1 files changed, 532 insertions, 0 deletions
diff --git a/testing/cffi1/test_ffi_obj.py b/testing/cffi1/test_ffi_obj.py
new file mode 100644
index 0000000..e07d6f9
--- /dev/null
+++ b/testing/cffi1/test_ffi_obj.py
@@ -0,0 +1,532 @@
+import py, sys
+import _cffi_backend as _cffi1_backend
+
+
+def test_ffi_new():
+    ffi = _cffi1_backend.FFI()
+    p = ffi.new("int *")
+    p[0] = -42
+    assert p[0] == -42
+    assert type(ffi) is ffi.__class__ is _cffi1_backend.FFI
+
+def test_ffi_subclass():
+    class FOO(_cffi1_backend.FFI):
+        def __init__(self, x):
+            self.x = x
+    foo = FOO(42)
+    assert foo.x == 42
+    p = foo.new("int *")
+    assert p[0] == 0
+    assert type(foo) is foo.__class__ is FOO
+
+def test_ffi_no_argument():
+    py.test.raises(TypeError, _cffi1_backend.FFI, 42)
+
+def test_ffi_cache_type():
+    ffi = _cffi1_backend.FFI()
+    t1 = ffi.typeof("int **")
+    t2 = ffi.typeof("int *")
+    assert t2.item is t1.item.item
+    assert t2 is t1.item
+    assert ffi.typeof("int[][10]") is ffi.typeof("int[][10]")
+    assert ffi.typeof("int(*)()") is ffi.typeof("int(*)()")
+
+def test_ffi_type_not_immortal():
+    import weakref, gc
+    ffi = _cffi1_backend.FFI()
+    t1 = ffi.typeof("int **")
+    t2 = ffi.typeof("int *")
+    w1 = weakref.ref(t1)
+    w2 = weakref.ref(t2)
+    del t1, ffi
+    gc.collect()
+    assert w1() is None
+    assert w2() is t2
+    ffi = _cffi1_backend.FFI()
+    assert ffi.typeof(ffi.new("int **")[0]) is t2
+    #
+    ffi = _cffi1_backend.FFI()
+    t1 = ffi.typeof("int ***")
+    t2 = ffi.typeof("int **")
+    w1 = weakref.ref(t1)
+    w2 = weakref.ref(t2)
+    del t2, ffi
+    gc.collect()
+    assert w1() is t1
+    assert w2() is not None   # kept alive by t1
+    ffi = _cffi1_backend.FFI()
+    assert ffi.typeof("int * *") is t1.item
+
+def test_ffi_cache_type_globally():
+    ffi1 = _cffi1_backend.FFI()
+    ffi2 = _cffi1_backend.FFI()
+    t1 = ffi1.typeof("int *")
+    t2 = ffi2.typeof("int *")
+    assert t1 is t2
+
+def test_ffi_invalid():
+    ffi = _cffi1_backend.FFI()
+    # array of 10 times an "int[]" is invalid
+    py.test.raises(ValueError, ffi.typeof, "int[10][]")
+
+def test_ffi_docstrings():
+    # check that all methods of the FFI class have a docstring.
+    check_type = type(_cffi1_backend.FFI.new)
+    for methname in dir(_cffi1_backend.FFI):
+        if not methname.startswith('_'):
+            method = getattr(_cffi1_backend.FFI, methname)
+            if isinstance(method, check_type):
+                assert method.__doc__, "method FFI.%s() has no docstring" % (
+                    methname,)
+
+def test_ffi_NULL():
+    NULL = _cffi1_backend.FFI.NULL
+    assert _cffi1_backend.FFI().typeof(NULL).cname == "void *"
+
+def test_ffi_no_attr():
+    ffi = _cffi1_backend.FFI()
+    py.test.raises(AttributeError, "ffi.no_such_name")
+    py.test.raises(AttributeError, "ffi.no_such_name = 42")
+    py.test.raises(AttributeError, "del ffi.no_such_name")
+
+def test_ffi_string():
+    ffi = _cffi1_backend.FFI()
+    p = ffi.new("char[]", init=b"foobar\x00baz")
+    assert ffi.string(p) == b"foobar"
+    assert ffi.string(cdata=p, maxlen=3) == b"foo"
+
+def test_ffi_errno():
+    # xxx not really checking errno, just checking that we can read/write it
+    ffi = _cffi1_backend.FFI()
+    ffi.errno = 42
+    assert ffi.errno == 42
+
+def test_ffi_alignof():
+    ffi = _cffi1_backend.FFI()
+    assert ffi.alignof("int") == 4
+    assert ffi.alignof("int[]") == 4
+    assert ffi.alignof("int[41]") == 4
+    assert ffi.alignof("short[41]") == 2
+    assert ffi.alignof(ffi.new("int[41]")) == 4
+    assert ffi.alignof(ffi.new("int[]", 41)) == 4
+
+def test_ffi_sizeof():
+    ffi = _cffi1_backend.FFI()
+    assert ffi.sizeof("int") == 4
+    py.test.raises(ffi.error, ffi.sizeof, "int[]")
+    assert ffi.sizeof("int[41]") == 41 * 4
+    assert ffi.sizeof(ffi.new("int[41]")) == 41 * 4
+    assert ffi.sizeof(ffi.new("int[]", 41)) == 41 * 4
+
