Viewing file:  test_defmatrix.py (11.04 KB) -rw-r--r--
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from numpy.testing import *
from numpy.core import *
from numpy import matrix, asmatrix, bmat
from numpy.matrixlib.defmatrix import matrix_power
from numpy.matrixlib import mat
import numpy as np
class TestCtor(TestCase):
def test_basic(self):
A = array([[1,2],[3,4]])
mA = matrix(A)
assert all(mA.A == A)
B = bmat("A,A;A,A")
C = bmat([[A,A], [A,A]])
D = array([[1,2,1,2],
[3,4,3,4],
[1,2,1,2],
[3,4,3,4]])
assert all(B.A == D)
assert all(C.A == D)
E = array([[5,6],[7,8]])
AEresult = matrix([[1,2,5,6],[3,4,7,8]])
assert all(bmat([A,E]) == AEresult)
vec = arange(5)
mvec = matrix(vec)
assert mvec.shape == (1,5)
def test_bmat_nondefault_str(self):
A = array([[1,2],[3,4]])
B = array([[5,6],[7,8]])
Aresult = array([[1,2,1,2],
[3,4,3,4],
[1,2,1,2],
[3,4,3,4]])
Bresult = array([[5,6,5,6],
[7,8,7,8],
[5,6,5,6],
[7,8,7,8]])
mixresult = array([[1,2,5,6],
[3,4,7,8],
[5,6,1,2],
[7,8,3,4]])
assert all(bmat("A,A;A,A") == Aresult)
assert all(bmat("A,A;A,A",ldict={'A':B}) == Aresult)
assert_raises(TypeError, bmat, "A,A;A,A",gdict={'A':B})
assert all(bmat("A,A;A,A",ldict={'A':A},gdict={'A':B}) == Aresult)
b2 = bmat("A,B;C,D",ldict={'A':A,'B':B},gdict={'C':B,'D':A})
assert all(b2 == mixresult)
class TestProperties(TestCase):
def test_sum(self):
"""Test whether matrix.sum(axis=1) preserves orientation.
Fails in NumPy <= 0.9.6.2127.
"""
M = matrix([[1,2,0,0],
[3,4,0,0],
[1,2,1,2],
[3,4,3,4]])
sum0 = matrix([8,12,4,6])
sum1 = matrix([3,7,6,14]).T
sumall = 30
assert_array_equal(sum0, M.sum(axis=0))
assert_array_equal(sum1, M.sum(axis=1))
assert sumall == M.sum()
def test_prod(self):
x = matrix([[1,2,3],[4,5,6]])
assert x.prod() == 720
assert all(x.prod(0) == matrix([[4,10,18]]))
assert all(x.prod(1) == matrix([[6],[120]]))
y = matrix([0,1,3])
assert y.prod() == 0
def test_max(self):
x = matrix([[1,2,3],[4,5,6]])
assert x.max() == 6
assert all(x.max(0) == matrix([[4,5,6]]))
assert all(x.max(1) == matrix([[3],[6]]))
def test_min(self):
x = matrix([[1,2,3],[4,5,6]])
assert x.min() == 1
assert all(x.min(0) == matrix([[1,2,3]]))
assert all(x.min(1) == matrix([[1],[4]]))
def test_ptp(self):
x = np.arange(4).reshape((2,2))
assert x.ptp() == 3
assert all(x.ptp(0) == array([2, 2]))
assert all(x.ptp(1) == array([1, 1]))
def test_var(self):
x = np.arange(9).reshape((3,3))
mx = x.view(np.matrix)
assert_equal(x.var(ddof=0), mx.var(ddof=0))
assert_equal(x.var(ddof=1), mx.var(ddof=1))
def test_basic(self):
import numpy.linalg as linalg
A = array([[1., 2.],
[3., 4.]])
