package greeter import ( "testing" "github.com/golang/mock/gomock" "github.com/golang/mock/mockgen/tests/custom_package_name/client/v1" ) func TestGreeter_Greet(t *testing.T) { ctrl := gomock.NewController(t) defer ctrl.Finish() input := client.GreetInput{ Name: "Foo", } inputMaker := NewMockInputMaker(ctrl) inputMaker.EXPECT(). MakeInput(). Return(input) g := &Greeter{ InputMaker: inputMaker, Client: &client.Client{}, } greeting, err := g.Greet() if err != nil { t.Fatalf("Unexpected error: %v", err) } expected := "Hello, Foo!" if greeting != expected { t.Fatalf("Expected greeting to be %v but got %v", expected, greeting) } }