这个练习是自己写测试了。按照函数一个个写，好像有点长了
from nose.tools import * from Game import parser from Game.lexicon import lexicon lexi = lexicon.scan("fighter kill bear") sen = parser.Sentence(lexi[0], lexi[1], lexi[2]) def test_class_Sentence(): assert_equal(sen.subject, 'fighter') assert_equal(sen.verb, 'kill') assert_equal(sen.object, 'bear') def test_peek(): assert_equal(parser.peek(lexi), 'noun') assert_equal(parser.peek([]), None) def test_match(): words = lexicon.scan("the bear will eat you") assert_equal(parser.match(words, 'noun'), None) assert_equal(parser.match(words, 'noun'), ('noun', 'bear')) def test_verb(): words = lexicon.scan("the bear will eat you") ## assert_raises(ParserError, parser.parse_verb, words) # NameError: global name 'ParseError' is not defined assert_raises(parser.ParserError, parser.parse_verb, words) words.pop(0) # pop bear assert_equal(parser.parse_verb(words), ('verb', 'eat')) def test_object(): words = lexicon.scan("will bear west next") assert_equal(parser.parse_object(words), ('noun', 'bear')) assert_equal(parser.parse_object(words), ('direction', 'west')) assert_raises(parser.ParserError, parser.parse_object, words) def test_subject(): words = lexicon.scan("kill the bear") senten = parser.parse_subject(words, ('noun','fighter')) assert_equal(senten.subject, 'fighter') assert_equal(senten.verb, 'kill') assert_equal(senten.object, 'bear') def test_sentence(): words = lexicon.scan("the fighter will kill the bear") senten = parser.parse_sentence(words) assert_equal(senten.subject, 'fighter') assert_equal(senten.verb, 'kill') assert_equal(senten.object, 'bear') # no subject test words = lexicon.scan("kill the bear") senten = parser.parse_sentence(words) assert_equal(senten.subject, 'player') assert_equal(senten.verb, 'kill') assert_equal(senten.object, 'bear') # error test words = lexicon.scan("777 eat bear") assert_raises(parser.ParserError, parser.parse_sentence, words) from Game import parser 改成 from Game.parser import * 的话，下面就不用加前缀了。2.
assert_raises (exception, fun, a, b)这样的形式，而且第一个Error不是string而是类名（不是很明白）
3.
测试的用例很多都是多余的，不过这样错的容易找一点
