Is there a built-in way of specifying asserts in Rails that will throw an exception if an invariant is broken during development and testing?
Edit: Just to be clear, I'm looking for asserts that can be placed in models or controllers as opposed to asserts that you would use for unit tests.
There are many assert functions if you are writing tests. But for assertiona in the main code, there aren't any and you can roll your own easily.
Add something like this to environment.rb:
class AssertFailure < Exception
end
def assert(message = 'assertion failed')
unless block_given? and yield
raise message
end
end
and make it a no-op in your environments/production.rb so there is minimal overhead
def assert(message = 'assertion failed')
end
Then, in your code, you can assert to your heart's content:
assert { value == expected_value }
assert('value was not what was expected') { value == expected_value }
If value does not equal expected_value and you aren't running in production, an exception will be raised.
As @Gordon said, no there isn't. I ended up using the solid_assert gem by Jorge Manrubia, as mentioned in this question: Is it idiomatic Ruby to add an assert( ) method to Ruby's Kernel class?
Beyond these, you mean?
