forked from cerc-io/ipld-eth-server
b8fec5e4e3
- Extract shared namespace for looking up and hashing keys - Require storage transformers only to implement a loader that associates known keys with metadata - Move key loader/lookup utils to utils directory to avoid multiple "storage" packages in imports
114 lines
3.7 KiB
Go
114 lines
3.7 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 storage_test
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import (
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"github.com/ethereum/go-ethereum/common"
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"github.com/ethereum/go-ethereum/crypto"
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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/factories/storage"
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"github.com/vulcanize/vulcanizedb/libraries/shared/mocks"
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"github.com/vulcanize/vulcanizedb/libraries/shared/storage/utils"
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"github.com/vulcanize/vulcanizedb/pkg/fakes"
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"github.com/vulcanize/vulcanizedb/test_config"
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)
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var _ = Describe("Storage keys lookup", func() {
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var (
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fakeMetadata = utils.GetStorageValueMetadata("name", map[utils.Key]string{}, utils.Uint256)
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lookup storage.KeysLookup
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loader *mocks.MockStorageKeysLoader
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)
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BeforeEach(func() {
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loader = &mocks.MockStorageKeysLoader{}
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lookup = storage.NewKeysLookup(loader)
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})
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Describe("Lookup", func() {
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Describe("when key not found", func() {
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It("refreshes keys", func() {
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loader.StorageKeyMappings = map[common.Hash]utils.StorageValueMetadata{fakes.FakeHash: fakeMetadata}
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_, err := lookup.Lookup(fakes.FakeHash)
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Expect(err).NotTo(HaveOccurred())
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Expect(loader.LoadMappingsCallCount).To(Equal(1))
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})
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It("returns error if refreshing keys fails", func() {
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loader.LoadMappingsError = fakes.FakeError
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_, err := lookup.Lookup(fakes.FakeHash)
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Expect(err).To(HaveOccurred())
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Expect(err).To(MatchError(fakes.FakeError))
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})
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})
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Describe("when key found", func() {
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BeforeEach(func() {
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loader.StorageKeyMappings = map[common.Hash]utils.StorageValueMetadata{fakes.FakeHash: fakeMetadata}
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_, err := lookup.Lookup(fakes.FakeHash)
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Expect(err).NotTo(HaveOccurred())
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Expect(loader.LoadMappingsCallCount).To(Equal(1))
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})
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It("does not refresh keys", func() {
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_, err := lookup.Lookup(fakes.FakeHash)
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Expect(err).NotTo(HaveOccurred())
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Expect(loader.LoadMappingsCallCount).To(Equal(1))
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})
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})
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It("returns metadata for loaded static key", func() {
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loader.StorageKeyMappings = map[common.Hash]utils.StorageValueMetadata{fakes.FakeHash: fakeMetadata}
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metadata, err := lookup.Lookup(fakes.FakeHash)
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Expect(err).NotTo(HaveOccurred())
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Expect(metadata).To(Equal(fakeMetadata))
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})
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It("returns metadata for hashed version of key (accommodates keys emitted from Geth)", func() {
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loader.StorageKeyMappings = map[common.Hash]utils.StorageValueMetadata{fakes.FakeHash: fakeMetadata}
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hashedKey := common.BytesToHash(crypto.Keccak256(fakes.FakeHash.Bytes()))
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metadata, err := lookup.Lookup(hashedKey)
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Expect(err).NotTo(HaveOccurred())
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Expect(metadata).To(Equal(fakeMetadata))
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})
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It("returns key not found error if key not found", func() {
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_, err := lookup.Lookup(fakes.FakeHash)
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Expect(err).To(HaveOccurred())
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Expect(err).To(MatchError(utils.ErrStorageKeyNotFound{Key: fakes.FakeHash.Hex()}))
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})
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})
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Describe("SetDB", func() {
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It("sets the db on the loader", func() {
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lookup.SetDB(test_config.NewTestDB(test_config.NewTestNode()))
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Expect(loader.SetDBCalled).To(BeTrue())
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})
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})
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})
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