https://github.com/alexsniffin/go-swap

Testing utility for swapping out private field members without the need of dependency inversion of control
https://github.com/alexsniffin/go-swap

go testing

Last synced: 6 months ago
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Testing utility for swapping out private field members without the need of dependency inversion of control

• Host: GitHub
• URL: https://github.com/alexsniffin/go-swap
• Owner: alexsniffin
• License: mit
• Created: 2020-06-24T22:43:55.000Z (about 6 years ago)
• Default Branch: master
• Last Pushed: 2020-06-25T17:29:53.000Z (about 6 years ago)
• Last Synced: 2024-06-20T16:32:42.002Z (about 2 years ago)
• Topics: go, testing
• Language: Go
• Homepage:
• Size: 4.88 KB
• Stars: 0
• Watchers: 2
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

          
# go-swap

Testing utility for swapping out private field members without the need of dependency inversion of control.

### Example

```go

ex := example{

    nested: nestedFields{

        subPrivateField: "old",

    },

}

myPointer := swap.Init(&ex).

    Find("nested", func(p unsafe.Pointer) interface{} {

        return (*nestedFields)(p)

    }).

    Find("subPrivateFieldOne", func(p unsafe.Pointer) interface{} {

        return (*string)(p)

    }).Pointer()

// Assert type

str := myPointer.(*string)

// Reassign new value to pointer

*str = "new"

// swap.example{nested:swap.nestedFields{subPrivateFieldOne:"old", subPrivateFieldTwo:0, subPrivateFieldThree:0, subPrivateFieldFour:0, subPrivateFieldFive:false, subPrivateFieldSix:0, subPrivateFieldSeven:0}}

// swap.example{nested:swap.nestedFields{subPrivateFieldOne:"new", subPrivateFieldTwo:0, subPrivateFieldThree:0, subPrivateFieldFour:0, subPrivateFieldFive:false, subPrivateFieldSix:0, subPrivateFieldSeven:0}}

```