Functions / Variables of function type / Essential Go
1234567891011121314151617181920212223
package main
var isUserAdminFn func(string) bool
func isUserAdminProduction(userName string) bool {
// an real implementation that talks to database
return false
}
func isUserAdminMock(userName string) bool {
// a fake implementation used for tests
return userName == "admin"
}
func isUserAdmin(userName string) bool {
return isUserAdminFn(userName)
}
func main() {
isUserAdminFn = isUserAdminProduction
// in test you would use:
// isUserAdminFn = isUserAdminMock
}
Go
INFO