def test_max(self):
# Sanity check of reduction op
self.assertEqual(ddesc_as_py(blaze.eval(blaze.max(5)).ddesc), 5)
self.assertRaises(ValueError, blaze.eval, blaze.max([]))
self.assertEqual(ddesc_as_py(blaze.eval(blaze.max([3, -2])).ddesc), 3)
self.assertEqual(ddesc_as_py(blaze.eval(blaze.max([1.5, 2.0])).ddesc),
2.0)
def test_descriptor_setitem(self):
dd = HDF5_DDesc(self.hdf5_file, '/g/a2', mode='a')
self.assertEqual(dd.dshape, datashape.dshape('2 * 3 * int64'))
dd[1, 2] = 10
self.assertEqual(ddesc_as_py(dd[1, 2]), 10)
dd[1] = [10, 11, 12]
self.assertEqual(ddesc_as_py(dd[1]), [10, 11, 12])
def test_bitwise_xor_bool(self):
t = blaze.array(True)
f = blaze.array(False)
self.assertEqual(ddesc_as_py((t ^ t).ddesc), False)
self.assertEqual(ddesc_as_py((t ^ f).ddesc), True)
self.assertEqual(ddesc_as_py((f ^ t).ddesc), True)
self.assertEqual(ddesc_as_py((f ^ f).ddesc), False)
def test_bitwise_and_bool(self):
t = blaze.array(True)
f = blaze.array(False)
self.assertEqual(ddesc_as_py((t & t).ddesc), True)
self.assertEqual(ddesc_as_py((t & f).ddesc), False)
self.assertEqual(ddesc_as_py((f & t).ddesc), False)
self.assertEqual(ddesc_as_py((f & f).ddesc), False)
def test_descriptor_setitem(self):
dd = HDF5_DDesc(self.hdf5_file, '/g/a2', mode='a')
self.assertEqual(dd.dshape, datashape.dshape('2 * 3 * int64'))
dd[1,2] = 10
self.assertEqual(ddesc_as_py(dd[1,2]), 10)
dd[1] = [10, 11, 12]
self.assertEqual(ddesc_as_py(dd[1]), [10, 11, 12])
def test_product(self):
# Sanity check of reduction op
self.assertEqual(ddesc_as_py(blaze.eval(blaze.product(5)).ddesc), 5)
self.assertEqual(ddesc_as_py(blaze.eval(blaze.product([])).ddesc), 1)
self.assertEqual(ddesc_as_py(blaze.eval(blaze.product([3, -2])).ddesc),
-6)
self.assertEqual(
ddesc_as_py(blaze.eval(blaze.product([1.5, 2.0])).ddesc), 3.0)
def test_content(self):
dd = CSV_DDesc(self.csv_file,
dialect='excel',
schema=self.schema,
delimiter=' ')
print(ddesc_as_py(dd))
s = str(ddesc_as_py(dd))
assert 'Alice' in s and 'Bob' in s
def test_product(self):
# Sanity check of reduction op
self.assertEqual(ddesc_as_py(blaze.eval(blaze.product(5)).ddesc), 5)
self.assertEqual(ddesc_as_py(blaze.eval(blaze.product([])).ddesc), 1)
self.assertEqual(ddesc_as_py(blaze.eval(blaze.product([3, -2])).ddesc),
-6)
self.assertEqual(ddesc_as_py(blaze.eval(blaze.product([1.5, 2.0])).ddesc),
3.0)
def test_ragged(self):
a = blaze.array([[1], [2, 3], [4, 5, 6]])
b = blaze.array([[1, 2, 3], [4, 5], [6]])
c = blaze.eval(a + b)
self.assertEqual(ddesc_as_py(c.ddesc),
[[2, 3, 4], [6, 8], [10, 11, 12]])
c = blaze.eval(2 * a - b)
self.assertEqual(ddesc_as_py(c.ddesc), [[1, 0, -1], [0, 1], [2, 4, 6]])
def test_max(self):
# Sanity check of reduction op
self.assertEqual(ddesc_as_py(blaze.eval(blaze.max(5)).ddesc), 5)
self.assertRaises(ValueError, blaze.eval, blaze.max([]))
