Execute some code when the mock is called #37

javflores · 2016-01-29T05:21:07Z

I have found quite handy sometimes to have the possibility to execute some code when the mock is called. One good use case is raising an exception when the mock is called.
In RhinoMocks there is something like this:

myStub
    .Stub(_ => _.Create(Arg<Invoice>.Is.Anything))
    .WhenCalled(_ => 
    {
        throw new Exception
    );

Is that possible with mock?
Thanks by the way for the nice library

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eproxus · 2016-02-05T08:31:32Z

Yes, this is possible. As can be seen in the first example:

defmodule MyTest do
  use ExUnit.Case, async: false

  import Mock

  test "test_name" do
    with_mock HTTPotion, [get: fn(_url) -> "<html></html>" end] do
      HTTPotion.get("http://example.com")
      # Tests that make the expected call
      assert called HTTPotion.get("http://example.com")
    end
  end
end

The get function is replaced by another function entirely, in this case an anonymous function. You can either do whatever you want in there, e.g. [get: fn(url) -> my_code(url) end] or just reference another function you wrote that takes the same number of arguments, e.g. [get: &my_code/1].

jjh42 · 2016-02-07T22:25:09Z

Hopefully @eproxus answer resolved your question. Thanks.

jjh42 closed this as completed Feb 7, 2016

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Execute some code when the mock is called #37

Execute some code when the mock is called #37

javflores commented Jan 29, 2016

eproxus commented Feb 5, 2016

jjh42 commented Feb 7, 2016

Execute some code when the mock is called #37

Execute some code when the mock is called #37

Comments

javflores commented Jan 29, 2016

eproxus commented Feb 5, 2016

jjh42 commented Feb 7, 2016