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array_test.go
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/*
* Atree - Scalable Arrays and Ordered Maps
*
* Copyright Flow Foundation
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package atree_test
import (
"errors"
"math"
"math/rand"
"reflect"
"runtime"
"strings"
"testing"
"github.com/stretchr/testify/require"
"github.com/onflow/atree"
"github.com/onflow/atree/test_utils"
)
func testEmptyArrayV0(
t *testing.T,
storage *atree.PersistentSlabStorage,
typeInfo atree.TypeInfo,
address atree.Address,
array *atree.Array,
) {
testArrayV0(t, storage, typeInfo, address, array, nil, false)
}
func testEmptyArray(
t *testing.T,
storage *atree.PersistentSlabStorage,
typeInfo atree.TypeInfo,
address atree.Address,
array *atree.Array,
) {
testArray(t, storage, typeInfo, address, array, nil, false)
}
func testArrayV0(
t *testing.T,
storage *atree.PersistentSlabStorage,
typeInfo atree.TypeInfo,
address atree.Address,
array *atree.Array,
expectedValues test_utils.ExpectedArrayValue,
hasNestedArrayMapElement bool,
) {
_testArray(t, storage, typeInfo, address, array, expectedValues, hasNestedArrayMapElement, false)
}
func testArray(
t *testing.T,
storage *atree.PersistentSlabStorage,
typeInfo atree.TypeInfo,
address atree.Address,
array *atree.Array,
expectedValues test_utils.ExpectedArrayValue,
hasNestedArrayMapElement bool,
) {
_testArray(t, storage, typeInfo, address, array, expectedValues, hasNestedArrayMapElement, true)
}
// _testArray tests array elements, serialization, and in-memory slab tree.
func _testArray(
t *testing.T,
storage *atree.PersistentSlabStorage,
typeInfo atree.TypeInfo,
address atree.Address,
array *atree.Array,
expectedValues test_utils.ExpectedArrayValue,
hasNestedArrayMapElement bool,
inlineEnabled bool,
) {
require.True(t, test_utils.CompareTypeInfo(typeInfo, array.Type()))
require.Equal(t, address, array.Address())
require.Equal(t, uint64(len(expectedValues)), array.Count())
var err error
// Verify array elements
for i, expected := range expectedValues {
actual, err := array.Get(uint64(i))
require.NoError(t, err)
testValueEqual(t, expected, actual)
}
// Verify array elements by iterator
i := 0
err = array.IterateReadOnly(func(v atree.Value) (bool, error) {
testValueEqual(t, expectedValues[i], v)
i++
return true, nil
})
require.NoError(t, err)
require.Equal(t, len(expectedValues), i)
// Verify in-memory slabs
err = atree.VerifyArray(array, address, typeInfo, test_utils.CompareTypeInfo, test_utils.GetHashInput, inlineEnabled)
if err != nil {
atree.PrintArray(array)
}
require.NoError(t, err)
// Verify slab serializations
err = atree.VerifyArraySerialization(
array,
atree.GetCBORDecMode(storage),
atree.GetCBOREncMode(storage),
storage.DecodeStorable,
storage.DecodeTypeInfo,
func(a, b atree.Storable) bool {
return reflect.DeepEqual(a, b)
},
)
if err != nil {
atree.PrintArray(array)
}
require.NoError(t, err)
// Check storage slab tree
rootIDSet, err := atree.CheckStorageHealth(storage, 1)
require.NoError(t, err)
rootIDs := make([]atree.SlabID, 0, len(rootIDSet))
for id := range rootIDSet {
rootIDs = append(rootIDs, id)
}
require.Equal(t, 1, len(rootIDs))
require.Equal(t, array.SlabID(), rootIDs[0])
// Encode all non-nil slab
deltas := atree.GetDeltas(storage)
encodedSlabs := make(map[atree.SlabID][]byte)
for id, slab := range deltas {
if slab != nil {
b, err := atree.EncodeSlab(slab, atree.GetCBOREncMode(storage))
require.NoError(t, err)
encodedSlabs[id] = b
}
}
// Test decoded array from new storage to force slab decoding
decodedArray, err := atree.NewArrayWithRootID(
newTestPersistentStorageWithBaseStorageAndDeltas(t, atree.GetBaseStorage(storage), encodedSlabs),
array.SlabID())
require.NoError(t, err)
// Verify decoded array elements
for i, expected := range expectedValues {
actual, err := decodedArray.Get(uint64(i))
require.NoError(t, err)
testValueEqual(t, expected, actual)
}
if !hasNestedArrayMapElement {
// Need to call Commit before calling storage.Count() for atree.PersistentSlabStorage.
