service_test.go

Documentation: github.com/google/s2a-go/internal/handshaker/service

     1  /*
     2   *
     3   * Copyright 2021 Google LLC
     4   *
     5   * Licensed under the Apache License, Version 2.0 (the "License");
     6   * you may not use this file except in compliance with the License.
     7   * You may obtain a copy of the License at
     8   *
     9   *     https://www.apache.org/licenses/LICENSE-2.0
    10   *
    11   * Unless required by applicable law or agreed to in writing, software
    12   * distributed under the License is distributed on an "AS IS" BASIS,
    13   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    14   * See the License for the specific language governing permissions and
    15   * limitations under the License.
    16   *
    17   */
    18  
    19  package service
    20  
    21  import (
    22  	"context"
    23  	"crypto/tls"
    24  	"testing"
    25  
    26  	"google.golang.org/grpc/credentials"
    27  
    28  	grpc "google.golang.org/grpc"
    29  )
    30  
    31  const (
    32  	testAddress1 = "test_address_1"
    33  	testAddress2 = "test_address_2"
    34  	testAddress3 = "test_address_3"
    35  )
    36  
    37  func TestDial(t *testing.T) {
    38  	defer func() func() {
    39  		temp := hsDialer
    40  		hsDialer = func(ctx context.Context, target string, opts ...grpc.DialOption) (*grpc.ClientConn, error) {
    41  			return &grpc.ClientConn{}, nil
    42  		}
    43  		return func() {
    44  			hsDialer = temp
    45  		}
    46  	}()
    47  
    48  	ctx := context.Background()
    49  
    50  	// First call to Dial, it should create a connection to the server running
    51  	// at the given address.
    52  	conn1, err := Dial(ctx, testAddress1, nil)
    53  	if err != nil {
    54  		t.Fatalf("first call to Dial(%v) failed: %v", testAddress1, err)
    55  	}
    56  	if conn1 == nil {
    57  		t.Fatalf("first call to Dial(%v)=(nil, _), want not nil", testAddress1)
    58  	}
    59  	if got, want := hsConnMap[testAddress1], conn1; got != want {
    60  		t.Fatalf("hsConnMap[%v] = %v, want %v", testAddress1, got, want)
    61  	}
    62  
    63  	// Second call to Dial should return conn1 above.
    64  	conn2, err := Dial(ctx, testAddress1, nil)
    65  	if err != nil {
    66  		t.Fatalf("second call to Dial(%v) failed: %v", testAddress1, err)
    67  	}
    68  	if got, want := conn2, conn1; got != want {
    69  		t.Fatalf("second call to Dial(%v)=(%v, _), want (%v, _)", testAddress1, got, want)
    70  	}
    71  	if got, want := hsConnMap[testAddress1], conn1; got != want {
    72  		t.Fatalf("hsConnMap[%v] = %v, want %v", testAddress1, got, want)
    73  	}
    74  
    75  	// Third call to Dial using a different address should create a new
    76  	// connection.
    77  	conn3, err := Dial(ctx, testAddress2, nil)
    78  	if err != nil {
    79  		t.Fatalf("third call to Dial(%v) failed: %v", testAddress2, err)
    80  	}
    81  	if conn3 == nil {
    82  		t.Fatalf("third call to Dial(%v)=(nil, _), want not nil", testAddress2)
    83  	}
    84  	if got, want := hsConnMap[testAddress2], conn3; got != want {
    85  		t.Fatalf("hsConnMap[%v] = %v, want %v", testAddress2, got, want)
    86  	}
    87  	if got, want := conn2 == conn3, false; got != want {
    88  		t.Fatalf("(conn2 == conn3) = %v, want %v", got, want)
    89  	}
    90  
    91  	// Connect to an address with transportCredentials.
    92  	conn4, err := Dial(ctx, testAddress3, credentials.NewTLS(&tls.Config{}))
    93  	if err != nil {
    94  		t.Fatalf("first call to Dial(%v) failed: %v", testAddress3, err)
    95  	}
    96  	if conn4 == nil {
    97  		t.Fatalf("first call to Dial(%v)=(nil, _), want not nil", testAddress3)
    98  	}
    99  	if got, want := hsConnMap[testAddress3], conn4; got != want {
   100  		t.Fatalf("hsConnMap[%v] = %v, want %v", testAddress3, got, want)
   101  	}
   102  }
   103
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