test bytes with nice binary string.

[droundy]

I'd love to be able to write something like

expect_test::expect_bytes![b"hello world\x83"].expect(bytes);

and have UPDATE_EXPECT=1 update the byte string to be something reasonably readable, and to give me pretty diffs for "mostly text" binary data.

[xxchan]

I think you should write your own fn bytes_to_some_reasonable_str(bytes) -> String, and then expect![["str"]].assert_eq(bytes_to_some_reasonable_str(bytes))

BTW there's a pattern:

fn check(expect: Expect, input: T) {
    let str = do_something_to_get_a_result_str(input);
	expect.assert_eq(str);
} 

check(expect![], x);