summaryrefslogtreecommitdiffstats
path: root/third_party/rust/arrayvec/tests
diff options
context:
space:
mode:
Diffstat (limited to 'third_party/rust/arrayvec/tests')
-rw-r--r--third_party/rust/arrayvec/tests/serde.rs79
-rw-r--r--third_party/rust/arrayvec/tests/tests.rs793
2 files changed, 872 insertions, 0 deletions
diff --git a/third_party/rust/arrayvec/tests/serde.rs b/third_party/rust/arrayvec/tests/serde.rs
new file mode 100644
index 0000000000..f02c693a0f
--- /dev/null
+++ b/third_party/rust/arrayvec/tests/serde.rs
@@ -0,0 +1,79 @@
+#![cfg(feature = "serde")]
+extern crate arrayvec;
+extern crate serde_test;
+
+mod array_vec {
+ use arrayvec::ArrayVec;
+
+ use serde_test::{Token, assert_tokens, assert_de_tokens_error};
+
+ #[test]
+ fn test_ser_de_empty() {
+ let vec = ArrayVec::<u32, 0>::new();
+
+ assert_tokens(&vec, &[
+ Token::Seq { len: Some(0) },
+ Token::SeqEnd,
+ ]);
+ }
+
+
+ #[test]
+ fn test_ser_de() {
+ let mut vec = ArrayVec::<u32, 3>::new();
+ vec.push(20);
+ vec.push(55);
+ vec.push(123);
+
+ assert_tokens(&vec, &[
+ Token::Seq { len: Some(3) },
+ Token::U32(20),
+ Token::U32(55),
+ Token::U32(123),
+ Token::SeqEnd,
+ ]);
+ }
+
+ #[test]
+ fn test_de_too_large() {
+ assert_de_tokens_error::<ArrayVec<u32, 2>>(&[
+ Token::Seq { len: Some(3) },
+ Token::U32(13),
+ Token::U32(42),
+ Token::U32(68),
+ ], "invalid length 3, expected an array with no more than 2 items");
+ }
+}
+
+mod array_string {
+ use arrayvec::ArrayString;
+
+ use serde_test::{Token, assert_tokens, assert_de_tokens_error};
+
+ #[test]
+ fn test_ser_de_empty() {
+ let string = ArrayString::<0>::new();
+
+ assert_tokens(&string, &[
+ Token::Str(""),
+ ]);
+ }
+
+
+ #[test]
+ fn test_ser_de() {
+ let string = ArrayString::<9>::from("1234 abcd")
+ .expect("expected exact specified capacity to be enough");
+
+ assert_tokens(&string, &[
+ Token::Str("1234 abcd"),
+ ]);
+ }
+
+ #[test]
+ fn test_de_too_large() {
+ assert_de_tokens_error::<ArrayString<2>>(&[
+ Token::Str("afd")
+ ], "invalid length 3, expected a string no more than 2 bytes long");
+ }
+}
diff --git a/third_party/rust/arrayvec/tests/tests.rs b/third_party/rust/arrayvec/tests/tests.rs
new file mode 100644
index 0000000000..2f8a5ef52e
--- /dev/null
+++ b/third_party/rust/arrayvec/tests/tests.rs
@@ -0,0 +1,793 @@
+extern crate arrayvec;
+#[macro_use] extern crate matches;
+
+use arrayvec::ArrayVec;
+use arrayvec::ArrayString;
+use std::mem;
+use arrayvec::CapacityError;
+
+use std::collections::HashMap;
+
+
+#[test]
+fn test_simple() {
+ use std::ops::Add;
+
+ let mut vec: ArrayVec<Vec<i32>, 3> = ArrayVec::new();
+
+ vec.push(vec![1, 2, 3, 4]);
+ vec.push(vec![10]);
+ vec.push(vec![-1, 13, -2]);
+
+ for elt in &vec {
+ assert_eq!(elt.iter().fold(0, Add::add), 10);
+ }
+
+ let sum_len = vec.into_iter().map(|x| x.len()).fold(0, Add::add);