+def test_ffi_callback():
+    ffi = _cffi1_backend.FFI()
+    assert ffi.callback("int(int)", lambda x: x + 42)(10) == 52
+    assert ffi.callback("int(*)(int)", lambda x: x + 42)(10) == 52
+    assert ffi.callback("int(int)", lambda x: x + "", -66)(10) == -66
+    assert ffi.callback("int(int)", lambda x: x + "", error=-66)(10) == -66
+
+def test_ffi_callback_decorator():
+    ffi = _cffi1_backend.FFI()
+    assert ffi.callback(ffi.typeof("int(*)(int)"))(lambda x: x + 42)(10) == 52
+    deco = ffi.callback("int(int)", error=-66)
+    assert deco(lambda x: x + "")(10) == -66
+    assert deco(lambda x: x + 42)(10) == 52
+
+def test_ffi_callback_onerror():
+    ffi = _cffi1_backend.FFI()
+    seen = []
+    def oops(*args):
+        seen.append(args)
+
+    @ffi.callback("int(int)", onerror=oops)
+    def fn1(x):
+        return x + ""
+    assert fn1(10) == 0
+
+    @ffi.callback("int(int)", onerror=oops, error=-66)
+    def fn2(x):
+        return x + ""
+    assert fn2(10) == -66
+
+    assert len(seen) == 2
+    exc, val, tb = seen[0]
+    assert exc is TypeError
+    assert isinstance(val, TypeError)
+    assert tb.tb_frame.f_code.co_name == "fn1"
+    exc, val, tb = seen[1]
+    assert exc is TypeError
+    assert isinstance(val, TypeError)
+    assert tb.tb_frame.f_code.co_name == "fn2"
+    #
+    py.test.raises(TypeError, ffi.callback, "int(int)",
+                   lambda x: x, onerror=42)   # <- not callable
+
+def test_ffi_getctype():
+    ffi = _cffi1_backend.FFI()
+    assert ffi.getctype("int") == "int"
+    assert ffi.getctype("int", 'x') == "int x"
+    assert ffi.getctype("int*") == "int *"
+    assert ffi.getctype("int*", '') == "int *"
+    assert ffi.getctype("int*", 'x') == "int * x"
+    assert ffi.getctype("int", '*') == "int *"
+    assert ffi.getctype("int", replace_with=' * x ') == "int * x"
+    assert ffi.getctype(ffi.typeof("int*"), '*') == "int * *"
+    assert ffi.getctype("int", '[5]') == "int[5]"
+    assert ffi.getctype("int[5]", '[6]') == "int[6][5]"
+    assert ffi.getctype("int[5]", '(*)') == "int(*)[5]"
+    # special-case for convenience: automatically put '()' around '*'
+    assert ffi.getctype("int[5]", '*') == "int(*)[5]"
+    assert ffi.getctype("int[5]", '*foo') == "int(*foo)[5]"
+    assert ffi.getctype("int[5]", ' ** foo ') == "int(** foo)[5]"
+
+def test_addressof():
+    ffi = _cffi1_backend.FFI()
+    a = ffi.new("int[10]")
+    b = ffi.addressof(a, 5)
+    b[2] = -123
+    assert a[7] == -123
+
+def test_handle():
+    ffi = _cffi1_backend.FFI()
+    x = [2, 4, 6]
+    xp = ffi.new_handle(x)
+    assert ffi.typeof(xp) == ffi.typeof("void *")
+    assert ffi.from_handle(xp) is x
+    yp = ffi.new_handle([6, 4, 2])
+    assert ffi.from_handle(yp) == [6, 4, 2]
+
+def test_handle_unique():
+    ffi = _cffi1_backend.FFI()
+    assert ffi.new_handle(None) is not ffi.new_handle(None)
+    assert ffi.new_handle(None) != ffi.new_handle(None)
+
+def test_ffi_cast():
+    ffi = _cffi1_backend.FFI()
+    assert ffi.cast("int(*)(int)", 0) == ffi.NULL
+    ffi.callback("int(int)")      # side-effect of registering this string
+    py.test.raises(ffi.error, ffi.cast, "int(int)", 0)
+
+def test_ffi_invalid_type():
+    ffi = _cffi1_backend.FFI()
+    e = py.test.raises(ffi.error, ffi.cast, "", 0)
+    assert str(e.value) == ("identifier expected\n"
+                            "\n"
+                            "^")
+    e = py.test.raises(ffi.error, ffi.cast, "struct struct", 0)
+    assert str(e.value) == ("struct or union name expected\n"
+                            "struct struct\n"
+                            "       ^")
+    e = py.test.raises(ffi.error, ffi.cast, "struct never_heard_of_s", 0)
+    assert str(e.value) == ("undefined struct/union name\n"
+                            "struct never_heard_of_s\n"
+                            "       ^")
+    e = py.test.raises(ffi.error, ffi.cast, "\t\n\x01\x1f~\x7f\x80\xff", 0)
+    marks = "?" if sys.version_info < (3,) else "??"