mA = matrix(A)
assert allclose(linalg.inv(A), mA.I)
assert all(array(transpose(A) == mA.T))
assert all(array(transpose(A) == mA.H))
assert all(A == mA.A)
B = A + 2j*A
mB = matrix(B)
assert allclose(linalg.inv(B), mB.I)
assert all(array(transpose(B) == mB.T))
assert all(array(conjugate(transpose(B)) == mB.H))
def test_pinv(self):
x = matrix(arange(6).reshape(2,3))
xpinv = matrix([[-0.77777778, 0.27777778],
[-0.11111111, 0.11111111],
[ 0.55555556, -0.05555556]])
assert_almost_equal(x.I, xpinv)
def test_comparisons(self):
A = arange(100).reshape(10,10)
mA = matrix(A)
mB = matrix(A) + 0.1
assert all(mB == A+0.1)
assert all(mB == matrix(A+0.1))
assert not any(mB == matrix(A-0.1))
assert all(mA < mB)
assert all(mA <= mB)
assert all(mA <= mA)
assert not any(mA < mA)
assert not any(mB < mA)
assert all(mB >= mA)
assert all(mB >= mB)
assert not any(mB > mB)
assert all(mA == mA)
assert not any(mA == mB)
assert all(mB != mA)
assert not all(abs(mA) > 0)
assert all(abs(mB > 0))
def test_asmatrix(self):
A = arange(100).reshape(10,10)
mA = asmatrix(A)
A[0,0] = -10
assert A[0,0] == mA[0,0]
def test_noaxis(self):
A = matrix([[1,0],[0,1]])
assert A.sum() == matrix(2)
assert A.mean() == matrix(0.5)
def test_repr(self):
A = matrix([[1,0],[0,1]])
assert repr(A) == "matrix([[1, 0],\n [0, 1]])"
class TestCasting(TestCase):
def test_basic(self):
A = arange(100).reshape(10,10)
mA = matrix(A)
mB = mA.copy()
O = ones((10,10), float64) * 0.1
mB = mB + O
assert mB.dtype.type == float64
assert all(mA != mB)
assert all(mB == mA+0.1)
mC = mA.copy()
O = ones((10,10), complex128)
mC = mC * O
assert mC.dtype.type == complex128
assert all(mA != mB)
class TestAlgebra(TestCase):
def test_basic(self):
import numpy.linalg as linalg
A = array([[1., 2.],
[3., 4.]])
mA = matrix(A)
B = identity(2)
for i in xrange(6):
assert allclose((mA ** i).A, B)
B = dot(B, A)
Ainv = linalg.inv(A)
B = identity(2)
for i in xrange(6):
assert allclose((mA ** -i).A, B)
B = dot(B, Ainv)
assert allclose((mA * mA).A, dot(A, A))
assert allclose((mA + mA).A, (A + A))
assert allclose((3*mA).A, (3*A))
mA2 = matrix(A)
mA2 *= 3
assert allclose(mA2.A, 3*A)
def test_pow(self):
"""Test raising a matrix to an integer power works as expected."""
m = matrix("1. 2.; 3. 4.")
m2 = m.copy()
m2 **= 2
mi = m.copy()
mi **= -1
m4 = m2.copy()
m4 **= 2
assert_array_almost_equal(m2, m**2)
assert_array_almost_equal(m4, np.dot(m2, m2))
assert_array_almost_equal(np.dot(mi, m), np.eye(2))
def test_notimplemented(self):
'''Check that 'not implemented' operations produce a failure.'''
A = matrix([[1., 2.],
[3., 4.]])
