class TestSlice(TestCase):
"""Can we slice FBO?"""
def setUp(self):
self.qs = FBO(
path=TEST_FILES_ROOT,
).exclude(
name__glob='*~',
).exclude(
name__glob='*.meta',
).order_by(
'name'
)
def test_sliced_filter(self):
# We want to test that the slice is applied last.
# However we prefetch at the start of the iterator,
# so we need to cause that prefetch to happen before
# the filter is applied, so that the filter will be
# applied within the iterator rather than in the
# prefetch.
#
# This incidentally also showed that our prefetch
# cache wasn't being propagated down to sub querysets,
# so it acts as a regression test against that also.
qs = self.qs.clone()
_ = iter(qs)
qs = qs.filter(
name__glob='*.rst'
)[2:]
self.assertEqual(
[
'test3.rst',
],
[ o.name for o in qs ],
)
def test_open_both(self):
qs = self.qs[:]
self.assertEqual(
[
'index.md',
'subdir/index.md',
'test1.md',
'test1.rst',
'test2.md',
'test2.rst',
'test3.rst',
],
[ o.name for o in qs ],
)
def test_open_start(self):
qs = self.qs[:4]
self.assertEqual(
[
'index.md',
'subdir/index.md',
'test1.md',
'test1.rst',
],
[ o.name for o in qs ],
)
def test_open_end(self):
qs = self.qs[1:]
self.assertEqual(
[
'subdir/index.md',
'test1.md',
'test1.rst',
'test2.md',
'test2.rst',
'test3.rst',
],
[ o.name for o in qs ],
)
def test_closed(self):
qs = self.qs[1:3]
self.assertEqual(
[
'subdir/index.md',
'test1.md',
],
[ o.name for o in qs ],
)
def test_sliced_slice1(self):
qs = self.qs[1:4][:2]
self.assertEqual(
[
'subdir/index.md',
'test1.md',
],
[ o.name for o in qs ],
)
def test_sliced_slice2(self):
qs = self.qs[1:3][:4]
self.assertEqual(
[
'subdir/index.md',
'test1.md',
],
[ o.name for o in qs ],
)
def test_sliced_slice3(self):
qs = self.qs[:2][1:4]
self.assertEqual(
[
'subdir/index.md',
'test1.md',
],
[ o.name for o in qs ],
)
def test_sliced_slice4(self):
qs = self.qs[1:4][1:3]
self.assertEqual(
[
'test1.md',
'test1.rst',
],
[ o.name for o in qs ],
)
def test_step(self):
qs = self.qs[1::2]
self.assertEqual(
[
'subdir/index.md',
'test1.rst',
'test2.rst',
],
[ o.name for o in qs ],
)
def test_sliced_step1(self):
qs = self.qs[1::2][:1]
self.assertEqual(
[
'subdir/index.md',
],
[ o.name for o in qs ],
)
def test_sliced_step2(self):
qs = self.qs[1::2][::]
self.assertEqual(
[
'subdir/index.md',
'test1.rst',
'test2.rst',
],
[ o.name for o in qs ],
)
def test_sliced_step3(self):
qs = self.qs[1:][::2]
self.assertEqual(
[
'subdir/index.md',
'test1.rst',
'test2.rst',
],
[ o.name for o in qs ],
)