self.assertEqual(ddesc_as_py(blaze.eval(blaze.max([3, -2])).ddesc),
3)
self.assertEqual(ddesc_as_py(blaze.eval(blaze.max([1.5, 2.0])).ddesc),
2.0)
def test_add(self):
types = ['int8', 'int16', 'int32', 'int64']
for type_ in types:
a = blaze.array(range(3), dshape=type_)
c = blaze.eval(a+a)
self.assertEqual(ddesc_as_py(c.ddesc), [0, 2, 4])
c = blaze.eval(((a+a)*a))
self.assertEqual(ddesc_as_py(c.ddesc), [0, 2, 8])
def test_descriptor_getitem_types(self):
dd = HDF5_DDesc(self.hdf5_file, '/g/a2')
self.assertEqual(dd.dshape, datashape.dshape('2 * 3 * int64'))
# Indexing should produce DyND_DDesc instances
self.assertTrue(isinstance(dd[0], DyND_DDesc))
self.assertEqual(ddesc_as_py(dd[0]), [1, 2, 3])
self.assertTrue(isinstance(dd[1, 2], DyND_DDesc))
self.assertEqual(ddesc_as_py(dd[1, 2]), 1)
def test_descriptor_getitem_types(self):
dd = HDF5_DDesc(self.hdf5_file, '/g/a2')
self.assertEqual(dd.dshape, datashape.dshape('2 * 3 * int64'))
# Indexing should produce DyND_DDesc instances
self.assertTrue(isinstance(dd[0], DyND_DDesc))
self.assertEqual(ddesc_as_py(dd[0]), [1,2,3])
self.assertTrue(isinstance(dd[1,2], DyND_DDesc))
self.assertEqual(ddesc_as_py(dd[1,2]), 1)
def test_descriptor_setitem(self):
if not netCDF4_is_here: return
dd = netCDF4_DDesc(self.nc4_file, '/g/a2', mode='a')
self.assertEqual(dd.dshape, datashape.dshape('2 * 3 * int64'))
dd[1,2] = 10
self.assertEqual(ddesc_as_py(dd[1,2]), 10)
dd[1] = [10, 11, 12]
self.assertEqual(ddesc_as_py(dd[1]), [10, 11, 12])
def test_add(self):
types = ['int8', 'int16', 'int32', 'int64']
for type_ in types:
a = blaze.array(range(3), dshape=type_)
c = blaze.eval(a + a)
self.assertEqual(ddesc_as_py(c.ddesc), [0, 2, 4])
c = blaze.eval(((a + a) * a))
self.assertEqual(ddesc_as_py(c.ddesc), [0, 2, 8])
def test_any(self):
# Sanity check of reduction op
self.assertEqual(ddesc_as_py(blaze.eval(blaze.any(True)).ddesc), True)
self.assertEqual(ddesc_as_py(blaze.eval(blaze.any(False)).ddesc), False)
self.assertEqual(ddesc_as_py(blaze.eval(blaze.any(blaze.array([], dshape='0 * bool'))).ddesc), False)
self.assertEqual(ddesc_as_py(blaze.eval(blaze.any([False, True])).ddesc),
True)
self.assertEqual(ddesc_as_py(blaze.eval(blaze.any([False, False])).ddesc),
False)
def test_add_with_pyobj(self):
a = blaze.array(3) + 3
self.assertEqual(ddesc_as_py(a.ddesc), 6)
a = 3 + blaze.array(4)
self.assertEqual(ddesc_as_py(a.ddesc), 7)
a = blaze.array([1, 2]) + 4
self.assertEqual(ddesc_as_py(a.ddesc), [5, 6])
a = [1, 2] + blaze.array(5)
self.assertEqual(ddesc_as_py(a.ddesc), [6, 7])
def test_var_dim(self):
a = nd.array([[1, 2, 3], [4, 5], [6]])
dd = DyND_DDesc(a)
self.assertEqual(dd.dshape, datashape.dshape('3 * var * int32'))
self.assertEqual(ddesc_as_py(dd), [[1, 2, 3], [4, 5], [6]])
self.assertEqual(ddesc_as_py(dd[0]), [1, 2, 3])
