test_c.py 文件源码

def test_FILE_object():
    if sys.platform == "win32":
        py.test.skip("testing FILE not implemented")
    #
    BFILE = new_struct_type("FILE")
    BFILEP = new_pointer_type(BFILE)
    BChar = new_primitive_type("char")
    BCharP = new_pointer_type(BChar)
    BInt = new_primitive_type("int")
    BFunc = new_function_type((BCharP, BFILEP), BInt, False)
    BFunc2 = new_function_type((BFILEP,), BInt, False)
    ll = find_and_load_library('c')
    fputs = ll.load_function(BFunc, "fputs")
    fileno = ll.load_function(BFunc2, "fileno")
    #
    import posix
    fdr, fdw = posix.pipe()
    fw1 = posix.fdopen(fdw, 'wb', 256)
    #
    fw1p = cast(BFILEP, fw1)
    fw1.write(b"X")
    fw1.flush()
    res = fputs(b"hello\n", fw1p)
    assert res >= 0
    res = fileno(fw1p)
    assert (res == fdw) == (sys.version_info < (3,))
    fw1.close()
    #
    data = posix.read(fdr, 256)
    assert data == b"Xhello\n"
    posix.close(fdr)