138 lines
3.8 KiB
Ruby
138 lines
3.8 KiB
Ruby
HERE = File.dirname(__FILE__)
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$LOAD_PATH[0,0] = File.join(HERE, '..', 'lib')
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require 'mongo'
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require 'rexml/document'
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require 'test/unit'
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# For each xml/bson file in the data subdirectory, we turn the XML into an
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# OrderedHash and then test both Ruby-to-BSON and BSON-to-Ruby translations.
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class RoundTripTest < Test::Unit::TestCase
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include XGen::Mongo::Driver
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@@ruby = nil
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def setup
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unless @@ruby
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names = Dir[File.join(HERE, 'data', '*.xml')].collect {|f| File.basename(f).sub(/\.xml$/, '') }
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@@ruby = {}
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names.each { |name| @@ruby[name] = xml_to_ruby(name) }
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end
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end
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def xml_to_ruby(name)
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File.open(File.join(HERE, 'data', "#{name}.xml")) { |f|
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doc = REXML::Document.new(f)
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doc_to_ruby(doc.root.elements['doc'])
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}
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end
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def element_to_ruby(e)
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type = e.name
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child = e.elements[1]
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case type
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when 'oid'
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ObjectID.from_string(e.text)
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when 'ref'
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dbref_to_ruby(e.elements)
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when 'int'
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e.text.to_i
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when 'number'
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e.text.to_f
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when 'string', 'code'
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e.text.to_s
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when 'boolean'
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e.text.to_s == 'true'
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when 'array'
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array_to_ruby(e.elements)
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when 'date'
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Time.at(e.text.to_f / 1000.0)
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when 'regex'
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regex_to_ruby(e.elements)
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when 'null'
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nil
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when 'doc'
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doc_to_ruby(e)
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else
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raise "Unknown type #{type} in element with name #{e.attributes['name']}"
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end
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end
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def doc_to_ruby(element)
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oh = OrderedHash.new
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element.elements.each { |e| oh[e.attributes['name']] = element_to_ruby(e) }
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oh
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end
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def array_to_ruby(elements)
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a = []
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elements.each { |e|
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index_str = e.attributes['name']
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a[index_str.to_i] = element_to_ruby(e)
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}
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a
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end
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def regex_to_ruby(elements)
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pattern = elements['pattern'].text
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options_str = elements['options'].text || ''
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options = 0
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options |= Regexp::IGNORECASE if options_str.include?('i')
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options |= Regexp::MULTILINE if options_str.include?('m')
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options |= Regexp::EXTENDED if options_str.include?('x')
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Regexp.new(pattern, options)
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end
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def dbref_to_ruby(elements)
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ns = elements['ns'].text
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oid_str = elements['oid'].text
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DBRef.new(nil, nil, nil, ns, ObjectID.from_string(oid_str))
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end
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# DEBUG
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# def test_foo
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# $stderr.puts "#{@@ruby['smorgasbord'].class.name}" # DEBUG
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# $stderr.puts "@@ruby['smorgasbord'] = #{@@ruby['smorgasbord'].inspect.gsub(/, /, ",\n")}" # DEBUG
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# end
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# Round-trip comparisons of Ruby-to-BSON and back.
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# * Take the objects that were read from XML
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# * Turn them into BSON bytes
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# * Compare that with the BSON files we have
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# * Turn those BSON bytes back in to Ruby objects
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# * Turn them back into BSON bytes
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# * Compare that with the BSON files we have (or the bytes that were already
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# generated)
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def test_round_trip
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@@ruby.each { |name, obj|
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File.open(File.join(HERE, 'data', "#{name}.bson"), 'r') { |f|
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# Read the BSON from the file
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bson = f.read
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bson = if RUBY_VERSION >= '1.9'
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bson.bytes.to_a
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else
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bson.split(//).collect { |c| c[0] }
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end
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# Turn the Ruby object into BSON bytes and compare with the BSON bytes
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# from the file.
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bson_from_ruby = BSON.new.serialize(obj).to_a
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assert_equal bson.length, bson_from_ruby.length
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assert_equal bson, bson_from_ruby
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# Turn those BSON bytes back into a Ruby object
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obj_from_bson = BSON.new.deserialize(ByteBuffer.new(bson_from_ruby))
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assert_kind_of OrderedHash, obj_from_bson
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# Turn that Ruby object into BSON and compare it to the original BSON
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# bytes.
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bson_from_ruby = BSON.new.serialize(obj_from_bson).to_a
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assert_equal bson.length, bson_from_ruby.length
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assert_equal bson, bson_from_ruby
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}
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}
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end
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end
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