storj/private/dbutil/cockroachutil/openunique_test.go

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// Copyright (C) 2019 Storj Labs, Inc.
// See LICENSE for copying information.
package cockroachutil_test
import (
"database/sql"
"strings"
"testing"
"github.com/stretchr/testify/require"
"storj.io/storj/private/dbutil/pgutil/pgtest"
"storj.io/storj/private/dbutil/tempdb"
"storj.io/storj/private/testcontext"
)
func TestTempCockroachDB(t *testing.T) {
ctx := testcontext.New(t)
defer ctx.Cleanup()
if *pgtest.CrdbConnStr == "" {
t.Skip("CockroachDB flag missing")
}
prefix := "name#spaced/Test/DB"
testDB, err := tempdb.OpenUnique(*pgtest.CrdbConnStr, prefix)
require.NoError(t, err)
// save these so we can close testDB down below and then still try connecting to the same place
// (without requiring that the values stay intact in the testDB struct when we close it)
driverCopy := testDB.Driver
connStrCopy := testDB.ConnStr
// assert new test db exists and can be connected to again
otherConn, err := sql.Open(driverCopy, connStrCopy)
require.NoError(t, err)
defer ctx.Check(otherConn.Close)
// verify the name matches expectation
var dbName string
row := otherConn.QueryRow(`SELECT current_database()`)
err = row.Scan(&dbName)
require.NoError(t, err)
require.Truef(t, strings.HasPrefix(dbName, prefix), "Expected prefix of %q for current db name, but found %q", prefix, dbName)
// verify there is a db with such a name
var count int
row = otherConn.QueryRow(`SELECT COUNT(*) FROM pg_database WHERE datname = current_database()`)
err = row.Scan(&count)
require.NoError(t, err)
require.Equalf(t, 1, count, "Expected 1 DB with matching name, but counted %d", count)
// close testDB but leave otherConn open
err = testDB.Close()
require.NoError(t, err)
// assert new test db was deleted (we expect this connection to keep working, even though its
// database was deleted out from under it!)
row = otherConn.QueryRow(`SELECT COUNT(*) FROM pg_database WHERE datname = current_database()`)
err = row.Scan(&count)
require.NoError(t, err)
require.Equalf(t, 0, count, "Expected 0 DB with matching name, but counted %d (deletion failure?)", count)
}