ipfs-ethdb/postgres/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 pgipfsethdb_test
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import (
"math/big"
"time"
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"github.com/ethereum/go-ethereum/core/types"
"github.com/ethereum/go-ethereum/ethdb"
"github.com/ethereum/go-ethereum/rlp"
"github.com/jmoiron/sqlx"
"github.com/mailgun/groupcache/v2"
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. "github.com/onsi/ginkgo"
. "github.com/onsi/gomega"
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pgipfsethdb "github.com/cerc-io/ipfs-ethdb/v4/postgres"
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)
var (
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database ethdb.Database
db *sqlx.DB
err error
testBlockNumber = big.NewInt(1337)
testHeader = types.Header{Number: testBlockNumber}
testValue, _ = rlp.EncodeToBytes(testHeader)
testEthKey = testHeader.Hash().Bytes()
testMhKey, _ = pgipfsethdb.MultihashKeyFromKeccak256(testEthKey)
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)
var _ = Describe("Database", func() {
BeforeEach(func() {
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db, err = pgipfsethdb.TestDB()
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Expect(err).ToNot(HaveOccurred())
cacheConfig := pgipfsethdb.CacheConfig{
Name: "db",
Size: 3000000, // 3MB
ExpiryDuration: time.Hour,
}
database = pgipfsethdb.NewDatabase(db, cacheConfig)
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databaseWithBlock, ok := database.(*pgipfsethdb.Database)
Expect(ok).To(BeTrue())
(*databaseWithBlock).BlockNumber = testBlockNumber
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})
AfterEach(func() {
groupcache.DeregisterGroup("db")
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err = pgipfsethdb.ResetTestDB(db)
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Expect(err).ToNot(HaveOccurred())
})
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() {
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_, err = db.Exec("INSERT into public.blocks (key, data, block_number) VALUES ($1, $2, $3)", testMhKey, testValue, testBlockNumber.Uint64())
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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("sql: no rows in result set"))
})
It("returns the value associated with the key, if the pair exists", func() {
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_, err = db.Exec("INSERT into public.blocks (key, data, block_number) VALUES ($1, $2, $3)", testMhKey, testValue, testBlockNumber.Uint64())
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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("sql: no rows in result set"))
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("sql: no rows in result set"))
})
})
})