测试文件
require 'ex48/lexicon.rb'
require "test/unit"
class TestNAME < Test::Unit::TestCase
def test_directions()
assert_equal(Lexicon.scan("north"), [['direction', 'north']])
result = Lexicon.scan("north south east")
assert_equal(result, [['direction', 'north'], ['direction', 'south'], ['direction', 'east']])
end
def test_verbs()
assert_equal(Lexicon.scan("go"), [['verb', 'go']])
result = Lexicon.scan("go kill eat")
assert_equal(result, [['verb', 'go'], ['verb', 'kill'], ['verb', 'eat']])
end
def test_stops()
assert_equal(Lexicon.scan("the"), [['stop', 'the']])
result = Lexicon.scan("the in of")
assert_equal(result, [['stop', 'the'], ['stop', 'in'], ['stop', 'of']])
end
def test_nouns()
assert_equal(Lexicon.scan("bear"), [['noun', 'bear']])
result = Lexicon.scan("bear princess")
assert_equal(result, [['noun', 'bear'], ['noun', 'princess']])
end
def test_numbers()
assert_equal(Lexicon.scan("1234"), [['number', '1234']])
result = Lexicon.scan("3 91234")
assert_equal(result, [['number', '3'], ['number', '91234']])
end
def test_errors()
assert_equal(Lexicon.scan("ASDFADFASDF"), [['error', 'ASDFADFASDF']])
result = Lexicon.scan("bear IAS princess")
assert_equal(result, [['noun', 'bear'], ['error', 'IAS'], ['noun', 'princess']])
end
def test_downcase()
assert_equal(Lexicon.scan("BeaR"), [['noun', 'BeaR']])
end
end
程序文件
class Lexicon
def self.scan(words)
words = words.split(' ')
answer = []
words.each do |word|
down_word = word.downcase
if ['north', 'south', 'east'].include?(down_word)
answer << ['direction', word]
elsif ['go', 'kill', 'eat'].include?(down_word)
answer << ['verb', word]
elsif ['the', 'in', 'of'].include?(down_word)
answer << ['stop', word]
elsif ['bear', 'princess'].include?(down_word)
answer << ['noun', word]
elsif word =~ /^*[1-9]$/
answer << ['number', word]
else
answer << ['error', word]
end
end
return answer
end
end
