def test_asarrayremoveoldmetadata(self):
dar = asarray(path=self.tempdirname1, array=[1,2],
metadata={'a':1}, overwrite=True)
dar = asarray(path=self.tempdirname1, array=[1, 2],
overwrite=True)
self.assertDictEqual(dict(dar.metadata), {})
def test_truncatetolen0(self):
with tempdirfile() as filename:
a = asarray(path=filename, array=[0, 1, 2, 3, 4],
dtype='int64', accessmode='r+')
truncate_array(a, 0)
self.assertEqual(len(a), 0)
ra = Array(filename)
self.assertEqual(len(a), 0)
def test_truncatebydirname(self):
with tempdirfile() as filename:
a = np.array([0, 1, 2, 3, 4], dtype='int64')
dar = asarray(path=filename, array=a, accessmode='r+')
truncate_array(filename, 2)
a = Array(filename)
self.assertArrayIdentical(a[:], np.array([0, 1],
dtype=a.dtype))
def check_arrayequaltoasarray(self, ndarray):
"""Tests if asarray creates an array of same shape and dtype and same
contents as input."""
dar = asarray(path=self.tempdirname1, array=ndarray, overwrite=True)
ndarray = np.asarray(ndarray) # could be list or tuple
self.assertArrayIdentical(dar[:], ndarray)
self.assertEqual(dar.dtype, ndarray.dtype)
self.assertEqual(dar.shape, ndarray.shape)
def test_asarraysequenceofzerodimnumpyscalars(self):
def a():
yield np.float32(0)
yield np.float32(1)
yield np.float32(2)
dar = asarray(path=self.tempdirname1, array=a(), overwrite=True)
self.assertArrayIdentical(dar[:], np.array([0,1,2], dtype=np.float32))
def test_truncateindextoohigh(self):
with tempdirfile() as filename:
a = np.array([0, 1, 2, 3, 4], dtype='int64')
dar = asarray(path=filename, array=a, overwrite=True,
accessmode='r+')
self.assertRaises(IndexError, truncate_array, dar, 10)
def test_truncateinvalidindextype(self):
with tempdirfile() as filename:
a = np.array([0, 1, 2, 3, 4], dtype='int64')
dar = asarray(path=filename, array=a, accessmode='r+')
self.assertRaises(TypeError, truncate_array, dar, 'a')
def test_asarraynumberfloat(self):
dar = asarray(path=self.tempdirname1, array=1.0, overwrite=True)
self.assertEqual(dar[0], 1.0)
def test_asarrayarratosamepath(self):
dar = asarray(path=self.tempdirname1, array=[0,1], overwrite=True)
self.assertRaises(ValueError, asarray, path=self.tempdirname1,
array=dar, overwrite=True)
def test_asarraykeepattrs(self):
class AttrList(list):
attrs = {'a': 1, 'b': 2}
a = AttrList([0, 0, 0, 0])
dar = asarray(path=self.tempdirname1, array=a, overwrite=True)
self.assertEqual(dict(dar.metadata), AttrList.attrs)
def test_asarrayarray(self):
a = np.arange(1024, dtype='int64').reshape(2, -1)
dar1 = asarray(path=self.tempdirname1, array=a, overwrite=True)
dar2 = asarray(path=self.tempdirname2, array=a, chunklen=5, overwrite=True)
self.assertArrayIdentical(dar1[:], dar2[:])
def test_asarraywritinglargerthanlenchunks(self):
a = np.arange(1024, dtype='int64').reshape(2, -1)
dar = asarray(path=self.tempdirname1, array=a, chunklen=4096, overwrite=True)
self.assertArrayIdentical(a, dar[:])
def test_asarraysequencesmallchunklen(self):
a = [1, 2, 3, 4, 5]
dar = asarray(path=self.tempdirname1, array=a, chunklen=3,
overwrite=True)
self.assertArrayIdentical(np.array(a), dar[:])
def test_asarrayoverwrite(self):
a = np.zeros((5,), dtype='float64')
_ = asarray(path=self.tempdirname1, array=a, overwrite=True)
b = np.ones((4,2), dtype='uint8')
dar = asarray(path=self.tempdirname1, array=b, overwrite=True)
self.assertArrayIdentical(dar[:], b)