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import os
import sys
import ctypes
import pytest
from io import BytesIO
from sdl2 import rwops
if sys.version_info[0] >= 3:
byteify = bytes
stringify = lambda x, enc: x.decode(enc)
else:
byteify = lambda x, enc: x.encode(enc)
stringify = lambda x, enc: str(x)
testfile = os.path.join(os.path.dirname(os.path.abspath(__file__)),
"resources", "rwopstest.txt")
# TODO: extended checks for r/w operations outside of buffer ranges, invalid
# values, etc.!
class TestSDLRWops(object):
__tags__ = ["sdl"]
def test_SDL_RWops(self):
rw = rwops.SDL_RWops()
assert isinstance(rw, rwops.SDL_RWops)
def test_SDL_RWFromFile(self):
rw = rwops.SDL_RWFromFile(testfile.encode("utf-8"), b"r")
assert isinstance(rw.contents, rwops.SDL_RWops)
# Read the first 36 bytes(sic!). It should be:
# 'This is a test file for sdl2.rwops!'
length = 36
buf = BytesIO()
while length >= 2:
# Reading in two bytes - we have plain text(1-byte encoding), so
# we read in 2 characters at a time. This means that the first
# character is always stored in the lo byte.
ch = rwops.SDL_ReadLE16(rw)
buf.write(byteify(chr(ch & 0x00FF), "utf-8"))
buf.write(byteify(chr(ch >> 8), "utf-8"))
length -= 2
assert stringify(buf.getvalue(), "utf-8") == \
"This is a test file for sdl2.rwops!"
@pytest.mark.skip("not implemented")
def test_SDL_RWFromFP(self):
pass
@pytest.mark.skip("not implemented")
def test_SDL_RWFromMem(self):
pass
@pytest.mark.skip("not implemented")
def test_SDL_RWFromConstMem(self):
pass
def test_rw_from_object(self):
buf = BytesIO()
rw = rwops.rw_from_object(buf)
assert isinstance(rw, rwops.SDL_RWops)
for s in("Test", "Test", "Test", "Banana"):
buf.write(byteify(s, "utf-8"))
length = rwops.SDL_RWseek(rw, 0, rwops.RW_SEEK_END)
rwops.SDL_RWseek(rw, 0, rwops.RW_SEEK_SET)
assert len(buf.getvalue()) == length
rwops.SDL_RWclose(rw)
assert buf.closed
with pytest.raises(ValueError):
buf.write("Test")
with pytest.raises(ValueError):
buf.getvalue()
def test_SDL_RWSeekTell(self):
data = byteify("A Teststring of length 25", "utf-8")
buf = BytesIO(data)
rw = rwops.rw_from_object(buf)
assert isinstance(rw, rwops.SDL_RWops)
pos = rwops.SDL_RWseek(rw, 0, rwops.RW_SEEK_END)
assert pos == buf.tell() == len(data)
pos = rwops.SDL_RWseek(rw, 0, rwops.RW_SEEK_SET)
assert pos == buf.tell() == 0
pos = rwops.SDL_RWseek(rw, 15, rwops.RW_SEEK_CUR)
assert pos == buf.tell() == 15
pos = rwops.SDL_RWseek(rw, -3, rwops.RW_SEEK_CUR)
assert pos == buf.tell() == 12
pos = rwops.SDL_RWseek(rw, 7, rwops.RW_SEEK_CUR)
assert pos == buf.tell() == 19
pos = rwops.SDL_RWseek(rw, -11, rwops.RW_SEEK_END)
assert pos == buf.tell() == 14
pos = rwops.SDL_RWseek(rw, 8, rwops.RW_SEEK_SET)
assert pos == buf.tell() == 8
pos = rwops.SDL_RWseek(rw, -2, rwops.RW_SEEK_SET)
assert pos == -1
assert buf.tell() == 8
pos = rwops.SDL_RWseek(rw, 12, rwops.RW_SEEK_END)
