plugeth-statediff/indexer/database/sql/postgres/pgx_test.go
Roy Crihfield ebc2eb37e7 Initial plugin implementation
* refactor packages, flags, subscriptions
* DRY refactor builder tests
* use mockgen to generate mocks
* update README
* MODE=statediff no longer needed for unit tests
* simplify func names, clean up metrics
* move write params to service field
* sql indexer: confirm quit after ipld cache reset
  prevents negative waitgroup panic
* don't let TotalDifficulty become nil
* use forked plugeth, plugeth-utils for now
2023-07-14 12:56:36 +08:00

122 lines
3.7 KiB
Go

// 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 postgres_test
import (
"context"
"fmt"
"math/big"
"strings"
"testing"
"github.com/jackc/pgx/v4/pgxpool"
"github.com/stretchr/testify/require"
"github.com/cerc-io/plugeth-statediff/indexer/database/sql/postgres"
"github.com/cerc-io/plugeth-statediff/indexer/node"
)
var (
pgConfig, _ = postgres.MakeConfig(postgres.TestConfig)
ctx = context.Background()
)
func expectContainsSubstring(t *testing.T, full string, sub string) {
if !strings.Contains(full, sub) {
t.Fatalf("Expected \"%v\" to contain substring \"%v\"\n", full, sub)
}
}
func TestPostgresPGX(t *testing.T) {
t.Run("connects to the sql", func(t *testing.T) {
dbPool, err := pgxpool.ConnectConfig(context.Background(), pgConfig)
if err != nil {
t.Fatalf("failed to connect to db with connection string: %s err: %v", pgConfig.ConnString(), err)
}
if dbPool == nil {
t.Fatal("DB pool is nil")
}
dbPool.Close()
})
t.Run("serializes big.Int to db", func(t *testing.T) {
// postgres driver doesn't support go big.Int type
// various casts in golang uint64, int64, overflow for
// transaction value (in wei) even though
// postgres numeric can handle an arbitrary
// sized int, so use string representation of big.Int
// and cast on insert
dbPool, err := pgxpool.ConnectConfig(context.Background(), pgConfig)
if err != nil {
t.Fatalf("failed to connect to db with connection string: %s err: %v", pgConfig.ConnString(), err)
}
defer dbPool.Close()
bi := new(big.Int)
bi.SetString("34940183920000000000", 10)
require.Equal(t, "34940183920000000000", bi.String())
defer dbPool.Exec(ctx, `DROP TABLE IF EXISTS example`)
_, err = dbPool.Exec(ctx, "CREATE TABLE example ( id INTEGER, data NUMERIC )")
if err != nil {
t.Fatal(err)
}
sqlStatement := `
INSERT INTO example (id, data)
VALUES (1, cast($1 AS NUMERIC))`
_, err = dbPool.Exec(ctx, sqlStatement, bi.String())
if err != nil {
t.Fatal(err)
}
var data string
err = dbPool.QueryRow(ctx, `SELECT cast(data AS TEXT) FROM example WHERE id = 1`).Scan(&data)
if err != nil {
t.Fatal(err)
}
require.Equal(t, data, bi.String())
actual := new(big.Int)
actual.SetString(data, 10)
require.Equal(t, bi, actual)
})
t.Run("throws error when can't connect to the database", func(t *testing.T) {
goodInfo := node.Info{GenesisBlock: "GENESIS", NetworkID: "1", ID: "x123", ClientName: "geth"}
_, err := postgres.NewPGXDriver(ctx, postgres.Config{}, goodInfo)
if err == nil {
t.Fatal("Expected an error")
}
expectContainsSubstring(t, err.Error(), postgres.DbConnectionFailedMsg)
})
t.Run("throws error when can't create node", func(t *testing.T) {
badHash := fmt.Sprintf("x %s", strings.Repeat("1", 100))
badInfo := node.Info{GenesisBlock: badHash, NetworkID: "1", ID: "x123", ClientName: "geth"}
_, err := postgres.NewPGXDriver(ctx, postgres.TestConfig, badInfo)
if err == nil {
t.Fatal("Expected an error")
}
expectContainsSubstring(t, err.Error(), postgres.SettingNodeFailedMsg)
})
}