1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
|
/*
*
* Copyright 2021 Google LLC
*
* 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
*
* https://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 service
import (
"context"
"crypto/tls"
"testing"
"google.golang.org/grpc/credentials"
grpc "google.golang.org/grpc"
)
const (
testAddress1 = "test_address_1"
testAddress2 = "test_address_2"
testAddress3 = "test_address_3"
)
func TestDial(t *testing.T) {
defer func() func() {
temp := hsDialer
hsDialer = func(ctx context.Context, target string, opts ...grpc.DialOption) (*grpc.ClientConn, error) {
return &grpc.ClientConn{}, nil
}
return func() {
hsDialer = temp
}
}()
ctx := context.Background()
// First call to Dial, it should create a connection to the server running
// at the given address.
conn1, err := Dial(ctx, testAddress1, nil)
if err != nil {
t.Fatalf("first call to Dial(%v) failed: %v", testAddress1, err)
}
if conn1 == nil {
t.Fatalf("first call to Dial(%v)=(nil, _), want not nil", testAddress1)
}
if got, want := hsConnMap[testAddress1], conn1; got != want {
t.Fatalf("hsConnMap[%v] = %v, want %v", testAddress1, got, want)
}
// Second call to Dial should return conn1 above.
conn2, err := Dial(ctx, testAddress1, nil)
if err != nil {
t.Fatalf("second call to Dial(%v) failed: %v", testAddress1, err)
}
if got, want := conn2, conn1; got != want {
t.Fatalf("second call to Dial(%v)=(%v, _), want (%v, _)", testAddress1, got, want)
}
if got, want := hsConnMap[testAddress1], conn1; got != want {
t.Fatalf("hsConnMap[%v] = %v, want %v", testAddress1, got, want)
}
// Third call to Dial using a different address should create a new
// connection.
conn3, err := Dial(ctx, testAddress2, nil)
if err != nil {
t.Fatalf("third call to Dial(%v) failed: %v", testAddress2, err)
}
if conn3 == nil {
t.Fatalf("third call to Dial(%v)=(nil, _), want not nil", testAddress2)
}
if got, want := hsConnMap[testAddress2], conn3; got != want {
t.Fatalf("hsConnMap[%v] = %v, want %v", testAddress2, got, want)
}
if got, want := conn2 == conn3, false; got != want {
t.Fatalf("(conn2 == conn3) = %v, want %v", got, want)
}
// Connect to an address with transportCredentials.
conn4, err := Dial(ctx, testAddress3, credentials.NewTLS(&tls.Config{}))
if err != nil {
t.Fatalf("first call to Dial(%v) failed: %v", testAddress3, err)
}
if conn4 == nil {
t.Fatalf("first call to Dial(%v)=(nil, _), want not nil", testAddress3)
}
if got, want := hsConnMap[testAddress3], conn4; got != want {
t.Fatalf("hsConnMap[%v] = %v, want %v", testAddress3, got, want)
}
}
|
