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#################################### IMPORTS ###################################
is_pygame_pkg = __name__.startswith('pygame.tests.')
import tempfile, sys, pygame, time, os
################################################################################
# Python 3.x compatibility
try:
xrange_ = xrange
except NameError:
xrange_ = range
try:
raw_input_ = raw_input
except NameError:
raw_input_ = input
def geterror():
return sys.exc_info()[1]
################################################################################
this_dir = os.path.dirname(os.path.abspath(__file__))
trunk_dir = os.path.split(os.path.split(this_dir)[0])[0]
if is_pygame_pkg:
test_module = 'tests'
else:
test_module = 'test'
def trunk_relative_path(relative):
return os.path.normpath(os.path.join(trunk_dir, relative))
def fixture_path(path):
return trunk_relative_path(os.path.join(test_module, 'fixtures', path))
def example_path(path):
return trunk_relative_path(os.path.join('examples', path))
sys.path.insert(0, trunk_relative_path('.'))
################################## TEMP FILES ##################################
def get_tmp_dir():
return tempfile.mkdtemp()
################################################################################
def question(q):
return raw_input_('%s ' % q.rstrip(' ')).lower().strip() == 'y'
def prompt(p):
return raw_input_('%s (and press enter to continue) ' % p.rstrip(' '))
#################################### HELPERS ###################################
def rgba_between(value, minimum=0, maximum=255):
if value < minimum: return minimum
elif value > maximum: return maximum
else: return value
def combinations(seqs):
"""
Recipe 496807 from ActiveState Python CookBook
Non recursive technique for getting all possible combinations of a sequence
of sequences.
"""
r=[[]]
for x in seqs:
r = [ i + [y] for y in x for i in r ]
return r
def gradient(width, height):
"""
Yields a pt and corresponding RGBA tuple, for every (width, height) combo.
Useful for generating gradients.
Actual gradient may be changed, no tests rely on specific values.
Used in transform.rotate lossless tests to generate a fixture.
"""
for l in xrange_(width):
for t in xrange_(height):
yield (l,t), tuple(map(rgba_between, (l, t, l, l+t)))
def unordered_equality(seq1, seq2):
"""
Tests to see if the contents of one sequence is contained in the other
and that they are of the same length.
"""
if len(seq1) != len(seq2):
return False
# if isinstance(seq1, dict) and isinstance(seq2, dict):
# seq1 = seq1.items()
# seq2 = seq2.items()
for val in seq1:
if val not in seq2:
return False
return True
def rect_area_pts(rect):
for l in xrange_(rect.left, rect.right):
for t in xrange_(rect.top, rect.bottom):
yield l, t
def rect_perimeter_pts(rect):
"""
Returns pts ((L, T) tuples) encompassing the perimeter of a rect.
The order is clockwise:
topleft to topright
topright to bottomright
bottomright to bottomleft
bottomleft to topleft
Duplicate pts are not returned
"""
clock_wise_from_top_left = (
[(l, rect.top) for l in xrange_(rect.left, rect.right) ],
[(rect.right -1, t) for t in xrange_(rect.top + 1, rect.bottom) ],
[(l, rect.bottom -1) for l in xrange_(rect.right -2, rect.left -1, -1)],
[(rect.left, t) for t in xrange_(rect.bottom -2, rect.top, -1)]
)
for line in clock_wise_from_top_left:
for pt in line: yield pt
def rect_outer_bounds(rect):
"""
Returns topleft outerbound if possible and then the other pts, that are
"exclusive" bounds of the rect
?------O
|RECT| ?|0)uterbound
|----|
O O
"""
return (
(rect.left is not 0 and [(rect.left-1, rect.top)] or []) +
[ rect.topright,
rect.bottomleft,
rect.bottomright]
)
def import_submodule(module):
m = __import__(module)
for n in module.split('.')[1:]:
m = getattr(m, n)
return m
def test():
"""
Lightweight test for helpers
"""
r = pygame.Rect(0, 0, 10, 10)
assert (
rect_outer_bounds ( r ) == [(10, 0), # tr
( 0, 10), # bl
(10, 10)] # br
)
assert len(list(rect_area_pts(r))) == 100
r = pygame.Rect(0, 0, 3, 3)
assert list(rect_perimeter_pts(r)) == [
(0, 0), (1, 0), (2, 0), # tl -> tr
(2, 1), (2, 2), # tr -> br
(1, 2), (0, 2), # br -> bl
(0, 1) # bl -> tl
]
print ('Tests: OK')
################################################################################
|
