vitess.io/vitess@v0.16.2/go/vt/vtorc/inst/instance_key_map_test.go (about)

     1  /*
     2     Copyright 2014 Outbrain Inc.
     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 inst
    18  
    19  import (
    20  	"math/rand"
    21  	"testing"
    22  
    23  	"github.com/stretchr/testify/require"
    24  
    25  	"vitess.io/vitess/go/vt/vtorc/config"
    26  )
    27  
    28  func init() {
    29  	config.MarkConfigurationLoaded()
    30  }
    31  
    32  func TestGetInstanceKeys(t *testing.T) {
    33  	for range rand.Perm(10) { // Just running many iterations to cover multiple possible map iteration ordering. Perm() is just used as an array generator here.
    34  		m := *NewInstanceKeyMap()
    35  		m.AddKey(key1)
    36  		m.AddKey(key2)
    37  		keys := m.GetInstanceKeys()
    38  		require.Equal(t, keys[0], key1)
    39  		require.Equal(t, keys[1], key2)
    40  	}
    41  	for range rand.Perm(10) { // Just running many iterations to cover multiple possible map iteration ordering. Perm() is just used as an array generator here.
    42  		m := *NewInstanceKeyMap()
    43  		m.AddKey(key2)
    44  		m.AddKey(key1)
    45  		keys := m.GetInstanceKeys()
    46  		require.Equal(t, keys[0], key1)
    47  		require.Equal(t, keys[1], key2)
    48  	}
    49  }
    50  
    51  func TestInstanceKeyMapToJSON(t *testing.T) {
    52  	m := *NewInstanceKeyMap()
    53  	m.AddKey(key1)
    54  	m.AddKey(key2)
    55  	json, err := m.ToJSON()
    56  	require.NoError(t, err)
    57  	ok := (json == `[{"Hostname":"host1","Port":3306},{"Hostname":"host2","Port":3306}]`) || (json == `[{"Hostname":"host2","Port":3306},{"Hostname":"host1","Port":3306}]`)
    58  	require.True(t, ok)
    59  }
    60  
    61  func TestInstanceKeyMapReadJSON(t *testing.T) {
    62  	json := `[{"Hostname":"host1","Port":3306},{"Hostname":"host2","Port":3306}]`
    63  	m := *NewInstanceKeyMap()
    64  	_ = m.ReadJSON(json)
    65  	require.Equal(t, len(m), 2)
    66  	require.True(t, m[key1])
    67  	require.True(t, m[key2])
    68  }
    69  
    70  func TestEmptyInstanceKeyMapToCommaDelimitedList(t *testing.T) {
    71  	m := *NewInstanceKeyMap()
    72  	res := m.ToCommaDelimitedList()
    73  
    74  	require.Equal(t, res, "")
    75  }
    76  
    77  func TestInstanceKeyMapToCommaDelimitedList(t *testing.T) {
    78  	m := *NewInstanceKeyMap()
    79  	m.AddKey(key1)
    80  	m.AddKey(key2)
    81  	res := m.ToCommaDelimitedList()
    82  
    83  	ok := (res == `host1:3306,host2:3306`) || (res == `host2:3306,host1:3306`)
    84  	require.True(t, ok)
    85  }
    86  
    87  func TestIntersect(t *testing.T) {
    88  	{
    89  		m := NewInstanceKeyMap()
    90  		m.AddKey(key1)
    91  		m.AddKey(key2)
    92  
    93  		other := NewInstanceKeyMap()
    94  		other.AddKey(key3)
    95  		other.AddKey(key2)
    96  
    97  		intersected := m.Intersect(other)
    98  		require.Equal(t, len(*intersected), 1)
    99  	}
   100  	{
   101  		m := NewInstanceKeyMap()
   102  		m.AddKey(key1)
   103  
   104  		other := NewInstanceKeyMap()
   105  		other.AddKey(key3)
   106  		other.AddKey(key2)
   107  
   108  		intersected := m.Intersect(other)
   109  		require.Equal(t, len(*intersected), 0)
   110  	}
   111  	{
   112  		m := NewInstanceKeyMap()
   113  		m.AddKey(key1)
   114  		m.AddKey(key2)
   115  
   116  		other := NewInstanceKeyMap()
   117  		other.AddKey(key1)
   118  		other.AddKey(key3)
   119  		other.AddKey(key2)
   120  
   121  		intersected := m.Intersect(other)
   122  		require.Equal(t, len(*intersected), 2)
   123  	}
   124  
   125  }