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package sqlite3
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import (
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	"context"
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	"crypto/rand"
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	"testing"
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	"github.com/stretchr/testify/assert"
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)
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func TestEmpty(t *testing.T) {
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	as := assert.New(t)
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	kv := testGetKV(t)
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	key := make([]byte, 6)
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	rand.Read(key)
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	val, err := kv.Get(context.Background(), key)
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	as.NoError(err)
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	as.Nil(val)
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	err = kv.Put(context.Background(), key, []byte("v"))
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	as.NoError(err)
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	val, err = kv.Get(context.Background(), key)
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	as.NoError(err)
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	as.NotNil(val)
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	err = kv.Delete(context.Background(), key)
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	as.NoError(err)
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	val, err = kv.Get(context.Background(), key)
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	as.NoError(err)
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	as.Nil(val)
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	keys, err := kv.RangeKeys(context.Background(), 0, 0)
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	as.NoError(err)
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	exp, err := kv.Export(context.Background(), keys)
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	as.NoError(err)
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	kv2 := testGetKV(t)
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	as.NoError(kv2.Import(context.Background(), keys, exp))
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	val, err = kv2.Get(context.Background(), key)
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	as.NoError(err)
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	as.Nil(val)
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	err = kv2.Put(context.Background(), key, []byte{})
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	as.NoError(err)
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	val, err = kv2.Get(context.Background(), key)
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	as.NoError(err)
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	as.NotNil(val)
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}
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func TestEmptyValueTransferRoundTrip(t *testing.T) {
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	as := assert.New(t)
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	kv := testGetKV(t)
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	key := make([]byte, 6)
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	rand.Read(key)
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	err := kv.Put(context.Background(), key, []byte{})
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	as.NoError(err)
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	keys, err := kv.RangeKeys(context.Background(), 0, 0)
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	as.NoError(err)
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	exp, err := kv.Export(context.Background(), keys)
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	as.NoError(err)
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	kv2 := testGetKV(t)
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	as.NoError(kv2.Import(context.Background(), keys, exp))
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	val, err := kv2.Get(context.Background(), key)
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	as.NoError(err)
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	as.NotNil(val)
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	as.Len(val, 0)
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}