Rollup merge of rust-lang#79038 - CDirkx:move-ui-tests, r=dtolnay

Change ui test that are run-pass and that do not test the compiler to library tests

Part of rust-lang#76268, these are some of the relevant ui tests I found that can be replaced by library tests.

Note: this PR just moves the tests, I have not checked for any overlap between these tests and existing library tests. The only test I changed is `env_home_dir`, where I added code to restore the old home dir after testing.

All moved tests:

| ui test | library test file | test |
| --- | --- | --- |
| `const\ascii_ctype.rs` | `core\tests\ascii.rs` | `ascii_ctype_const` |
| `const\const-str-ptr.rs` | `alloc\tests\str.rs` | `const_str_ptr` |
| `assert-eq-trailing-comma.rs` | `core\tests\macros.rs` | `assert_eq_trailing_comma` |
| `assert-escape.rs` | `core\tests\macros.rs` | `assert_escape` |
| `assert-ne-trailing-comma.rs` | `core\tests\macros.rs` | `assert_ne_trailing_comma` |
| `atomic-access-bool.rs` | `core\tests\atomic.rs` | `atomic_access_bool` |
| `atomic-alignment.rs` | `core\tests\atomic.rs` | `atomic_alignment` |
| `atomic-compare_exchange.rs` | `core\tests\atomic.rs` | `atomic_compare_exchange` |
| ~~`atomic-print.rs`~~ | ~~`std\tests\process.rs`~~ | ~~`atomic_print`~~ |
| `bool.rs` | `core\tests\bool.rs` | `test_bool` |
| `bool_not.rs` | `core\tests\bool.rs` | `test_bool_not` |
| `char_unicode.rs` | `core\tests\unicode.rs` | `version` |
| `cmp-default.rs` | `core\tests\cmp.rs` | `cmp_default` |
| `deref-mut-on-ref.rs` | `core\tests\ops.rs` | `deref_mut_on_ref` |
| `deref-on-ref.rs` | `core\tests\ops.rs` | `deref_on_ref` |
| `env-home-dir.rs` | `std\tests\env.rs` | `env_home_dir` |
| ~~`env-vars.rs`~~ | ~~`std\tests\env.rs`~~ | ~~`env_vars`~~ |
| `extend-for-unit.rs` | `core\tests\iter.rs` | `extend_for_unit` |
| `offset_from.rs` | `core\tests\ptr.rs` | `offset_from` |
| `option-ext.rs` | `core\tests\option.rs` | `option_ext` |
| `result-opt-conversions.rs` | `core\tests\result.rs` | `result_opt_conversions` |
| `sleep.rs` | `std\tests\thread.rs` | `sleep` |
| ~~`try-wait.rs`~~ | ~~`std\tests\process.rs`~~ | ~~`try_wait`~~ |
| `utf8.rs` | `alloc\tests\str.rs` | `utf8` |
| `utf8_chars.rs` | `alloc\tests\str.rs` | `utf8_chars` |
| `wrapping-int-api.rs` | `core\tests\num\wrapping.rs` | `wrapping_int_api` |

library/alloc/tests/str.rs

@@ -1,6 +1,6 @@
 use std::borrow::Cow;
 use std::cmp::Ordering::{Equal, Greater, Less};
-use std::str::from_utf8;
+use std::str::{from_utf8, from_utf8_unchecked};
 