+    assert str(e.value) == ("identifier expected\n"
+                            "  ??~?%s%s\n"
+                            "  ^" % (marks, marks))
+    e = py.test.raises(ffi.error, ffi.cast, "X" * 600, 0)
+    assert str(e.value) == ("undefined type name")
+
+def test_ffi_buffer():
+    ffi = _cffi1_backend.FFI()
+    a = ffi.new("signed char[]", [5, 6, 7])
+    assert ffi.buffer(a)[:] == b'\x05\x06\x07'
+    assert ffi.buffer(cdata=a, size=2)[:] == b'\x05\x06'
+    assert type(ffi.buffer(a)) is ffi.buffer
+
+def test_ffi_from_buffer():
+    import array
+    ffi = _cffi1_backend.FFI()
+    a = array.array('H', [10000, 20000, 30000, 40000])
+    c = ffi.from_buffer(a)
+    assert ffi.typeof(c) is ffi.typeof("char[]")
+    assert len(c) == 8
+    ffi.cast("unsigned short *", c)[1] += 500
+    assert list(a) == [10000, 20500, 30000, 40000]
+    py.test.raises(TypeError, ffi.from_buffer, a, True)
+    assert c == ffi.from_buffer("char[]", a, True)
+    assert c == ffi.from_buffer(a, require_writable=True)
+    #
+    c = ffi.from_buffer("unsigned short[]", a)
+    assert len(c) == 4
+    assert c[1] == 20500
+    #
+    c = ffi.from_buffer("unsigned short[2][2]", a)
+    assert len(c) == 2
+    assert len(c[0]) == 2
+    assert c[0][1] == 20500
+    #
+    p = ffi.from_buffer(b"abcd")
+    assert p[2] == b"c"
+    #
+    assert p == ffi.from_buffer(b"abcd", require_writable=False)
+    py.test.raises((TypeError, BufferError), ffi.from_buffer,
+                                             "char[]", b"abcd", True)
+    py.test.raises((TypeError, BufferError), ffi.from_buffer, b"abcd",
+                                             require_writable=True)
+
+def test_memmove():
+    ffi = _cffi1_backend.FFI()
+    p = ffi.new("short[]", [-1234, -2345, -3456, -4567, -5678])
+    ffi.memmove(p, p + 1, 4)
+    assert list(p) == [-2345, -3456, -3456, -4567, -5678]
+    p[2] = 999
+    ffi.memmove(p + 2, p, 6)
+    assert list(p) == [-2345, -3456, -2345, -3456, 999]
+    ffi.memmove(p + 4, ffi.new("char[]", b"\x71\x72"), 2)
+    if sys.byteorder == 'little':
+        assert list(p) == [-2345, -3456, -2345, -3456, 0x7271]
+    else:
+        assert list(p) == [-2345, -3456, -2345, -3456, 0x7172]
+
+def test_memmove_buffer():
+    import array
+    ffi = _cffi1_backend.FFI()
+    a = array.array('H', [10000, 20000, 30000])
+    p = ffi.new("short[]", 5)
+    ffi.memmove(p, a, 6)
+    assert list(p) == [10000, 20000, 30000, 0, 0]
+    ffi.memmove(p + 1, a, 6)
+    assert list(p) == [10000, 10000, 20000, 30000, 0]
+    b = array.array('h', [-1000, -2000, -3000])
+    ffi.memmove(b, a, 4)
+    assert b.tolist() == [10000, 20000, -3000]
+    assert a.tolist() == [10000, 20000, 30000]
+    p[0] = 999
+    p[1] = 998
+    p[2] = 997
+    p[3] = 996
+    p[4] = 995
+    ffi.memmove(b, p, 2)
+    assert b.tolist() == [999, 20000, -3000]
+    ffi.memmove(b, p + 2, 4)
+    assert b.tolist() == [997, 996, -3000]
+    p[2] = -p[2]
+    p[3] = -p[3]
+    ffi.memmove(b, p + 2, 6)
+    assert b.tolist() == [-997, -996, 995]
+
+def test_memmove_readonly_readwrite():
+    ffi = _cffi1_backend.FFI()
+    p = ffi.new("signed char[]", 5)
+    ffi.memmove(p, b"abcde", 3)
+    assert list(p) == [ord("a"), ord("b"), ord("c"), 0, 0]
+    ffi.memmove(p, bytearray(b"ABCDE"), 2)
+    assert list(p) == [ord("A"), ord("B"), ord("c"), 0, 0]
+    py.test.raises((TypeError, BufferError), ffi.memmove, b"abcde", p, 3)
