istio.io/istio@v0.0.0-20240520182934-d79c90f27776/cni/pkg/pluginlistener/listener_test.go (about)

     1  // Copyright Istio Authors
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //     http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  
    15  package pluginlistener
    16  
    17  import (
    18  	"context"
    19  	"net"
    20  	"path/filepath"
    21  	"testing"
    22  
    23  	"google.golang.org/grpc"
    24  	"google.golang.org/grpc/credentials/insecure"
    25  )
    26  
    27  func TestCNIListener(t *testing.T) {
    28  	f := filepath.Join(t.TempDir(), "test")
    29  	l, err := NewListener(f)
    30  	if err != nil {
    31  		t.Fatalf("unexpected error %v", err)
    32  	}
    33  	defer l.Close()
    34  	conn, err := connect(f)
    35  	if err != nil {
    36  		t.Fatalf("failed to connect %v", err)
    37  	}
    38  	conn.Close()
    39  }
    40  
    41  func connect(socket string) (*grpc.ClientConn, error) {
    42  	var opts []grpc.DialOption
    43  
    44  	opts = append(opts, grpc.WithTransportCredentials(insecure.NewCredentials()), grpc.WithContextDialer(func(ctx context.Context, addr string) (net.Conn, error) {
    45  		var d net.Dialer
    46  		return d.DialContext(ctx, "unix", socket)
    47  	}))
    48  
    49  	conn, err := grpc.Dial(socket, opts...)
    50  	if err != nil {
    51  		return nil, err
    52  	}
    53  
    54  	return conn, nil
    55  }