def test_fraction_expansions(self):
self.assertEqual(fraction_expansions(1), [(3, 2)])
self.assertEqual(fraction_expansions(2), [(3, 2), (7, 5)])
self.assertEqual(fraction_expansions(3), [(3, 2), (7, 5), (17, 12)])
self.assertEqual(fraction_expansions(4), [(3, 2), (7, 5), (17, 12), (41, 29)])
def test_project_euler(self):
count = 0
for num, den in fraction_expansions(1000):
if len(str(num)) > len(str(den)):
count += 1
self.assertEqual(count, 153)
