109 lines
3.3 KiB
Go
109 lines
3.3 KiB
Go
package indexes
|
|
|
|
import (
|
|
"testing"
|
|
|
|
"github.com/stretchr/testify/require"
|
|
|
|
"cosmossdk.io/collections"
|
|
)
|
|
|
|
type (
|
|
Address = string
|
|
Denom = string
|
|
Amount = uint64
|
|
)
|
|
|
|
// our balance index, allows us to efficiently create an index between the key that maps
|
|
// balances which is a collections.Pair[Address, Denom] and the Denom.
|
|
type balanceIndex struct {
|
|
Denom *ReversePair[Address, Denom, Amount]
|
|
}
|
|
|
|
func (b balanceIndex) IndexesList() []collections.Index[collections.Pair[Address, Denom], Amount] {
|
|
return []collections.Index[collections.Pair[Address, Denom], Amount]{b.Denom}
|
|
}
|
|
|
|
func TestReversePair(t *testing.T) {
|
|
sk, ctx := deps()
|
|
sb := collections.NewSchemaBuilder(sk)
|
|
// we create an indexed map that maps balances, which are saved as
|
|
// key: Pair[Address, Denom]
|
|
// value: Amount
|
|
keyCodec := collections.PairKeyCodec(collections.StringKey, collections.StringKey)
|
|
|
|
indexedMap := collections.NewIndexedMap(
|
|
sb,
|
|
collections.NewPrefix("balances"), "balances",
|
|
keyCodec,
|
|
collections.Uint64Value,
|
|
balanceIndex{
|
|
Denom: NewReversePair[Amount](sb, collections.NewPrefix("denom_index"), "denom_index", keyCodec),
|
|
},
|
|
)
|
|
|
|
err := indexedMap.Set(ctx, collections.Join("address1", "atom"), 100)
|
|
require.NoError(t, err)
|
|
|
|
err = indexedMap.Set(ctx, collections.Join("address1", "osmo"), 200)
|
|
require.NoError(t, err)
|
|
|
|
err = indexedMap.Set(ctx, collections.Join("address2", "osmo"), 300)
|
|
require.NoError(t, err)
|
|
|
|
// assert if we iterate over osmo we find address1 and address2
|
|
iter, err := indexedMap.Indexes.Denom.MatchExact(ctx, "osmo")
|
|
require.NoError(t, err)
|
|
defer iter.Close()
|
|
|
|
pks, err := iter.PrimaryKeys()
|
|
require.NoError(t, err)
|
|
require.Equal(t, "address1", pks[0].K1())
|
|
require.Equal(t, "address2", pks[1].K1())
|
|
|
|
// assert if we remove address1 atom balance, we can no longer find it in the index
|
|
err = indexedMap.Remove(ctx, collections.Join("address1", "atom"))
|
|
require.NoError(t, err)
|
|
iter, err = indexedMap.Indexes.Denom.MatchExact(ctx, "atom")
|
|
require.NoError(t, err)
|
|
defer iter.Close()
|
|
pks, err = iter.PrimaryKeys()
|
|
require.NoError(t, err)
|
|
require.Empty(t, pks)
|
|
}
|
|
|
|
func TestUncheckedReversePair(t *testing.T) {
|
|
sk, ctx := deps()
|
|
sb := collections.NewSchemaBuilder(sk)
|
|
prefix := collections.NewPrefix("prefix")
|
|
keyCodec := collections.PairKeyCodec(collections.StringKey, collections.StringKey)
|
|
|
|
uncheckedRp := NewReversePair[Amount](sb, prefix, "denom_index", keyCodec, WithReversePairUncheckedValue())
|
|
rp := NewReversePair[Amount](sb, prefix, "denom_index", keyCodec)
|
|
|
|
rawKey, err := collections.EncodeKeyWithPrefix(prefix, uncheckedRp.KeyCodec(), collections.Join("atom", "address1"))
|
|
require.NoError(t, err)
|
|
|
|
require.NoError(t, sk.OpenKVStore(ctx).Set(rawKey, []byte("i should not be here")))
|
|
|
|
// normal reverse pair fails
|
|
err = rp.Walk(ctx, nil, func(denom, address string) (bool, error) {
|
|
return false, nil
|
|
})
|
|
require.ErrorIs(t, err, collections.ErrEncoding)
|
|
|
|
// unchecked reverse pair succeeds
|
|
err = uncheckedRp.Walk(ctx, nil, func(indexingKey, indexedKey string) (stop bool, err error) {
|
|
require.Equal(t, "atom", indexingKey)
|
|
return true, nil
|
|
})
|
|
require.NoError(t, err)
|
|
|
|
// unchecked reverse pair lazily updates
|
|
err = uncheckedRp.Reference(ctx, collections.Join("address1", "atom"), 0, nil)
|
|
require.NoError(t, err)
|
|
rawValue, err := sk.OpenKVStore(ctx).Get(rawKey)
|
|
require.NoError(t, err)
|
|
require.Equal(t, []byte{}, rawValue)
|
|
}
|