err = storage.Commit()
require.NoError(t, err)
stats, err := atree.GetArrayStats(array)
require.NoError(t, err)
require.Equal(t, stats.SlabCount(), uint64(storage.Count()))
if len(expectedValues) == 0 {
// Verify slab count for empty array
require.Equal(t, uint64(1), stats.DataSlabCount)
require.Equal(t, uint64(0), stats.MetaDataSlabCount)
require.Equal(t, uint64(0), stats.StorableSlabCount)
}
}
}
func TestArrayAppendAndGet(t *testing.T) {
// With slab size 256 bytes, number of array elements equal 4096,
// element values equal 0-4095, array tree will be 3 levels,
// with 14 metadata slabs, and 109 data slabs.
atree.SetThreshold(256)
defer atree.SetThreshold(1024)
const arrayCount = uint64(4096)
typeInfo := test_utils.NewSimpleTypeInfo(42)
storage := newTestPersistentStorage(t)
address := atree.Address{1, 2, 3, 4, 5, 6, 7, 8}
array, err := atree.NewArray(storage, address, typeInfo)
require.NoError(t, err)
expectedValues := make([]atree.Value, arrayCount)
for i := range expectedValues {
v := test_utils.NewUint64ValueFromInteger(i)
expectedValues[i] = v
err := array.Append(v)
require.NoError(t, err)
}
e, err := array.Get(array.Count())
require.Nil(t, e)
require.Equal(t, 1, errorCategorizationCount(err))
var userError *atree.UserError
var indexOutOfBoundsError *atree.IndexOutOfBoundsError
require.ErrorAs(t, err, &userError)
require.ErrorAs(t, err, &indexOutOfBoundsError)
require.ErrorAs(t, userError, &indexOutOfBoundsError)
testArray(t, storage, typeInfo, address, array, expectedValues, false)
}
func TestArraySetAndGet(t *testing.T) {
t.Run("new elements with similar bytesize", func(t *testing.T) {
const arrayCount = uint64(4096)
typeInfo := test_utils.NewSimpleTypeInfo(42)
storage := newTestPersistentStorage(t)
address := atree.Address{1, 2, 3, 4, 5, 6, 7, 8}
array, err := atree.NewArray(storage, address, typeInfo)
require.NoError(t, err)
expectedValues := make([]atree.Value, arrayCount)
for i := range expectedValues {
v := test_utils.NewUint64ValueFromInteger(i)
expectedValues[i] = v
err := array.Append(v)
require.NoError(t, err)
}
testArray(t, storage, typeInfo, address, array, expectedValues, false)
for i := range expectedValues {
oldValue := expectedValues[i]
newValue := test_utils.NewUint64ValueFromInteger(i * 10)
expectedValues[i] = newValue
existingStorable, err := array.Set(uint64(i), newValue)
require.NoError(t, err)
existingValue, err := existingStorable.StoredValue(storage)
require.NoError(t, err)
testValueEqual(t, oldValue, existingValue)
}
testArray(t, storage, typeInfo, address, array, expectedValues, false)
})
// This tests slabs splitting and root slab reassignment caused by Set operation.
t.Run("new elements with larger bytesize", func(t *testing.T) {
// With slab size 256 bytes, number of array elements equal 50,
// element values equal 0-49, array tree will be 1 level,
// with 0 metadata slab, and 1 data slab (root).
// When elements are overwritten with values from math.MaxUint64-49 to math.MaxUint64,
// array tree is 2 levels, with 1 metadata slab, and 2 data slabs.
