1.1 KiB
1.1 KiB
moq
Interface mocking tool for go generate.
By Mat Ryer and David Hernandez, with ideas lovingly stolen from Ernesto Jimenez.
Usage
moq InterfaceName -out mocks_test.go
Install
go install github.com/matryer/moq
How to use it
Mocking interfaces is a nice way to write unit tests where you can easily control the behaviour of the mocked object.
Moq creates a struct that has a function field for each method, which you can declare in your test code:
func TestCompleteSignup(t *testing.T) {
called := false
var sentTo string
mockedEmailSender = &SenderMock{
SendFunc: func(to, subject, body string) error {
called = true
sentTo = to
return nil
},
}
CompleteSignUp("me@email.com", mockedEmailSender)
if called == false {
t.Error("Sender.Send expected")
}
if sentTo != "me@email.com" {
t.Errorf("unexpected recipient: %s", sentTo)
}
}
The mocked structure implements the interface, where each method calls the associated function field.