mspec/lib/mspec/helpers/numeric.rb
class Object
def nan_value
0/0.0
end
def infinity_value
1/0.0
end
def bignum_value(plus=0)
0x8000_0000_0000_0000 + plus
end
# This is a bit hairy, but we need to be able to write specs that cover the
# boundary between Fixnum and Bignum for operations like Fixnum#<<. Since
# this boundary is implementation-dependent, we use these helpers to write
# specs based on the relationship between values rather than specific
# values.
guard = SpecGuard.new
if guard.standard? or guard.implementation? :topaz or guard.implementation? :opal
if guard.wordsize? 32
def fixnum_max()
(2**30) - 1
end
def fixnum_min()
-(2**30)
end
elsif guard.wordsize? 64
def fixnum_max()
(2**62) - 1
end
def fixnum_min()
-(2**62)
end
end
elsif guard.implementation? :rubinius
def fixnum_max()
Fixnum::MAX
end
def fixnum_min()
Fixnum::MIN
end
elsif guard.implementation? :jruby
# Values from jruby/test/testFixnumBignumAutoconversion.rb
def fixnum_max()
9223372036854775807
end
def fixnum_min()
-9223372036854775808
end
elsif guard.implementation? :ironruby
def fixnum_max()
raise "fixnum_max() helper not implemented"
end
def fixnum_min()
raise "fixnum_min() helper not implemented"
end
elsif guard.implementation? :maglev
def fixnum_max()
raise "fixnum_max() helper not implemented"
end
def fixnum_min()
raise "fixnum_min() helper not implemented"
end
elsif guard.implementation? :macruby
def fixnum_max()
raise "fixnum_max() helper not implemented"
end
def fixnum_min()
raise "fixnum_min() helper not implemented"
end
else
def fixnum_max()
raise "unknown implementation for fixnum_max() helper"
end
def fixnum_min()
raise "unknown implementation for fixnum_min() helper"
end
end
end