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module AttributeNormalizer
module RSpecMatcher
def normalize_attribute(attribute)
NormalizeAttribute.new(attribute)
end
class NormalizeAttribute
def initialize(attribute)
@attribute = attribute
@from = ''
end
def description
"normalize #{@attribute} from #{@from.nil? ? 'nil' : "\"#{@from}\""} to #{@to.nil? ? 'nil' : "\"#{@to}\""}"
end
def failure_message
"#{@attribute} did not normalize as expected! \"#{@subject.send(@attribute)}\" != #{@to.nil? ? 'nil' : "\"#{@to}\""}"
end
def failure_message_when_negated
"expected #{@attribute} to not be normalized from #{@from.nil? ? 'nil' : "\"#{@from}\""} to #{@to.nil? ? 'nil' : "\"#{@to}\""}"
end
alias negative_failure_message failure_message_when_negated
def from(value)
@from = value
self
end
def to(value)
@to = value
self
end
def matches?(subject)
@subject = subject
@subject.send("#{@attribute}=", @from)
@subject.send(@attribute) == @to
end
end
end
end
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