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store_test.go
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store_test.go
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package prefix
import (
"crypto/rand"
"testing"
"github.com/cosmos/cosmos-sdk/store/dbadapter"
"github.com/cosmos/cosmos-sdk/store/gaskv"
"github.com/cosmos/cosmos-sdk/store/iavl"
"github.com/cosmos/cosmos-sdk/store/types"
sdk "github.com/cosmos/cosmos-sdk/types"
"github.com/stretchr/testify/require"
tiavl "github.com/tendermint/iavl"
dbm "github.com/tendermint/tendermint/libs/db"
)
// copied from iavl/store_test.go
var (
cacheSize = 100
numRecent int64 = 5
storeEvery int64 = 3
)
func bz(s string) []byte { return []byte(s) }
type kvpair struct {
key []byte
value []byte
}
func genRandomKVPairs(t *testing.T) []kvpair {
kvps := make([]kvpair, 20)
for i := 0; i < 20; i++ {
kvps[i].key = make([]byte, 32)
rand.Read(kvps[i].key)
kvps[i].value = make([]byte, 32)
rand.Read(kvps[i].value)
}
return kvps
}
func setRandomKVPairs(t *testing.T, store types.KVStore) []kvpair {
kvps := genRandomKVPairs(t)
for _, kvp := range kvps {
store.Set(kvp.key, kvp.value)
}
return kvps
}
func testPrefixStore(t *testing.T, baseStore types.KVStore, prefix []byte) {
prefixStore := NewStore(baseStore, prefix)
prefixPrefixStore := NewStore(prefixStore, []byte("prefix"))
require.Panics(t, func() { prefixStore.Get(nil) })
require.Panics(t, func() { prefixStore.Set(nil, []byte{}) })
kvps := setRandomKVPairs(t, prefixPrefixStore)
for i := 0; i < 20; i++ {
key := kvps[i].key
value := kvps[i].value
require.True(t, prefixPrefixStore.Has(key))
require.Equal(t, value, prefixPrefixStore.Get(key))
key = append([]byte("prefix"), key...)
require.True(t, prefixStore.Has(key))
require.Equal(t, value, prefixStore.Get(key))
key = append(prefix, key...)
require.True(t, baseStore.Has(key))
require.Equal(t, value, baseStore.Get(key))
key = kvps[i].key
prefixPrefixStore.Delete(key)
require.False(t, prefixPrefixStore.Has(key))
require.Nil(t, prefixPrefixStore.Get(key))
key = append([]byte("prefix"), key...)
require.False(t, prefixStore.Has(key))
require.Nil(t, prefixStore.Get(key))
key = append(prefix, key...)
require.False(t, baseStore.Has(key))
require.Nil(t, baseStore.Get(key))
}
}
func TestIAVLStorePrefix(t *testing.T) {
db := dbm.NewMemDB()
tree := tiavl.NewMutableTree(db, cacheSize)
iavlStore := iavl.UnsafeNewStore(tree, numRecent, storeEvery)
testPrefixStore(t, iavlStore, []byte("test"))
}
func TestPrefixKVStoreNoNilSet(t *testing.T) {
meter := types.NewGasMeter(100000000)
mem := dbadapter.Store{dbm.NewMemDB()}
gasStore := gaskv.NewStore(mem, meter, types.KVGasConfig())
require.Panics(t, func() { gasStore.Set([]byte("key"), nil) }, "setting a nil value should panic")
}
func TestPrefixStoreIterate(t *testing.T) {
db := dbm.NewMemDB()
baseStore := dbadapter.Store{db}
prefix := []byte("test")
prefixStore := NewStore(baseStore, prefix)
setRandomKVPairs(t, prefixStore)
bIter := types.KVStorePrefixIterator(baseStore, prefix)
pIter := types.KVStorePrefixIterator(prefixStore, nil)
for bIter.Valid() && pIter.Valid() {
require.Equal(t, bIter.Key(), append(prefix, pIter.Key()...))
require.Equal(t, bIter.Value(), pIter.Value())
bIter.Next()
pIter.Next()
}
bIter.Close()
pIter.Close()
}
func incFirstByte(bz []byte) {
bz[0]++
}
func TestCloneAppend(t *testing.T) {
kvps := genRandomKVPairs(t)
for _, kvp := range kvps {
bz := cloneAppend(kvp.key, kvp.value)
require.Equal(t, bz, append(kvp.key, kvp.value...))
incFirstByte(bz)
require.NotEqual(t, bz, append(kvp.key, kvp.value...))
bz = cloneAppend(kvp.key, kvp.value)
incFirstByte(kvp.key)
require.NotEqual(t, bz, append(kvp.key, kvp.value...))
bz = cloneAppend(kvp.key, kvp.value)
incFirstByte(kvp.value)
require.NotEqual(t, bz, append(kvp.key, kvp.value...))
