github.com/m3db/m3@v1.5.0/src/dbnode/runtime/runtime_options_manager_test.go (about)

     1  // Copyright (c) 2017 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 runtime
    22  
    23  import (
    24  	"sync"
    25  	"testing"
    26  	"time"
    27  
    28  	"github.com/stretchr/testify/assert"
    29  	"github.com/stretchr/testify/require"
    30  )
    31  
    32  type mockListener struct {
    33  	sync.RWMutex
    34  	value Options
    35  }
    36  
    37  func (l *mockListener) SetRuntimeOptions(value Options) {
    38  	l.Lock()
    39  	defer l.Unlock()
    40  	l.value = value
    41  }
    42  
    43  func (l *mockListener) runtimeOptions() Options {
    44  	l.RLock()
    45  	defer l.RUnlock()
    46  	return l.value
    47  }
    48  
    49  func TestRuntimeOptionsManagerUpdate(t *testing.T) {
    50  	mgr := NewOptionsManager()
    51  	opts := NewOptions().SetWriteNewSeriesAsync(false)
    52  	require.NoError(t, mgr.Update(opts))
    53  
    54  	assert.Equal(t, false, mgr.Get().WriteNewSeriesAsync())
    55  
    56  	l := &mockListener{}
    57  	assert.Nil(t, l.value)
    58  
    59  	// Ensure immediately sets the value
    60  	mgr.RegisterListener(l)
    61  	assert.Equal(t, opts, l.runtimeOptions())
    62  
    63  	// Update and verify
    64  	mgr.Update(opts.SetWriteNewSeriesAsync(true))
    65  
    66  	// Verify listener receives update
    67  	for func() bool {
    68  		return !l.runtimeOptions().WriteNewSeriesAsync()
    69  	}() {
    70  		time.Sleep(10 * time.Millisecond)
    71  	}
    72  	assert.Equal(t, true, l.runtimeOptions().WriteNewSeriesAsync())
    73  }