cheat sheets.

# 'cheat assertions' for the rest

assert_raise(*args) {|| ...}

Passes if the block raises one of the given exceptions.

Returns the thrown exception.

Examples:

  assert_raise RuntimeError, LoadError do
    raise 'Boom!!!'
  end


  assert_raise(ActionController::RoutingError) {
    assert_routing 'invalid/url', { }
  }

  # to check the message/class of the exception
  exception = assert_raise RuntimeError, LoadError do
     ...
  end
  puts exception.message
  puts exception.class