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	* feat(x/metrics): add module for emiting custom chain metrics (#1668)
* initialize x/metrics with metrics collection
* include global labels in x/metrics metrics
* add x/metrics spec
* add x/metrics test coverage
* update changelog
(cherry picked from commit 9a0aed7626)
# Conflicts:
#	CHANGELOG.md
* fix changlog conflicts
---------
Co-authored-by: Robert Pirtle <Astropirtle@gmail.com>
		
	
			
		
			
				
	
	
		
			46 lines
		
	
	
		
			1.2 KiB
		
	
	
	
		
			Go
		
	
	
	
	
	
			
		
		
	
	
			46 lines
		
	
	
		
			1.2 KiB
		
	
	
	
		
			Go
		
	
	
	
	
	
package metrics_test
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import (
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	"testing"
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	kitmetrics "github.com/go-kit/kit/metrics"
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	"github.com/stretchr/testify/require"
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	sdk "github.com/cosmos/cosmos-sdk/types"
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	tmproto "github.com/tendermint/tendermint/proto/tendermint/types"
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	"github.com/kava-labs/kava/app"
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	"github.com/kava-labs/kava/x/metrics"
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	"github.com/kava-labs/kava/x/metrics/types"
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)
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type MockGauge struct {
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	value float64
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}
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func (mg *MockGauge) With(labelValues ...string) kitmetrics.Gauge { return mg }
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func (mg *MockGauge) Set(value float64)                           { mg.value = value }
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func (*MockGauge) Add(_ float64)                                  {}
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func ctxWithHeight(height int64) sdk.Context {
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	tApp := app.NewTestApp()
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	tApp.InitializeFromGenesisStates()
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	return tApp.NewContext(false, tmproto.Header{Height: height})
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}
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func TestBeginBlockEmitsLatestHeight(t *testing.T) {
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	gauge := MockGauge{}
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	myMetrics := &types.Metrics{
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		LatestBlockHeight: &gauge,
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	}
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	metrics.BeginBlocker(ctxWithHeight(1), myMetrics)
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	require.EqualValues(t, 1, gauge.value)
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	metrics.BeginBlocker(ctxWithHeight(100), myMetrics)
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	require.EqualValues(t, 100, gauge.value)
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	metrics.BeginBlocker(ctxWithHeight(17e6), myMetrics)
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	require.EqualValues(t, 17e6, gauge.value)
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}
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