test_simplification.py 2.59 KB
Newer Older
1
2
3
4
5
6
7
8
9
10
11
12
13
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.
#
Martin Reinecke's avatar
Martin Reinecke committed
14
# Copyright(C) 2013-2019 Max-Planck-Society
15
#
Martin Reinecke's avatar
Martin Reinecke committed
16
# NIFTy is being developed at the Max-Planck-Institut fuer Astrophysik.
17

18
from numpy.testing import assert_allclose, assert_raises
19

Martin Reinecke's avatar
Martin Reinecke committed
20
import nifty7 as ift
21
from nifty7.operators.simplify_for_const import ConstantOperator
22
23


Martin Reinecke's avatar
Martin Reinecke committed
24
25
def test_simplification():
    dom = {"a": ift.RGSpace(10)}
Martin Reinecke's avatar
Martin Reinecke committed
26
    f1 = ift.full(dom, 2.)
Martin Reinecke's avatar
Martin Reinecke committed
27
28
    op = ift.FFTOperator(f1.domain["a"]).ducktape("a")
    _, op2 = op.simplify_for_constant_input(f1)
29
    ift.myassert(isinstance(op2, ConstantOperator))
30
    assert_allclose(op(f1).val, op2.force(f1).val)
31

Martin Reinecke's avatar
Martin Reinecke committed
32
    dom = {"a": ift.RGSpace(10), "b": ift.RGSpace(5)}
Martin Reinecke's avatar
Martin Reinecke committed
33
    f1 = ift.full(dom, 2.)
Martin Reinecke's avatar
Martin Reinecke committed
34
    pdom = {"a": ift.RGSpace(10)}
Martin Reinecke's avatar
Martin Reinecke committed
35
    f2 = ift.full(pdom, 2.)
Martin Reinecke's avatar
Martin Reinecke committed
36
37
38
39
40
    o1 = ift.FFTOperator(f1.domain["a"])
    o2 = ift.FFTOperator(f1.domain["b"])
    op = (o1.ducktape("a").ducktape_left("a") +
          o2.ducktape("b").ducktape_left("b"))
    _, op2 = op.simplify_for_constant_input(f2)
41
42
    assert_allclose(op(f1)["a"].val, op2.force(f1)["a"].val)
    assert_allclose(op(f1)["b"].val, op2.force(f1)["b"].val)
43
    # FIXME Add test for ChainOperator._simplify_for_constant_input_nontrivial()
Philipp Arras's avatar
Philipp Arras committed
44
45
46


def test_modify_sample_domain():
Philipp Frank's avatar
Philipp Frank committed
47
    func = ift.minimization.kl_energies._modify_sample_domain
Philipp Arras's avatar
Philipp Arras committed
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
    dom0 = ift.RGSpace(1)
    dom1 = ift.RGSpace(2)
    field = ift.full(dom0, 1.)
    ift.extra.assert_equal(func(field, dom0), field)

    mdom0 = ift.makeDomain({'a': dom0, 'b': dom1})
    mdom1 = ift.makeDomain({'a': dom0})
    mfield0 = ift.full(mdom0, 1.)
    mfield1 = ift.full(mdom1, 1.)
    mfield01 = ift.MultiField.from_dict({'a': ift.full(dom0, 1.),
                                         'b': ift.full(dom1, 0.)})

    ift.extra.assert_equal(func(mfield0, mdom0), mfield0)
    ift.extra.assert_equal(func(mfield0, mdom1), mfield1)
    ift.extra.assert_equal(func(mfield1, mdom0), mfield01)
    ift.extra.assert_equal(func(mfield1, mdom1), mfield1)

    with assert_raises(TypeError):
        func(mfield0, dom0)
    with assert_raises(TypeError):
        func(field, dom1)