 #[test]
 fn test_le() {
@@ -1971,3 +1971,97 @@ fn test_str_escapes() {
     ";
     assert_eq!(x, r"\\"); // extraneous whitespace stripped
 }
+
+#[test]
+fn const_str_ptr() {
+    const A: [u8; 2] = ['h' as u8, 'i' as u8];
+    const B: &'static [u8; 2] = &A;
+    const C: *const u8 = B as *const u8;
+
+    unsafe {
+        let foo = &A as *const u8;
+        assert_eq!(foo, C);
+        assert_eq!(from_utf8_unchecked(&A), "hi");
+        assert_eq!(*C, A[0]);
+        assert_eq!(*(&B[0] as *const u8), A[0]);
+    }
+}
+
+#[test]
+fn utf8() {
+    let yen: char = '¥'; // 0xa5
+    let c_cedilla: char = 'ç'; // 0xe7
+    let thorn: char = 'þ'; // 0xfe
+    let y_diaeresis: char = 'ÿ'; // 0xff
+    let pi: char = 'Π'; // 0x3a0
+
+    assert_eq!(yen as isize, 0xa5);
+    assert_eq!(c_cedilla as isize, 0xe7);
+    assert_eq!(thorn as isize, 0xfe);
+    assert_eq!(y_diaeresis as isize, 0xff);
+    assert_eq!(pi as isize, 0x3a0);
+
+    assert_eq!(pi as isize, '\u{3a0}' as isize);
+    assert_eq!('\x0a' as isize, '\n' as isize);
+
+    let bhutan: String = "འབྲུག་ཡུལ།".to_string();
+    let japan: String = "日本".to_string();
+    let uzbekistan: String = "Ўзбекистон".to_string();
+    let austria: String = "Österreich".to_string();
+
+    let bhutan_e: String =
+        "\u{f60}\u{f56}\u{fb2}\u{f74}\u{f42}\u{f0b}\u{f61}\u{f74}\u{f63}\u{f0d}".to_string();
+    let japan_e: String = "\u{65e5}\u{672c}".to_string();
+    let uzbekistan_e: String =
+        "\u{40e}\u{437}\u{431}\u{435}\u{43a}\u{438}\u{441}\u{442}\u{43e}\u{43d}".to_string();
+    let austria_e: String = "\u{d6}sterreich".to_string();
+
+    let oo: char = 'Ö';
+    assert_eq!(oo as isize, 0xd6);
+
+    fn check_str_eq(a: String, b: String) {
+        let mut i: isize = 0;
+        for ab in a.bytes() {
+            println!("{}", i);
+            println!("{}", ab);
+            let bb: u8 = b.as_bytes()[i as usize];
+            println!("{}", bb);
+            assert_eq!(ab, bb);
+            i += 1;
+        }
+    }
+
+    check_str_eq(bhutan, bhutan_e);
+    check_str_eq(japan, japan_e);
+    check_str_eq(uzbekistan, uzbekistan_e);
+    check_str_eq(austria, austria_e);
+}
+
+#[test]
+fn utf8_chars() {
+    // Chars of 1, 2, 3, and 4 bytes
+    let chs: Vec<char> = vec!['e', 'é', '€', '\u{10000}'];
+    let s: String = chs.iter().cloned().collect();
+    let schs: Vec<char> = s.chars().collect();
+
+    assert_eq!(s.len(), 10);
+    assert_eq!(s.chars().count(), 4);
+    assert_eq!(schs.len(), 4);
+    assert_eq!(schs.iter().cloned().collect::<String>(), s);
+
+    assert!((from_utf8(s.as_bytes()).is_ok()));
+    // invalid prefix
+    assert!((!from_utf8(&[0x80]).is_ok()));
+    // invalid 2 byte prefix
+    assert!((!from_utf8(&[0xc0]).is_ok()));
+    assert!((!from_utf8(&[0xc0, 0x10]).is_ok()));
+    // invalid 3 byte prefix
+    assert!((!from_utf8(&[0xe0]).is_ok()));
+    assert!((!from_utf8(&[0xe0, 0x10]).is_ok()));
+    assert!((!from_utf8(&[0xe0, 0xff, 0x10]).is_ok()));
+    // invalid 4 byte prefix
+    assert!((!from_utf8(&[0xf0]).is_ok()));
+    assert!((!from_utf8(&[0xf0, 0x10]).is_ok()));
+    assert!((!from_utf8(&[0xf0, 0xff, 0x10]).is_ok()));
+    assert!((!from_utf8(&[0xf0, 0xff, 0xff, 0x10]).is_ok()));
+}

library/core/tests/ascii.rs

@@ -408,3 +408,56 @@ fn ascii_const() {
     const BYTE_IS_ASCII: bool = 97u8.is_ascii();
     assert!(BYTE_IS_ASCII);
 }
+
+#[test]
+fn ascii_ctype_const() {
+    macro_rules! suite {
+        ( $( $fn:ident => [$a:ident, $A:ident, $nine:ident, $dot:ident, $space:ident]; )* ) => {
+            $(
+                mod $fn {
+                    const CHAR_A_LOWER: bool = 'a'.$fn();
+                    const CHAR_A_UPPER: bool = 'A'.$fn();
+                    const CHAR_NINE: bool = '9'.$fn();
+                    const CHAR_DOT: bool = '.'.$fn();
+                    const CHAR_SPACE: bool = ' '.$fn();
+
+                    const U8_A_LOWER: bool = b'a'.$fn();
+                    const U8_A_UPPER: bool = b'A'.$fn();
+                    const U8_NINE: bool = b'9'.$fn();
+                    const U8_DOT: bool = b'.'.$fn();
+                    const U8_SPACE: bool = b' '.$fn();
+
+                    pub fn run() {
+                        assert_eq!(CHAR_A_LOWER, $a);
+                        assert_eq!(CHAR_A_UPPER, $A);
+                        assert_eq!(CHAR_NINE, $nine);
+                        assert_eq!(CHAR_DOT, $dot);
+                        assert_eq!(CHAR_SPACE, $space);
+
+                        assert_eq!(U8_A_LOWER, $a);
+                        assert_eq!(U8_A_UPPER, $A);
+                        assert_eq!(U8_NINE, $nine);
+                        assert_eq!(U8_DOT, $dot);
+                        assert_eq!(U8_SPACE, $space);
+                    }
+                }
+            )*
+
+            $( $fn::run(); )*
+        }
+    }
+
+    suite! {
+        //                        'a'    'A'    '9'    '.'    ' '
+        is_ascii_alphabetic   => [true,  true,  false, false, false];
+        is_ascii_uppercase    => [false, true,  false, false, false];
+        is_ascii_lowercase    => [true,  false, false, false, false];
+        is_ascii_alphanumeric => [true,  true,  true,  false, false];
+        is_ascii_digit        => [false, false, true,  false, false];
+        is_ascii_hexdigit     => [true,  true,  true,  false, false];
+        is_ascii_punctuation  => [false, false, false, true,  false];
+        is_ascii_graphic      => [true,  true,  true,  true,  false];
+        is_ascii_whitespace   => [false, false, false, false, true];
+        is_ascii_control      => [false, false, false, false, false];
+    }
+}

