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from dlib import array
try:
import cPickle as pickle # Use cPickle on Python 2.7
except ImportError:
import pickle
try:
from types import FloatType
except ImportError:
FloatType = float
from pytest import raises
def test_array_init_with_number():
a = array(5)
assert len(a) == 5
for i in range(5):
assert a[i] == 0
assert type(a[i]) == FloatType
def test_array_init_with_negative_number():
with raises(Exception):
array(-5)
def test_array_init_with_zero():
a = array(0)
assert len(a) == 0
def test_array_init_with_list():
a = array([0, 1, 2, 3, 4])
assert len(a) == 5
for idx, val in enumerate(a):
assert idx == val
assert type(val) == FloatType
def test_array_init_with_empty_list():
a = array([])
assert len(a) == 0
def test_array_init_without_argument():
a = array()
assert len(a) == 0
def test_array_init_with_tuple():
a = array((0, 1, 2, 3, 4))
for idx, val in enumerate(a):
assert idx == val
assert type(val) == FloatType
def test_array_serialization_empty():
a = array()
# cPickle with protocol 2 required for Python 2.7
# see http://pybind11.readthedocs.io/en/stable/advanced/classes.html#custom-constructors
ser = pickle.dumps(a, 2)
deser = pickle.loads(ser)
assert a == deser
def test_array_serialization():
a = array([0, 1, 2, 3, 4])
ser = pickle.dumps(a, 2)
deser = pickle.loads(ser)
assert a == deser
def test_array_extend():
a = array()
a.extend([0, 1, 2, 3, 4])
assert len(a) == 5
for idx, val in enumerate(a):
assert idx == val
assert type(val) == FloatType
def test_array_string_representations_empty():
a = array()
assert str(a) == ""
assert repr(a) == "array[]"
def test_array_string_representations():
a = array([1, 2, 3])
assert str(a) == "1\n2\n3"
assert repr(a) == "array[1, 2, 3]"
def test_array_clear():
a = array(10)
a.clear()
assert len(a) == 0
def test_array_resize():
a = array(10)
a.resize(100)
assert len(a) == 100
for i in range(100):
assert a[i] == 0