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https://github.com/alindeman/mock_proc

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# MockProc

[![Build Status](https://secure.travis-ci.org/alindeman/mock_proc.png)](http://travis-ci.org/alindeman/mock_proc)

An attempt to create a mock `Proc` object, so expectations can be set on how
it is called.

Ideal for testing callbacks; alternatives are discussed in [Avdi's blog
post](http://devblog.avdi.org/2011/12/12/testing-that-a-block-is-called/).

`mock_proc` is meant to plug into other mocking libraries. Right now it
supports rspec-mocks.

## rspec-mocks

```ruby
describe MockProc do
it "expects an exact number of calls" do
block = MockProc.new
block.should_be_called.twice

2.times { block.call }
end
end
```

You can use all of the same predicates you expect:

```ruby
describe MockProc do
it "expects arguments" do
block = MockProc.new
block.should_be_called.with(:foo)

block.call(:foo)
end
end
```

It works any way you invoke the block:

```ruby
describe MockProc do
it "allows all methods that invoke a block" do
block = MockProc.new
block.should_be_called.exactly(2).times

block[:foo]
block === :foo
end
end
```

## TODO

* Other mocking frameworks: mocha, ...?