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class MatchYAMLMatcher
def initialize(expected)
if valid_yaml?(expected)
@expected = expected
else
@expected = expected.to_yaml
end
end
def matches?(actual)
@actual = actual
clean_yaml(@actual) == clean_yaml(@expected)
end
def failure_message
["Expected #{@actual.inspect}", " to match #{@expected.inspect}"]
end
def negative_failure_message
["Expected #{@actual.inspect}", " to match #{@expected.inspect}"]
end
protected
def clean_yaml(yaml)
yaml.gsub(/([^-]|^---)\s+\n/, "\\1\n").sub(/\n\.\.\.\n$/, "\n")
end
def valid_yaml?(obj)
require 'yaml'
begin
YAML.load(obj)
rescue
false
else
true
end
end
end
class Object
def match_yaml(expected)
MatchYAMLMatcher.new(expected)
end
end
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