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// Copyright The OpenTelemetry Authors
// SPDX-License-Identifier: Apache-2.0
package otelgrpc
import (
"context"
"testing"
"github.com/stretchr/testify/assert"
"go.opentelemetry.io/otel/metric"
"go.opentelemetry.io/otel/metric/embedded"
)
func TestNilInstruments(t *testing.T) {
mp := meterProvider{}
c := newConfig([]Option{WithMeterProvider(mp)}, "test")
ctx := context.Background()
assert.NotPanics(t, func() { c.rpcDuration.Record(ctx, 0) }, "rpcDuration")
assert.NotPanics(t, func() { c.rpcRequestSize.Record(ctx, 0) }, "rpcRequestSize")
assert.NotPanics(t, func() { c.rpcResponseSize.Record(ctx, 0) }, "rpcResponseSize")
assert.NotPanics(t, func() { c.rpcRequestsPerRPC.Record(ctx, 0) }, "rpcRequestsPerRPC")
assert.NotPanics(t, func() { c.rpcResponsesPerRPC.Record(ctx, 0) }, "rpcResponsesPerRPC")
}
type meterProvider struct {
embedded.MeterProvider
}
func (meterProvider) Meter(string, ...metric.MeterOption) metric.Meter {
return meter{}
}
type meter struct {
// Panic for non-implemented methods.
metric.Meter
}
func (meter) Int64Histogram(string, ...metric.Int64HistogramOption) (metric.Int64Histogram, error) {
return nil, assert.AnError
}
func (meter) Float64Histogram(string, ...metric.Float64HistogramOption) (metric.Float64Histogram, error) {
return nil, assert.AnError
}
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