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import math
import os
import sys
import tempfile
import shutil
import platform
import pytest
import cairo
pytest.importorskip("hypothesis")
from hypothesis import given, strategies, assume, settings
from hypothesis.strategies import floats, integers
from .hypothesis_fspaths import fspaths
if "CI" in os.environ:
# CI can be slow, so be patient
# Also we can run more tests there
settings.register_profile(
"ci",
deadline=settings.default.deadline * 10,
max_examples=settings.default.max_examples * 5)
settings.load_profile("ci")
@pytest.fixture(scope='module')
def tempdir_path():
dir_ = tempfile.mkdtemp()
try:
yield dir_
finally:
shutil.rmtree(dir_)
def _to_temp_path(tempdir_path, p):
basename = os.path.basename(p)
if isinstance(basename, bytes):
tempdir_path = os.fsencode(tempdir_path)
res = os.path.join(tempdir_path, basename)
if not isinstance(p, (str, bytes)):
res = type(p)(res)
return res
def cairo_ver():
return tuple(map(int, cairo.cairo_version_string().split(".")))
@pytest.mark.skipif(
platform.python_implementation() == "PyPy" and sys.pypy_version_info < (7, 3, 0),
reason="PyPy bugs")
@given(path=fspaths())
def test_fspaths(tempdir_path, path):
p = _to_temp_path(tempdir_path, path)
assert not os.listdir(tempdir_path)
# filter out "."
if os.path.exists(p):
return
if cairo_ver() >= (1, 15, 10):
def path_encode(p):
return p.encode("utf-8")
else:
def path_encode(p):
new = temp.encode("mbcs")
if new.decode("mbcs") != p:
raise ValueError
return new
# cairo up to 1.15.8 uses fopen, which only supports ANSI paths under
# Windows. 1.15.10+ uses utf-8 like glib.
is_valid = True
if os.name == "nt":
temp = os.path.join(p)
if isinstance(temp, bytes):
temp = os.fsdecode(temp)
if isinstance(temp, str):
try:
path_encode(temp)
except ValueError:
is_valid = False
surface = cairo.ImageSurface(cairo.FORMAT_ARGB32, 10, 10)
try:
surface.write_to_png(p)
except (TypeError, ValueError):
assert not is_valid
assert not os.path.exists(p)
except cairo.Error:
# Under Python 2 we can't produce utf-8 without surrogates
# and cairo 1.15.10+ errors out in that case.
# And for some reason writing to "\x01" fails
assert is_valid
assert not os.path.exists(p)
else:
assert is_valid
assert os.path.exists(p), os.listdir(tempdir_path)
os.unlink(p)
@given(strategies.floats(), strategies.floats())
def test_surface_set_device_scale(x_scale, y_scale):
assume(not any(math.isnan(v) for v in [x_scale, y_scale]))
surface = cairo.ImageSurface(cairo.FORMAT_ARGB32, 10, 10)
try:
surface.set_device_scale(x_scale, y_scale)
except cairo.Error as e:
assert e.status == cairo.Status.INVALID_MATRIX
else:
assert surface.get_device_scale() == (x_scale, y_scale)
@given(strategies.floats(), strategies.floats())
def test_surface_set_device_offset(x_offset, y_offset):
assume(not any(math.isnan(v) for v in [x_offset, y_offset]))
surface = cairo.ImageSurface(cairo.FORMAT_ARGB32, 10, 10)
surface.set_device_offset(x_offset, y_offset)
@given(strategies.floats(), strategies.floats(), strategies.floats(),
strategies.floats())
def test_surface_create_for_rectangle(x, y, w, h):
assume(not any(math.isnan(v) for v in [x, y, w, h]))
surface = cairo.ImageSurface(cairo.FORMAT_ARGB32, 100, 100)
try:
surface.create_for_rectangle(x, y, w, h)
except cairo.Error as e:
assert e.status == cairo.Status.INVALID_SIZE
@given(integers(), floats(allow_nan=False), floats(allow_nan=False))
def test_glyph(index, x, y):
try:
g = cairo.Glyph(index, x, y)
except OverflowError:
pass
else:
assert g.index == index
assert g.x == x
assert g.y == y
@given(floats(allow_nan=False), floats(allow_nan=False),
floats(allow_nan=False), floats(allow_nan=False))
def test_rectangle(x, y, width, height):
r = cairo.Rectangle(x, y, width, height)
assert r.x == x
assert r.y == y
assert r.width == width
assert r.height == height
@given(integers(), integers())
def test_text_cluster(num_bytes, num_glyphs):
try:
tc = cairo.TextCluster(num_bytes, num_glyphs)
except OverflowError:
pass
else:
assert tc.num_bytes == num_bytes
assert tc.num_glyphs == num_glyphs
@given(floats(allow_nan=False), floats(allow_nan=False),
floats(allow_nan=False), floats(allow_nan=False),
floats(allow_nan=False), floats(allow_nan=False))
def test_text_extents(x_bearing, y_bearing, width, height, x_advance,
y_advance):
te = cairo.TextExtents(x_bearing, y_bearing, width, height, x_advance,
y_advance)
assert te.x_bearing == x_bearing
assert te.y_bearing == y_bearing
assert te.width == width
assert te.height == height
assert te.x_advance == x_advance
assert te.y_advance == y_advance
@given(integers(), integers(), integers(), integers())
def test_rect_int(x, y, width, height):
try:
r = cairo.RectangleInt(x, y, width, height)
except OverflowError:
pass
else:
assert r.x == x
assert r.y == y
assert r.width == width
assert r.height == height
@given(integers())
def test_enums(value):
try:
e = cairo.Antialias(value)
except OverflowError:
pass
else:
assert e == value
@given(integers())
def test_context_get_set_operator(value):
try:
op = cairo.Operator(value)
except OverflowError:
return
surface = cairo.ImageSurface(cairo.FORMAT_ARGB32, 10, 10)
context = cairo.Context(surface)
try:
context.set_operator(op)
except OverflowError:
return
assert context.get_operator() == op
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