vitess.io/vitess@v0.16.2/go/vt/vtgate/vtgateconn/vtgateconn_test.go (about)

     1  /*
     2  Copyright 2019 The Vitess Authors.
     3  
     4  Licensed under the Apache License, Version 2.0 (the "License");
     5  you may not use this file except in compliance with the License.
     6  You may obtain a copy of the License at
     7  
     8      http://www.apache.org/licenses/LICENSE-2.0
     9  
    10  Unless required by applicable law or agreed to in writing, software
    11  distributed under the License is distributed on an "AS IS" BASIS,
    12  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    13  See the License for the specific language governing permissions and
    14  limitations under the License.
    15  */
    16  
    17  package vtgateconn
    18  
    19  import (
    20  	"testing"
    21  
    22  	"context"
    23  )
    24  
    25  func TestRegisterDialer(t *testing.T) {
    26  	dialerFunc := func(context.Context, string) (Impl, error) {
    27  		return nil, nil
    28  	}
    29  	RegisterDialer("test1", dialerFunc)
    30  	RegisterDialer("test1", dialerFunc)
    31  }
    32  
    33  func TestGetDialerWithProtocol(t *testing.T) {
    34  	protocol := "test2"
    35  	_, err := DialProtocol(context.Background(), protocol, "")
    36  	if err == nil || err.Error() != "no dialer registered for VTGate protocol "+protocol {
    37  		t.Fatalf("protocol: %s is not registered, should return error: %v", protocol, err)
    38  	}
    39  	RegisterDialer(protocol, func(context.Context, string) (Impl, error) {
    40  		return nil, nil
    41  	})
    42  	c, err := DialProtocol(context.Background(), protocol, "")
    43  	if err != nil || c == nil {
    44  		t.Fatalf("dialerFunc has been registered, should not get nil: %v %v", err, c)
    45  	}
    46  }
    47  
    48  func TestDeregisterDialer(t *testing.T) {
    49  	const protocol = "test3"
    50  
    51  	RegisterDialer(protocol, func(context.Context, string) (Impl, error) {
    52  		return nil, nil
    53  	})
    54  
    55  	DeregisterDialer(protocol)
    56  
    57  	_, err := DialProtocol(context.Background(), protocol, "")
    58  	if err == nil || err.Error() != "no dialer registered for VTGate protocol "+protocol {
    59  		t.Fatalf("protocol: %s is not registered, should return error: %v", protocol, err)
    60  	}
    61  }