how to put assertions in ruby code

I want to use the assertions and put valuidations in my ruby code (e.g: checking if a zip file is created, label is present, message in the text area, etc). I have put a few assert statements like `assert @selenium.is_text_present(textMessage)`, but they don't work.

Please let me know if any ruby gem for assertions is to be installed.

If you're just developing or debugging and need a quick one-liner

`throw 'Error message' unless thing == expected`

Use the [**solid_assert**](

[To see links please register here]

) gem to add assertions to Ruby.

**See:**
[solid_assert: A simple Ruby assertion
utility](

[To see links please register here]

)
[Is it idiomatic Ruby to add an assert( ) method to Ruby's Kernel
class?](

[To see links please register here]

)

For simple asserts, you're probably best off rolling your own assert method taking a block:

ruby-1.9.1-p378 > class AssertionError < RuntimeError
ruby-1.9.1-p378 ?> end
=> nil
ruby-1.9.1-p378 > def assert &block
ruby-1.9.1-p378 ?> raise AssertionError unless yield
ruby-1.9.1-p378 ?> end
=> nil
ruby-1.9.1-p378 > assert { 1 > 0 }
=> nil
ruby-1.9.1-p378 > assert { 5 == 12 }
AssertionError: AssertionError
from (irb):8:in `assert'
from (irb):11
from /Users/mr/.rvm/rubies/ruby-1.9.1-p378/bin/irb:17:in `<main>'

In copypastastable form:

class AssertionError < RuntimeError
end

def assert &block
raise AssertionError unless yield
end

i = 1
assert {i >= 0}
assert { 5 == 12 }