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// -*- Mode: Go; indent-tabs-mode: t -*-
/*
* Copyright (C) 2023 Canonical Ltd
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 3 as
* published by the Free Software Foundation.
*
* 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
*/
package testutil
import (
"fmt"
"reflect"
"gopkg.in/check.v1"
)
// IsInterfaceNil checks that the value is a nil interface value (<nil>).
var IsInterfaceNil = &interfaceNilChecker{
&check.CheckerInfo{Name: "IsInterfaceNil", Params: []string{"value"}},
}
type interfaceNilChecker struct {
*check.CheckerInfo
}
func (*interfaceNilChecker) Check(params []any, names []string) (result bool, errMsg string) {
if reflect.ValueOf(params[0]).IsValid() {
return false, fmt.Sprintf("expected <nil> but got %T type", params[0])
}
return true, ""
}
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