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TOLERANCE = 0.00003 unless Object.const_defined?(:TOLERANCE)
class BeCloseMatcher
def initialize(expected, tolerance)
@expected = expected
@tolerance = tolerance
end
def matches?(actual)
@actual = actual
(@actual - @expected).abs < @tolerance
end
def failure_message
["Expected #{@actual}", "to be within #{@expected} +/- #{@tolerance}"]
end
def negative_failure_message
["Expected #{@actual}", "not to be within #{@expected} +/- #{@tolerance}"]
end
end
module MSpecMatchers
private def be_close(expected, tolerance)
BeCloseMatcher.new(expected, tolerance)
end
end
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