Only test numeric infinity on PG 14+

pgtype/pgtype_test.go

@@ -4,6 +4,8 @@ import (
 	"database/sql"
 	"errors"
 	"net"
+	"regexp"
+	"strconv"
 	"testing"
 
 	"github.com/jackc/pgx/v5"
@@ -76,6 +78,25 @@ func skipCockroachDB(t testing.TB, msg string) {
 	}
 }
 
+func skipPostgreSQLVersionLessThan(t testing.TB, minVersion int64) {
+	conn := testutil.MustConnectPgx(t)
+	defer testutil.MustCloseContext(t, conn)
+
+	serverVersionStr := conn.PgConn().ParameterStatus("server_version")
+	serverVersionStr = regexp.MustCompile(`^[0-9]+`).FindString(serverVersionStr)
+	// if not PostgreSQL do nothing
+	if serverVersionStr == "" {
+		return
+	}
+
+	serverVersion, err := strconv.ParseInt(serverVersionStr, 10, 64)
+	require.NoError(t, err)
+
+	if serverVersion < minVersion {
+		t.Skipf("Test requires PostgreSQL v%d+", minVersion)
+	}
+}
+
 func TestTypeMapScanNilIsNoOp(t *testing.T) {
 	m := pgtype.NewMap()