github.com/cloudwego/kitex@v0.9.0/pkg/loadbalance/lbcache/hookable_test.go (about)

     1  /*
     2   * Copyright 2021 CloudWeGo 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 lbcache
    18  
    19  import (
    20  	"testing"
    21  
    22  	"github.com/cloudwego/kitex/internal/test"
    23  	"github.com/cloudwego/kitex/pkg/discovery"
    24  )
    25  
    26  func TestHookableRebalance(t *testing.T) {
    27  	mockRb := &mockRebalancer{}
    28  
    29  	hr := newHookRebalancer(mockRb)
    30  	idx := hr.RegisterRebalanceHook(func(ch *discovery.Change) {})
    31  	test.Assert(t, idx == 0)
    32  	idx = hr.RegisterRebalanceHook(func(ch *discovery.Change) {})
    33  	test.Assert(t, idx == 1)
    34  	idx = hr.RegisterRebalanceHook(func(ch *discovery.Change) {})
    35  	test.Assert(t, idx == 2)
    36  	hr.DeregisterRebalanceHook(idx)
    37  	idx = hr.RegisterRebalanceHook(func(ch *discovery.Change) {})
    38  	test.Assert(t, idx == 3)
    39  	idx = hr.RegisterRebalanceHook(func(ch *discovery.Change) {})
    40  	test.Assert(t, idx == 4)
    41  	hr.DeregisterRebalanceHook(idx)
    42  	hr.DeregisterRebalanceHook(10)
    43  }
    44  
    45  func TestHookableDelete(t *testing.T) {
    46  	mockRb := &mockRebalancer{}
    47  
    48  	hr := newHookRebalancer(mockRb)
    49  	idx := hr.RegisterDeleteHook(func(ch *discovery.Change) {})
    50  	test.Assert(t, idx == 0)
    51  	idx = hr.RegisterDeleteHook(func(ch *discovery.Change) {})
    52  	test.Assert(t, idx == 1)
    53  	idx = hr.RegisterDeleteHook(func(ch *discovery.Change) {})
    54  	test.Assert(t, idx == 2)
    55  	hr.DeregisterDeleteHook(idx)
    56  	idx = hr.RegisterDeleteHook(func(ch *discovery.Change) {})
    57  	test.Assert(t, idx == 3)
    58  	idx = hr.RegisterDeleteHook(func(ch *discovery.Change) {})
    59  	test.Assert(t, idx == 4)
    60  	hr.DeregisterDeleteHook(idx)
    61  	hr.DeregisterDeleteHook(10)
    62  }