402 lines
12 KiB
Rust
402 lines
12 KiB
Rust
use core::char::from_u32;
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#[test]
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fn test_is_ascii() {
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assert!(b"".is_ascii());
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assert!(b"banana\0\x7F".is_ascii());
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assert!(b"banana\0\x7F".iter().all(|b| b.is_ascii()));
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assert!(!b"Vi\xe1\xbb\x87t Nam".is_ascii());
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assert!(!b"Vi\xe1\xbb\x87t Nam".iter().all(|b| b.is_ascii()));
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assert!(!b"\xe1\xbb\x87".iter().any(|b| b.is_ascii()));
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assert!("".is_ascii());
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assert!("banana\0\u{7F}".is_ascii());
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assert!("banana\0\u{7F}".chars().all(|c| c.is_ascii()));
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assert!(!"ประเทศไทย中华Việt Nam".chars().all(|c| c.is_ascii()));
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assert!(!"ประเทศไทย中华ệ ".chars().any(|c| c.is_ascii()));
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}
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#[test]
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fn test_to_ascii_uppercase() {
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assert_eq!("url()URL()uRl()ürl".to_ascii_uppercase(), "URL()URL()URL()üRL");
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assert_eq!("hıKß".to_ascii_uppercase(), "HıKß");
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for i in 0..501 {
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let upper =
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if 'a' as u32 <= i && i <= 'z' as u32 { i + 'A' as u32 - 'a' as u32 } else { i };
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assert_eq!(
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(from_u32(i).unwrap()).to_string().to_ascii_uppercase(),
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(from_u32(upper).unwrap()).to_string()
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);
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}
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}
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#[test]
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fn test_to_ascii_lowercase() {
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assert_eq!("url()URL()uRl()Ürl".to_ascii_lowercase(), "url()url()url()Ürl");
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// Dotted capital I, Kelvin sign, Sharp S.
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assert_eq!("HİKß".to_ascii_lowercase(), "hİKß");
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for i in 0..501 {
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let lower =
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if 'A' as u32 <= i && i <= 'Z' as u32 { i + 'a' as u32 - 'A' as u32 } else { i };
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assert_eq!(
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(from_u32(i).unwrap()).to_string().to_ascii_lowercase(),
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(from_u32(lower).unwrap()).to_string()
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);
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}
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}
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#[test]
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fn test_make_ascii_lower_case() {
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macro_rules! test {
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($from: expr, $to: expr) => {{
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let mut x = $from;
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x.make_ascii_lowercase();
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assert_eq!(x, $to);
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}};
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}
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test!(b'A', b'a');
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test!(b'a', b'a');
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test!(b'!', b'!');
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test!('A', 'a');
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test!('À', 'À');
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test!('a', 'a');
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test!('!', '!');
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test!(b"H\xc3\x89".to_vec(), b"h\xc3\x89");
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test!("HİKß".to_string(), "hİKß");
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}
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#[test]
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fn test_make_ascii_upper_case() {
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macro_rules! test {
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($from: expr, $to: expr) => {{
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let mut x = $from;
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x.make_ascii_uppercase();
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assert_eq!(x, $to);
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}};
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}
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test!(b'a', b'A');
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test!(b'A', b'A');
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test!(b'!', b'!');
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test!('a', 'A');
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test!('à', 'à');
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test!('A', 'A');
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test!('!', '!');
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test!(b"h\xc3\xa9".to_vec(), b"H\xc3\xa9");
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test!("hıKß".to_string(), "HıKß");
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let mut x = "Hello".to_string();
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x[..3].make_ascii_uppercase(); // Test IndexMut on String.
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assert_eq!(x, "HELlo")
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}
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#[test]
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fn test_eq_ignore_ascii_case() {
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assert!("url()URL()uRl()Ürl".eq_ignore_ascii_case("url()url()url()Ürl"));
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assert!(!"Ürl".eq_ignore_ascii_case("ürl"));
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// Dotted capital I, Kelvin sign, Sharp S.
