#coding=utf-8
import random
import unittest
class TestSequenceFunctions(unittest.TestCase):
  def setUp(self):
    self.seq = range(10)
  def test_shuffle(self):
    # make sure the shuffled sequence does not lose any elements
    random.shuffle(self.seq)
    self.seq.sort()
    self.assertEqual(self.seq, range(10))
    # should raise an exception for an immutable sequence
    self.assertRaises(TypeError, random.shuffle, (1,2,3))
  def test_choice(self):
    element = random.choice(self.seq)
    self.assertTrue(element in self.seq)
  def test_sample(self):
    with self.assertRaises(ValueError):
      random.sample(self.seq, 20)
    for element in random.sample(self.seq, 5):
      self.assertTrue(element in self.seq)
results_fields = [
  ("username", unicode),
  ("showid", unicode),
  ("total_pv", int),
  ("pubdate", unicode),
  ("tags", list),
  ("showname", unicode),
  ("pg", int),
  ("ext", str),
]
results_fields_map = dict(results_fields)
class TestDictValueFormatFunctions(unittest.TestCase):
  def setUp(self):
    self.results = [{
      "username": u"疯狂豆花",
      "showid": u"130e28f0fe0811e0a046",
      "total_pv": 14503214,
      "pubdate": u"2012-07-07 01:22:47",
      "tags": [
        "轩辕剑",
        "天之痕"
        ],
      "showname" : u"轩辕剑之天之痕",
      "pg" : 1,
      "ext" : "mp4"
    }
    ]
  def test_format(self):
    self.assertTrue(isinstance(self.results, list), "self.results's type must be dict but got {0}".format(type(self.results)))
    for r in self.results:
      for f in results_fields_map:
        value = r.get(f, None)
        self.assertTrue(isinstance(value, results_fields_map[f]), u"{0}'s type must be {1} but got {2}".format(value, results_fields_map[f], type(value)))
        #self.assertTrue(isinstance(value, results_fields_map[f]))
  def test_value(self):
    for r in self.results:
      self.assertEqual(r["pg"], 1)
      self.assertEqual(r["ext"], u"mp4")
if __name__ == '__main__':
  # unittest.main() # 用这个是最简单的，下面的用法可以同时测试多个类
  # unittest.TextTestRunner(verbosity=2).run(suite1) # 这个等价于上述但可设置verbosity=2，省去了运行时加-v
  suite1 = unittest.TestLoader().loadTestsFromTestCase(TestSequenceFunctions)
  suite2 = unittest.TestLoader().loadTestsFromTestCase(TestDictValueFormatFunctions)
  suite = unittest.TestSuite([suite1, suite2])
  unittest.TextTestRunner(verbosity=2).run(suite)