151 lines
5.7 KiB
Go
151 lines
5.7 KiB
Go
// VulcanizeDB
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// Copyright © 2019 Vulcanize
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Affero General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Affero General Public License for more details.
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// You should have received a copy of the GNU Affero General Public License
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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package utils_test
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import (
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"math/big"
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"github.com/ethereum/go-ethereum/common"
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. "github.com/onsi/ginkgo"
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. "github.com/onsi/gomega"
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"github.com/vulcanize/vulcanizedb/libraries/shared/storage/utils"
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)
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var _ = Describe("Storage decoder", func() {
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It("decodes uint256", func() {
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fakeInt := common.HexToHash("0000000000000000000000000000000000000000000000000000000000000539")
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row := utils.StorageDiffRow{StorageValue: fakeInt}
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metadata := utils.StorageValueMetadata{Type: utils.Uint256}
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result, err := utils.Decode(row, metadata)
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Expect(err).NotTo(HaveOccurred())
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Expect(result).To(Equal(big.NewInt(0).SetBytes(fakeInt.Bytes()).String()))
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})
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It("decodes uint128", func() {
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fakeInt := common.HexToHash("0000000000000000000000000000000000000000000000000000000000011123")
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row := utils.StorageDiffRow{StorageValue: fakeInt}
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metadata := utils.StorageValueMetadata{Type: utils.Uint128}
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result, err := utils.Decode(row, metadata)
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Expect(err).NotTo(HaveOccurred())
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Expect(result).To(Equal(big.NewInt(0).SetBytes(fakeInt.Bytes()).String()))
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})
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It("decodes uint48", func() {
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fakeInt := common.HexToHash("0000000000000000000000000000000000000000000000000000000000000123")
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row := utils.StorageDiffRow{StorageValue: fakeInt}
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metadata := utils.StorageValueMetadata{Type: utils.Uint48}
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result, err := utils.Decode(row, metadata)
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Expect(err).NotTo(HaveOccurred())
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Expect(result).To(Equal(big.NewInt(0).SetBytes(fakeInt.Bytes()).String()))
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})
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It("decodes address", func() {
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fakeAddress := common.HexToAddress("0x12345")
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row := utils.StorageDiffRow{StorageValue: fakeAddress.Hash()}
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metadata := utils.StorageValueMetadata{Type: utils.Address}
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result, err := utils.Decode(row, metadata)
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Expect(err).NotTo(HaveOccurred())
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Expect(result).To(Equal(fakeAddress.Hex()))
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})
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Describe("when there are multiple items packed in the storage slot", func() {
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It("decodes uint48 items", func() {
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//this is a real storage data example
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packedStorage := common.HexToHash("000000000000000000000000000000000000000000000002a300000000002a30")
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row := utils.StorageDiffRow{StorageValue: packedStorage}
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packedTypes := map[int]utils.ValueType{}
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packedTypes[0] = utils.Uint48
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packedTypes[1] = utils.Uint48
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metadata := utils.StorageValueMetadata{
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Type: utils.PackedSlot,
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PackedTypes: packedTypes,
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}
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result, err := utils.Decode(row, metadata)
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decodedValues := result.(map[int]string)
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Expect(err).NotTo(HaveOccurred())
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Expect(decodedValues[0]).To(Equal(big.NewInt(0).SetBytes(common.HexToHash("2a30").Bytes()).String()))
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Expect(decodedValues[1]).To(Equal(big.NewInt(0).SetBytes(common.HexToHash("2a300").Bytes()).String()))
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})
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It("decodes 5 uint48 items", func() {
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//TODO: this packedStorageHex was generated by hand, it would be nice to test this against
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//real storage data that has several items packed into it
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packedStorageHex := "0000000A5D1AFFFFFFFFFFFE00000009F3C600000002A300000000002A30"
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packedStorage := common.HexToHash(packedStorageHex)
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row := utils.StorageDiffRow{StorageValue: packedStorage}
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packedTypes := map[int]utils.ValueType{}
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packedTypes[0] = utils.Uint48
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packedTypes[1] = utils.Uint48
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packedTypes[2] = utils.Uint48
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packedTypes[3] = utils.Uint48
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packedTypes[4] = utils.Uint48
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metadata := utils.StorageValueMetadata{
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Type: utils.PackedSlot,
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PackedTypes: packedTypes,
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}
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result, err := utils.Decode(row, metadata)
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decodedValues := result.(map[int]string)
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Expect(err).NotTo(HaveOccurred())
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Expect(decodedValues[0]).To(Equal(big.NewInt(0).SetBytes(common.HexToHash("2a30").Bytes()).String()))
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Expect(decodedValues[1]).To(Equal(big.NewInt(0).SetBytes(common.HexToHash("2a300").Bytes()).String()))
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Expect(decodedValues[2]).To(Equal(big.NewInt(0).SetBytes(common.HexToHash("9F3C6").Bytes()).String()))
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Expect(decodedValues[3]).To(Equal(big.NewInt(0).SetBytes(common.HexToHash("FFFFFFFFFFFE").Bytes()).String()))
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Expect(decodedValues[4]).To(Equal(big.NewInt(0).SetBytes(common.HexToHash("A5D1A").Bytes()).String()))
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})
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It("decodes 2 uint128 items", func() {
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//TODO: this packedStorageHex was generated by hand, it would be nice to test this against
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//real storage data that has several items packed into it
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packedStorageHex := "000000038D7EA4C67FF8E502B6730000" +
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"0000000000000000AB54A98CEB1F0AD2"
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packedStorage := common.HexToHash(packedStorageHex)
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row := utils.StorageDiffRow{StorageValue: packedStorage}
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packedTypes := map[int]utils.ValueType{}
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packedTypes[0] = utils.Uint128
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packedTypes[1] = utils.Uint128
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metadata := utils.StorageValueMetadata{
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Type: utils.PackedSlot,
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PackedTypes: packedTypes,
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}
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result, err := utils.Decode(row, metadata)
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decodedValues := result.(map[int]string)
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Expect(err).NotTo(HaveOccurred())
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Expect(decodedValues[0]).To(Equal(big.NewInt(0).SetBytes(common.HexToHash("AB54A98CEB1F0AD2").Bytes()).String()))
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Expect(decodedValues[1]).To(Equal(big.NewInt(0).SetBytes(common.HexToHash("38D7EA4C67FF8E502B6730000").Bytes()).String()))
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})
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})
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})
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