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from numpy.testing import *
from numpy.lib import *
from numpy.core import *
from numpy import matrix, asmatrix
class TestApplyAlongAxis(TestCase):
def test_simple(self):
a = ones((20,10),'d')
assert_array_equal(apply_along_axis(len,0,a),len(a)*ones(shape(a)[1]))
def test_simple101(self,level=11):
a = ones((10,101),'d')
assert_array_equal(apply_along_axis(len,0,a),len(a)*ones(shape(a)[1]))
def test_3d(self):
a = arange(27).reshape((3,3,3))
assert_array_equal(apply_along_axis(sum,0,a),
[[27,30,33],[36,39,42],[45,48,51]])
class TestApplyOverAxes(TestCase):
def test_simple(self):
a = arange(24).reshape(2,3,4)
aoa_a = apply_over_axes(sum, a, [0,2])
assert_array_equal(aoa_a, array([[[60],[92],[124]]]))
class TestArraySplit(TestCase):
def test_integer_0_split(self):
a = arange(10)
try:
res = array_split(a,0)
assert(0) # it should have thrown a value error
except ValueError:
pass
def test_integer_split(self):
a = arange(10)
res = array_split(a,1)
desired = [arange(10)]
compare_results(res,desired)
res = array_split(a,2)
desired = [arange(5),arange(5,10)]
compare_results(res,desired)
res = array_split(a,3)
desired = [arange(4),arange(4,7),arange(7,10)]
compare_results(res,desired)
res = array_split(a,4)
desired = [arange(3),arange(3,6),arange(6,8),arange(8,10)]
compare_results(res,desired)
res = array_split(a,5)
desired = [arange(2),arange(2,4),arange(4,6),arange(6,8),arange(8,10)]
compare_results(res,desired)
res = array_split(a,6)
desired = [arange(2),arange(2,4),arange(4,6),arange(6,8),arange(8,9),
arange(9,10)]
compare_results(res,desired)
res = array_split(a,7)
desired = [arange(2),arange(2,4),arange(4,6),arange(6,7),arange(7,8),
arange(8,9), arange(9,10)]
compare_results(res,desired)
res = array_split(a,8)
desired = [arange(2),arange(2,4),arange(4,5),arange(5,6),arange(6,7),
arange(7,8), arange(8,9), arange(9,10)]
compare_results(res,desired)
res = array_split(a,9)
desired = [arange(2),arange(2,3),arange(3,4),arange(4,5),arange(5,6),
arange(6,7), arange(7,8), arange(8,9), arange(9,10)]
compare_results(res,desired)
res = array_split(a,10)
desired = [arange(1),arange(1,2),arange(2,3),arange(3,4),
arange(4,5),arange(5,6), arange(6,7), arange(7,8),
arange(8,9), arange(9,10)]
compare_results(res,desired)
res = array_split(a,11)
desired = [arange(1),arange(1,2),arange(2,3),arange(3,4),
arange(4,5),arange(5,6), arange(6,7), arange(7,8),
arange(8,9), arange(9,10),array([])]
compare_results(res,desired)
def test_integer_split_2D_rows(self):
a = array([arange(10),arange(10)])
res = array_split(a,3,axis=0)
desired = [array([arange(10)]),array([arange(10)]),array([])]
compare_results(res,desired)
def test_integer_split_2D_cols(self):
a = array([arange(10),arange(10)])
res = array_split(a,3,axis=-1)
desired = [array([arange(4),arange(4)]),
array([arange(4,7),arange(4,7)]),
array([arange(7,10),arange(7,10)])]
compare_results(res,desired)
def test_integer_split_2D_default(self):
""" This will fail if we change default axis
"""
a = array([arange(10),arange(10)])
res = array_split(a,3)
desired = [array([arange(10)]),array([arange(10)]),array([])]
compare_results(res,desired)
#perhaps should check higher dimensions
def test_index_split_simple(self):
a = arange(10)
indices = [1,5,7]
res = array_split(a,indices,axis=-1)
desired = [arange(0,1),arange(1,5),arange(5,7),arange(7,10)]
compare_results(res,desired)
def test_index_split_low_bound(self):
a = arange(10)
indices = [0,5,7]
res = array_split(a,indices,axis=-1)
desired = [array([]),arange(0,5),arange(5,7),arange(7,10)]
compare_results(res,desired)
def test_index_split_high_bound(self):
a = arange(10)
indices = [0,5,7,10,12]
res = array_split(a,indices,axis=-1)
desired = [array([]),arange(0,5),arange(5,7),arange(7,10),
array([]),array([])]
compare_results(res,desired)
class TestSplit(TestCase):
"""* This function is essentially the same as array_split,
except that it test if splitting will result in an
equal split. Only test for this case.
