package log_test import ( "bytes" "errors" "io/ioutil" "math" "regexp" "testing" kitlog "github.com/go-kit/kit/log" "github.com/stretchr/testify/assert" "github.com/tendermint/tendermint/libs/log" ) func TestTMFmtLogger(t *testing.T) { t.Parallel() buf := &bytes.Buffer{} logger := log.NewTMFmtLogger(buf) if err := logger.Log("hello", "world"); err != nil { t.Fatal(err) } assert.Regexp(t, regexp.MustCompile(`N\[.+\] unknown \s+ hello=world\n$`), buf.String()) buf.Reset() if err := logger.Log("a", 1, "err", errors.New("error")); err != nil { t.Fatal(err) } assert.Regexp(t, regexp.MustCompile(`N\[.+\] unknown \s+ a=1 err=error\n$`), buf.String()) buf.Reset() if err := logger.Log("std_map", map[int]int{1: 2}, "my_map", mymap{0: 0}); err != nil { t.Fatal(err) } assert.Regexp(t, regexp.MustCompile(`N\[.+\] unknown \s+ std_map=map\[1:2\] my_map=special_behavior\n$`), buf.String()) buf.Reset() if err := logger.Log("level", "error"); err != nil { t.Fatal(err) } assert.Regexp(t, regexp.MustCompile(`E\[.+\] unknown \s+\n$`), buf.String()) buf.Reset() if err := logger.Log("_msg", "Hello"); err != nil { t.Fatal(err) } assert.Regexp(t, regexp.MustCompile(`N\[.+\] Hello \s+\n$`), buf.String()) buf.Reset() if err := logger.Log("module", "main", "module", "crypto", "module", "wire"); err != nil { t.Fatal(err) } assert.Regexp(t, regexp.MustCompile(`N\[.+\] unknown \s+module=wire\s+\n$`), buf.String()) } func BenchmarkTMFmtLoggerSimple(b *testing.B) { benchmarkRunnerKitlog(b, log.NewTMFmtLogger(ioutil.Discard), baseMessage) } func BenchmarkTMFmtLoggerContextual(b *testing.B) { benchmarkRunnerKitlog(b, log.NewTMFmtLogger(ioutil.Discard), withMessage) } func TestTMFmtLoggerConcurrency(t *testing.T) { t.Parallel() testConcurrency(t, log.NewTMFmtLogger(ioutil.Discard), 10000) } func benchmarkRunnerKitlog(b *testing.B, logger kitlog.Logger, f func(kitlog.Logger)) { lc := kitlog.With(logger, "common_key", "common_value") b.ReportAllocs() b.ResetTimer() for i := 0; i < b.N; i++ { f(lc) } } var ( baseMessage = func(logger kitlog.Logger) { logger.Log("foo_key", "foo_value") } withMessage = func(logger kitlog.Logger) { kitlog.With(logger, "a", "b").Log("d", "f") } ) // These test are designed to be run with the race detector. func testConcurrency(t *testing.T, logger kitlog.Logger, total int) { n := int(math.Sqrt(float64(total))) share := total / n errC := make(chan error, n) for i := 0; i < n; i++ { go func() { errC <- spam(logger, share) }() } for i := 0; i < n; i++ { err := <-errC if err != nil { t.Fatalf("concurrent logging error: %v", err) } } } func spam(logger kitlog.Logger, count int) error { for i := 0; i < count; i++ { err := logger.Log("key", i) if err != nil { return err } } return nil } type mymap map[int]int func (m mymap) String() string { return "special_behavior" }