+    ba = bytearray(b"xxxxx")
+    ffi.memmove(dest=ba, src=p, n=3)
+    assert ba == bytearray(b"ABcxx")
+
+def test_ffi_types():
+    CData = _cffi1_backend.FFI.CData
+    CType = _cffi1_backend.FFI.CType
+    ffi = _cffi1_backend.FFI()
+    assert isinstance(ffi.cast("int", 42), CData)
+    assert isinstance(ffi.typeof("int"), CType)
+
+def test_ffi_getwinerror():
+    if sys.platform != "win32":
+        py.test.skip("for windows")
+    ffi = _cffi1_backend.FFI()
+    n = (1 << 29) + 42
+    code, message = ffi.getwinerror(code=n)
+    assert code == n
+
+def test_ffi_new_allocator_1():
+    ffi = _cffi1_backend.FFI()
+    alloc1 = ffi.new_allocator()
+    alloc2 = ffi.new_allocator(should_clear_after_alloc=False)
+    for retry in range(100):
+        p1 = alloc1("int[10]")
+        p2 = alloc2("int[10]")
+        combination = 0
+        for i in range(10):
+            assert p1[i] == 0
+            combination |= p2[i]
+            p1[i] = -42
+            p2[i] = -43
+        if combination != 0:
+            break
+        del p1, p2
+        import gc; gc.collect()
+    else:
+        raise AssertionError("cannot seem to get an int[10] not "
+                             "completely cleared")
+
+def test_ffi_new_allocator_2():
+    ffi = _cffi1_backend.FFI()
+    seen = []
+    def myalloc(size):
+        seen.append(size)
+        return ffi.new("char[]", b"X" * size)
+    def myfree(raw):
+        seen.append(raw)
+    alloc1 = ffi.new_allocator(myalloc, myfree)
+    alloc2 = ffi.new_allocator(alloc=myalloc, free=myfree,
+                               should_clear_after_alloc=False)
+    p1 = alloc1("int[10]")
+    p2 = alloc2("int[]", 10)
+    assert seen == [40, 40]
+    assert ffi.typeof(p1) == ffi.typeof("int[10]")
+    assert ffi.sizeof(p1) == 40
+    assert ffi.typeof(p2) == ffi.typeof("int[]")
+    assert ffi.sizeof(p2) == 40
+    assert p1[5] == 0
+    assert p2[6] == ord('X') * 0x01010101
+    raw1 = ffi.cast("char *", p1)
+    raw2 = ffi.cast("char *", p2)
+    del p1, p2
+    retries = 0
+    while len(seen) != 4:
+        retries += 1
+        assert retries <= 5
+        import gc; gc.collect()
+    assert (seen == [40, 40, raw1, raw2] or
+            seen == [40, 40, raw2, raw1])
+    assert repr(seen[2]) == "<cdata 'char[]' owning 41 bytes>"
+    assert repr(seen[3]) == "<cdata 'char[]' owning 41 bytes>"
+
+def test_ffi_new_allocator_3():
+    ffi = _cffi1_backend.FFI()
+    seen = []
+    def myalloc(size):
+        seen.append(size)
+        return ffi.new("char[]", b"X" * size)
+    alloc1 = ffi.new_allocator(myalloc)    # no 'free'
+    p1 = alloc1("int[10]")
+    assert seen == [40]
+    assert ffi.typeof(p1) == ffi.typeof("int[10]")
+    assert ffi.sizeof(p1) == 40
+    assert p1[5] == 0
+
+def test_ffi_new_allocator_4():
+    ffi = _cffi1_backend.FFI()
+    py.test.raises(TypeError, ffi.new_allocator, free=lambda x: None)
+    #
+    def myalloc2(size):
+        raise LookupError
+    alloc2 = ffi.new_allocator(myalloc2)
+    py.test.raises(LookupError, alloc2, "int[5]")
+    #
+    def myalloc3(size):
+        return 42
+    alloc3 = ffi.new_allocator(myalloc3)
+    e = py.test.raises(TypeError, alloc3, "int[5]")
+    assert str(e.value) == "alloc() must return a cdata object (got int)"
+    #
+    def myalloc4(size):
+        return ffi.cast("int", 42)
