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manager_test.go
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manager_test.go
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// Copyright (c) 2018 The Jaeger Authors.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package grpc
import (
"context"
"io"
"net"
"testing"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
"google.golang.org/grpc"
"google.golang.org/grpc/credentials/insecure"
"github.com/jaegertracing/jaeger/pkg/testutils"
"github.com/jaegertracing/jaeger/proto-gen/api_v2"
)
func close(t *testing.T, c io.Closer) {
require.NoError(t, c.Close())
}
func TestSamplingManager_GetSamplingStrategy(t *testing.T) {
s, addr := initializeGRPCTestServer(t, func(s *grpc.Server) {
api_v2.RegisterSamplingManagerServer(s, &mockSamplingHandler{})
})
conn, err := grpc.Dial(addr.String(), grpc.WithTransportCredentials(insecure.NewCredentials()))
defer close(t, conn)
require.NoError(t, err)
defer s.GracefulStop()
manager := NewConfigManager(conn)
resp, err := manager.GetSamplingStrategy(context.Background(), "any")
require.NoError(t, err)
assert.Equal(t, &api_v2.SamplingStrategyResponse{StrategyType: api_v2.SamplingStrategyType_PROBABILISTIC}, resp)
}
func TestSamplingManager_GetSamplingStrategy_error(t *testing.T) {
conn, err := grpc.Dial("foo", grpc.WithTransportCredentials(insecure.NewCredentials()))
defer close(t, conn)
require.NoError(t, err)
manager := NewConfigManager(conn)
resp, err := manager.GetSamplingStrategy(context.Background(), "any")
require.Nil(t, resp)
require.Error(t, err)
assert.Contains(t, err.Error(), "Error while dialing: dial tcp: address foo: missing port in address")
}
func TestSamplingManager_GetBaggageRestrictions(t *testing.T) {
manager := NewConfigManager(nil)
rest, err := manager.GetBaggageRestrictions(context.Background(), "foo")
require.Nil(t, rest)
require.EqualError(t, err, "baggage not implemented")
}
type mockSamplingHandler struct{}
func (*mockSamplingHandler) GetSamplingStrategy(context.Context, *api_v2.SamplingStrategyParameters) (*api_v2.SamplingStrategyResponse, error) {
return &api_v2.SamplingStrategyResponse{StrategyType: api_v2.SamplingStrategyType_PROBABILISTIC}, nil
}
func initializeGRPCTestServer(t *testing.T, beforeServe func(server *grpc.Server)) (*grpc.Server, net.Addr) {
server := grpc.NewServer()
lis, err := net.Listen("tcp", "localhost:0")
require.NoError(t, err)
beforeServe(server)
go func() {
err := server.Serve(lis)
require.NoError(t, err)
}()
return server, lis.Addr()
}
func TestMain(m *testing.M) {
testutils.VerifyGoLeaks(m)
}