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assert!("HİKß".eq_ignore_ascii_case("hİKß"));
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assert!(!"İ".eq_ignore_ascii_case("i"));
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assert!(!"K".eq_ignore_ascii_case("k"));
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assert!(!"ß".eq_ignore_ascii_case("s"));
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for i in 0..501 {
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let lower =
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if 'A' as u32 <= i && i <= 'Z' as u32 { i + 'a' as u32 - 'A' as u32 } else { i };
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assert!(
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(from_u32(i).unwrap())
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.to_string()
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.eq_ignore_ascii_case(&from_u32(lower).unwrap().to_string())
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);
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}
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}
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#[test]
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fn inference_works() {
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let x = "a".to_string();
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x.eq_ignore_ascii_case("A");
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}
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// Shorthands used by the is_ascii_* tests.
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macro_rules! assert_all {
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($what:ident, $($str:tt),+) => {{
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$(
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for b in $str.chars() {
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if !b.$what() {
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panic!("expected {}({}) but it isn't",
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stringify!($what), b);
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}
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}
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for b in $str.as_bytes().iter() {
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if !b.$what() {
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panic!("expected {}(0x{:02x})) but it isn't",
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stringify!($what), b);
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}
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}
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)+
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}};
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($what:ident, $($str:tt),+,) => (assert_all!($what,$($str),+))
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}
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macro_rules! assert_none {
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($what:ident, $($str:tt),+) => {{
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$(
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for b in $str.chars() {
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if b.$what() {
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panic!("expected not-{}({}) but it is",
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stringify!($what), b);
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}
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}
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for b in $str.as_bytes().iter() {
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if b.$what() {
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panic!("expected not-{}(0x{:02x})) but it is",
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stringify!($what), b);
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}
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}
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)+
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}};
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($what:ident, $($str:tt),+,) => (assert_none!($what,$($str),+))
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}
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#[test]
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fn test_is_ascii_alphabetic() {
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assert_all!(
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is_ascii_alphabetic,
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"",
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"abcdefghijklmnopqrstuvwxyz",
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"ABCDEFGHIJKLMNOQPRSTUVWXYZ",
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);
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assert_none!(
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is_ascii_alphabetic,
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"0123456789",
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"!\"#$%&'()*+,-./:;<=>?@[\\]^_`{|}~",
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" \t\n\x0c\r",
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"\x00\x01\x02\x03\x04\x05\x06\x07",
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"\x08\x09\x0a\x0b\x0c\x0d\x0e\x0f",
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"\x10\x11\x12\x13\x14\x15\x16\x17",
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"\x18\x19\x1a\x1b\x1c\x1d\x1e\x1f",
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"\x7f",
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);
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}
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#[test]
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fn test_is_ascii_uppercase() {
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assert_all!(is_ascii_uppercase, "", "ABCDEFGHIJKLMNOQPRSTUVWXYZ",);
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assert_none!(
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is_ascii_uppercase,
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"abcdefghijklmnopqrstuvwxyz",
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"0123456789",
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"!\"#$%&'()*+,-./:;<=>?@[\\]^_`{|}~",
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" \t\n\x0c\r",
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"\x00\x01\x02\x03\x04\x05\x06\x07",
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"\x08\x09\x0a\x0b\x0c\x0d\x0e\x0f",
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"\x10\x11\x12\x13\x14\x15\x16\x17",
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"\x18\x19\x1a\x1b\x1c\x1d\x1e\x1f",
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"\x7f",
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);
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}
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#[test]
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fn test_is_ascii_lowercase() {
