test/yaml/test_yaml.rb


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# -*- mode: ruby; ruby-indent-level: 4; tab-width: 4 -*-
#												vim:sw=4:ts=4
# $Id$
#
require 'test/unit'
require 'yaml'

# [ruby-core:01946]
module YAML_Tests
    StructTest = Struct::new( :c )
end

class YAML_Unit_Tests < Test::Unit::TestCase
	#
	# Convert between YAML and the object to verify correct parsing and
	# emitting
	#
	def assert_to_yaml( obj, yaml )
		assert_equal( obj, YAML::load( yaml ) )
		assert_equal( obj, YAML::parse( yaml ).transform )
        assert_equal( obj, YAML::load( obj.to_yaml ) )
		assert_equal( obj, YAML::parse( obj.to_yaml ).transform )
        assert_equal( obj, YAML::load(
			obj.to_yaml( :UseVersion => true, :UseHeader => true, :SortKeys => true ) 
		) )
	end

	#
	# Test parser only
	#
	def assert_parse_only( obj, yaml )
		assert_equal( obj, YAML::load( yaml ) )
		assert_equal( obj, YAML::parse( yaml ).transform )
	end

    def assert_cycle( obj )
        assert_equal( obj, YAML::load( obj.to_yaml ) )
    end

    def assert_path_segments( path, segments )
        YAML::YPath.each_path( path ) { |choice|
            assert_equal( choice.segments, segments.shift )
        }
        assert_equal( segments.length, 0, "Some segments leftover: #{ segments.inspect }" )
    end

	#
	# Make a time with the time zone
	#
	def mktime( year, mon, day, hour, min, sec, usec, zone = "Z" )
        usec = usec.to_s.to_f * 1000000
		val = Time::utc( year.to_i, mon.to_i, day.to_i, hour.to_i, min.to_i, sec.to_i, usec )
		if zone != "Z"
			hour = zone[0,3].to_i * 3600
			min = zone[3,2].to_i * 60
			ofs = (hour + min)
			val = Time.at( val.to_f - ofs )
		end
		return val
	end

	#
	# Tests modified from 00basic.t in YAML.pm
	#
	def test_basic_map
		# Simple map
		assert_parse_only(
			{ 'one' => 'foo', 'three' => 'baz', 'two' => 'bar' }, <<EOY
one: foo
two: bar
three: baz
EOY
		)
	end

	def test_basic_strings
		# Common string types
		assert_cycle("x")
		assert_cycle(":x")
		assert_cycle(":")
		assert_parse_only(
			{ 1 => 'simple string', 2 => 42, 3 => '1 Single Quoted String',
			  4 => 'YAML\'s Double "Quoted" String', 5 => "A block\n  with several\n    lines.\n",
			  6 => "A \"chomped\" block", 7 => "A folded\n string\n", 8 => ": started string" },
			  <<EOY
1: simple string
2: 42
3: '1 Single Quoted String'
4: "YAML's Double \\\"Quoted\\\" String"
5: |
  A block
    with several
      lines.
6: |-
  A "chomped" block
7: >
  A
  folded
   string
8: ": started string"
EOY
		)
	end

	#
	# Test the specification examples
	# - Many examples have been changes because of whitespace problems that
	#   caused the two to be inequivalent, or keys to be sorted wrong
	#

	def test_spec_simple_implicit_sequence
	  	# Simple implicit sequence
		assert_to_yaml(
			[ 'Mark McGwire', 'Sammy Sosa', 'Ken Griffey' ], <<EOY
- Mark McGwire
- Sammy Sosa
- Ken Griffey
EOY
		)
	end

	def test_spec_simple_implicit_map
		# Simple implicit map
		assert_to_yaml(
			{ 'hr' => 65, 'avg' => 0.278, 'rbi' => 147 }, <<EOY
avg: 0.278
hr: 65
rbi: 147
EOY
		)
	end

	def test_spec_simple_map_with_nested_sequences
		# Simple mapping with nested sequences
		assert_to_yaml(
			{ 'american' => 
			  [ 'Boston Red Sox', 'Detroit Tigers', 'New York Yankees' ],
			  'national' =>
			  [ 'New York Mets', 'Chicago Cubs', 'Atlanta Braves' ] }, <<EOY
american:
  - Boston Red Sox
  - Detroit Tigers
  - New York Yankees
national:
  - New York Mets
  - Chicago Cubs
  - Atlanta Braves
EOY
		)
	end

	def test_spec_simple_sequence_with_nested_map
		# Simple sequence with nested map
		assert_to_yaml(
		  [
		    {'name' => 'Mark McGwire', 'hr' => 65, 'avg' => 0.278},
			{'name' => 'Sammy Sosa', 'hr' => 63, 'avg' => 0.288}
		  ], <<EOY
-
  avg: 0.278
  hr: 65
  name: Mark McGwire
-
  avg: 0.288
  hr: 63
  name: Sammy Sosa
EOY
		)
	end

	def test_spec_sequence_of_sequences
		# Simple sequence with inline sequences
		assert_parse_only(
		  [ 
		  	[ 'name', 'hr', 'avg' ],
			[ 'Mark McGwire', 65, 0.278 ],
			[ 'Sammy Sosa', 63, 0.288 ]
		  ], <<EOY
- [ name         , hr , avg   ]
- [ Mark McGwire , 65 , 0.278 ]
- [ Sammy Sosa   , 63 , 0.288 ]
EOY
		)
	end

	def test_spec_mapping_of_mappings
		# Simple map with inline maps
		assert_parse_only(
		  { 'Mark McGwire' =>
		    { 'hr' => 65, 'avg' => 0.278 },
			'Sammy Sosa' =>
		    { 'hr' => 63, 'avg' => 0.288 }
		  }, <<EOY
Mark McGwire: {hr: 65, avg: 0.278}
Sammy Sosa:   {hr: 63,
               avg: 0.288}