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require 'ostruct'
require 'diffy'
module TestXml
class AssertionConfig < OpenStruct
def assert_name
"assert_#{name}"
end
def assert_not_name
"assert_not_#{name}"
end
def expectation
"must_#{matcher}"
end
end
ASSERTIONS = [
AssertionConfig.new(
:name => :xml_contain,
:matcher => :contain_xml,
:message => lambda { |expect, actual| "the xml:\n#{actual}\nshould contain xml:\n#{expect}" },
:message_when_negated => lambda { |expect, actual| "the xml:\n#{actual}\nshould not contain xml:\n#{expect} but it does" }
),
AssertionConfig.new(
:name => :xml_structure_contain,
:matcher => :contain_xml_structure,
:message => lambda { |expect, actual| "the xml:\n#{actual}\nshould match xml structure:\n#{expect}" },
:message_when_negated => lambda { |expect, actual| "the xml:\n#{actual}\nshould not match xml structure:\n#{expect} but it does" }
),
AssertionConfig.new(
:name => :xml_equal,
:matcher => :equal_xml,
:message => lambda { |expect, actual| sprintf "the xml:\n%s\nshould exactly match xml:\n%s\n\nDiff:\n%s", actual, expect, diff(expect, actual) },
:message_when_negated => lambda { |expect, actual| "the xml:\n#{actual}\nshould not exactly match xml:\n#{expect} but it does" }
),
AssertionConfig.new(
:name => :xml_structure_equal,
:matcher => :equal_xml_structure,
:message => lambda { |expect, actual| "the xml:\n#{actual}\nshould exactly match xml structure:\n#{expect}" },
:message_when_negated => lambda { |expect, actual| "the xml:\n#{actual}\nshould not exactly match xml structure:\n#{expect} but it does" }
)
]
def self.diff(expect, actual)
doc_actual = Nokogiri::XML.parse(actual, &:noblanks)
doc_expect = Nokogiri::XML.parse(expect, &:noblanks)
diff = Diffy::Diff.new(doc_expect.to_xml, doc_actual.to_xml, :context => 3, :include_diff_info => true).to_a
return "" if diff.empty?
# Skip diff headers, they're useless since they refer to tempfiles
diff[2..-1].join("")
end
module Assertions
ASSERTIONS.each do |cfg|
define_method(cfg.assert_name) do |a, b|
correct_assert(MatcherMethods.send(cfg.name, a, b), cfg.message.call(a, b))
end
define_method(cfg.assert_not_name) do |a, b|
correct_assert(! MatcherMethods.send(cfg.name, a, b), cfg.message_when_negated.call(a, b))
end
end
private
def correct_assert(boolean, message)
if RUBY_VERSION =~ /1.9.2/ or defined?(MiniTest)
assert(boolean, message)
else
assert_block(message) do
boolean
end
end
end
end
end
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