config_test.go

Documentation: go.opentelemetry.io/contrib/instrumentation/google.golang.org/grpc/otelgrpc

     1  // Copyright The OpenTelemetry Authors
     2  // SPDX-License-Identifier: Apache-2.0
     3  
     4  package otelgrpc
     5  
     6  import (
     7  	"context"
     8  	"testing"
     9  
    10  	"github.com/stretchr/testify/assert"
    11  
    12  	"go.opentelemetry.io/otel/metric"
    13  	"go.opentelemetry.io/otel/metric/embedded"
    14  )
    15  
    16  func TestNilInstruments(t *testing.T) {
    17  	mp := meterProvider{}
    18  	c := newConfig([]Option{WithMeterProvider(mp)}, "test")
    19  
    20  	ctx := context.Background()
    21  	assert.NotPanics(t, func() { c.rpcDuration.Record(ctx, 0) }, "rpcDuration")
    22  	assert.NotPanics(t, func() { c.rpcRequestSize.Record(ctx, 0) }, "rpcRequestSize")
    23  	assert.NotPanics(t, func() { c.rpcResponseSize.Record(ctx, 0) }, "rpcResponseSize")
    24  	assert.NotPanics(t, func() { c.rpcRequestsPerRPC.Record(ctx, 0) }, "rpcRequestsPerRPC")
    25  	assert.NotPanics(t, func() { c.rpcResponsesPerRPC.Record(ctx, 0) }, "rpcResponsesPerRPC")
    26  }
    27  
    28  type meterProvider struct {
    29  	embedded.MeterProvider
    30  }
    31  
    32  func (meterProvider) Meter(string, ...metric.MeterOption) metric.Meter {
    33  	return meter{}
    34  }
    35  
    36  type meter struct {
    37  	// Panic for non-implemented methods.
    38  	metric.Meter
    39  }
    40  
    41  func (meter) Int64Histogram(string, ...metric.Int64HistogramOption) (metric.Int64Histogram, error) {
    42  	return nil, assert.AnError
    43  }
    44  
    45  func (meter) Float64Histogram(string, ...metric.Float64HistogramOption) (metric.Float64Histogram, error) {
    46  	return nil, assert.AnError
    47  }
    48

View as plain text