const arrayCount = uint64(50)
atree.SetThreshold(256)
defer atree.SetThreshold(1024)
typeInfo := test_utils.NewSimpleTypeInfo(42)
storage := newTestPersistentStorage(t)
address := atree.Address{1, 2, 3, 4, 5, 6, 7, 8}
array, err := atree.NewArray(storage, address, typeInfo)
require.NoError(t, err)
expectedValues := make([]atree.Value, arrayCount)
for i := range expectedValues {
v := test_utils.NewUint64ValueFromInteger(i)
expectedValues[i] = v
err := array.Append(v)
require.NoError(t, err)
}
testArray(t, storage, typeInfo, address, array, expectedValues, false)
for i := range expectedValues {
oldValue := expectedValues[i]
newValue := test_utils.Uint64Value(math.MaxUint64 - arrayCount + uint64(i) + 1)
expectedValues[i] = newValue
existingStorable, err := array.Set(uint64(i), newValue)
require.NoError(t, err)
existingValue, err := existingStorable.StoredValue(storage)
require.NoError(t, err)
testValueEqual(t, oldValue, existingValue)
}
testArray(t, storage, typeInfo, address, array, expectedValues, false)
})
// This tests slabs merging and root slab reassignment caused by Set operation.
t.Run("new elements with smaller bytesize", func(t *testing.T) {
// With slab size 256 bytes, number of array elements equal 50,
// element values equal math.MaxUint64-49 to math.MaxUint64,
// array tree is 2 levels, with 1 metadata slab, and 2 data slabs.
// When elements are overwritten with values from 0-49,
// array tree will be 1 level, with 0 metadata slab, and 1 data slab (root).
const arrayCount = uint64(50)
atree.SetThreshold(256)
defer atree.SetThreshold(1024)
typeInfo := test_utils.NewSimpleTypeInfo(42)
storage := newTestPersistentStorage(t)
address := atree.Address{1, 2, 3, 4, 5, 6, 7, 8}
array, err := atree.NewArray(storage, address, typeInfo)
require.NoError(t, err)
expectedValues := make([]atree.Value, arrayCount)
for i := range expectedValues {
v := test_utils.Uint64Value(math.MaxUint64 - arrayCount + uint64(i) + 1)
expectedValues[i] = v
err := array.Append(v)
require.NoError(t, err)
}
testArray(t, storage, typeInfo, address, array, expectedValues, false)
for i := range expectedValues {
oldValue := expectedValues[i]
newValue := test_utils.NewUint64ValueFromInteger(i)
expectedValues[i] = newValue
existingStorable, err := array.Set(uint64(i), newValue)
require.NoError(t, err)
existingValue, err := existingStorable.StoredValue(storage)
require.NoError(t, err)
testValueEqual(t, oldValue, existingValue)
}
testArray(t, storage, typeInfo, address, array, expectedValues, false)
})
t.Run("index out of bounds", func(t *testing.T) {
const arrayCount = uint64(1024)
typeInfo := test_utils.NewSimpleTypeInfo(42)
storage := newTestPersistentStorage(t)
address := atree.Address{1, 2, 3, 4, 5, 6, 7, 8}
array, err := atree.NewArray(storage, address, typeInfo)
require.NoError(t, err)
expectedValues := make([]atree.Value, arrayCount)
for i := range expectedValues {
v := test_utils.NewUint64ValueFromInteger(i)
expectedValues[i] = v
err := array.Append(v)
require.NoError(t, err)
}
r := newRand(t)
v := test_utils.NewStringValue(randStr(r, 1024))
storable, err := array.Set(array.Count(), v)
require.Nil(t, storable)
require.Equal(t, 1, errorCategorizationCount(err))
var userError *atree.UserError
var indexOutOfBoundsError *atree.IndexOutOfBoundsError
require.ErrorAs(t, err, &userError)
require.ErrorAs(t, err, &indexOutOfBoundsError)
require.ErrorAs(t, userError, &indexOutOfBoundsError)
testArray(t, storage, typeInfo, address, array, expectedValues, false)
})
}
func TestArrayInsertAndGet(t *testing.T) {
atree.SetThreshold(256)
defer atree.SetThreshold(1024)
t.Run("insert-first", func(t *testing.T) {
const arrayCount = uint64(4096)
typeInfo := test_utils.NewSimpleTypeInfo(42)
storage := newTestPersistentStorage(t)