self.assertEqual(ddesc_as_py(dd[1]), [4, 5])
self.assertEqual(ddesc_as_py(dd[2]), [6])
def test_descriptor_getitem_types(self):
if not netCDF4_is_here: return
dd = netCDF4_DDesc(self.nc4_file, '/g/a2')
self.assertEqual(dd.dshape, datashape.dshape('2 * 3 * int64'))
# Indexing should produce DyND_DDesc instances
self.assertTrue(isinstance(dd[0], DyND_DDesc))
self.assertEqual(ddesc_as_py(dd[0]), [1,2,3])
self.assertTrue(isinstance(dd[1,2], DyND_DDesc))
self.assertEqual(ddesc_as_py(dd[1,2]), 1)
def test_add_with_pyobj(self):
a = blaze.array(3) + 3
self.assertEqual(ddesc_as_py(a.ddesc), 6)
a = 3 + blaze.array(4)
self.assertEqual(ddesc_as_py(a.ddesc), 7)
a = blaze.array([1, 2]) + 4
self.assertEqual(ddesc_as_py(a.ddesc), [5, 6])
a = [1, 2] + blaze.array(5)
self.assertEqual(ddesc_as_py(a.ddesc), [6, 7])
def test_ragged(self):
a = blaze.array([[1], [2, 3], [4, 5, 6]])
b = blaze.array([[1, 2, 3], [4, 5], [6]])
c = blaze.eval(a + b)
self.assertEqual(ddesc_as_py(c.ddesc),
[[2, 3, 4], [6, 8], [10, 11, 12]])
c = blaze.eval(2 * a - b)
self.assertEqual(ddesc_as_py(c.ddesc),
[[1, 0, -1], [0, 1], [2, 4, 6]])
def test_var_dim(self):
a = nd.array([[1, 2, 3], [4, 5], [6]])
dd = DyND_DDesc(a)
self.assertEqual(dd.dshape, datashape.dshape('3 * var * int32'))
self.assertEqual(ddesc_as_py(dd), [[1, 2, 3], [4, 5], [6]])
self.assertEqual(ddesc_as_py(dd[0]), [1, 2, 3])
self.assertEqual(ddesc_as_py(dd[1]), [4, 5])
self.assertEqual(ddesc_as_py(dd[2]), [6])
def test_descriptor_getitem_types(self):
a = nd.array([[1, 2, 3], [4, 5, 6]])
dd = DyND_DDesc(a)
self.assertEqual(dd.dshape, datashape.dshape('2 * 3 * int32'))
# Indexing should produce DyND_DDesc instances
self.assertTrue(isinstance(dd[0], DyND_DDesc))
self.assertEqual(ddesc_as_py(dd[0]), [1,2,3])
self.assertTrue(isinstance(dd[1,2], DyND_DDesc))
self.assertEqual(ddesc_as_py(dd[1,2]), 6)
def test_descriptor_getitem_types(self):
a = nd.array([[1, 2, 3], [4, 5, 6]])
dd = DyND_DDesc(a)
self.assertEqual(dd.dshape, datashape.dshape('2 * 3 * int32'))
# Indexing should produce DyND_DDesc instances
self.assertTrue(isinstance(dd[0], DyND_DDesc))
self.assertEqual(ddesc_as_py(dd[0]), [1, 2, 3])
self.assertTrue(isinstance(dd[1, 2], DyND_DDesc))
self.assertEqual(ddesc_as_py(dd[1, 2]), 6)
def test_create_record(self):
# A simple record array
a = blaze.array([(10, 3.5), (15, 2.25)],
dshape="var * {val: int32, flt: float32}")
self.assertEqual(ddesc_as_py(a.ddesc), [{'val': 10, 'flt': 3.5},
{'val': 15, 'flt': 2.25}])
# Test field access via attributes
aval = a.val
self.assertEqual(ddesc_as_py(aval.ddesc), [10, 15])
aflt = a.flt
self.assertEqual(ddesc_as_py(aflt.ddesc), [3.5, 2.25])
def test_scalar(self):
a = ctypes.c_int(3)
dd = data_descriptor_from_ctypes(a, writable=True)
self.assertEqual(dd.dshape, dshape('int32'))
self.assertEqual(ddesc_as_py(dd), 3)
