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/*
*
* Copyright 2018 gRPC 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 service
import (
"testing"
grpc "google.golang.org/grpc"
)
const (
testAddress1 = "some_address_1"
testAddress2 = "some_address_2"
)
func TestDial(t *testing.T) {
defer func() func() {
temp := hsDialer
hsDialer = func(target string, opts ...grpc.DialOption) (*grpc.ClientConn, error) {
return &grpc.ClientConn{}, nil
}
return func() {
hsDialer = temp
}
}()
// First call to Dial, it should create a connection to the server running
// at the given address.
conn1, err := Dial(testAddress1)
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(testAddress1)
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(testAddress2)
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)
}
}
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