address := atree.Address{1, 2, 3, 4, 5, 6, 7, 8}
array, err := atree.NewArray(storage, address, typeInfo)
require.NoError(t, err)
expectedValues := make([]atree.Value, arrayCount)
for i := len(expectedValues) - 1; i >= 0; i-- {
v := test_utils.NewUint64ValueFromInteger(i)
expectedValues[i] = v
err := array.Insert(0, v)
require.NoError(t, err)
}
testArray(t, storage, typeInfo, address, array, expectedValues, false)
})
t.Run("insert-last", func(t *testing.T) {
const arrayCount = uint64(4096)
typeInfo := test_utils.NewSimpleTypeInfo(42)
storage := newTestPersistentStorage(t)
address := atree.Address{1, 2, 3, 4, 5, 6, 7, 8}
array, err := atree.NewArray(storage, address, typeInfo)
require.NoError(t, err)
expectedValues := make([]atree.Value, arrayCount)
for i := range expectedValues {
v := test_utils.NewUint64ValueFromInteger(i)
expectedValues[i] = v
err := array.Insert(array.Count(), v)
require.NoError(t, err)
}
testArray(t, storage, typeInfo, address, array, expectedValues, false)
})
t.Run("insert", func(t *testing.T) {
const arrayCount = uint64(4096)
typeInfo := test_utils.NewSimpleTypeInfo(42)
storage := newTestPersistentStorage(t)
address := atree.Address{1, 2, 3, 4, 5, 6, 7, 8}
array, err := atree.NewArray(storage, address, typeInfo)
require.NoError(t, err)
expectedValues := make([]atree.Value, 0, arrayCount)
for i := uint64(0); i < arrayCount; i += 2 {
v := test_utils.Uint64Value(i)
expectedValues = append(expectedValues, v)
err := array.Append(v)
require.NoError(t, err)
}
for i := uint64(1); i < arrayCount; i += 2 {
v := test_utils.Uint64Value(i)
expectedValues = append(expectedValues, nil)
copy(expectedValues[i+1:], expectedValues[i:])
expectedValues[i] = v
err := array.Insert(i, v)
require.NoError(t, err)
}
testArray(t, storage, typeInfo, address, array, expectedValues, false)
})
t.Run("index out of bounds", func(t *testing.T) {
const arrayCount = uint64(1024)
typeInfo := test_utils.NewSimpleTypeInfo(42)
storage := newTestPersistentStorage(t)
address := atree.Address{1, 2, 3, 4, 5, 6, 7, 8}
array, err := atree.NewArray(storage, address, typeInfo)
require.NoError(t, err)
expectedValues := make([]atree.Value, arrayCount)
for i := range expectedValues {
v := test_utils.NewUint64ValueFromInteger(i)
expectedValues[i] = v
err := array.Append(v)
require.NoError(t, err)
}
r := newRand(t)
v := test_utils.NewStringValue(randStr(r, 1024))
err = array.Insert(array.Count()+1, v)
require.Equal(t, 1, errorCategorizationCount(err))
var userError *atree.UserError
var indexOutOfBoundsError *atree.IndexOutOfBoundsError
require.ErrorAs(t, err, &userError)
require.ErrorAs(t, err, &indexOutOfBoundsError)
require.ErrorAs(t, userError, &indexOutOfBoundsError)
testArray(t, storage, typeInfo, address, array, expectedValues, false)
})
}
func TestArrayRemove(t *testing.T) {
atree.SetThreshold(256)
defer atree.SetThreshold(1024)
t.Run("remove-first", func(t *testing.T) {
const arrayCount = uint64(4096)
typeInfo := test_utils.NewSimpleTypeInfo(42)
storage := newTestPersistentStorage(t)
address := atree.Address{1, 2, 3, 4, 5, 6, 7, 8}
array, err := atree.NewArray(storage, address, typeInfo)
require.NoError(t, err)
expectedValues := make([]atree.Value, arrayCount)
for i := range expectedValues {
v := test_utils.NewUint64ValueFromInteger(i)
expectedValues[i] = v
err := array.Append(v)
require.NoError(t, err)
}
require.True(t, test_utils.CompareTypeInfo(typeInfo, array.Type()))
require.Equal(t, address, array.Address())
require.Equal(t, arrayCount, array.Count())
remainingArrayCount := uint64(len(expectedValues))
for i := range expectedValues {
existingStorable, err := array.Remove(0)
require.NoError(t, err)
existingValue, err := existingStorable.StoredValue(array.Storage)
require.NoError(t, err)
