/usr/lib/python2.7/dist-packages/PySPH-1.0a4.dev0-py2.7-linux-x86_64.egg/pysph/base/tests/test_carray.py is in python-pysph 0~20160514.git91867dc-4build1.
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Tests for the carray module.
Only the LongArray is tested. As the code in carray.pyx is auto-generated, tests
for one class hould suffice.
"""
# standard imports
try:
# This is for Python-2.6.x
import unittest2 as unittest
except ImportError:
import unittest
import numpy
# local imports
from pyzoltan.core.carray import LongArray, py_aligned
class TestAligned(unittest.TestCase):
def test_aligned_to_64_bits(self):
self.assertEqual(py_aligned(12, 1), 64)
self.assertEqual(py_aligned(1, 1), 64)
self.assertEqual(py_aligned(64, 1), 64)
self.assertEqual(py_aligned(120, 1), 128)
self.assertEqual(py_aligned(1, 2), 32)
self.assertEqual(py_aligned(12, 2), 32)
self.assertEqual(py_aligned(32, 2), 32)
self.assertEqual(py_aligned(33, 2), 64)
self.assertEqual(py_aligned(1, 3), 64)
self.assertEqual(py_aligned(65, 3), 256)
self.assertEqual(py_aligned(1, 4), 16)
self.assertEqual(py_aligned(16, 4), 16)
self.assertEqual(py_aligned(21, 4), 32)
self.assertEqual(py_aligned(1, 5), 64)
self.assertEqual(py_aligned(13, 5), 128)
self.assertEqual(py_aligned(1, 8), 8)
self.assertEqual(py_aligned(8, 8), 8)
self.assertEqual(py_aligned(11, 8), 16)
class TestLongArray(unittest.TestCase):
"""
Tests for the LongArray class.
"""
def test_constructor(self):
"""
Test the constructor.
"""
l = LongArray(10)
self.assertEqual(l.length, 10)
self.assertEqual(l.alloc, 10)
self.assertEqual(len(l.get_npy_array()), 10)
l = LongArray()
self.assertEqual(l.length, 0)
self.assertEqual(l.alloc, 16)
self.assertEqual(len(l.get_npy_array()), 0)
def test_get_set_indexing(self):
"""
Test get/set and [] operator.
"""
l = LongArray(10)
l.set(0, 10)
l.set(9, 1)
self.assertEqual(l.get(0), 10)
self.assertEqual(l.get(9), 1)
l[9] = 2
self.assertEqual(l[9], 2)
def test_append(self):
"""
Test the append function.
"""
l = LongArray(0)
l.append(1)
l.append(2)
l.append(3)
self.assertEqual(l.length, 3)
self.assertEqual(l[0], 1)
self.assertEqual(l[1], 2)
self.assertEqual(l[2], 3)
def test_reserve(self):
"""
Tests the reserve function.
"""
l = LongArray(0)
l.reserve(10)
self.assertEqual(l.alloc, 16)
self.assertEqual(l.length, 0)
self.assertEqual(len(l.get_npy_array()), 0)
l.reserve(20)
self.assertEqual(l.alloc, 20)
self.assertEqual(l.length, 0)
self.assertEqual(len(l.get_npy_array()), 0)
def test_resize(self):
"""
Tests the resize function.
"""
l = LongArray(0)
l.resize(20)
self.assertEqual(l.length, 20)
self.assertEqual(len(l.get_npy_array()), 20)
self.assertEqual(l.alloc >= l.length, True)
def test_get_npy_array(self):
"""
Tests the get_npy_array array.
"""
l = LongArray(3)
l[0] = 1
l[1] = 2
l[2] = 3
nparray = l.get_npy_array()
self.assertEqual(len(nparray), 3)
for i in range(3):
self.assertEqual(nparray[0], l[0])
def test_set_data(self):
"""
Tests the set_data function.
"""
l = LongArray(5)
np = numpy.arange(5)
l.set_data(np)
for i in range(5):
self.assertEqual(l[i], np[i])
self.assertRaises(ValueError, l.set_data, numpy.arange(10))
def test_squeeze(self):
"""
Tests the squeeze function.
"""
l = LongArray(5)
l.append(4)
self.assertEqual(l.alloc > l.length, True)
l.squeeze()
self.assertEqual(l.length, 6)
self.assertEqual(l.alloc >= l.length, True)
self.assertEqual(len(l.get_npy_array()), 6)
def test_squeeze_for_zero_length_array(self):
# Given.
l = LongArray()
# When
l.squeeze()
# Then
self.assertEqual(l.length, 0)
self.assertEqual(len(l.get_npy_array()), 0)
self.assertEqual(l.alloc >= l.length, True)
del l # This should work and not segfault.
def test_reset(self):
"""
Tests the reset function.
"""
l = LongArray(5)
l.reset()
self.assertEqual(l.length, 0)
self.assertEqual(l.alloc, 5)
self.assertEqual(len(l.get_npy_array()), 0)
def test_extend(self):
"""
Tests the extend function.
"""
l1 = LongArray(5)
for i in range(5):
l1[i] = i
l2 = LongArray(5)
for i in range(5):
l2[i] = 5 + i
l1.extend(l2.get_npy_array())
self.assertEqual(l1.length, 10)
self.assertEqual(numpy.allclose(l1.get_npy_array(), numpy.arange(10)), True)
def test_remove(self):
"""
Tests the remove function.
