library/core/tests/str_lossy.rs

   1 use core::str::lossy::*;
   2
   3 #[test]
   4 fn chunks() {
   5     let mut iter = Utf8Lossy::from_bytes(b"hello").chunks();
   6     assert_eq!(Some(Utf8LossyChunk { valid: "hello", broken: b"" }), iter.next());
   7     assert_eq!(None, iter.next());
   8
   9     let mut iter = Utf8Lossy::from_bytes("ศไทย中华Việt Nam".as_bytes()).chunks();
  10     assert_eq!(Some(Utf8LossyChunk { valid: "ศไทย中华Việt Nam", broken: b"" }), iter.next());
  11     assert_eq!(None, iter.next());
  12
  13     let mut iter = Utf8Lossy::from_bytes(b"Hello\xC2 There\xFF Goodbye").chunks();
  14     assert_eq!(Some(Utf8LossyChunk { valid: "Hello", broken: b"\xC2" }), iter.next());
  15     assert_eq!(Some(Utf8LossyChunk { valid: " There", broken: b"\xFF" }), iter.next());
  16     assert_eq!(Some(Utf8LossyChunk { valid: " Goodbye", broken: b"" }), iter.next());
  17     assert_eq!(None, iter.next());
  18
  19     let mut iter = Utf8Lossy::from_bytes(b"Hello\xC0\x80 There\xE6\x83 Goodbye").chunks();
  20     assert_eq!(Some(Utf8LossyChunk { valid: "Hello", broken: b"\xC0" }), iter.next());
  21     assert_eq!(Some(Utf8LossyChunk { valid: "", broken: b"\x80" }), iter.next());
  22     assert_eq!(Some(Utf8LossyChunk { valid: " There", broken: b"\xE6\x83" }), iter.next());
  23     assert_eq!(Some(Utf8LossyChunk { valid: " Goodbye", broken: b"" }), iter.next());
  24     assert_eq!(None, iter.next());
  25
  26     let mut iter = Utf8Lossy::from_bytes(b"\xF5foo\xF5\x80bar").chunks();
  27     assert_eq!(Some(Utf8LossyChunk { valid: "", broken: b"\xF5" }), iter.next());
  28     assert_eq!(Some(Utf8LossyChunk { valid: "foo", broken: b"\xF5" }), iter.next());
  29     assert_eq!(Some(Utf8LossyChunk { valid: "", broken: b"\x80" }), iter.next());
  30     assert_eq!(Some(Utf8LossyChunk { valid: "bar", broken: b"" }), iter.next());
  31     assert_eq!(None, iter.next());
  32
  33     let mut iter = Utf8Lossy::from_bytes(b"\xF1foo\xF1\x80bar\xF1\x80\x80baz").chunks();
  34     assert_eq!(Some(Utf8LossyChunk { valid: "", broken: b"\xF1" }), iter.next());
  35     assert_eq!(Some(Utf8LossyChunk { valid: "foo", broken: b"\xF1\x80" }), iter.next());
  36     assert_eq!(Some(Utf8LossyChunk { valid: "bar", broken: b"\xF1\x80\x80" }), iter.next());
  37     assert_eq!(Some(Utf8LossyChunk { valid: "baz", broken: b"" }), iter.next());
  38     assert_eq!(None, iter.next());
  39
  40     let mut iter = Utf8Lossy::from_bytes(b"\xF4foo\xF4\x80bar\xF4\xBFbaz").chunks();
  41     assert_eq!(Some(Utf8LossyChunk { valid: "", broken: b"\xF4" }), iter.next());
  42     assert_eq!(Some(Utf8LossyChunk { valid: "foo", broken: b"\xF4\x80" }), iter.next());
  43     assert_eq!(Some(Utf8LossyChunk { valid: "bar", broken: b"\xF4" }), iter.next());
  44     assert_eq!(Some(Utf8LossyChunk { valid: "", broken: b"\xBF" }), iter.next());
  45     assert_eq!(Some(Utf8LossyChunk { valid: "baz", broken: b"" }), iter.next());
  46     assert_eq!(None, iter.next());
  47
  48     let mut iter = Utf8Lossy::from_bytes(b"\xF0\x80\x80\x80foo\xF0\x90\x80\x80bar").chunks();
  49     assert_eq!(Some(Utf8LossyChunk { valid: "", broken: b"\xF0" }), iter.next());
  50     assert_eq!(Some(Utf8LossyChunk { valid: "", broken: b"\x80" }), iter.next());
  51     assert_eq!(Some(Utf8LossyChunk { valid: "", broken: b"\x80" }), iter.next());
  52     assert_eq!(Some(Utf8LossyChunk { valid: "", broken: b"\x80" }), iter.next());
  53     assert_eq!(Some(Utf8LossyChunk { valid: "foo\u{10000}bar", broken: b"" }), iter.next());
  54     assert_eq!(None, iter.next());
  55
  56     // surrogates
  57     let mut iter = Utf8Lossy::from_bytes(b"\xED\xA0\x80foo\xED\xBF\xBFbar").chunks();
  58     assert_eq!(Some(Utf8LossyChunk { valid: "", broken: b"\xED" }), iter.next());
  59     assert_eq!(Some(Utf8LossyChunk { valid: "", broken: b"\xA0" }), iter.next());
  60     assert_eq!(Some(Utf8LossyChunk { valid: "", broken: b"\x80" }), iter.next());
  61     assert_eq!(Some(Utf8LossyChunk { valid: "foo", broken: b"\xED" }), iter.next());
  62     assert_eq!(Some(Utf8LossyChunk { valid: "", broken: b"\xBF" }), iter.next());
  63     assert_eq!(Some(Utf8LossyChunk { valid: "", broken: b"\xBF" }), iter.next());
  64     assert_eq!(Some(Utf8LossyChunk { valid: "bar", broken: b"" }), iter.next());
  65     assert_eq!(None, iter.next());
  66 }
  67
  68 #[test]
  69 fn display() {
  70     assert_eq!(
  71         "Hello\u{FFFD}\u{FFFD} There\u{FFFD} Goodbye",
  72         &Utf8Lossy::from_bytes(b"Hello\xC0\x80 There\xE6\x83 Goodbye").to_string()
  73     );
  74 }
  75
  76 #[test]
  77 fn debug() {
  78     assert_eq!(
  79         "\"Hello\\xc0\\x80 There\\xe6\\x83 Goodbye\\u{10d4ea}\"",
  80         &format!(
  81             "{:?}",
  82             Utf8Lossy::from_bytes(b"Hello\xC0\x80 There\xE6\x83 Goodbye\xf4\x8d\x93\xaa")
  83         )
  84     );
  85 }