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