stretchr/testify

Allow dynamic returns based on arguments

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#350 建立於 2016年9月15日

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 (35 留言) (59 反應) (0 負責人)Go (25,958 star) (1,704 fork)batch import
help wanted

描述

C# Moq allows to return data based on call arguments.

testify/mock don't. It's possible to do using Run, but it's a big mess of code.

It would be great to have something like this:

myMock.On("Load", mock.AnythingOfType("string")).ReturnFn(func (token string) (*MyObj, error) {
    if isValid(token) {
        return someStuff(), nil
    } else {
        return nil, errors.New("Oh!")
    }
})

I can send a PR if someone like this idea.

貢獻者指南

技術棧
go
領域
testing
議題類型
feature
難度面向新貢獻者的預計實作難度，1 表示很小改動，5 表示專家級工作。
3
預計時間有經驗貢獻者完成調查、實作、測試並準備 pull request 的粗略時間範圍。
1-2 days
活動狀態議題目前的可參與程度：新鮮、活躍、陳舊、阻塞或等待維護者輸入。
stale
清晰度議題是否清楚說明預期改動、驗收標準和下一步。
clear
前置要求
Gotestify mockGo interfaces
新手友善度1-100 的估計分數，表示該議題對首次貢獻者的友善程度。
50
研究方向
The issue proposes adding a `ReturnFn` method to `testify/mock` for dynamic returns based on arguments. Review existing mock methods like `On` and `Return` in `github.com/stretchr/testify/mock` to understand the pattern. Check the 35 comments for implementation discussions, potential pitfalls (e.g., type safety, interface handling), and any prior attempts. The feature is not yet implemented, so focus on designing a clean API that integrates with the existing mock structure.