assert pos == buf.tell() == len(data) + 12
def test_SDL_RWread(self):
data = byteify("A Teststring of length 25", "utf-8")
buf = BytesIO(data)
rw = rwops.rw_from_object(buf)
assert isinstance(rw, rwops.SDL_RWops)
readbuf = ctypes.create_string_buffer(2)
read = rwops.SDL_RWread(rw, readbuf, 1, 2)
assert read == 2
assert readbuf.raw == b"A "
readbuf = ctypes.create_string_buffer(10)
read = rwops.SDL_RWread(rw, readbuf, 1, 10)
assert read == 10
assert readbuf.raw == b"Teststring"
def test_SDL_RWwrite(self):
data = byteify("A Teststring of length 25", "utf-8")
buf = BytesIO(data)
rw = rwops.rw_from_object(buf)
assert isinstance(rw, rwops.SDL_RWops)
writebuf = ctypes.create_string_buffer(b"XQ")
written = rwops.SDL_RWwrite(rw, writebuf, 1, 2)
assert written == 2
assert buf.getvalue() == b"XQTeststring of length 25"
writebuf = ctypes.create_string_buffer(b"banana")
rwops.SDL_RWseek(rw, 14, rwops.RW_SEEK_CUR)
written = rwops.SDL_RWwrite(rw, writebuf, 1, 6)
assert written == 6
assert buf.getvalue() == b"XQTeststring of banana 25"
def test_SDL_RWclose(self):
data = byteify("A Teststring", "utf-8")
buf = BytesIO(data)
rw = rwops.rw_from_object(buf)
assert isinstance(rw, rwops.SDL_RWops)
assert buf.getvalue() == data
rwops.SDL_RWclose(rw)
with pytest.raises(ValueError):
buf.getvalue()
@pytest.mark.skip("not implemented")
def test_SDL_AllocFreeRW(self):
pass
@pytest.mark.skip("not implemented")
def test_SDL_LoadFile_RW(self):
pass
@pytest.mark.skip("not implemented")
def test_SDL_LoadFile(self):
pass
def test_SDL_ReadLE16(self):
data = byteify("A Teststring", "utf-8")
buf = BytesIO(data)
rw = rwops.rw_from_object(buf)
assert isinstance(rw, rwops.SDL_RWops)
ch = rwops.SDL_ReadLE16(rw)
assert chr(ch & 0x00FF) == "A"
assert chr(ch >> 8) == " "
pos = rwops.SDL_RWseek(rw, 8, rwops.RW_SEEK_SET)
assert pos == 8
ch = rwops.SDL_ReadLE16(rw)
assert chr(ch & 0x00FF) == "r"
assert chr(ch >> 8) == "i"
def test_SDL_ReadBE16(self):
data = byteify("A Teststring", "utf-8")
buf = BytesIO(data)
rw = rwops.rw_from_object(buf)
assert isinstance(rw, rwops.SDL_RWops)
ch = rwops.SDL_ReadBE16(rw)
assert chr(ch & 0x00FF) == " "
assert chr(ch >> 8) == "A"
pos = rwops.SDL_RWseek(rw, 8, rwops.RW_SEEK_SET)
assert pos == 8
ch = rwops.SDL_ReadBE16(rw)
assert chr(ch & 0x00FF) == "i"
assert chr(ch >> 8) == "r"
def test_SDL_ReadLE32(self):
data = byteify("A Teststring", "utf-8")
buf = BytesIO(data)
rw = rwops.rw_from_object(buf)
assert isinstance(rw, rwops.SDL_RWops)
ch = rwops.SDL_ReadLE32(rw)
assert chr(ch & 0x000000FF) == "A"
assert chr((ch & 0x0000FF00) >> 8) == " "
assert chr((ch & 0x00FF0000) >> 16) == "T"
assert chr((ch & 0xFF000000) >> 24) == "e"
pos = rwops.SDL_RWseek(rw, 8, rwops.RW_SEEK_SET)
assert pos == 8
ch = rwops.SDL_ReadLE32(rw)
assert chr(ch & 0x000000FF) == "r"
assert chr((ch & 0x0000FF00) >> 8) == "i"
assert chr((ch & 0x00FF0000) >> 16) == "n"