# __rpow__
try:
1.0**A
except TypeError:
pass
else:
self.fail("matrix.__rpow__ doesn't raise a TypeError")
# __mul__ with something not a list, ndarray, tuple, or scalar
try:
A*object()
except TypeError:
pass
else:
self.fail("matrix.__mul__ with non-numeric object doesn't raise"
"a TypeError")
class TestMatrixReturn(TestCase):
def test_instance_methods(self):
a = matrix([1.0], dtype='f8')
methodargs = {
'astype' : ('intc',),
'clip' : (0.0, 1.0),
'compress' : ([1],),
'repeat' : (1,),
'reshape' : (1,),
'swapaxes' : (0,0)
}
excluded_methods = [
'argmin', 'choose', 'dump', 'dumps', 'fill', 'getfield',
'getA', 'getA1', 'item', 'nonzero', 'put', 'putmask', 'resize',
'searchsorted', 'setflags', 'setfield', 'sort', 'take',
'tofile', 'tolist', 'tostring', 'all', 'any', 'sum',
'argmax', 'argmin', 'min', 'max', 'mean', 'var', 'ptp',
'prod', 'std', 'ctypes', 'itemset'
]
for attrib in dir(a):
if attrib.startswith('_') or attrib in excluded_methods:
continue
f = eval('a.%s' % attrib)
if callable(f):
# reset contents of a
a.astype('f8')
a.fill(1.0)
if attrib in methodargs:
args = methodargs[attrib]
else:
args = ()
b = f(*args)
assert type(b) is matrix, "%s" % attrib
assert type(a.real) is matrix
assert type(a.imag) is matrix
c,d = matrix([0.0]).nonzero()
assert type(c) is matrix
assert type(d) is matrix
class TestIndexing(TestCase):
def test_basic(self):
x = asmatrix(zeros((3,2),float))
y = zeros((3,1),float)
y[:,0] = [0.8,0.2,0.3]
x[:,1] = y>0.5
assert_equal(x, [[0,1],[0,0],[0,0]])
class TestNewScalarIndexing(TestCase):
def setUp(self):
self.a = matrix([[1, 2],[3,4]])
def test_dimesions(self):
a = self.a
x = a[0]
assert_equal(x.ndim, 2)
def test_array_from_matrix_list(self):
a = self.a
x = array([a, a])
assert_equal(x.shape, [2,2,2])
def test_array_to_list(self):
a = self.a
assert_equal(a.tolist(),[[1, 2], [3, 4]])
def test_fancy_indexing(self):
a = self.a
x = a[1, [0,1,0]]
assert isinstance(x, matrix)
assert_equal(x, matrix([[3, 4, 3]]))
x = a[[1,0]]
assert isinstance(x, matrix)
assert_equal(x, matrix([[3, 4], [1, 2]]))
x = a[[[1],[0]],[[1,0],[0,1]]]
assert isinstance(x, matrix)
assert_equal(x, matrix([[4, 3], [1, 2]]))
def test_matrix_element(self):
x = matrix([[1,2,3],[4,5,6]])
assert_equal(x[0][0],matrix([[1,2,3]]))
assert_equal(x[0][0].shape,(1,3))
assert_equal(x[0].shape,(1,3))
assert_equal(x[:,0].shape,(2,1))
x = matrix(0)
assert_equal(x[0,0],0)
assert_equal(x[0],0)
assert_equal(x[:,0].shape,x.shape)
def test_scalar_indexing(self):
x = asmatrix(zeros((3,2),float))
assert_equal(x[0,0],x[0][0])
def test_row_column_indexing(self):
x = asmatrix(np.eye(2))
assert_array_equal(x[0,:],[[1,0]])
assert_array_equal(x[1,:],[[0,1]])
assert_array_equal(x[:,0],[[1],[0]])
assert_array_equal(x[:,1],[[0],[1]])
def test_boolean_indexing(self):
A = arange(6)
A.shape = (3,2)
x = asmatrix(A)
assert_array_equal(x[:,array([True,False])],x[:,0])
assert_array_equal(x[array([True,False,False]),:],x[0,:])
def test_list_indexing(self):
A = arange(6)
A.shape = (3,2)
x = asmatrix(A)
assert_array_equal(x[:,[1,0]],x[:,::-1])
assert_array_equal(x[[2,1,0],:],x[::-1,:])
class TestPower(TestCase):
def test_returntype(self):
a = array([[0,1],[0,0]])
assert type(matrix_power(a, 2)) is ndarray
a = mat(a)
assert type(matrix_power(a, 2)) is matrix
def test_list(self):
assert_array_equal(matrix_power([[0, 1], [0, 0]], 2), [[0, 0], [0, 0]])
if __name__ == "__main__":
run_module_suite()
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