37 lines
809 B
Ruby
37 lines
809 B
Ruby
module Spec
|
|
module Matchers
|
|
|
|
class BeClose #:nodoc:
|
|
def initialize(expected, delta)
|
|
@expected = expected
|
|
@delta = delta
|
|
end
|
|
|
|
def matches?(actual)
|
|
@actual = actual
|
|
(@actual - @expected).abs < @delta
|
|
end
|
|
|
|
def failure_message
|
|
"expected #{@expected} +/- (< #{@delta}), got #{@actual}"
|
|
end
|
|
|
|
def description
|
|
"be close to #{@expected} (within +- #{@delta})"
|
|
end
|
|
end
|
|
|
|
# :call-seq:
|
|
# should be_close(expected, delta)
|
|
# should_not be_close(expected, delta)
|
|
#
|
|
# Passes if actual == expected +/- delta
|
|
#
|
|
# == Example
|
|
#
|
|
# result.should be_close(3.0, 0.5)
|
|
def be_close(expected, delta)
|
|
Matchers::BeClose.new(expected, delta)
|
|
end
|
|
end
|
|
end
|