| 1 | // SPDX-License-Identifier: GPL-3.0-or-later |
| 2 | |
| 3 | package matcher |
| 4 | |
| 5 | import ( |
| 6 | "regexp" |
| 7 | "testing" |
| 8 | |
| 9 | "github.com/stretchr/testify/assert" |
| 10 | ) |
| 11 | |
| 12 | func TestRegExpMatch_Match(t *testing.T) { |
| 13 | m := regexp.MustCompile("[0-9]+") |
| 14 | |
| 15 | cases := []struct { |
| 16 | expected bool |
| 17 | line string |
| 18 | }{ |
| 19 | { |
| 20 | expected: true, |
| 21 | line: "2019", |
| 22 | }, |
| 23 | { |
| 24 | expected: true, |
| 25 | line: "It's over 9000!", |
| 26 | }, |
| 27 | { |
| 28 | expected: false, |
| 29 | line: "This will never fail!", |
| 30 | }, |
| 31 | } |
| 32 | |
| 33 | for _, c := range cases { |
| 34 | assert.Equal(t, c.expected, m.MatchString(c.line)) |
| 35 | } |
| 36 | } |
| 37 | |
| 38 | func BenchmarkRegExp_MatchString(b *testing.B) { |
| 39 | benchmarks := []struct { |
| 40 | expr string |
| 41 | test string |
| 42 | }{ |
| 43 | {"", ""}, |
| 44 | {"abc", "abcd"}, |
| 45 | {"^abc", "abcd"}, |
| 46 | {"abc$", "abcd"}, |
| 47 | {"^abc$", "abcd"}, |
| 48 | {"[a-z]+", "abcd"}, |
| 49 | } |
| 50 | for _, bm := range benchmarks { |
| 51 | b.Run(bm.expr+"_raw", func(b *testing.B) { |
| 52 | m := regexp.MustCompile(bm.expr) |
| 53 | b.ResetTimer() |
| 54 | for i := 0; i < b.N; i++ { |
| 55 | m.MatchString(bm.test) |
| 56 | } |
| 57 | }) |
| 58 | b.Run(bm.expr+"_optimized", func(b *testing.B) { |
| 59 | m, _ := NewRegExpMatcher(bm.expr) |
| 60 | b.ResetTimer() |
| 61 | for i := 0; i < b.N; i++ { |
| 62 | m.MatchString(bm.test) |
| 63 | } |
| 64 | }) |
| 65 | } |
| 66 | } |