pub const LOSSY_TESTS: &[(&str, &[u8])] = &[
("a", b"a"),
("\u{FFFD}", b"\xFF"),
("\u{FFFD}\u{FFFD}", b"\xFF\xFF"),
("β\u{FFFD}", b"\xCE\xB2\xFF"),
("☃\u{FFFD}", b"\xE2\x98\x83\xFF"),
("𝝱\u{FFFD}", b"\xF0\x9D\x9D\xB1\xFF"),
("\u{FFFD}\u{FFFD}", b"\xCE\xF0"),
("\u{FFFD}\u{FFFD}", b"\xCE\xFF"),
("\u{FFFD}\u{FFFD}", b"\xE2\x98\xF0"),
("\u{FFFD}\u{FFFD}", b"\xE2\x98\xFF"),
("\u{FFFD}", b"\xF0\x9D\x9D"),
("\u{FFFD}\u{FFFD}", b"\xF0\x9D\x9D\xF0"),
("\u{FFFD}\u{FFFD}", b"\xF0\x9D\x9D\xFF"),
("\u{FFFD}", b"\xCE"),
("a\u{FFFD}", b"a\xCE"),
("\u{FFFD}", b"\xE2\x98"),
("a\u{FFFD}", b"a\xE2\x98"),
("\u{FFFD}", b"\xF0\x9D\x9C"),
("a\u{FFFD}", b"a\xF0\x9D\x9C"),
("a\u{FFFD}\u{FFFD}\u{FFFD}z", b"a\xED\xA0\x80z"),
("☃βツ\u{FFFD}", b"\xe2\x98\x83\xce\xb2\xe3\x83\x84\xFF"),
("a\u{FFFD}\u{FFFD}\u{FFFD}b", b"\x61\xF1\x80\x80\xE1\x80\xC2\x62"),
];