+    alloc4 = ffi.new_allocator(myalloc4)
+    e = py.test.raises(TypeError, alloc4, "int[5]")
+    assert str(e.value) == "alloc() must return a cdata pointer, not 'int'"
+    #
+    def myalloc5(size):
+        return ffi.NULL
+    alloc5 = ffi.new_allocator(myalloc5)
+    py.test.raises(MemoryError, alloc5, "int[5]")
+
+def test_bool_issue228():
+    ffi = _cffi1_backend.FFI()
+    fntype = ffi.typeof("int(*callback)(bool is_valid)")
+    assert repr(fntype.args[0]) == "<ctype '_Bool'>"
+
+def test_FILE_issue228():
+    fntype1 = _cffi1_backend.FFI().typeof("FILE *")
+    fntype2 = _cffi1_backend.FFI().typeof("FILE *")
+    assert repr(fntype1) == "<ctype 'FILE *'>"
+    assert fntype1 is fntype2
+
+def test_cast_from_int_type_to_bool():
+    ffi = _cffi1_backend.FFI()
+    for basetype in ['char', 'short', 'int', 'long', 'long long']:
+        for sign in ['signed', 'unsigned']:
+            type = '%s %s' % (sign, basetype)
+            assert int(ffi.cast("_Bool", ffi.cast(type, 42))) == 1
+            assert int(ffi.cast("bool", ffi.cast(type, 42))) == 1
+            assert int(ffi.cast("_Bool", ffi.cast(type, 0))) == 0
+
+def test_init_once():
+    def do_init():
+        seen.append(1)
+        return 42
+    ffi = _cffi1_backend.FFI()
+    seen = []
+    for i in range(3):
+        res = ffi.init_once(do_init, "tag1")
+        assert res == 42
+        assert seen == [1]
+    for i in range(3):
+        res = ffi.init_once(do_init, "tag2")
+        assert res == 42
+        assert seen == [1, 1]
+
+def test_init_once_multithread():
+    if sys.version_info < (3,):
+        import thread
+    else:
+        import _thread as thread
+    import time
+    #
+    def do_init():
+        print('init!')
+        seen.append('init!')
+        time.sleep(1)
+        seen.append('init done')
+        print('init done')
+        return 7
+    ffi = _cffi1_backend.FFI()
+    seen = []
+    for i in range(6):
+        def f():
+            res = ffi.init_once(do_init, "tag")
+            seen.append(res)
+        thread.start_new_thread(f, ())
+    time.sleep(1.5)
+    assert seen == ['init!', 'init done'] + 6 * [7]
+
+def test_init_once_failure():
+    def do_init():
+        seen.append(1)
+        raise ValueError
+    ffi = _cffi1_backend.FFI()
+    seen = []
+    for i in range(5):
+        py.test.raises(ValueError, ffi.init_once, do_init, "tag")
+        assert seen == [1] * (i + 1)
+
+def test_init_once_multithread_failure():
+    if sys.version_info < (3,):
+        import thread
+    else:
+        import _thread as thread
+    import time
+    def do_init():
+        seen.append('init!')
+        time.sleep(1)
+        seen.append('oops')
+        raise ValueError
+    ffi = _cffi1_backend.FFI()
+    seen = []
+    for i in range(3):
+        def f():
+            py.test.raises(ValueError, ffi.init_once, do_init, "tag")
+        thread.start_new_thread(f, ())
+    i = 0
+    while len(seen) < 6:
+        i += 1
+        assert i < 20
+        time.sleep(0.51)
+    assert seen == ['init!', 'oops'] * 3
+
+def test_unpack():
+    ffi = _cffi1_backend.FFI()
+    p = ffi.new("char[]", b"abc\x00def")
+    assert ffi.unpack(p+1, 7) == b"bc\x00def\x00"
+    p = ffi.new("int[]", [-123456789])
+    assert ffi.unpack(p, 1) == [-123456789]
+
+def test_negative_array_size():
+    ffi = _cffi1_backend.FFI()
+    py.test.raises(ffi.error, ffi.cast, "int[-5]", 0)