testValueEqual(t, expectedValues[i], existingValue)
if id, ok := existingStorable.(atree.SlabIDStorable); ok {
err = array.Storage.Remove(atree.SlabID(id))
require.NoError(t, err)
}
remainingArrayCount--
require.Equal(t, remainingArrayCount, array.Count())
if i%256 == 0 {
testArray(t, storage, typeInfo, address, array, expectedValues[i+1:], false)
}
}
testEmptyArray(t, storage, typeInfo, address, array)
})
t.Run("remove-last", func(t *testing.T) {
const arrayCount = uint64(4096)
typeInfo := test_utils.NewSimpleTypeInfo(42)
storage := newTestPersistentStorage(t)
address := atree.Address{1, 2, 3, 4, 5, 6, 7, 8}
array, err := atree.NewArray(storage, address, typeInfo)
require.NoError(t, err)
expectedValues := make([]atree.Value, arrayCount)
for i := range expectedValues {
v := test_utils.NewUint64ValueFromInteger(i)
expectedValues[i] = v
err := array.Append(v)
require.NoError(t, err)
}
require.True(t, test_utils.CompareTypeInfo(typeInfo, array.Type()))
require.Equal(t, address, array.Address())
require.Equal(t, arrayCount, array.Count())
for i := len(expectedValues) - 1; i >= 0; i-- {
existingStorable, err := array.Remove(uint64(i))
require.NoError(t, err)
existingValue, err := existingStorable.StoredValue(array.Storage)
require.NoError(t, err)
testValueEqual(t, expectedValues[i], existingValue)
if id, ok := existingStorable.(atree.SlabIDStorable); ok {
err = array.Storage.Remove(atree.SlabID(id))
require.NoError(t, err)
}
require.Equal(t, uint64(i), array.Count())
if i%256 == 0 {
testArray(t, storage, typeInfo, address, array, expectedValues[:i], false)
}
}
testEmptyArray(t, storage, typeInfo, address, array)
})
t.Run("remove", func(t *testing.T) {
const arrayCount = uint64(4096)
typeInfo := test_utils.NewSimpleTypeInfo(42)
storage := newTestPersistentStorage(t)
address := atree.Address{1, 2, 3, 4, 5, 6, 7, 8}
array, err := atree.NewArray(storage, address, typeInfo)
require.NoError(t, err)
expectedValues := make([]atree.Value, arrayCount)
for i := range expectedValues {
v := test_utils.NewUint64ValueFromInteger(i)
expectedValues[i] = v
err := array.Append(v)
require.NoError(t, err)
}
require.True(t, test_utils.CompareTypeInfo(typeInfo, array.Type()))
require.Equal(t, address, array.Address())
require.Equal(t, arrayCount, array.Count())
// Remove every other elements
for i := range arrayCount / 2 {
v := expectedValues[i]
existingStorable, err := array.Remove(i)
require.NoError(t, err)
existingValue, err := existingStorable.StoredValue(array.Storage)
require.NoError(t, err)
testValueEqual(t, v, existingValue)
if id, ok := existingStorable.(atree.SlabIDStorable); ok {
err = array.Storage.Remove(atree.SlabID(id))
require.NoError(t, err)
}
copy(expectedValues[i:], expectedValues[i+1:])
expectedValues = expectedValues[:len(expectedValues)-1]
require.Equal(t, uint64(len(expectedValues)), array.Count())
if i%256 == 0 {
testArray(t, storage, typeInfo, address, array, expectedValues, false)
}
}
require.Equal(t, arrayCount/2, uint64(len(expectedValues)))
testArray(t, storage, typeInfo, address, array, expectedValues, false)
})
t.Run("index out of bounds", func(t *testing.T) {
const arrayCount = uint64(4096)
typeInfo := test_utils.NewSimpleTypeInfo(42)
storage := newTestPersistentStorage(t)
address := atree.Address{1, 2, 3, 4, 5, 6, 7, 8}
array, err := atree.NewArray(storage, address, typeInfo)
require.NoError(t, err)
expectedValues := make([]atree.Value, arrayCount)
for i := range expectedValues {
v := test_utils.NewUint64ValueFromInteger(i)
expectedValues[i] = v
err := array.Append(v)
require.NoError(t, err)
}
storable, err := array.Remove(array.Count())
require.Nil(t, storable)
require.Equal(t, 1, errorCategorizationCount(err))
var userError *atree.UserError
