github.com/aigarnetwork/aigar@v0.0.0-20191115204914-d59a6eb70f8e/metrics/json_test.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 metrics
    19  
    20  import (
    21  	"bytes"
    22  	"encoding/json"
    23  	"testing"
    24  )
    25  
    26  func TestRegistryMarshallJSON(t *testing.T) {
    27  	b := &bytes.Buffer{}
    28  	enc := json.NewEncoder(b)
    29  	r := NewRegistry()
    30  	r.Register("counter", NewCounter())
    31  	enc.Encode(r)
    32  	if s := b.String(); "{\"counter\":{\"count\":0}}\n" != s {
    33  		t.Fatalf(s)
    34  	}
    35  }
    36  
    37  func TestRegistryWriteJSONOnce(t *testing.T) {
    38  	r := NewRegistry()
    39  	r.Register("counter", NewCounter())
    40  	b := &bytes.Buffer{}
    41  	WriteJSONOnce(r, b)
    42  	if s := b.String(); s != "{\"counter\":{\"count\":0}}\n" {
    43  		t.Fail()
    44  	}
    45  }