From 69befae5fde1897cf68c4d44a146db5ba642c814 Mon Sep 17 00:00:00 2001 From: Raphaël Barrois Date: Thu, 26 Mar 2015 22:22:03 +0100 Subject: Allow lazy evaluation of FuzzyChoice's iterators (Closes #184). This allows the following idiom: ``user = factory.fuzzy.FuzzyChoice(User.objects.all())`` Previously, the ``User.objects.all()`` queryset would have been evaluated *at import time*; it is now evaluated with the first use of the ``FuzzyChoice``. --- tests/test_fuzzy.py | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) (limited to 'tests') diff --git a/tests/test_fuzzy.py b/tests/test_fuzzy.py index fd32705..c7e1106 100644 --- a/tests/test_fuzzy.py +++ b/tests/test_fuzzy.py @@ -74,6 +74,24 @@ class FuzzyChoiceTestCase(unittest.TestCase): res = d.evaluate(2, None, False) self.assertIn(res, [0, 1, 2]) + def test_lazy_generator(self): + class Gen(object): + def __init__(self, options): + self.options = options + self.unrolled = False + + def __iter__(self): + self.unrolled = True + return iter(self.options) + + opts = Gen([1, 2, 3]) + d = fuzzy.FuzzyChoice(opts) + self.assertFalse(opts.unrolled) + + res = d.evaluate(2, None, False) + self.assertIn(res, [1, 2, 3]) + self.assertTrue(opts.unrolled) + class FuzzyIntegerTestCase(unittest.TestCase): def test_definition(self): -- cgit v1.2.3