ASSERT_EQ(fixup_range(&decrypt,0,0), range_t(0,4095));
ASSERT_EQ(fixup_range(&decrypt,1,4096), range_t(0,8191));
ASSERT_EQ(fixup_range(&decrypt,0,4095), range_t(0,4095));
ASSERT_EQ(fixup_range(&decrypt,0,0), range_t(0,4095));
ASSERT_EQ(fixup_range(&decrypt,1,4096), range_t(0,8191));
ASSERT_EQ(fixup_range(&decrypt,0,4095), range_t(0,4095));