test_lzma.py 文件源码

def test_simple_bad_args(self):
        self.assertRaises(TypeError, LZMACompressor, [])
        self.assertRaises(TypeError, LZMACompressor, format=3.45)
        self.assertRaises(TypeError, LZMACompressor, check="")
        self.assertRaises(TypeError, LZMACompressor, preset="asdf")
        self.assertRaises(TypeError, LZMACompressor, filters=3)
        # Can't specify FORMAT_AUTO when compressing.
        self.assertRaises(ValueError, LZMACompressor, format=lzma.FORMAT_AUTO)
        # Can't specify a preset and a custom filter chain at the same time.
        with self.assertRaises(ValueError):
            LZMACompressor(preset=7, filters=[{"id": lzma.FILTER_LZMA2}])

        self.assertRaises(TypeError, LZMADecompressor, ())
        self.assertRaises(TypeError, LZMADecompressor, memlimit=b"qw")
        with self.assertRaises(TypeError):
            LZMADecompressor(lzma.FORMAT_RAW, filters="zzz")
        # Cannot specify a memory limit with FILTER_RAW.
        with self.assertRaises(ValueError):
            LZMADecompressor(lzma.FORMAT_RAW, memlimit=0x1000000)
        # Can only specify a custom filter chain with FILTER_RAW.
        self.assertRaises(ValueError, LZMADecompressor, filters=FILTERS_RAW_1)
        with self.assertRaises(ValueError):
            LZMADecompressor(format=lzma.FORMAT_XZ, filters=FILTERS_RAW_1)
        with self.assertRaises(ValueError):
            LZMADecompressor(format=lzma.FORMAT_ALONE, filters=FILTERS_RAW_1)

        lzc = LZMACompressor()
        self.assertRaises(TypeError, lzc.compress)
        self.assertRaises(TypeError, lzc.compress, b"foo", b"bar")
        self.assertRaises(TypeError, lzc.flush, b"blah")
        empty = lzc.flush()
        self.assertRaises(ValueError, lzc.compress, b"quux")
        self.assertRaises(ValueError, lzc.flush)

        lzd = LZMADecompressor()
        self.assertRaises(TypeError, lzd.decompress)
        self.assertRaises(TypeError, lzd.decompress, b"foo", b"bar")
        lzd.decompress(empty)
        self.assertRaises(EOFError, lzd.decompress, b"quux")