Source file src/github.com/go-kit/kit/log/deprecated_levels/levels_test.go

Documentation: github.com/go-kit/kit/log/deprecated_levels

     1  package levels_test
     2  
     3  import (
     4  	"bytes"
     5  	"os"
     6  	"testing"
     7  
     8  	levels "github.com/go-kit/kit/log/deprecated_levels"
     9  	"github.com/go-kit/log"
    10  )
    11  
    12  func TestDefaultLevels(t *testing.T) {
    13  	buf := bytes.Buffer{}
    14  	logger := levels.New(log.NewLogfmtLogger(&buf))
    15  
    16  	logger.Debug().Log("msg", "résumé") // of course you'd want to do this
    17  	if want, have := "level=debug msg=résumé\n", buf.String(); want != have {
    18  		t.Errorf("want %#v, have %#v", want, have)
    19  	}
    20  
    21  	buf.Reset()
    22  	logger.Info().Log("msg", "Åhus")
    23  	if want, have := "level=info msg=Åhus\n", buf.String(); want != have {
    24  		t.Errorf("want %#v, have %#v", want, have)
    25  	}
    26  
    27  	buf.Reset()
    28  	logger.Error().Log("msg", "© violation")
    29  	if want, have := "level=error msg=\"© violation\"\n", buf.String(); want != have {
    30  		t.Errorf("want %#v, have %#v", want, have)
    31  	}
    32  
    33  	buf.Reset()
    34  	logger.Crit().Log("msg", "	")
    35  	if want, have := "level=crit msg=\"\\t\"\n", buf.String(); want != have {
    36  		t.Errorf("want %#v, have %#v", want, have)
    37  	}
    38  }
    39  
    40  func TestModifiedLevels(t *testing.T) {
    41  	buf := bytes.Buffer{}
    42  	logger := levels.New(
    43  		log.NewJSONLogger(&buf),
    44  		levels.Key("l"),
    45  		levels.DebugValue("dbg"),
    46  		levels.InfoValue("nfo"),
    47  		levels.WarnValue("wrn"),
    48  		levels.ErrorValue("err"),
    49  		levels.CritValue("crt"),
    50  	)
    51  	logger.With("easter_island", "176°").Debug().Log("msg", "moai")
    52  	if want, have := `{"easter_island":"176°","l":"dbg","msg":"moai"}`+"\n", buf.String(); want != have {
    53  		t.Errorf("want %#v, have %#v", want, have)
    54  	}
    55  }
    56  
    57  func ExampleLevels() {
    58  	logger := levels.New(log.NewLogfmtLogger(os.Stdout))
    59  	logger.Debug().Log("msg", "hello")
    60  	logger.With("context", "foo").Warn().Log("err", "error")
    61  
    62  	// Output:
    63  	// level=debug msg=hello
    64  	// level=warn context=foo err=error
    65  }
    66  

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