Add simple ParseMessage benchmark

Author: belak

.gitignore

@@ -1,3 +1,6 @@
 *.cover
 *.test
 *.out
+
+# As this is a library, we ignore go.sum
+go.sum

go.mod

@@ -1 +1,8 @@
 module gopkg.in/irc.v3
+
+go 1.13
+
+require (
+	github.com/stretchr/testify v1.4.0
+	gopkg.in/yaml.v2 v2.2.8
+)

parser_test.go

@@ -10,6 +10,12 @@ import (
 	yaml "gopkg.in/yaml.v2"
 )
 
+func BenchmarkParseMessage(b *testing.B) {
+	for i := 0; i < b.N; i++ {
+		MustParseMessage("@tag1=something :nick!user@host PRIVMSG #channel :some message")
+	}
+}
+
 func TestMustParseMessage(t *testing.T) {
 	t.Parallel()