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[#302] pkg/object: Convert nil Attribute to nil message

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Document that `Attribute.ToV2` method return `nil`
when called on `nil`. Document that `NewAttributeFromV2`
function return `nil` when called on `nil`. Write
corresponding unit tests.

Signed-off-by: Pavel Karpy <carpawell@nspcc.ru>
This commit is contained in:
Pavel Karpy 2021-06-08 18:50:45 +03:00 • committed by Alex Vanin
parent 5fda8ef796
commit 941b513eb3
2 changed files with 21 additions and 0 deletions
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4
pkg/object/attribute.go
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@ -8,6 +8,8 @@ import (
type Attribute object.Attribute
// NewAttributeFromV2 wraps v2 Attribute message to Attribute.
//
// Nil object.Attribute converts to nil.
func NewAttributeFromV2(aV2 *object.Attribute) *Attribute {
return (*Attribute)(aV2)
}
@ -40,6 +42,8 @@ func (a *Attribute) SetValue(v string) {
}
// ToV2 converts Attribute to v2 Attribute message.
//
// Nil Attribute converts to nil.
func (a *Attribute) ToV2() *object.Attribute {
return (*object.Attribute)(a)
}