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class BeCloseToMatrixMatcher
def initialize(expected, tolerance = TOLERANCE)
SpecExpectation.matcher! rescue "Used with the balance_should_and_match branch of mspec"
@expected = Matrix[*expected]
@tolerance = tolerance
end
def matches?(actual)
@actual = actual
return false unless @actual.is_a? Matrix
return false unless @actual.row_size == @expected.row_size
@actual.row_size.times do |i|
a, e = @actual.row(i), @expected.row(i)
return false unless a.size == e.size
a.size.times do |j|
return false unless (a[j] - e[j]).abs < @tolerance
end
end
true
end
def failure_message
["Expected #{@expected}", "to be within +/- #{@tolerance} of #{@actual}"]
end
def negative_failure_message
["Expected #{@expected}", "not to be within +/- #{@tolerance} of #{@actual}"]
end
end
class Object
def be_close_to_matrix(expected, tolerance = TOLERANCE)
BeCloseToMatrixMatcher.new(expected, tolerance)
end
end
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