var indexOutOfBounds *atree.IndexOutOfBoundsError
require.ErrorAs(t, err, &userError)
require.ErrorAs(t, err, &indexOutOfBounds)
require.ErrorAs(t, userError, &indexOutOfBounds)
testArray(t, storage, typeInfo, address, array, expectedValues, false)
})
}
func TestReadOnlyArrayIterate(t *testing.T) {
t.Run("empty", func(t *testing.T) {
typeInfo := test_utils.NewSimpleTypeInfo(42)
storage := newTestPersistentStorage(t)
address := atree.Address{1, 2, 3, 4, 5, 6, 7, 8}
array, err := atree.NewArray(storage, address, typeInfo)
require.NoError(t, err)
i := uint64(0)
err = array.IterateReadOnly(func(atree.Value) (bool, error) {
i++
return true, nil
})
require.NoError(t, err)
require.Equal(t, uint64(0), i)
})
t.Run("append", func(t *testing.T) {
atree.SetThreshold(256)
defer atree.SetThreshold(1024)
const arrayCount = uint64(4096)
typeInfo := test_utils.NewSimpleTypeInfo(42)
storage := newTestPersistentStorage(t)
address := atree.Address{1, 2, 3, 4, 5, 6, 7, 8}
array, err := atree.NewArray(storage, address, typeInfo)
require.NoError(t, err)
for i := range arrayCount {
err := array.Append(test_utils.Uint64Value(i))
require.NoError(t, err)
}
i := uint64(0)
err = array.IterateReadOnly(func(v atree.Value) (bool, error) {
require.Equal(t, test_utils.Uint64Value(i), v)
i++
return true, nil
})
require.NoError(t, err)
require.Equal(t, arrayCount, i)
})
t.Run("set", func(t *testing.T) {
atree.SetThreshold(256)
defer atree.SetThreshold(1024)
const arrayCount = uint64(4096)
typeInfo := test_utils.NewSimpleTypeInfo(42)
storage := newTestPersistentStorage(t)
address := atree.Address{1, 2, 3, 4, 5, 6, 7, 8}
array, err := atree.NewArray(storage, address, typeInfo)
require.NoError(t, err)
for range arrayCount {
err := array.Append(test_utils.Uint64Value(0))
require.NoError(t, err)
}
for i := range arrayCount {
existingStorable, err := array.Set(i, test_utils.Uint64Value(i))
require.NoError(t, err)
existingValue, err := existingStorable.StoredValue(storage)
require.NoError(t, err)
require.Equal(t, test_utils.Uint64Value(0), existingValue)
}
i := uint64(0)
err = array.IterateReadOnly(func(v atree.Value) (bool, error) {
require.Equal(t, test_utils.Uint64Value(i), v)
i++
return true, nil
})
require.NoError(t, err)
require.Equal(t, arrayCount, i)
})
t.Run("insert", func(t *testing.T) {
atree.SetThreshold(256)
defer atree.SetThreshold(1024)
const arrayCount = uint64(4096)
typeInfo := test_utils.NewSimpleTypeInfo(42)
storage := newTestPersistentStorage(t)
address := atree.Address{1, 2, 3, 4, 5, 6, 7, 8}
array, err := atree.NewArray(storage, address, typeInfo)
require.NoError(t, err)
for i := uint64(0); i < arrayCount; i += 2 {
err := array.Append(test_utils.Uint64Value(i))
require.NoError(t, err)
}
for i := uint64(1); i < arrayCount; i += 2 {
err := array.Insert(i, test_utils.Uint64Value(i))
require.NoError(t, err)
}
i := uint64(0)
err = array.IterateReadOnly(func(v atree.Value) (bool, error) {
require.Equal(t, test_utils.Uint64Value(i), v)
i++
return true, nil
})
require.NoError(t, err)
require.Equal(t, arrayCount, i)
})
t.Run("remove", func(t *testing.T) {
atree.SetThreshold(256)
defer atree.SetThreshold(1024)
const arrayCount = uint64(4096)
typeInfo := test_utils.NewSimpleTypeInfo(42)
storage := newTestPersistentStorage(t)
address := atree.Address{1, 2, 3, 4, 5, 6, 7, 8}
array, err := atree.NewArray(storage, address, typeInfo)
require.NoError(t, err)
for i := range arrayCount {
err := array.Append(test_utils.Uint64Value(i))
require.NoError(t, err)
}
// Remove every other elements
for i := uint64(0); i < array.Count(); i++ {
storable, err := array.Remove(i)
require.NoError(t, err)
require.Equal(t, test_utils.Uint64Value(i*2), storable)
}
i := uint64(0)
j := uint64(1)
err = array.IterateReadOnly(func(v atree.Value) (bool, error) {