self.assertTrue(isinstance(ddesc_as_py(dd), int))
a = ctypes.c_float(3.25)
dd = data_descriptor_from_ctypes(a, writable=True)
self.assertEqual(dd.dshape, dshape('float32'))
self.assertEqual(ddesc_as_py(dd), 3.25)
self.assertTrue(isinstance(ddesc_as_py(dd), float))
def test_1d_array(self):
# An array where the size is in the type
a = ffi.new('short[32]', [2 * i for i in range(32)])
dd = data_descriptor_from_cffi(ffi, a, writable=True)
self.assertEqual(dd.dshape, dshape('32 * int16'))
self.assertEqual(ddesc_as_py(dd), [2 * i for i in range(32)])
# An array where the size is not in the type
a = ffi.new('double[]', [1.5 * i for i in range(32)])
dd = data_descriptor_from_cffi(ffi, a, writable=True)
self.assertEqual(dd.dshape, dshape('32 * float64'))
self.assertEqual(ddesc_as_py(dd), [1.5 * i for i in range(32)])
def test_scalar(self):
a = ffi.new('int *', 3)
dd = data_descriptor_from_cffi(ffi, a, writable=True)
self.assertEqual(dd.dshape, dshape('int32'))
self.assertEqual(ddesc_as_py(dd), 3)
self.assertTrue(isinstance(ddesc_as_py(dd), int))
a = ffi.new('float *', 3.25)
dd = data_descriptor_from_cffi(ffi, a, writable=True)
self.assertEqual(dd.dshape, dshape('float32'))
self.assertEqual(ddesc_as_py(dd), 3.25)
self.assertTrue(isinstance(ddesc_as_py(dd), float))
def test_scalar(self):
a = ctypes.c_int(3)
dd = data_descriptor_from_ctypes(a, writable=True)
self.assertEqual(dd.dshape, dshape('int32'))
self.assertEqual(ddesc_as_py(dd), 3)
self.assertTrue(isinstance(ddesc_as_py(dd), int))
a = ctypes.c_float(3.25)
dd = data_descriptor_from_ctypes(a, writable=True)
self.assertEqual(dd.dshape, dshape('float32'))
self.assertEqual(ddesc_as_py(dd), 3.25)
self.assertTrue(isinstance(ddesc_as_py(dd), float))
def test_sum_zerosize(self):
# Empty sum operations should produce 0, the reduction identity
self.assertEqual(ddesc_as_py(blaze.eval(blaze.sum([])).ddesc), 0)
self.assertEqual(ddesc_as_py(blaze.eval(blaze.sum([],
keepdims=True)).ddesc),
[0])
self.assertEqual(ddesc_as_py(blaze.eval(blaze.sum([[], []])).ddesc), 0)
self.assertEqual(ddesc_as_py(blaze.eval(blaze.sum([[], []],
keepdims=True)).ddesc),
[[0]])
self.assertEqual(ddesc_as_py(blaze.eval(blaze.sum([[], []],
axis=-1)).ddesc),
[0, 0])
self.assertEqual(ddesc_as_py(blaze.eval(blaze.sum([[], []],
axis=-1,
keepdims=True)).ddesc),
[[0], [0]])
# If we're only reducing on a non-empty dimension, we might still
# end up with zero-sized outputs
self.assertEqual(ddesc_as_py(blaze.eval(blaze.sum([[], []],
axis=0)).ddesc),
[])
self.assertEqual(ddesc_as_py(blaze.eval(blaze.sum([[], []],
axis=0,
keepdims=True)).ddesc),
[[]])
def test_any(self):
# Sanity check of reduction op
self.assertEqual(ddesc_as_py(blaze.eval(blaze.any(True)).ddesc), True)
self.assertEqual(ddesc_as_py(blaze.eval(blaze.any(False)).ddesc),
False)
self.assertEqual(
ddesc_as_py(
