ipfs-ethdb/database_test.go

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// VulcanizeDB
// Copyright © 2019 Vulcanize
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
package ipfsethdb_test
import (
"math/big"
"github.com/ethereum/go-ethereum/core/types"
"github.com/ethereum/go-ethereum/ethdb"
"github.com/ethereum/go-ethereum/rlp"
"github.com/ipfs/go-blockservice"
. "github.com/onsi/ginkgo"
. "github.com/onsi/gomega"
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ipfsethdb "github.com/cerc-io/ipfs-ethdb/v4"
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)
var (
database ethdb.Database
blockService blockservice.BlockService
err error
testHeader = types.Header{Number: big.NewInt(1337)}
testValue, _ = rlp.EncodeToBytes(testHeader)
testEthKey = testHeader.Hash().Bytes()
)
var _ = Describe("Database", func() {
BeforeEach(func() {
blockService = ipfsethdb.NewMockBlockservice()
database = ipfsethdb.NewDatabase(blockService)
})
Describe("Has", func() {
It("returns false if a key-pair doesn't exist in the db", func() {
has, err := database.Has(testEthKey)
Expect(err).ToNot(HaveOccurred())
Expect(has).ToNot(BeTrue())
})
It("returns true if a key-pair exists in the db", func() {
err := database.Put(testEthKey, testValue)
Expect(err).ToNot(HaveOccurred())
has, err := database.Has(testEthKey)
Expect(err).ToNot(HaveOccurred())
Expect(has).To(BeTrue())
})
})
Describe("Get", func() {
It("throws an err if the key-pair doesn't exist in the db", func() {
_, err = database.Get(testEthKey)
Expect(err).To(HaveOccurred())
Expect(err.Error()).To(ContainSubstring("block not found"))
})
It("returns the value associated with the key, if the pair exists", func() {
err := database.Put(testEthKey, testValue)
Expect(err).ToNot(HaveOccurred())
val, err := database.Get(testEthKey)
Expect(err).ToNot(HaveOccurred())
Expect(val).To(Equal(testValue))
})
})
Describe("Put", func() {
It("persists the key-value pair in the database", func() {
_, err = database.Get(testEthKey)
Expect(err).To(HaveOccurred())
Expect(err.Error()).To(ContainSubstring("block not found"))
err = database.Put(testEthKey, testValue)
Expect(err).ToNot(HaveOccurred())
val, err := database.Get(testEthKey)
Expect(err).ToNot(HaveOccurred())
Expect(val).To(Equal(testValue))
})
})
Describe("Delete", func() {
It("removes the key-value pair from the database", func() {
err = database.Put(testEthKey, testValue)
Expect(err).ToNot(HaveOccurred())
val, err := database.Get(testEthKey)
Expect(err).ToNot(HaveOccurred())
Expect(val).To(Equal(testValue))
err = database.Delete(testEthKey)
Expect(err).ToNot(HaveOccurred())
_, err = database.Get(testEthKey)
Expect(err).To(HaveOccurred())
Expect(err.Error()).To(ContainSubstring("block not found"))
})
})
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})