github.com/m3db/m3@v1.5.0/src/dbnode/topology/host_test.go (about)

     1  // Copyright (c) 2016 Uber Technologies, Inc.
     2  //
     3  // Permission is hereby granted, free of charge, to any person obtaining a copy
     4  // of this software and associated documentation files (the "Software"), to deal
     5  // in the Software without restriction, including without limitation the rights
     6  // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
     7  // copies of the Software, and to permit persons to whom the Software is
     8  // furnished to do so, subject to the following conditions:
     9  //
    10  // The above copyright notice and this permission notice shall be included in
    11  // all copies or substantial portions of the Software.
    12  //
    13  // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
    14  // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
    15  // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
    16  // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
    17  // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
    18  // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
    19  // THE SOFTWARE.
    20  
    21  package topology
    22  
    23  import (
    24  	"testing"
    25  
    26  	"github.com/m3db/m3/src/cluster/services"
    27  	"github.com/m3db/m3/src/cluster/shard"
    28  	"github.com/m3db/m3/src/dbnode/sharding"
    29  	"github.com/m3db/m3/src/x/ident"
    30  
    31  	"github.com/stretchr/testify/assert"
    32  )
    33  
    34  func TestNewHostShardSetFromServiceInstance(t *testing.T) {
    35  	i1 := services.NewServiceInstance().
    36  		SetInstanceID("h1").
    37  		SetEndpoint("h1:9000").
    38  		SetShards(shard.NewShards([]shard.Shard{
    39  			shard.NewShard(1),
    40  			shard.NewShard(2),
    41  			shard.NewShard(3),
    42  		}))
    43  	hash := sharding.DefaultHashFn(3)
    44  	host, err := NewHostShardSetFromServiceInstance(i1, hash)
    45  	assert.NoError(t, err)
    46  	assert.Equal(t, "h1:9000", host.Host().Address())
    47  	assert.Equal(t, "h1", host.Host().ID())
    48  	assert.Equal(t, 3, len(host.ShardSet().AllIDs()))
    49  	assert.Equal(t, uint32(1), host.ShardSet().Min())
    50  	assert.Equal(t, uint32(3), host.ShardSet().Max())
    51  
    52  	id := ident.StringID("id")
    53  	assert.Equal(t, host.ShardSet().Lookup(id), hash(id))
    54  }