}
}
func TestPrefixStoreIteratorEdgeCase(t *testing.T) {
db := dbm.NewMemDB()
baseStore := dbadapter.Store{db}
// overflow in cpIncr
prefix := []byte{0xAA, 0xFF, 0xFF}
prefixStore := NewStore(baseStore, prefix)
// ascending order
baseStore.Set([]byte{0xAA, 0xFF, 0xFE}, []byte{})
baseStore.Set([]byte{0xAA, 0xFF, 0xFE, 0x00}, []byte{})
baseStore.Set([]byte{0xAA, 0xFF, 0xFF}, []byte{})
baseStore.Set([]byte{0xAA, 0xFF, 0xFF, 0x00}, []byte{})
baseStore.Set([]byte{0xAB}, []byte{})
baseStore.Set([]byte{0xAB, 0x00}, []byte{})
baseStore.Set([]byte{0xAB, 0x00, 0x00}, []byte{})
iter := prefixStore.Iterator(nil, nil)
checkDomain(t, iter, nil, nil)
checkItem(t, iter, []byte{}, bz(""))
checkNext(t, iter, true)
checkItem(t, iter, []byte{0x00}, bz(""))
checkNext(t, iter, false)
checkInvalid(t, iter)
iter.Close()
}
func TestPrefixStoreReverseIteratorEdgeCase(t *testing.T) {
db := dbm.NewMemDB()
baseStore := dbadapter.Store{db}
// overflow in cpIncr
prefix := []byte{0xAA, 0xFF, 0xFF}
prefixStore := NewStore(baseStore, prefix)
// descending order
baseStore.Set([]byte{0xAB, 0x00, 0x00}, []byte{})
baseStore.Set([]byte{0xAB, 0x00}, []byte{})
baseStore.Set([]byte{0xAB}, []byte{})
baseStore.Set([]byte{0xAA, 0xFF, 0xFF, 0x00}, []byte{})
baseStore.Set([]byte{0xAA, 0xFF, 0xFF}, []byte{})
baseStore.Set([]byte{0xAA, 0xFF, 0xFE, 0x00}, []byte{})
baseStore.Set([]byte{0xAA, 0xFF, 0xFE}, []byte{})
iter := prefixStore.ReverseIterator(nil, nil)
checkDomain(t, iter, nil, nil)
checkItem(t, iter, []byte{0x00}, bz(""))
checkNext(t, iter, true)
checkItem(t, iter, []byte{}, bz(""))
checkNext(t, iter, false)
checkInvalid(t, iter)
iter.Close()
db = dbm.NewMemDB()
baseStore = dbadapter.Store{db}
// underflow in cpDecr
prefix = []byte{0xAA, 0x00, 0x00}
prefixStore = NewStore(baseStore, prefix)
baseStore.Set([]byte{0xAB, 0x00, 0x01, 0x00, 0x00}, []byte{})
baseStore.Set([]byte{0xAB, 0x00, 0x01, 0x00}, []byte{})
baseStore.Set([]byte{0xAB, 0x00, 0x01}, []byte{})
baseStore.Set([]byte{0xAA, 0x00, 0x00, 0x00}, []byte{})
baseStore.Set([]byte{0xAA, 0x00, 0x00}, []byte{})
baseStore.Set([]byte{0xA9, 0xFF, 0xFF, 0x00}, []byte{})
baseStore.Set([]byte{0xA9, 0xFF, 0xFF}, []byte{})
iter = prefixStore.ReverseIterator(nil, nil)
checkDomain(t, iter, nil, nil)
checkItem(t, iter, []byte{0x00}, bz(""))
checkNext(t, iter, true)
checkItem(t, iter, []byte{}, bz(""))
checkNext(t, iter, false)
checkInvalid(t, iter)
iter.Close()
}
// Tests below are ported from https://github.com/tendermint/tendermint/blob/master/libs/db/prefix_db_test.go
func mockStoreWithStuff() types.KVStore {
db := dbm.NewMemDB()
store := dbadapter.Store{db}
// Under "key" prefix
store.Set(bz("key"), bz("value"))
store.Set(bz("key1"), bz("value1"))
store.Set(bz("key2"), bz("value2"))
store.Set(bz("key3"), bz("value3"))
store.Set(bz("something"), bz("else"))
store.Set(bz(""), bz(""))
store.Set(bz("k"), bz(sdk.PrefixValidator))
store.Set(bz("ke"), bz("valu"))
store.Set(bz("kee"), bz("valuu"))
return store
}
func checkValue(t *testing.T, store types.KVStore, key []byte, expected []byte) {
bz := store.Get(key)
require.Equal(t, expected, bz)
}
func checkValid(t *testing.T, itr types.Iterator, expected bool) {
valid := itr.Valid()
require.Equal(t, expected, valid)
}
func checkNext(t *testing.T, itr types.Iterator, expected bool) {
itr.Next()
valid := itr.Valid()
require.Equal(t, expected, valid)
}
func checkDomain(t *testing.T, itr types.Iterator, start, end []byte) {
ds, de := itr.Domain()
require.Equal(t, start, ds)
require.Equal(t, end, de)
}
func checkItem(t *testing.T, itr types.Iterator, key, value []byte) {
require.Exactly(t, key, itr.Key())
require.Exactly(t, value, itr.Value())
}
func checkInvalid(t *testing.T, itr types.Iterator) {
checkValid(t, itr, false)
