Oh, I forgot to merge this before 0.20.1, sorry.

In any case, I think require "spec" and require "spec/spec" look very similar to it might be confusing. Maybe we can use require "spec/dsl"? (because you basically want the DSL)

To do that you might need to make a few more changes, but I think I would prefer that name (I know there is a spec/dsl file now, but we can freely move things around because everyone just does require "spec")

What about require "assertions" because that's essentially what the should part of the dsl is.

@kostya What is the real use case behind this?

I can imagine this:

if some_condition_doesnt_hold
  send_email_saying_assertion_failed
end

But I don't know if I'd do it with the spec dsl... for one, it's a bit slower because an exception is raised. But in general, I think an if is better here.

need to write many checks, for ~ 50 tasks, especially when you parse something from internet, it can include many conditions, need nice error messages from it.

class SomeTask
  # ...

  # check that task is ok executed
  check do |value|
    value["bla"].should eq "something"
    value["aaa"].should contain("some")
    value["bbb"].should eq 10
    value["ccc"].should eq [1, 2, 3]
    value["d"].as_i.should be > 0
    # ...
  end
end

if i write it with if and custom error messages, code become so bigger.
speed no matter here, because it checks periodically