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assert_all!(is_ascii_lowercase, "abcdefghijklmnopqrstuvwxyz",);
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assert_none!(
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is_ascii_lowercase,
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"ABCDEFGHIJKLMNOQPRSTUVWXYZ",
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"0123456789",
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"!\"#$%&'()*+,-./:;<=>?@[\\]^_`{|}~",
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" \t\n\x0c\r",
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"\x00\x01\x02\x03\x04\x05\x06\x07",
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"\x08\x09\x0a\x0b\x0c\x0d\x0e\x0f",
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"\x10\x11\x12\x13\x14\x15\x16\x17",
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"\x18\x19\x1a\x1b\x1c\x1d\x1e\x1f",
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"\x7f",
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);
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}
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#[test]
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fn test_is_ascii_alphanumeric() {
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assert_all!(
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is_ascii_alphanumeric,
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"",
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"abcdefghijklmnopqrstuvwxyz",
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"ABCDEFGHIJKLMNOQPRSTUVWXYZ",
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"0123456789",
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);
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assert_none!(
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is_ascii_alphanumeric,
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"!\"#$%&'()*+,-./:;<=>?@[\\]^_`{|}~",
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" \t\n\x0c\r",
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"\x00\x01\x02\x03\x04\x05\x06\x07",
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"\x08\x09\x0a\x0b\x0c\x0d\x0e\x0f",
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"\x10\x11\x12\x13\x14\x15\x16\x17",
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"\x18\x19\x1a\x1b\x1c\x1d\x1e\x1f",
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"\x7f",
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);
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}
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#[test]
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fn test_is_ascii_digit() {
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assert_all!(is_ascii_digit, "", "0123456789",);
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assert_none!(
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is_ascii_digit,
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"abcdefghijklmnopqrstuvwxyz",
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"ABCDEFGHIJKLMNOQPRSTUVWXYZ",
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"!\"#$%&'()*+,-./:;<=>?@[\\]^_`{|}~",
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" \t\n\x0c\r",
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"\x00\x01\x02\x03\x04\x05\x06\x07",
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"\x08\x09\x0a\x0b\x0c\x0d\x0e\x0f",
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"\x10\x11\x12\x13\x14\x15\x16\x17",
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"\x18\x19\x1a\x1b\x1c\x1d\x1e\x1f",
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"\x7f",
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);
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}
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#[test]
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fn test_is_ascii_hexdigit() {
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assert_all!(is_ascii_hexdigit, "", "0123456789", "abcdefABCDEF",);
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assert_none!(
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is_ascii_hexdigit,
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"ghijklmnopqrstuvwxyz",
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"GHIJKLMNOQPRSTUVWXYZ",
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"!\"#$%&'()*+,-./:;<=>?@[\\]^_`{|}~",
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" \t\n\x0c\r",
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"\x00\x01\x02\x03\x04\x05\x06\x07",
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"\x08\x09\x0a\x0b\x0c\x0d\x0e\x0f",
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"\x10\x11\x12\x13\x14\x15\x16\x17",
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"\x18\x19\x1a\x1b\x1c\x1d\x1e\x1f",
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"\x7f",
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);
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}
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#[test]
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fn test_is_ascii_punctuation() {
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assert_all!(is_ascii_punctuation, "", "!\"#$%&'()*+,-./:;<=>?@[\\]^_`{|}~",);
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assert_none!(
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is_ascii_punctuation,
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"abcdefghijklmnopqrstuvwxyz",
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"ABCDEFGHIJKLMNOQPRSTUVWXYZ",
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"0123456789",
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" \t\n\x0c\r",
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"\x00\x01\x02\x03\x04\x05\x06\x07",
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"\x08\x09\x0a\x0b\x0c\x0d\x0e\x0f",
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"\x10\x11\x12\x13\x14\x15\x16\x17",
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"\x18\x19\x1a\x1b\x1c\x1d\x1e\x1f",
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"\x7f",
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);
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}
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#[test]
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fn test_is_ascii_graphic() {
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assert_all!(
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is_ascii_graphic,
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"",
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"abcdefghijklmnopqrstuvwxyz",
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"ABCDEFGHIJKLMNOQPRSTUVWXYZ",
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"0123456789",
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"!\"#$%&'()*+,-./:;<=>?@[\\]^_`{|}~",
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);
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assert_none!(
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is_ascii_graphic,
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" \t\n\x0c\r",
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"\x00\x01\x02\x03\x04\x05\x06\x07",
