66 lines
2.9 KiB
Go
66 lines
2.9 KiB
Go
package storage_test
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import (
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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"
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)
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var _ = Describe("Mappings", func() {
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Describe("GetMapping", func() {
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It("returns the storage key for a mapping when passed the mapping's index on the contract and the desired value's key", func() {
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// ex. solidity:
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// mapping (bytes32 => uint) public amounts
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// to access amounts, pass in the index of the mapping on the contract + the bytes32 key for the uint val being looked up
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indexOfMappingOnContract := storage.IndexZero
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keyForDesiredValueInMapping := "1234567890abcdef"
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storageKey := storage.GetMapping(indexOfMappingOnContract, keyForDesiredValueInMapping)
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expectedStorageKey := common.HexToHash("0xee0c1b59a3856bafbfb8730e7694c4badc271eb5f01ce4a8d7a53d8a6499676f")
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Expect(storageKey).To(Equal(expectedStorageKey))
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})
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})
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Describe("GetNestedMapping", func() {
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It("returns the storage key for a nested mapping when passed the mapping's index on the contract and the desired value's keys", func() {
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// ex. solidity:
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// mapping (bytes32 => uint) public amounts
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// mapping (address => mapping (uint => bytes32)) public addressNames
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// to access addressNames, pass in the index of the mapping on the contract + the address and uint keys for the bytes32 val being looked up
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indexOfMappingOnContract := storage.IndexOne
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keyForOuterMapping := "1234567890abcdef"
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keyForInnerMapping := "123"
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storageKey := storage.GetNestedMapping(indexOfMappingOnContract, keyForOuterMapping, keyForInnerMapping)
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expectedStorageKey := common.HexToHash("0x82113529f6cd61061d1a6f0de53f2bdd067a1addd3d2b46be50a99abfcdb1661")
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Expect(storageKey).To(Equal(expectedStorageKey))
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})
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})
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Describe("GetIncrementedKey", func() {
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It("returns the storage key for later values sharing an index on the contract with other earlier values", func() {
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// ex. solidity:
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// mapping (bytes32 => uint) public amounts
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// mapping (address => mapping (uint => bytes32)) public addressNames
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// struct Data {
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// uint256 quantity;
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// uint256 quality;
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// }
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// mapping (bytes32 => Data) public itemData;
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// to access quality from itemData, pass in the storage key for the zero-indexed value (quantity) + the number of increments required.
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// (For "quality", we must increment the storage key for the corresponding "quantity" by 1).
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indexOfMappingOnContract := storage.IndexTwo
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keyForDesiredValueInMapping := "1234567890abcdef"
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storageKeyForFirstPropertyOnStruct := storage.GetMapping(indexOfMappingOnContract, keyForDesiredValueInMapping)
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storageKey := storage.GetIncrementedKey(storageKeyForFirstPropertyOnStruct, 1)
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expectedStorageKey := common.HexToHash("0x69b38749f0a8ed5d505c8474f7fb62c7828aad8a7627f1c67e07af1d2368cad4")
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Expect(storageKey).To(Equal(expectedStorageKey))
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})
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})
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})
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