You'll want to check out `gomock` and `mockgen`. You'll need to write an
interface to be able to mock, so you may need to write a receiver struct to
encapsulate os.Hostname() or whatever you need to mock, then mock your
HostnameGetter (surely a better name than that), maybe?
type OsClient struct {}
(o *OsClient) GetHostname() (string, error) { return os.Hostname() }
type HostnameGetter interface { GetHostname() (string, error)}
Here is repo w/ documentation: https://github.com/golang/mock
And here are a couple other nice introductions:
- https://blog.codecentric.de/en/2017/08/gomock-tutorial/
- https://www.philosophicalhacker.com/post/getting-started-with-gomock/
On Thursday, August 1, 2019 at 7:09:54 AM UTC-5, Nitish Saboo wrote:
>
> Hi,
>
> How can we mock a function in Go like os.Hostname() or os.Getwd() ?
> Any framework or Library that we can use for mocking the function calls ?
>
> Thanks,
> Nitish
>
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