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"\x08\x09\x0a\x0b\x0c\x0d\x0e\x0f",
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"\x10\x11\x12\x13\x14\x15\x16\x17",
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"\x18\x19\x1a\x1b\x1c\x1d\x1e\x1f",
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"\x7f",
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);
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}
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#[test]
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fn test_is_ascii_whitespace() {
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assert_all!(is_ascii_whitespace, "", " \t\n\x0c\r",);
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assert_none!(
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is_ascii_whitespace,
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"abcdefghijklmnopqrstuvwxyz",
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"ABCDEFGHIJKLMNOQPRSTUVWXYZ",
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"0123456789",
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"!\"#$%&'()*+,-./:;<=>?@[\\]^_`{|}~",
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"\x00\x01\x02\x03\x04\x05\x06\x07",
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"\x08\x0b\x0e\x0f",
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"\x10\x11\x12\x13\x14\x15\x16\x17",
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"\x18\x19\x1a\x1b\x1c\x1d\x1e\x1f",
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"\x7f",
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);
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}
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#[test]
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fn test_is_ascii_control() {
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assert_all!(
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is_ascii_control,
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"",
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"\x00\x01\x02\x03\x04\x05\x06\x07",
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"\x08\x09\x0a\x0b\x0c\x0d\x0e\x0f",
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"\x10\x11\x12\x13\x14\x15\x16\x17",
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"\x18\x19\x1a\x1b\x1c\x1d\x1e\x1f",
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"\x7f",
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);
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assert_none!(
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is_ascii_control,
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"abcdefghijklmnopqrstuvwxyz",
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"ABCDEFGHIJKLMNOQPRSTUVWXYZ",
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"0123456789",
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"!\"#$%&'()*+,-./:;<=>?@[\\]^_`{|}~",
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" ",
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);
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}
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// `is_ascii` does a good amount of pointer manipulation and has
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// alignment-dependent computation. This is all sanity-checked via
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// `debug_assert!`s, so we test various sizes/alignments thoroughly versus an
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// "obviously correct" baseline function.
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#[test]
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fn test_is_ascii_align_size_thoroughly() {
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// The "obviously-correct" baseline mentioned above.
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fn is_ascii_baseline(s: &[u8]) -> bool {
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s.iter().all(|b| b.is_ascii())
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}
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// Helper to repeat `l` copies of `b0` followed by `l` copies of `b1`.
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fn repeat_concat(b0: u8, b1: u8, l: usize) -> Vec<u8> {
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use core::iter::repeat;
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repeat(b0).take(l).chain(repeat(b1).take(l)).collect()
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}
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// Miri is too slow for much of this, and in miri `align_offset` always
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// returns `usize::max_value()` anyway (at the moment), so we just test
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// lightly.
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let iter = if cfg!(miri) { 0..5 } else { 0..100 };
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for i in iter {
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#[cfg(not(miri))]
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let cases = &[
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b"a".repeat(i),
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b"\0".repeat(i),
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b"\x7f".repeat(i),
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b"\x80".repeat(i),
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b"\xff".repeat(i),
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repeat_concat(b'a', 0x80u8, i),
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repeat_concat(0x80u8, b'a', i),
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];
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#[cfg(miri)]
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let cases = &[repeat_concat(b'a', 0x80u8, i)];
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for case in cases {
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for pos in 0..=case.len() {
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// Potentially misaligned head
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let prefix = &case[pos..];
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assert_eq!(is_ascii_baseline(prefix), prefix.is_ascii(),);
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// Potentially misaligned tail
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let suffix = &case[..case.len() - pos];
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assert_eq!(is_ascii_baseline(suffix), suffix.is_ascii(),);
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// Both head and tail are potentially misaligned
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let mid = &case[(pos / 2)..(case.len() - (pos / 2))];
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assert_eq!(is_ascii_baseline(mid), mid.is_ascii(),);
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}
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}
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}
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}
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