pomerium/internal/telemetry/grpc_test.go
Caleb Doxsey bbed421cd8
config: remove source, remove deadcode, fix linting issues (#4118)
* remove source, remove deadcode, fix linting issues

* use github action for lint

* fix missing envoy
2023-04-21 17:25:11 -06:00

47 lines
1.3 KiB
Go

package telemetry
import (
"context"
"testing"
"github.com/stretchr/testify/assert"
"go.opencensus.io/plugin/ocgrpc"
"go.opencensus.io/plugin/ochttp/propagation/b3"
"go.opencensus.io/trace"
"google.golang.org/grpc/metadata"
grpcstats "google.golang.org/grpc/stats"
)
type mockTagHandler struct {
called bool
}
type mockCtxTag string
func (m *mockTagHandler) TagRPC(ctx context.Context, _ *grpcstats.RPCTagInfo) context.Context {
m.called = true
return context.WithValue(ctx, mockCtxTag("added"), "true")
}
func Test_GRPCServerStatsHandler(t *testing.T) {
metricsHandler := &mockTagHandler{}
h := &GRPCServerStatsHandler{
metricsHandler: metricsHandler,
Handler: &ocgrpc.ServerHandler{},
}
ctx := context.WithValue(context.Background(), mockCtxTag("original"), "true")
ctx = metadata.NewIncomingContext(ctx, metadata.MD{
b3TraceIDHeader: {"9de3f6756f315fef"},
b3SpanIDHeader: {"b4f83d3096b6bf9c"},
})
ctx = h.TagRPC(ctx, &grpcstats.RPCTagInfo{})
assert.True(t, metricsHandler.called)
assert.Equal(t, ctx.Value(mockCtxTag("added")), "true")
assert.Equal(t, ctx.Value(mockCtxTag("original")), "true")
span := trace.FromContext(ctx)
expectedTraceID, _ := b3.ParseTraceID("9de3f6756f315fef")
assert.Equal(t, expectedTraceID, span.SpanContext().TraceID)
}