blaze.eval(blaze.any(blaze.array([],
dshape='0 * bool'))).ddesc),
False)
self.assertEqual(
ddesc_as_py(blaze.eval(blaze.any([False, True])).ddesc), True)
self.assertEqual(
ddesc_as_py(blaze.eval(blaze.any([False, False])).ddesc), False)
def test_1d_array(self):
a = (ctypes.c_short * 32)()
for i in range(32):
a[i] = 2 * i
dd = data_descriptor_from_ctypes(a, writable=True)
self.assertEqual(dd.dshape, dshape('32 * int16'))
self.assertEqual(ddesc_as_py(dd), [2 * i for i in range(32)])
a = (ctypes.c_double * 32)()
for i in range(32):
a[i] = 1.5 * i
dd = data_descriptor_from_ctypes(a, writable=True)
self.assertEqual(dd.dshape, dshape('32 * float64'))
self.assertEqual(ddesc_as_py(dd), [1.5 * i for i in range(32)])
def test_2d_array(self):
# An array where the leading array size is in the type
vals = [[2**i + j for i in range(35)] for j in range(32)]
a = ffi.new('long long[32][35]', vals)
dd = data_descriptor_from_cffi(ffi, a, writable=True)
self.assertEqual(dd.dshape, dshape('32 * 35 * int64'))
self.assertEqual(ddesc_as_py(dd), vals)
# An array where the leading array size is not in the type
vals = [[a + b * 2 for a in range(35)] for b in range(32)]
a = ffi.new('unsigned char[][35]', vals)
dd = data_descriptor_from_cffi(ffi, a, writable=True)
self.assertEqual(dd.dshape, dshape('32 * 35 * uint8'))
self.assertEqual(ddesc_as_py(dd), vals)
def test_1d_array(self):
a = (ctypes.c_short * 32)()
for i in range(32):
a[i] = 2*i
dd = data_descriptor_from_ctypes(a, writable=True)
self.assertEqual(dd.dshape, dshape('32 * int16'))
self.assertEqual(ddesc_as_py(dd), [2*i for i in range(32)])
a = (ctypes.c_double * 32)()
for i in range(32):
a[i] = 1.5*i
dd = data_descriptor_from_ctypes(a, writable=True)
self.assertEqual(dd.dshape, dshape('32 * float64'))
self.assertEqual(ddesc_as_py(dd), [1.5*i for i in range(32)])
def test_uints(self):
types = ['uint8', 'uint16', 'uint32', 'uint64']
for type_ in types:
a = blaze.array(np.arange(3), dshape=type_)
dtype = to_numpy_dtype(a.dshape)
self.assertEqual(dtype, np.dtype(type_))
self.assertEqual(ddesc_as_py(a.ddesc), [0, 1, 2])
def test_getitem_start_step(self):
dd = CSV_DDesc(self.csv_file, schema=self.schema)
el = dd[1::2]
self.assertTrue(isinstance(el, DyND_DDesc))
vals = ddesc_as_py(el)
self.assertEqual(vals, [
{u'f0': u'k2', u'f1': u'v2', u'f2': 2, u'f3': True}])
def test_getitem_stop(self):
dd = CSV_DDesc(self.csv_file, schema=self.schema)
el = dd[:1]
self.assertTrue(isinstance(el, DyND_DDesc))
vals = ddesc_as_py(el)
self.assertEqual(vals, [
{u'f0': u'k1', u'f1': u'v1', u'f2': 1, u'f3': False}])
def test_uints(self):
types = ['uint8', 'uint16', 'uint32', 'uint64']
for type_ in types:
a = blaze.array(np.arange(3), dshape=type_)
dtype = to_numpy_dtype(a.dshape)
self.assertEqual(dtype, np.dtype(type_))
self.assertEqual(ddesc_as_py(a.ddesc), [0, 1, 2])
