github.com/m3db/m3@v1.5.0/src/cmd/services/m3coordinator/downsample/leader_local_test.go (about)

     1  // Copyright (c) 2018 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 downsample
    22  
    23  import (
    24  	"testing"
    25  
    26  	"github.com/m3db/m3/src/cluster/services"
    27  	"github.com/m3db/m3/src/cluster/services/leader/campaign"
    28  
    29  	"github.com/stretchr/testify/assert"
    30  	"github.com/stretchr/testify/require"
    31  )
    32  
    33  func TestLeaderLocalService(t *testing.T) {
    34  	id := services.NewServiceID().SetName("foo")
    35  	electionID := "bar"
    36  	leaderSvc := newLocalLeaderService(id)
    37  
    38  	ch, err := leaderSvc.Campaign(electionID, nil)
    39  	require.NoError(t, err)
    40  
    41  	status := <-ch
    42  	assert.NoError(t, status.Err)
    43  	assert.Equal(t, campaign.Leader, status.State)
    44  
    45  	err = leaderSvc.Resign(electionID)
    46  	require.NoError(t, err)
    47  
    48  	status = <-ch
    49  	assert.NoError(t, status.Err)
    50  	assert.Equal(t, campaign.Follower, status.State)
    51  
    52  	leader, err := leaderSvc.Leader(electionID)
    53  	require.NoError(t, err)
    54  	assert.Equal(t, id.String(), leader)
    55  
    56  	err = leaderSvc.Close()
    57  	require.NoError(t, err)
    58  }