require.Equal(t, test_utils.Uint64Value(j), v)
i++
j += 2
return true, nil
})
require.NoError(t, err)
require.Equal(t, arrayCount/2, i)
})
t.Run("stop", func(t *testing.T) {
typeInfo := test_utils.NewSimpleTypeInfo(42)
storage := newTestPersistentStorage(t)
address := atree.Address{1, 2, 3, 4, 5, 6, 7, 8}
array, err := atree.NewArray(storage, address, typeInfo)
require.NoError(t, err)
const arrayCount = uint64(10)
for i := range arrayCount {
err := array.Append(test_utils.Uint64Value(i))
require.NoError(t, err)
}
i := uint64(0)
err = array.IterateReadOnly(func(_ atree.Value) (bool, error) {
if i == arrayCount/2 {
return false, nil
}
i++
return true, nil
})
require.NoError(t, err)
require.Equal(t, arrayCount/2, i)
})
t.Run("error", func(t *testing.T) {
typeInfo := test_utils.NewSimpleTypeInfo(42)
storage := newTestPersistentStorage(t)
address := atree.Address{1, 2, 3, 4, 5, 6, 7, 8}
array, err := atree.NewArray(storage, address, typeInfo)
require.NoError(t, err)
const arrayCount = uint64(10)
for i := range arrayCount {
err := array.Append(test_utils.Uint64Value(i))
require.NoError(t, err)
}
testErr := errors.New("test")
i := uint64(0)
err = array.IterateReadOnly(func(_ atree.Value) (bool, error) {
if i == arrayCount/2 {
return false, testErr
}
i++
return true, nil
})
// err is testErr wrapped in atree.ExternalError.
require.Equal(t, 1, errorCategorizationCount(err))
var externalError *atree.ExternalError
require.ErrorAs(t, err, &externalError)
require.Equal(t, testErr, externalError.Unwrap())
require.Equal(t, arrayCount/2, i)
})
}
func TestMutateElementFromReadOnlyArrayIterator(t *testing.T) {
atree.SetThreshold(256)
defer atree.SetThreshold(1024)
typeInfo := test_utils.NewSimpleTypeInfo(42)
address := atree.Address{1, 2, 3, 4, 5, 6, 7, 8}
storage := newTestPersistentStorage(t)
var mutationError *atree.ReadOnlyIteratorElementMutationError
t.Run("mutate inlined element from IterateReadOnly", func(t *testing.T) {
parentArray, err := atree.NewArray(storage, address, typeInfo)
require.NoError(t, err)
// child array []
childArray, err := atree.NewArray(storage, address, typeInfo)
require.NoError(t, err)
require.False(t, childArray.Inlined())
// parent array [[]]
err = parentArray.Append(childArray)
require.NoError(t, err)
require.True(t, childArray.Inlined())
// Iterate and modify element
var valueMutationCallbackCalled bool
err = parentArray.IterateReadOnlyWithMutationCallback(
func(v atree.Value) (resume bool, err error) {
c, ok := v.(*atree.Array)
require.True(t, ok)
require.True(t, c.Inlined())
err = c.Append(test_utils.Uint64Value(0))
require.ErrorAs(t, err, &mutationError)
return true, err
},
func(atree.Value) {
valueMutationCallbackCalled = true
})
require.ErrorAs(t, err, &mutationError)
require.True(t, valueMutationCallbackCalled)
})
t.Run("mutate inlined element from IterateReadOnlyRange", func(t *testing.T) {
parentArray, err := atree.NewArray(storage, address, typeInfo)
require.NoError(t, err)
// child array []
childArray, err := atree.NewArray(storage, address, typeInfo)
require.NoError(t, err)
require.False(t, childArray.Inlined())
// parent array [[]]
err = parentArray.Append(childArray)
require.NoError(t, err)
require.True(t, childArray.Inlined())
// Iterate and modify element
var valueMutationCallbackCalled bool
err = parentArray.IterateReadOnlyRangeWithMutationCallback(
0,
parentArray.Count(),
func(v atree.Value) (resume bool, err error) {
c, ok := v.(*atree.Array)
require.True(t, ok)
require.True(t, c.Inlined())
err = c.Append(test_utils.Uint64Value(0))
require.ErrorAs(t, err, &mutationError)
return true, err
},
func(atree.Value) {
valueMutationCallbackCalled = true
})
require.ErrorAs(t, err, &mutationError)
require.True(t, valueMutationCallbackCalled)