google.golang.org/grpc@v1.62.1/credentials/alts/internal/handshaker/service/service_test.go (about)

     1  /*
     2   *
     3   * Copyright 2018 gRPC authors.
     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   *     http://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  	"testing"
    23  
    24  	grpc "google.golang.org/grpc"
    25  )
    26  
    27  const (
    28  	testAddress1 = "some_address_1"
    29  	testAddress2 = "some_address_2"
    30  )
    31  
    32  func TestDial(t *testing.T) {
    33  	defer func() func() {
    34  		temp := hsDialer
    35  		hsDialer = func(target string, opts ...grpc.DialOption) (*grpc.ClientConn, error) {
    36  			return &grpc.ClientConn{}, nil
    37  		}
    38  		return func() {
    39  			hsDialer = temp
    40  		}
    41  	}()
    42  
    43  	// First call to Dial, it should create a connection to the server running
    44  	// at the given address.
    45  	conn1, err := Dial(testAddress1)
    46  	if err != nil {
    47  		t.Fatalf("first call to Dial(%v) failed: %v", testAddress1, err)
    48  	}
    49  	if conn1 == nil {
    50  		t.Fatalf("first call to Dial(%v)=(nil, _), want not nil", testAddress1)
    51  	}
    52  	if got, want := hsConnMap[testAddress1], conn1; got != want {
    53  		t.Fatalf("hsConnMap[%v]=%v, want %v", testAddress1, got, want)
    54  	}
    55  
    56  	// Second call to Dial should return conn1 above.
    57  	conn2, err := Dial(testAddress1)
    58  	if err != nil {
    59  		t.Fatalf("second call to Dial(%v) failed: %v", testAddress1, err)
    60  	}
    61  	if got, want := conn2, conn1; got != want {
    62  		t.Fatalf("second call to Dial(%v)=(%v, _), want (%v,. _)", testAddress1, got, want)
    63  	}
    64  	if got, want := hsConnMap[testAddress1], conn1; got != want {
    65  		t.Fatalf("hsConnMap[%v]=%v, want %v", testAddress1, got, want)
    66  	}
    67  
    68  	// Third call to Dial using a different address should create a new
    69  	// connection.
    70  	conn3, err := Dial(testAddress2)
    71  	if err != nil {
    72  		t.Fatalf("third call to Dial(%v) failed: %v", testAddress2, err)
    73  	}
    74  	if conn3 == nil {
    75  		t.Fatalf("third call to Dial(%v)=(nil, _), want not nil", testAddress2)
    76  	}
    77  	if got, want := hsConnMap[testAddress2], conn3; got != want {
    78  		t.Fatalf("hsConnMap[%v]=%v, want %v", testAddress2, got, want)
    79  	}
    80  	if got, want := conn2 == conn3, false; got != want {
    81  		t.Fatalf("(conn2==conn3)=%v, want %v", got, want)
    82  	}
    83  }