assert chr((ch & 0xFF000000) >> 24) == "g"
def test_SDL_ReadBE32(self):
data = byteify("A Teststring", "utf-8")
buf = BytesIO(data)
rw = rwops.rw_from_object(buf)
assert isinstance(rw, rwops.SDL_RWops)
ch = rwops.SDL_ReadBE32(rw)
assert chr(ch & 0x000000FF) == "e"
assert chr((ch & 0x0000FF00) >> 8) == "T"
assert chr((ch & 0x00FF0000) >> 16) == " "
assert chr((ch & 0xFF000000) >> 24) == "A"
pos = rwops.SDL_RWseek(rw, 8, rwops.RW_SEEK_SET)
assert pos == 8
ch = rwops.SDL_ReadBE32(rw)
assert chr(ch & 0x000000FF) == "g"
assert chr((ch & 0x0000FF00) >> 8) == "n"
assert chr((ch & 0x00FF0000) >> 16) == "i"
assert chr((ch & 0xFF000000) >> 24) == "r"
def test_SDL_ReadLE64(self):
data = byteify("A Teststring 64b", "utf-8")
buf = BytesIO(data)
rw = rwops.rw_from_object(buf)
assert isinstance(rw, rwops.SDL_RWops)
ch = rwops.SDL_ReadLE64(rw)
assert chr(ch & 0x00000000000000FF) == "A"
assert chr((ch & 0x000000000000FF00) >> 8) == " "
assert chr((ch & 0x0000000000FF0000) >> 16) == "T"
assert chr((ch & 0x00000000FF000000) >> 24) == "e"
assert chr((ch & 0x000000FF00000000) >> 32) == "s"
assert chr((ch & 0x0000FF0000000000) >> 40) == "t"
assert chr((ch & 0x00FF000000000000) >> 48) == "s"
assert chr((ch & 0xFF00000000000000) >> 56) == "t"
pos = rwops.SDL_RWseek(rw, 8, rwops.RW_SEEK_SET)
assert pos == 8
ch = rwops.SDL_ReadLE64(rw)
assert chr(ch & 0x00000000000000FF) == "r"
assert chr((ch & 0x000000000000FF00) >> 8) == "i"
assert chr((ch & 0x0000000000FF0000) >> 16) == "n"
assert chr((ch & 0x00000000FF000000) >> 24) == "g"
assert chr((ch & 0x000000FF00000000) >> 32) == " "
assert chr((ch & 0x0000FF0000000000) >> 40) == "6"
assert chr((ch & 0x00FF000000000000) >> 48) == "4"
assert chr((ch & 0xFF00000000000000) >> 56) == "b"
def test_SDL_ReadBE64(self):
data = byteify("A Teststring 64b", "utf-8")
buf = BytesIO(data)
rw = rwops.rw_from_object(buf)
assert isinstance(rw, rwops.SDL_RWops)
ch = rwops.SDL_ReadBE64(rw)
assert chr(ch & 0x00000000000000FF) == "t"
assert chr((ch & 0x000000000000FF00) >> 8) == "s"
assert chr((ch & 0x0000000000FF0000) >> 16) == "t"
assert chr((ch & 0x00000000FF000000) >> 24) == "s"
assert chr((ch & 0x000000FF00000000) >> 32) == "e"
assert chr((ch & 0x0000FF0000000000) >> 40) == "T"
assert chr((ch & 0x00FF000000000000) >> 48) == " "
assert chr((ch & 0xFF00000000000000) >> 56) == "A"
pos = rwops.SDL_RWseek(rw, 8, rwops.RW_SEEK_SET)
assert pos == 8
ch = rwops.SDL_ReadBE64(rw)
assert chr(ch & 0x00000000000000FF) == "b"
assert chr((ch & 0x000000000000FF00) >> 8) == "4"
assert chr((ch & 0x0000000000FF0000) >> 16) == "6"
assert chr((ch & 0x00000000FF000000) >> 24) == " "
assert chr((ch & 0x000000FF00000000) >> 32) == "g"
assert chr((ch & 0x0000FF0000000000) >> 40) == "n"
assert chr((ch & 0x00FF000000000000) >> 48) == "i"
assert chr((ch & 0xFF00000000000000) >> 56) == "r"
def test_SDL_WriteLE16(self):