library/core/tests/atomic.rs

@@ -101,3 +101,82 @@ fn static_init() {
     assert!(S_INT.fetch_add(1, SeqCst) == 0);
     assert!(S_UINT.fetch_add(1, SeqCst) == 0);
 }
+
+#[test]
+fn atomic_access_bool() {
+    static mut ATOMIC: AtomicBool = AtomicBool::new(false);
+
+    unsafe {
+        assert_eq!(*ATOMIC.get_mut(), false);
+        ATOMIC.store(true, SeqCst);
+        assert_eq!(*ATOMIC.get_mut(), true);
+        ATOMIC.fetch_or(false, SeqCst);
+        assert_eq!(*ATOMIC.get_mut(), true);
+        ATOMIC.fetch_and(false, SeqCst);
+        assert_eq!(*ATOMIC.get_mut(), false);
+        ATOMIC.fetch_nand(true, SeqCst);
+        assert_eq!(*ATOMIC.get_mut(), true);
+        ATOMIC.fetch_xor(true, SeqCst);
+        assert_eq!(*ATOMIC.get_mut(), false);
+    }
+}
+
+#[test]
+fn atomic_alignment() {
+    use std::mem::{align_of, size_of};
+
+    #[cfg(target_has_atomic = "8")]
+    assert_eq!(align_of::<AtomicBool>(), size_of::<AtomicBool>());
+    #[cfg(target_has_atomic = "ptr")]
+    assert_eq!(align_of::<AtomicPtr<u8>>(), size_of::<AtomicPtr<u8>>());
+    #[cfg(target_has_atomic = "8")]
+    assert_eq!(align_of::<AtomicU8>(), size_of::<AtomicU8>());
+    #[cfg(target_has_atomic = "8")]
+    assert_eq!(align_of::<AtomicI8>(), size_of::<AtomicI8>());
+    #[cfg(target_has_atomic = "16")]
+    assert_eq!(align_of::<AtomicU16>(), size_of::<AtomicU16>());
+    #[cfg(target_has_atomic = "16")]
+    assert_eq!(align_of::<AtomicI16>(), size_of::<AtomicI16>());
+    #[cfg(target_has_atomic = "32")]
+    assert_eq!(align_of::<AtomicU32>(), size_of::<AtomicU32>());
+    #[cfg(target_has_atomic = "32")]
+    assert_eq!(align_of::<AtomicI32>(), size_of::<AtomicI32>());
+    #[cfg(target_has_atomic = "64")]
+    assert_eq!(align_of::<AtomicU64>(), size_of::<AtomicU64>());
+    #[cfg(target_has_atomic = "64")]
+    assert_eq!(align_of::<AtomicI64>(), size_of::<AtomicI64>());
+    #[cfg(target_has_atomic = "128")]
+    assert_eq!(align_of::<AtomicU128>(), size_of::<AtomicU128>());
+    #[cfg(target_has_atomic = "128")]
+    assert_eq!(align_of::<AtomicI128>(), size_of::<AtomicI128>());
+    #[cfg(target_has_atomic = "ptr")]
+    assert_eq!(align_of::<AtomicUsize>(), size_of::<AtomicUsize>());
+    #[cfg(target_has_atomic = "ptr")]
+    assert_eq!(align_of::<AtomicIsize>(), size_of::<AtomicIsize>());
+}
+
+#[test]
+fn atomic_compare_exchange() {
+    use Ordering::*;
+
+    static ATOMIC: AtomicIsize = AtomicIsize::new(0);
+
+    ATOMIC.compare_exchange(0, 1, Relaxed, Relaxed).ok();
+    ATOMIC.compare_exchange(0, 1, Acquire, Relaxed).ok();
+    ATOMIC.compare_exchange(0, 1, Release, Relaxed).ok();
+    ATOMIC.compare_exchange(0, 1, AcqRel, Relaxed).ok();
+    ATOMIC.compare_exchange(0, 1, SeqCst, Relaxed).ok();
+    ATOMIC.compare_exchange(0, 1, Acquire, Acquire).ok();
+    ATOMIC.compare_exchange(0, 1, AcqRel, Acquire).ok();
+    ATOMIC.compare_exchange(0, 1, SeqCst, Acquire).ok();
+    ATOMIC.compare_exchange(0, 1, SeqCst, SeqCst).ok();
+    ATOMIC.compare_exchange_weak(0, 1, Relaxed, Relaxed).ok();
+    ATOMIC.compare_exchange_weak(0, 1, Acquire, Relaxed).ok();
+    ATOMIC.compare_exchange_weak(0, 1, Release, Relaxed).ok();
+    ATOMIC.compare_exchange_weak(0, 1, AcqRel, Relaxed).ok();
+    ATOMIC.compare_exchange_weak(0, 1, SeqCst, Relaxed).ok();
+    ATOMIC.compare_exchange_weak(0, 1, Acquire, Acquire).ok();
+    ATOMIC.compare_exchange_weak(0, 1, AcqRel, Acquire).ok();
+    ATOMIC.compare_exchange_weak(0, 1, SeqCst, Acquire).ok();
+    ATOMIC.compare_exchange_weak(0, 1, SeqCst, SeqCst).ok();
+}

