github.com/go-kit/log@v0.2.1/logfmt_logger_test.go (about)

     1  package log_test
     2  
     3  import (
     4  	"bytes"
     5  	"errors"
     6  	"io/ioutil"
     7  	"testing"
     8  
     9  	"github.com/go-kit/log"
    10  	"github.com/go-logfmt/logfmt"
    11  )
    12  
    13  func TestLogfmtLogger(t *testing.T) {
    14  	t.Parallel()
    15  	buf := &bytes.Buffer{}
    16  	logger := log.NewLogfmtLogger(buf)
    17  
    18  	if err := logger.Log("hello", "world"); err != nil {
    19  		t.Fatal(err)
    20  	}
    21  	if want, have := "hello=world\n", buf.String(); want != have {
    22  		t.Errorf("want %#v, have %#v", want, have)
    23  	}
    24  
    25  	buf.Reset()
    26  	if err := logger.Log("a", 1, "err", errors.New("error")); err != nil {
    27  		t.Fatal(err)
    28  	}
    29  	if want, have := "a=1 err=error\n", buf.String(); want != have {
    30  		t.Errorf("want %#v, have %#v", want, have)
    31  	}
    32  
    33  	buf.Reset()
    34  	if err := logger.Log("std_map", map[int]int{1: 2}, "my_map", mymap{0: 0}); err != nil {
    35  		t.Fatal(err)
    36  	}
    37  	if want, have := "std_map=\""+logfmt.ErrUnsupportedValueType.Error()+"\" my_map=special_behavior\n", buf.String(); want != have {
    38  		t.Errorf("want %#v, have %#v", want, have)
    39  	}
    40  }
    41  
    42  func BenchmarkLogfmtLoggerSimple(b *testing.B) {
    43  	benchmarkRunner(b, log.NewLogfmtLogger(ioutil.Discard), baseMessage)
    44  }
    45  
    46  func BenchmarkLogfmtLoggerContextual(b *testing.B) {
    47  	benchmarkRunner(b, log.NewLogfmtLogger(ioutil.Discard), withMessage)
    48  }
    49  
    50  func TestLogfmtLoggerConcurrency(t *testing.T) {
    51  	t.Parallel()
    52  	testConcurrency(t, log.NewLogfmtLogger(ioutil.Discard), 10000)
    53  }
    54  
    55  type mymap map[int]int
    56  
    57  func (m mymap) String() string { return "special_behavior" }