.three.four.five.six.seven.eight.nine.ten.one", "val"),
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MustNewMatcher(MatchRegexp, "three.four.five.six.seven.eight.nine.ten.one.two", "val"),
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MustNewMatcher(MatchRegexp, "four.five.six.seven.eight.nine.ten.one.two.three", "val"),
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MustNewMatcher(MatchRegexp, "five.six.seven.eight.nine.ten.one.two.three.four", "val"),
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},
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},
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{
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name: "long name and long value regexp",
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matchers: []*Matcher{
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MustNewMatcher(MatchRegexp, "one_two_three_four_five_six_seven_eight_nine_ten", "five_six_seven_eight_nine_ten_one_two_three_four"),
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MustNewMatcher(MatchRegexp, "two_three_four_five_six_seven_eight_nine_ten_one", "one_two_three_four_five_six_seven_eight_nine_ten"),
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MustNewMatcher(MatchRegexp, "three_four_five_six_seven_eight_nine_ten_one_two", "two_three_four_five_six_seven_eight_nine_ten_one"),
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MustNewMatcher(MatchRegexp, "four_five_six_seven_eight_nine_ten_one_two_three", "three_four_five_six_seven_eight_nine_ten_one_two"),
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MustNewMatcher(MatchRegexp, "five_six_seven_eight_nine_ten_one_two_three_four", "four_five_six_seven_eight_nine_ten_one_two_three"),
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},
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},
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{
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name: "long quoted name and long value regexp",
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matchers: []*Matcher{
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MustNewMatcher(MatchRegexp, "one.two.three.four.five.six.seven.eight.nine.ten", "five.six.seven.eight.nine.ten.one.two.three.four"),
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MustNewMatcher(MatchRegexp, "two.three.four.five.six.seven.eight.nine.ten.one", "one.two.three.four.five.six.seven.eight.nine.ten"),
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MustNewMatcher(MatchRegexp, "three.four.five.six.seven.eight.nine.ten.one.two", "two.three.four.five.six.seven.eight.nine.ten.one"),
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MustNewMatcher(MatchRegexp, "four.five.six.seven.eight.nine.ten.one.two.three", "three.four.five.six.seven.eight.nine.ten.one.two"),
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MustNewMatcher(MatchRegexp, "five.six.seven.eight.nine.ten.one.two.three.four", "four.five.six.seven.eight.nine.ten.one.two.three"),
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},
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},
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}
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var mixed []*Matcher
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for _, bc := range cases {
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mixed = append(mixed, bc.matchers...)
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}
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rand.Shuffle(len(mixed), func(i, j int) { mixed[i], mixed[j] = mixed[j], mixed[i] })
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cases = append(cases, benchCase{name: "mixed", matchers: mixed})
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for _, bc := range cases {
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b.Run(bc.name, func(b *testing.B) {
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for i := 0; i <= b.N; i++ {
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m := bc.matchers[i%len(bc.matchers)]
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_ = m.String()
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}
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})
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}
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}
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