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module Matchers
class MatchPixels
attr_accessor :actual, :expected, :delta
def initialize(expected, delta:)
self.expected = expected.flatten
self.delta = delta
end
def matches?(actual)
self.actual = actual
actual.export_pixels.each_with_index.all? do |value, index|
expected_value = expected[index]
value.between?(expected_value - delta, expected_value + delta)
end
end
def failure_message
"expected all pixel values to differ by max #{delta}\n" \
"\nexpected: #{expected}\n got: #{actual.export_pixels}\n\n\n"
end
end
end
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