checkKeyPanics(t, itr)
checkValuePanics(t, itr)
checkNextPanics(t, itr)
}
func checkKeyPanics(t *testing.T, itr types.Iterator) {
require.Panics(t, func() { itr.Key() })
}
func checkValuePanics(t *testing.T, itr types.Iterator) {
require.Panics(t, func() { itr.Value() })
}
func checkNextPanics(t *testing.T, itr types.Iterator) {
require.Panics(t, func() { itr.Next() })
}
func TestPrefixDBSimple(t *testing.T) {
store := mockStoreWithStuff()
pstore := NewStore(store, bz("key"))
checkValue(t, pstore, bz("key"), nil)
checkValue(t, pstore, bz(""), bz("value"))
checkValue(t, pstore, bz("key1"), nil)
checkValue(t, pstore, bz("1"), bz("value1"))
checkValue(t, pstore, bz("key2"), nil)
checkValue(t, pstore, bz("2"), bz("value2"))
checkValue(t, pstore, bz("key3"), nil)
checkValue(t, pstore, bz("3"), bz("value3"))
checkValue(t, pstore, bz("something"), nil)
checkValue(t, pstore, bz("k"), nil)
checkValue(t, pstore, bz("ke"), nil)
checkValue(t, pstore, bz("kee"), nil)
}
func TestPrefixDBIterator1(t *testing.T) {
store := mockStoreWithStuff()
pstore := NewStore(store, bz("key"))
itr := pstore.Iterator(nil, nil)
checkDomain(t, itr, nil, nil)
checkItem(t, itr, bz(""), bz("value"))
checkNext(t, itr, true)
checkItem(t, itr, bz("1"), bz("value1"))
checkNext(t, itr, true)
checkItem(t, itr, bz("2"), bz("value2"))
checkNext(t, itr, true)
checkItem(t, itr, bz("3"), bz("value3"))
checkNext(t, itr, false)
checkInvalid(t, itr)
itr.Close()
}
func TestPrefixDBIterator2(t *testing.T) {
store := mockStoreWithStuff()
pstore := NewStore(store, bz("key"))
itr := pstore.Iterator(nil, bz(""))
checkDomain(t, itr, nil, bz(""))
checkInvalid(t, itr)
itr.Close()
}
func TestPrefixDBIterator3(t *testing.T) {
store := mockStoreWithStuff()
pstore := NewStore(store, bz("key"))
itr := pstore.Iterator(bz(""), nil)
checkDomain(t, itr, bz(""), nil)
checkItem(t, itr, bz(""), bz("value"))
checkNext(t, itr, true)
checkItem(t, itr, bz("1"), bz("value1"))
checkNext(t, itr, true)
checkItem(t, itr, bz("2"), bz("value2"))
checkNext(t, itr, true)
checkItem(t, itr, bz("3"), bz("value3"))
checkNext(t, itr, false)
checkInvalid(t, itr)
itr.Close()
}
func TestPrefixDBIterator4(t *testing.T) {
store := mockStoreWithStuff()
pstore := NewStore(store, bz("key"))
itr := pstore.Iterator(bz(""), bz(""))
checkDomain(t, itr, bz(""), bz(""))
checkInvalid(t, itr)
itr.Close()
}
func TestPrefixDBReverseIterator1(t *testing.T) {
store := mockStoreWithStuff()
pstore := NewStore(store, bz("key"))
itr := pstore.ReverseIterator(nil, nil)
checkDomain(t, itr, nil, nil)
checkItem(t, itr, bz("3"), bz("value3"))
checkNext(t, itr, true)
checkItem(t, itr, bz("2"), bz("value2"))
checkNext(t, itr, true)
checkItem(t, itr, bz("1"), bz("value1"))
checkNext(t, itr, true)
checkItem(t, itr, bz(""), bz("value"))
checkNext(t, itr, false)
checkInvalid(t, itr)
itr.Close()
}
func TestPrefixDBReverseIterator2(t *testing.T) {
store := mockStoreWithStuff()
pstore := NewStore(store, bz("key"))
itr := pstore.ReverseIterator(bz(""), nil)
checkDomain(t, itr, bz(""), nil)
checkItem(t, itr, bz("3"), bz("value3"))
checkNext(t, itr, true)
checkItem(t, itr, bz("2"), bz("value2"))
checkNext(t, itr, true)
checkItem(t, itr, bz("1"), bz("value1"))
checkNext(t, itr, true)
checkItem(t, itr, bz(""), bz("value"))
checkNext(t, itr, false)
checkInvalid(t, itr)
itr.Close()
}
func TestPrefixDBReverseIterator3(t *testing.T) {
store := mockStoreWithStuff()
pstore := NewStore(store, bz("key"))
itr := pstore.ReverseIterator(nil, bz(""))
checkDomain(t, itr, nil, bz(""))
checkInvalid(t, itr)
itr.Close()
}
func TestPrefixDBReverseIterator4(t *testing.T) {
store := mockStoreWithStuff()
pstore := NewStore(store, bz("key"))
itr := pstore.ReverseIterator(bz(""), bz(""))
checkInvalid(t, itr)
itr.Close()
}