library/core/tests/bool.rs

@@ -1,3 +1,87 @@
+use core::cmp::Ordering::{Equal, Greater, Less};
+use core::ops::{BitAnd, BitOr, BitXor};
+
+#[test]
+fn test_bool() {
+    assert_eq!(false.eq(&true), false);
+    assert_eq!(false == false, true);
+    assert_eq!(false != true, true);
+    assert_eq!(false.ne(&false), false);
+
+    assert_eq!(false.bitand(false), false);
+    assert_eq!(true.bitand(false), false);
+    assert_eq!(false.bitand(true), false);
+    assert_eq!(true.bitand(true), true);
+
+    assert_eq!(false & false, false);
+    assert_eq!(true & false, false);
+    assert_eq!(false & true, false);
+    assert_eq!(true & true, true);
+
+    assert_eq!(false.bitor(false), false);
+    assert_eq!(true.bitor(false), true);
+    assert_eq!(false.bitor(true), true);
+    assert_eq!(true.bitor(true), true);
+
+    assert_eq!(false | false, false);
+    assert_eq!(true | false, true);
+    assert_eq!(false | true, true);
+    assert_eq!(true | true, true);
+
+    assert_eq!(false.bitxor(false), false);
+    assert_eq!(true.bitxor(false), true);
+    assert_eq!(false.bitxor(true), true);
+    assert_eq!(true.bitxor(true), false);
+
+    assert_eq!(false ^ false, false);
+    assert_eq!(true ^ false, true);
+    assert_eq!(false ^ true, true);
+    assert_eq!(true ^ true, false);
+
+    assert_eq!(!true, false);
+    assert_eq!(!false, true);
+
+    let s = false.to_string();
+    assert_eq!(s, "false");
+    let s = true.to_string();
+    assert_eq!(s, "true");
+
+    assert!(true > false);
+    assert!(!(false > true));
+
+    assert!(false < true);
+    assert!(!(true < false));
+
+    assert!(false <= false);
+    assert!(false >= false);
+    assert!(true <= true);
+    assert!(true >= true);
+
+    assert!(false <= true);
+    assert!(!(false >= true));
+    assert!(true >= false);
+    assert!(!(true <= false));
+
+    assert_eq!(true.cmp(&true), Equal);
+    assert_eq!(false.cmp(&false), Equal);
+    assert_eq!(true.cmp(&false), Greater);
+    assert_eq!(false.cmp(&true), Less);
+}
+
+#[test]
+pub fn test_bool_not() {
+    if !false {
+        assert!((true));
+    } else {
+        assert!((false));
+    }
+    if !true {
+        assert!((false));
+    } else {
+        assert!((true));
+    }
+}
+
 #[test]
 fn test_bool_to_option() {
     assert_eq!(false.then_some(0), None);