Function TestLifecycler_InstancesInZoneCount

ring/lifecycler_test.go:283–442

(t *testing.T)

}

func TestLifecycler_InstancesInZoneCount(t *testing.T) {
	t.Parallel()

	ringStore, closer := consul.NewInMemoryClient(GetCodec(), log.NewNopLogger(), nil)
	t.Cleanup(func() { assert.NoError(t, closer.Close()) })

	var ringConfig Config
	flagext.DefaultValues(&ringConfig)
	ringConfig.KVStore.Mock = ringStore

	instances := []struct {
		zone                                string
		healthy                             bool
		expectedInstancesInZoneCount        int
		expectedInstancesCount              int
		expectedHealthyInstancesCount       int
		expectedZonesCount                  int
		expectedHealthyInstancesInZoneCount int
	}{
		{
			zone:    "zone-a",
			healthy: true,
			// after adding a healthy instance in zone-a, expectedInstancesInZoneCount in zone-a becomes 1
			expectedInstancesInZoneCount: 1,
			// after adding a healthy instance in zone-a, expectedInstancesCount becomes 1
			expectedInstancesCount: 1,
			// after adding a healthy instance in zone-a, expectedHealthyInstancesCount becomes 1
			expectedHealthyInstancesCount: 1,
			// after adding a healthy instance in zone-a, expectedZonesCount is 1
			expectedZonesCount: 1,
			// after adding a healthy instance in zone-a, expectedHealthyInstancesInZoneCount is 1
			expectedHealthyInstancesInZoneCount: 1,
		},
		{
			zone:    "zone-a",
			healthy: false,
			// after adding an unhealthy instance in zone-a, expectedInstancesInZoneCount in zone-a becomes 2
			expectedInstancesInZoneCount: 2,
			// after adding an unhealthy instance in zone-a, expectedInstancesCount becomes 2
			expectedInstancesCount: 2,
			// after adding an unhealthy instance in zone-a, expectedHealthyInstancesCount remains 1
			expectedHealthyInstancesCount: 1,
			// zone-a was already added, so expectedZonesCount remains 1
			expectedZonesCount: 1,
			// after adding an unhealthy instance in zone-a, expectedHealthyInstancesInZoneCount remains 1
			expectedHealthyInstancesInZoneCount: 1,
		},
		{
			zone:    "zone-a",
			healthy: true,
			// after adding a healthy instance in zone-a, expectedInstancesInZoneCount in zone-a becomes 3
			expectedInstancesInZoneCount: 3,
			// after adding a healthy instance in zone-a, expectedInstancesCount becomes 3
			expectedInstancesCount: 3,
			// after adding a healthy instance in zone-a, expectedHealthyInstancesCount becomes 2
			expectedHealthyInstancesCount: 2,
			// zone-a was already added, so expectedZonesCount remains 1
			expectedZonesCount: 1,