def test_append2(self):
ddesc = BLZ_DDesc(path=self.rootdir, mode='w')
a = blaze.empty('0 * 2 * float64', ddesc=ddesc)
self.assertTrue(isinstance(a, blaze.Array))
lvals = [[i,i*2] for i in range(10)]
append(a, lvals)
self.assertEqual(ddesc_as_py(a.ddesc), lvals)
def test_basic_object_type(self):
self.assertTrue(issubclass(DyND_DDesc, DDesc))
a = nd.array([[1, 2, 3], [4, 5, 6]])
dd = DyND_DDesc(a)
# Make sure the right type is returned
self.assertTrue(isinstance(dd, DDesc))
self.assertEqual(ddesc_as_py(dd), [[1, 2, 3], [4, 5, 6]])
def function(self):
A = getattr(self, storage1 + 'A')
B = getattr(self, storage2 + 'B')
Rd = kernel(A, B)
self.assert_(isinstance(Rd, blaze.Array))
self.assert_(Rd.ddesc.capabilities.deferred)
p = _ddesc(storage3 + 'Rd') if storage3 == 'dsk' else None
try:
Rc = blaze.eval(Rd, ddesc=p)
self.assert_(isinstance(Rc, blaze.Array))
npy_data = getattr(self, 'npy' + R)
assert_allclose(np.array(ddesc_as_py(Rc.ddesc)), npy_data)
if storage3 == 'dsk':
self.assert_(Rc.ddesc.capabilities.persistent)
else:
self.assert_(not Rc.ddesc.capabilities.persistent)
finally:
try:
if p is not None:
p.remove()
except:
pass # show the real error...
def test_iter(self):
dd = CSV_DDesc(self.csv_file, schema=self.schema)
# Iteration should produce DyND_DDesc instances
vals = []
for el in dd:
self.assertTrue(isinstance(el, DyND_DDesc))
self.assertTrue(isinstance(el, DDesc))
vals.append(ddesc_as_py(el))
self.assertEqual(vals, [{
u'f0': u'k1',
u'f1': u'v1',
u'f2': 1,
u'f3': False
}, {
u'f0': u'k2',
u'f1': u'v2',
u'f2': 2,
u'f3': True
}, {
u'f0': u'k3',
u'f1': u'v3',
u'f2': 3,
u'f3': False
}])
def test_basic_object_type(self):
self.assertTrue(issubclass(DyND_DDesc, DDesc))
a = nd.array([[1, 2, 3], [4, 5, 6]])
dd = DyND_DDesc(a)
# Make sure the right type is returned
self.assertTrue(isinstance(dd, DDesc))
self.assertEqual(ddesc_as_py(dd), [[1, 2, 3], [4, 5, 6]])
def test_append2(self):
ddesc = HDF5_DDesc(path=self.file, datapath='/earray', mode='a')
a = blaze.empty('0 * 2 * float64', ddesc=ddesc)
self.assertTrue(isinstance(a, blaze.Array))
lvals = [[i,i*2] for i in range(10)]
append(a, lvals)
self.assertEqual(ddesc_as_py(a.ddesc), lvals)
def function(self):
A = getattr(self, storage1 + 'A')
B = getattr(self, storage2 + 'B')
Rd = kernel(A, B)
self.assert_(isinstance(Rd, blaze.Array))
self.assert_(Rd.ddesc.capabilities.deferred)
p = _ddesc(storage3 + 'Rd') if storage3 == 'dsk' else None
try:
Rc = blaze.eval(Rd, ddesc=p)
self.assert_(isinstance(Rc, blaze.Array))
npy_data = getattr(self, 'npy' + R)
assert_allclose(np.array(ddesc_as_py(Rc.ddesc)), npy_data)
if storage3 == 'dsk':
self.assert_(Rc.ddesc.capabilities.persistent)
else:
self.assert_(not Rc.ddesc.capabilities.persistent)
finally:
try:
if p is not None:
p.remove()
except:
pass # show the real error...
