104 lines
3.2 KiB
Go
104 lines
3.2 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 postgres_test
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import (
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"fmt"
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"strings"
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"math/big"
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"github.com/jmoiron/sqlx"
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_ "github.com/lib/pq"
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. "github.com/onsi/ginkgo"
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. "github.com/onsi/gomega"
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"github.com/vulcanize/vulcanizedb/pkg/config"
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"github.com/vulcanize/vulcanizedb/pkg/eth/core"
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"github.com/vulcanize/vulcanizedb/pkg/postgres"
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"github.com/vulcanize/vulcanizedb/test_config"
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)
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var _ = Describe("Postgres DB", func() {
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var sqlxdb *sqlx.DB
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It("connects to the database", func() {
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var err error
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pgConfig := config.DbConnectionString(test_config.DBConfig)
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sqlxdb, err = sqlx.Connect("postgres", pgConfig)
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Expect(err).Should(BeNil())
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Expect(sqlxdb).ShouldNot(BeNil())
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})
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It("serializes big.Int to db", func() {
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// postgres driver doesn't support go big.Int type
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// various casts in golang uint64, int64, overflow for
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// transaction value (in wei) even though
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// postgres numeric can handle an arbitrary
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// sized int, so use string representation of big.Int
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// and cast on insert
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pgConnectString := config.DbConnectionString(test_config.DBConfig)
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db, err := sqlx.Connect("postgres", pgConnectString)
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Expect(err).NotTo(HaveOccurred())
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bi := new(big.Int)
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bi.SetString("34940183920000000000", 10)
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Expect(bi.String()).To(Equal("34940183920000000000"))
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defer db.Exec(`DROP TABLE IF EXISTS example`)
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_, err = db.Exec("CREATE TABLE example ( id INTEGER, data NUMERIC )")
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Expect(err).ToNot(HaveOccurred())
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sqlStatement := `
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INSERT INTO example (id, data)
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VALUES (1, cast($1 AS NUMERIC))`
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_, err = db.Exec(sqlStatement, bi.String())
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Expect(err).ToNot(HaveOccurred())
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var data string
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err = db.QueryRow(`SELECT data FROM example WHERE id = 1`).Scan(&data)
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Expect(err).ToNot(HaveOccurred())
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Expect(bi.String()).To(Equal(data))
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actual := new(big.Int)
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actual.SetString(data, 10)
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Expect(actual).To(Equal(bi))
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})
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It("throws error when can't connect to the database", func() {
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invalidDatabase := config.Database{}
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node := core.Node{GenesisBlock: "GENESIS", NetworkID: "1", ID: "x123", ClientName: "geth"}
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_, err := postgres.NewDB(invalidDatabase, node)
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Expect(err).To(HaveOccurred())
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Expect(err.Error()).To(ContainSubstring(postgres.DbConnectionFailedMsg))
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})
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It("throws error when can't create node", func() {
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badHash := fmt.Sprintf("x %s", strings.Repeat("1", 100))
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node := core.Node{GenesisBlock: badHash, NetworkID: "1", ID: "x123", ClientName: "geth"}
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_, err := postgres.NewDB(test_config.DBConfig, node)
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Expect(err).To(HaveOccurred())
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Expect(err.Error()).To(ContainSubstring(postgres.SettingNodeFailedMsg))
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})
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})
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