package log_test import ( "bytes" "io/ioutil" "strings" "testing" "github.com/tendermint/tendermint/libs/log" ) func TestLoggerLogsItsErrors(t *testing.T) { var buf bytes.Buffer logger := log.NewTMLogger(&buf) logger.Info("foo", "baz baz", "bar") msg := strings.TrimSpace(buf.String()) if !strings.Contains(msg, "foo") { t.Errorf("expected logger msg to contain ErrInvalidKey, got %s", msg) } } func BenchmarkTMLoggerSimple(b *testing.B) { benchmarkRunner(b, log.NewTMLogger(ioutil.Discard), baseInfoMessage) } func BenchmarkTMLoggerContextual(b *testing.B) { benchmarkRunner(b, log.NewTMLogger(ioutil.Discard), withInfoMessage) } func benchmarkRunner(b *testing.B, logger log.Logger, f func(log.Logger)) { lc := logger.With("common_key", "common_value") b.ReportAllocs() b.ResetTimer() for i := 0; i < b.N; i++ { f(lc) } } var ( baseInfoMessage = func(logger log.Logger) { logger.Info("foo_message", "foo_key", "foo_value") } withInfoMessage = func(logger log.Logger) { logger.With("a", "b").Info("c", "d", "f") } )