github.com/aigarnetwork/aigar@v0.0.0-20191115204914-d59a6eb70f8e/internal/testlog/testlog.go (about)

     1  //  Copyright 2018 The go-ethereum Authors
     2  //  Copyright 2019 The go-aigar Authors
     3  //  This file is part of the go-aigar library.
     4  //
     5  //  The go-aigar library is free software: you can redistribute it and/or modify
     6  //  it under the terms of the GNU Lesser General Public License as published by
     7  //  the Free Software Foundation, either version 3 of the License, or
     8  //  (at your option) any later version.
     9  //
    10  //  The go-aigar library is distributed in the hope that it will be useful,
    11  //  but WITHOUT ANY WARRANTY; without even the implied warranty of
    12  //  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
    13  //  GNU Lesser General Public License for more details.
    14  //
    15  //  You should have received a copy of the GNU Lesser General Public License
    16  //  along with the go-aigar library. If not, see <http://www.gnu.org/licenses/>.
    17  
    18  // Package testlog provides a log handler for unit tests.
    19  package testlog
    20  
    21  import (
    22  	"testing"
    23  
    24  	"github.com/AigarNetwork/aigar/log"
    25  )
    26  
    27  // Logger returns a logger which logs to the unit test log of t.
    28  func Logger(t *testing.T, level log.Lvl) log.Logger {
    29  	l := log.New()
    30  	l.SetHandler(Handler(t, level))
    31  	return l
    32  }
    33  
    34  // Handler returns a log handler which logs to the unit test log of t.
    35  func Handler(t *testing.T, level log.Lvl) log.Handler {
    36  	return log.LvlFilterHandler(level, &handler{t, log.TerminalFormat(false)})
    37  }
    38  
    39  type handler struct {
    40  	t   *testing.T
    41  	fmt log.Format
    42  }
    43  
    44  func (h *handler) Log(r *log.Record) error {
    45  	h.t.Logf("%s", h.fmt.Format(r))
    46  	return nil
    47  }