def test_return_none(self): self.assertEqual(lp.find_year("1979"), None)
def test_return_only_one(self): self.assertEqual(lp.find_year("2013 2014"), 2013)
def test_skip_too_high(self): self.assertEqual(lp.find_year("2015 2014"), 2014)
def test_skip_too_low(self): self.assertEqual(lp.find_year("1979 2014"), 2014)
def test_basic(self): self.assertEqual(lp.find_year("hello 1999"), 1999)