frostfs-node/pkg/local_object_storage/engine/shards_test.go

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package engine
import (
"context"
"testing"
"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/shard"
"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/util/logicerr"
"git.frostfs.info/TrueCloudLab/hrw"
"github.com/stretchr/testify/require"
)
func TestRemoveShard(t *testing.T) {
const numOfShards = 6
te := testNewEngine(t).setShardsNum(t, numOfShards)
e, ids := te.engine, te.shardIDs
defer func() { require.NoError(t, e.Close(context.Background())) }()
require.Equal(t, numOfShards, len(e.shardPools))
require.Equal(t, numOfShards, len(e.shards))
removedNum := numOfShards / 2
mSh := make(map[string]bool, numOfShards)
for i, id := range ids {
if i == removedNum {
break
}
mSh[id.String()] = true
}
for id, remove := range mSh {
if remove {
e.removeShards(id)
}
}
require.Equal(t, numOfShards-removedNum, len(e.shardPools))
require.Equal(t, numOfShards-removedNum, len(e.shards))
for id, removed := range mSh {
_, ok := e.shards[id]
require.True(t, ok != removed)
}
}
func TestDisableShards(t *testing.T) {
t.Parallel()
const numOfShards = 2
te := testNewEngine(t).setShardsNum(t, numOfShards)
e, ids := te.engine, te.shardIDs
defer func() { require.NoError(t, e.Close(context.Background())) }()
require.ErrorAs(t, e.DetachShards(ids), new(logicerr.Logical))
require.ErrorAs(t, e.DetachShards(nil), new(logicerr.Logical))
require.ErrorAs(t, e.DetachShards([]*shard.ID{}), new(logicerr.Logical))
require.NoError(t, e.DetachShards([]*shard.ID{ids[0]}))
require.Equal(t, 1, len(e.shards))
}
func TestSortShardsByWeight(t *testing.T) {
t.Parallel()
const numOfShards = 500
var shards1 []hashedShard
var weights1 []float64
var shards2 []hashedShard
for i := 0; i < numOfShards; i++ {
shards1 = append(shards1, hashedShard{
hash: uint64(i),
})
weights1 = append(weights1, 0)
shards2 = append(shards2, hashedShard{
hash: uint64(i),
})
}
hrw.SortHasherSliceByWeightValue(shards1, weights1, 0)
hrw.SortHasherSliceByValue(shards2, 0)
require.Equal(t, shards1, shards2)
}