data = byteify("A Teststring", "utf-8")
buf = BytesIO(data)
rw = rwops.rw_from_object(buf)
assert isinstance(rw, rwops.SDL_RWops)
value = ((ord("q") << 8) | (ord("%")))
rwops.SDL_WriteLE16(rw, value)
assert stringify(buf.getvalue(), "utf-8") == "%qTeststring"
rwops.SDL_RWseek(rw, 6, rwops.RW_SEEK_SET)
rwops.SDL_WriteLE16(rw, value)
assert stringify(buf.getvalue(), "utf-8") == "%qTest%qring"
def test_SDL_WriteBE16(self):
data = byteify("A Teststring", "utf-8")
buf = BytesIO(data)
rw = rwops.rw_from_object(buf)
assert isinstance(rw, rwops.SDL_RWops)
value = ((ord("q") << 8) | (ord("%")))
rwops.SDL_WriteBE16(rw, value)
assert stringify(buf.getvalue(), "utf-8") == "q%Teststring"
rwops.SDL_RWseek(rw, 6, rwops.RW_SEEK_SET)
rwops.SDL_WriteBE16(rw, value)
assert stringify(buf.getvalue(), "utf-8") == "q%Testq%ring"
def test_SDL_WriteLE32(self):
data = byteify("A Teststring", "utf-8")
buf = BytesIO(data)
rw = rwops.rw_from_object(buf)
assert isinstance(rw, rwops.SDL_RWops)
value = ((ord("a") << 24) |
(ord("c") << 16) |
(ord("f") << 8) |
(ord("z"))
)
rwops.SDL_WriteLE32(rw, value)
assert stringify(buf.getvalue(), "utf-8") == "zfcaststring"
rwops.SDL_RWseek(rw, 6, rwops.RW_SEEK_SET)
rwops.SDL_WriteLE32(rw, value)
assert stringify(buf.getvalue(), "utf-8") == "zfcastzfcang"
def test_SDL_WriteBE32(self):
data = byteify("A Teststring", "utf-8")
buf = BytesIO(data)
rw = rwops.rw_from_object(buf)
assert isinstance(rw, rwops.SDL_RWops)
value = ((ord("a") << 24) |
(ord("c") << 16) |
(ord("f") << 8) |
(ord("z"))
)
rwops.SDL_WriteBE32(rw, value)
assert stringify(buf.getvalue(), "utf-8") == "acfzststring"
rwops.SDL_RWseek(rw, 6, rwops.RW_SEEK_SET)
rwops.SDL_WriteBE32(rw, value)
assert stringify(buf.getvalue(), "utf-8") == "acfzstacfzng"
def test_SDL_WriteLE64(self):
data = byteify("A Teststring", "utf-8")
buf = BytesIO(data)
rw = rwops.rw_from_object(buf)
assert isinstance(rw, rwops.SDL_RWops)
value = ((ord("q") << 56) |
(ord("w") << 48) |
(ord("b") << 40) |
(ord("k") << 32) |
(ord("a") << 24) |
(ord("c") << 16) |
(ord("f") << 8) |
(ord("z"))
)
rwops.SDL_WriteLE64(rw, value)
assert stringify(buf.getvalue(), "utf-8") == "zfcakbwqring"
rwops.SDL_RWseek(rw, 4, rwops.RW_SEEK_SET)
rwops.SDL_WriteLE64(rw, value)
assert stringify(buf.getvalue(), "utf-8") == "zfcazfcakbwq"
def test_SDL_WriteBE64(self):
data = byteify("A Teststring", "utf-8")
buf = BytesIO(data)
rw = rwops.rw_from_object(buf)
assert isinstance(rw, rwops.SDL_RWops)
value = ((ord("q") << 56) |
(ord("w") << 48) |
(ord("b") << 40) |
(ord("k") << 32) |
(ord("a") << 24) |
(ord("c") << 16) |
(ord("f") << 8) |
(ord("z"))
)
rwops.SDL_WriteBE64(rw, value)
assert stringify(buf.getvalue(), "utf-8") == "qwbkacfzring"
rwops.SDL_RWseek(rw, 4, rwops.RW_SEEK_SET)
rwops.SDL_WriteBE64(rw, value)
assert stringify(buf.getvalue(), "utf-8") == "qwbkqwbkacfz"
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