Module: Quarry::Grammar::Assert

Defined in:
lib/quarry/grammar/assert.rb

Overview

Assert Nomenclature

Some people prefer TDD over BDD so we also provide an assertion-based nomenclature.

Instance Method Summary collapse

Instance Method Details

#assert(test = nil, msg = nil) ⇒ Object

Assert a operational relationship.

4.assert == 3



16
17
18
19
20
21
22
23
 
# File 'lib/quarry/grammar/assert.rb', line 16

def assert(test=nil, msg=nil)
  if test
    msg = "failed assertion (no message given)" unless msg
    raise Assertion.new(msg, caller) unless test
  else
    return Expectation.new(self, :backtrace=>caller)
  end
end

#assert!(test = nil, msg = nil) ⇒ Object Also known as: refute

Assert not an operational relationship. Read it as “assert not”.

4.assert! == 4

AUHTOR’S NOTE: This method would not be necessary if Ruby would allow != to be define as a method, or at least ! as a unary method.



34
35
36
37
38
39
40
41
 
# File 'lib/quarry/grammar/assert.rb', line 34

def assert!(test=nil, msg=nil)
  if test
    msg = "failed assertion (no message given)" unless msg
    raise Assertion.new(msg, caller) if test
  else
    return Expectation.new(self, :negate=>true, :backtrace=>caller)
  end
end