*"""
def test_equal_split(self):
a = arange(10)
res = split(a,2)
desired = [arange(5),arange(5,10)]
compare_results(res,desired)
def test_unequal_split(self):
a = arange(10)
try:
res = split(a,3)
assert(0) # should raise an error
except ValueError:
pass
class TestDstack(TestCase):
def test_0D_array(self):
a = array(1); b = array(2);
res=dstack([a,b])
desired = array([[[1,2]]])
assert_array_equal(res,desired)
def test_1D_array(self):
a = array([1]); b = array([2]);
res=dstack([a,b])
desired = array([[[1,2]]])
assert_array_equal(res,desired)
def test_2D_array(self):
a = array([[1],[2]]); b = array([[1],[2]]);
res=dstack([a,b])
desired = array([[[1,1]],[[2,2,]]])
assert_array_equal(res,desired)
def test_2D_array2(self):
a = array([1,2]); b = array([1,2]);
res=dstack([a,b])
desired = array([[[1,1],[2,2]]])
assert_array_equal(res,desired)
""" array_split has more comprehensive test of splitting.
only do simple test on hsplit, vsplit, and dsplit
"""
class TestHsplit(TestCase):
""" only testing for integer splits.
"""
def test_0D_array(self):
a= array(1)
try:
hsplit(a,2)
assert(0)
except ValueError:
pass
def test_1D_array(self):
a= array([1,2,3,4])
res = hsplit(a,2)
desired = [array([1,2]),array([3,4])]
compare_results(res,desired)
def test_2D_array(self):
a= array([[1,2,3,4],
[1,2,3,4]])
res = hsplit(a,2)
desired = [array([[1,2],[1,2]]),array([[3,4],[3,4]])]
compare_results(res,desired)
class TestVsplit(TestCase):
""" only testing for integer splits.
"""
def test_1D_array(self):
a= array([1,2,3,4])
try:
vsplit(a,2)
assert(0)
except ValueError:
pass
def test_2D_array(self):
a= array([[1,2,3,4],
[1,2,3,4]])
res = vsplit(a,2)
desired = [array([[1,2,3,4]]),array([[1,2,3,4]])]
compare_results(res,desired)
class TestDsplit(TestCase):
""" only testing for integer splits.
"""
def test_2D_array(self):
a= array([[1,2,3,4],
[1,2,3,4]])
try:
dsplit(a,2)
assert(0)
except ValueError:
pass
def test_3D_array(self):
a= array([[[1,2,3,4],
[1,2,3,4]],
[[1,2,3,4],
[1,2,3,4]]])
res = dsplit(a,2)
desired = [array([[[1,2],[1,2]],[[1,2],[1,2]]]),
array([[[3,4],[3,4]],[[3,4],[3,4]]])]
compare_results(res,desired)
class TestSqueeze(TestCase):
def test_basic(self):
a = rand(20,10,10,1,1)
b = rand(20,1,10,1,20)
c = rand(1,1,20,10)
assert_array_equal(squeeze(a),reshape(a,(20,10,10)))
assert_array_equal(squeeze(b),reshape(b,(20,10,20)))
assert_array_equal(squeeze(c),reshape(c,(20,10)))
class TestKron(TestCase):
def test_return_type(self):
a = ones([2,2])
m = asmatrix(a)
assert_equal(type(kron(a,a)), ndarray)
assert_equal(type(kron(m,m)), matrix)
assert_equal(type(kron(a,m)), matrix)
assert_equal(type(kron(m,a)), matrix)
class myarray(ndarray):
__array_priority__ = 0.0
ma = myarray(a.shape, a.dtype, a.data)
assert_equal(type(kron(a,a)), ndarray)
assert_equal(type(kron(ma,ma)), myarray)
assert_equal(type(kron(a,ma)), ndarray)
assert_equal(type(kron(ma,a)), myarray)
class TestTile(TestCase):
def test_basic(self):
a = array([0,1,2])
b = [[1,2],[3,4]]
assert_equal(tile(a,2), [0,1,2,0,1,2])
assert_equal(tile(a,(2,2)), [[0,1,2,0,1,2],[0,1,2,0,1,2]])
assert_equal(tile(a,(1,2)), [[0,1,2,0,1,2]])
assert_equal(tile(b, 2), [[1,2,1,2],[3,4,3,4]])
assert_equal(tile(b,(2,1)),[[1,2],[3,4],[1,2],[3,4]])
assert_equal(tile(b,(2,2)),[[1,2,1,2],[3,4,3,4],
[1,2,1,2],[3,4,3,4]])
def test_empty(self):
a = array([[[]]])
d = tile(a,(3,2,5)).shape
assert_equal(d,(3,2,0))
def test_kroncompare(self):
import numpy.random as nr
reps=[(2,),(1,2),(2,1),(2,2),(2,3,2),(3,2)]
shape=[(3,),(2,3),(3,4,3),(3,2,3),(4,3,2,4),(2,2)]
for s in shape:
b = nr.randint(0,10,size=s)
for r in reps:
a = ones(r, b.dtype)
large = tile(b, r)
klarge = kron(a, b)
assert_equal(large, klarge)
# Utility
def compare_results(res,desired):
for i in range(len(desired)):
assert_array_equal(res[i],desired[i])
if __name__ == "__main__":
run_module_suite()
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