"""
l1 = LongArray(10)
l1.set_data(numpy.arange(10))
rem = [0, 4, 3]
l1.remove(numpy.array(rem, dtype=numpy.int))
self.assertEqual(l1.length, 7)
self.assertEqual(numpy.allclose([7, 1, 2, 8, 9, 5, 6],
l1.get_npy_array()), True)
l1.remove(numpy.array(rem, dtype=numpy.int))
self.assertEqual(l1.length, 4)
self.assertEqual(numpy.allclose([6, 1, 2, 5], l1.get_npy_array()), True)
rem = [0, 1, 3]
l1.remove(numpy.array(rem, dtype=numpy.int))
self.assertEqual(l1.length, 1)
self.assertEqual(numpy.allclose([2], l1.get_npy_array()), True)
l1.remove(numpy.array([0], dtype=numpy.int))
self.assertEqual(l1.length, 0)
self.assertEqual(len(l1.get_npy_array()), 0)
def test_align_array(self):
"""
Test the align_array function.
"""
l1 = LongArray(10)
l1.set_data(numpy.arange(10))
new_indices = LongArray(10)
new_indices.set_data(numpy.asarray([1, 5, 3, 2, 4, 7, 8, 6, 9, 0]))
l1.align_array(new_indices)
self.assertEqual(numpy.allclose([1, 5, 3, 2, 4, 7, 8, 6, 9, 0],
l1.get_npy_array()), True)
def test_copy_subset(self):
"""
Tests the copy_subset function.
"""
l1 = LongArray(10)
l1.set_data(numpy.arange(10))
l2 = LongArray(4)
l2[0] = 4
l2[1] = 3
l2[2] = 2
l2[3] = 1
# a valid copy.
l1.copy_subset(l2, 5, 9)
self.assertEqual(numpy.allclose([0, 1, 2, 3, 4, 4, 3, 2, 1, 9],
l1.get_npy_array()), True)
# try to copy different sized arrays without any index specification.
l1.set_data(numpy.arange(10))
# copy to the last k values of source array.
l1.copy_subset(l2, start_index=6)
self.assertEqual(numpy.allclose([0, 1, 2, 3, 4, 5, 4, 3, 2, 1],
l1.get_npy_array()), True)
l1.set_data(numpy.arange(10))
l1.copy_subset(l2, start_index=7)
self.assertEqual(numpy.allclose([0, 1, 2, 3, 4, 5, 6, 4, 3, 2],
l1.get_npy_array()), True)
# some invalid operations.
l1.set_data(numpy.arange(10))
self.assertRaises(ValueError, l1.copy_subset, l2, -1, 1)
self.assertRaises(ValueError, l1.copy_subset, l2, 3, 2)
self.assertRaises(ValueError, l1.copy_subset, l2, 0, 11)
self.assertRaises(ValueError, l1.copy_subset, l2, 10, 20)
self.assertRaises(ValueError, l1.copy_subset, l2, -1, -1)
def test_update_min_max(self):
"""
Tests the update_min_max function.
"""
l1 = LongArray(10)
l1.set_data(numpy.arange(10))
l1.update_min_max()
self.assertEqual(l1.minimum, 0)
self.assertEqual(l1.maximum, 9)
l1[9] = -1
l1[0] = -20
l1[4] = 200
l1.update_min_max()
self.assertEqual(l1.minimum, -20)
self.assertEqual(l1.maximum, 200)
def test_pickling(self):
"""
Tests the __reduce__ and __setstate__ functions.
"""
l1 = LongArray(10)
l1.set_data(numpy.arange(10))
import pickle
l1_dump = pickle.dumps(l1)
l1_load = pickle.loads(l1_dump)
self.assertEqual((l1_load.get_npy_array() == l1.get_npy_array()).all(), True)
def test_set_view(self):
# Given
src = LongArray()
src.extend(numpy.arange(5))
# When.
view = LongArray()
view.set_view(src, 1, 4)
# Then.
self.assertEqual(view.length, 3)
expect = list(range(1, 4))
self.assertListEqual(view.get_npy_array().tolist(), expect)
def test_set_view_for_empty_array(self):
# Given
src = LongArray()
src.extend(numpy.arange(5))
# When.
view = LongArray()
view.set_view(src, 1, 1)
# Then.
self.assertEqual(view.length, 0)
expect = []
self.assertListEqual(view.get_npy_array().tolist(), expect)
def test_set_view_stores_reference_to_parent(self):
# Given
src = LongArray()
src.extend(numpy.arange(5))
# When
view = LongArray()
view.set_view(src, 1, 4)
del src
# Then.
self.assertEqual(view.length, 3)
expect = list(range(1, 4))
self.assertListEqual(view.get_npy_array().tolist(), expect)
def test_reset_works_after_set_view(self):
# Given
src = LongArray()
src.extend(numpy.arange(5))
view = LongArray()
view.set_view(src, 1, 3)
# When.
view.reset()
view.extend(numpy.arange(3)*10)
# Then.
self.assertEqual(view.length, 3)
expect = (numpy.arange(3)*10).tolist()
self.assertListEqual(view.get_npy_array().tolist(), expect)
if __name__ == '__main__':
unittest.main()
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