def test_3d_array(self):
# Simple 3D array
vals = [[[(i + 2 * j + 3 * k) for i in range(10)] for j in range(12)]
for k in range(14)]
a = ffi.new('unsigned int[14][12][10]', vals)
dd = data_descriptor_from_cffi(ffi, a, writable=True)
self.assertEqual(dd.dshape, dshape('14 * 12 * 10 * uint32'))
self.assertEqual(ddesc_as_py(dd), vals)
def test_complex(self):
types = ['complex64', 'complex128']
for type_ in types:
a = blaze.array(np.arange(3), dshape=type_)
dtype = to_numpy_dtype(a.dshape)
self.assertEqual(dtype, np.dtype(type_))
# ddesc_as_py does not support complexes yet..
self.assertEqual(ddesc_as_py(a.ddesc), [0, 1, 2])
def test_iterchunks_start(self):
dd = CSV_DDesc(self.csv_file, schema=self.schema)
vals = []
for el in dd.iterchunks(blen=2, start=1):
vals.extend(ddesc_as_py(el))
self.assertEqual(vals, [
{u'f0': u'k2', u'f1': u'v2', u'f2': 2, u'f3': True},
{u'f0': u'k3', u'f1': u'v3', u'f2': 3, u'f3': False}])
def test_from_dialect(self):
ddesc = CSV_DDesc(self.fname,
mode='r',
schema=csv_schema,
dialect='excel')
a = blaze.array(ddesc)
self.assert_(isinstance(a, blaze.Array))
self.assertEqual(ddesc_as_py(a.ddesc), csv_ldict)
def test_from_has_header(self):
ddesc = CSV_DDesc(self.fname,
mode='r',
schema=csv_schema,
has_header=False)
a = blaze.array(ddesc)
self.assert_(isinstance(a, blaze.Array))
self.assertEqual(ddesc_as_py(a.ddesc), csv_ldict)
def test_complex(self):
types = ['complex64', 'complex128']
for type_ in types:
a = blaze.array(np.arange(3), dshape=type_)
dtype = to_numpy_dtype(a.dshape)
self.assertEqual(dtype, np.dtype(type_))
# ddesc_as_py does not support complexes yet..
self.assertEqual(ddesc_as_py(a.ddesc), [0, 1, 2])
def test_2d_array(self):
a = (ctypes.c_double * 35 * 32)()
vals = [[2**i + j for i in range(35)] for j in range(32)]
for i in range(32):
for j in range(35):
a[i][j] = vals[i][j]
dd = data_descriptor_from_ctypes(a, writable=True)
self.assertEqual(dd.dshape, dshape('32 * 35 * float64'))
self.assertEqual(ddesc_as_py(dd), vals)
a = (ctypes.c_uint8 * 35 * 32)()
vals = [[i + j*2 for i in range(35)] for j in range(32)]
for i in range(32):
for j in range(35):
a[i][j] = vals[i][j]
dd = data_descriptor_from_ctypes(a, writable=True)
self.assertEqual(dd.dshape, dshape('32 * 35 * uint8'))
self.assertEqual(ddesc_as_py(dd), vals)
def test_iterchunks_start_stop(self):
dd = CSV_DDesc(self.csv_file, schema=self.schema)
vals = [ddesc_as_py(v) for v in dd.iterchunks(blen=1, start=1, stop=2)]
self.assertEqual(vals, [[{
u'f0': u'k2',
u'f1': u'v2',
u'f2': 2,
u'f3': True
}]])
def test_basic_object_type(self):
self.assertTrue(issubclass(CSV_DDesc, DDesc))
dd = CSV_DDesc(self.csv_file, schema=self.schema)
self.assertTrue(isinstance(dd, DDesc))
self.assertTrue(isinstance(dd.dshape.shape[0], datashape.Var))
self.assertEqual(ddesc_as_py(dd), [
{u'f0': u'k1', u'f1': u'v1', u'f2': 1, u'f3': False},
{u'f0': u'k2', u'f1': u'v2', u'f2': 2, u'f3': True},
{u'f0': u'k3', u'f1': u'v3', u'f2': 3, u'f3': False}])
def test_basic_object_type(self):
# For reasons that I ignore, the above decorator is not working for
# 2.6, so will disable the tests the hard way...
if not netCDF4_is_here: return
self.assertTrue(issubclass(netCDF4_DDesc, DDesc))
dd = netCDF4_DDesc(self.nc4_file, '/a1')
# Make sure the right type is returned
self.assertTrue(isinstance(dd, DDesc))
self.assertEqual(ddesc_as_py(dd), [[1, 2, 3], [4, 5, 6]])
