On Mon, Apr 08, 2019 at 08:33:44PM -0700, nanmu42 wrote:
> I don't know you, but to me, writing Golang test is a little dreary.
>
> As a discussion, I think this proposal could bring some improvement.
>
> How do you like it?
>
> https://github.com/golang/go/issues/31135
In your (admittedly contrived) example, I think a better solution would be to
provide your farm package with a mock result from the weather API call. For
example:
// farm/farm.go
package farm
// WaterVolume calculates the amount of water in liters to be applied when
// the temperature is t degrees celsius
func WaterVolume(t int) int {
return t * 5 // whatever
}
You could even do something like
// weather/weather.go
package weather
struct Weather {
Temperature int
}
// farm/farm.go
package farm
struct Farm {
wx *weather.Weather
}
func NewFarm(wx *weather.Weather) *Farm {
return &Farm{wx}
}
func (f *Farm) WaterVolume() int {
return f.wx.Temperature * 5
}
The added benefit of doing something like this is that you can cleanly separate
out what you're testing: do you really WANT to be testing your weather API calls
in the farm package?
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