+ assert_eq!(sum_len, 8);
+}
+
+#[test]
+fn test_capacity_left() {
+ let mut vec: ArrayVec<usize, 4> = ArrayVec::new();
+ assert_eq!(vec.remaining_capacity(), 4);
+ vec.push(1);
+ assert_eq!(vec.remaining_capacity(), 3);
+ vec.push(2);
+ assert_eq!(vec.remaining_capacity(), 2);
+ vec.push(3);
+ assert_eq!(vec.remaining_capacity(), 1);
+ vec.push(4);
+ assert_eq!(vec.remaining_capacity(), 0);
+}
+
+#[test]
+fn test_extend_from_slice() {
+ let mut vec: ArrayVec<usize, 10> = ArrayVec::new();
+
+ vec.try_extend_from_slice(&[1, 2, 3]).unwrap();
+ assert_eq!(vec.len(), 3);
+ assert_eq!(&vec[..], &[1, 2, 3]);
+ assert_eq!(vec.pop(), Some(3));
+ assert_eq!(&vec[..], &[1, 2]);
+}
+
+#[test]
+fn test_extend_from_slice_error() {
+ let mut vec: ArrayVec<usize, 10> = ArrayVec::new();
+
+ vec.try_extend_from_slice(&[1, 2, 3]).unwrap();
+ let res = vec.try_extend_from_slice(&[0; 8]);
+ assert_matches!(res, Err(_));
+
+ let mut vec: ArrayVec<usize, 0> = ArrayVec::new();
+ let res = vec.try_extend_from_slice(&[0; 1]);
+ assert_matches!(res, Err(_));
+}
+
+#[test]
+fn test_try_from_slice_error() {
+ use arrayvec::ArrayVec;
+ use std::convert::TryInto as _;
+
+ let res: Result<ArrayVec<_, 2>, _> = (&[1, 2, 3] as &[_]).try_into();
+ assert_matches!(res, Err(_));
+}
+
+#[test]
+fn test_u16_index() {
+ const N: usize = 4096;
+ let mut vec: ArrayVec<_, N> = ArrayVec::new();
+ for _ in 0..N {
+ assert!(vec.try_push(1u8).is_ok());
+ }
+ assert!(vec.try_push(0).is_err());
+ assert_eq!(vec.len(), N);
+}
+
+#[test]
+fn test_iter() {
+ let mut iter = ArrayVec::from([1, 2, 3]).into_iter();
+ assert_eq!(iter.size_hint(), (3, Some(3)));
+ assert_eq!(iter.next_back(), Some(3));
+ assert_eq!(iter.next(), Some(1));
+ assert_eq!(iter.next_back(), Some(2));
+ assert_eq!(iter.size_hint(), (0, Some(0)));
+ assert_eq!(iter.next_back(), None);
+}
+
+#[test]
+fn test_drop() {
+ use std::cell::Cell;
+
+ let flag = &Cell::new(0);
+
+ #[derive(Clone)]
+ struct Bump<'a>(&'a Cell<i32>);
+
+ impl<'a> Drop for Bump<'a> {
+ fn drop(&mut self) {
+ let n = self.0.get();
+ self.0.set(n + 1);
+ }
+ }
+
+ {
+ let mut array = ArrayVec::<Bump, 128>::new();
+ array.push(Bump(flag));
+ array.push(Bump(flag));
+ }
+ assert_eq!(flag.get(), 2);
+
+ // test something with the nullable pointer optimization
+ flag.set(0);
+
+ {
+ let mut array = ArrayVec::<_, 3>::new();
+ array.push(vec![Bump(flag)]);
+ array.push(vec![Bump(flag), Bump(flag)]);
+ array.push(vec![]);
+ let push4 = array.try_push(vec![Bump(flag)]);
+ assert_eq!(flag.get(), 0);
+ drop(push4);
+ assert_eq!(flag.get(), 1);
+ drop(array.pop());
+ assert_eq!(flag.get(), 1);
+ drop(array.pop());
+ assert_eq!(flag.get(), 3);
+ }
+
+ assert_eq!(flag.get(), 4);
+
+ // test into_inner
+ flag.set(0);
+ {
+ let mut array = ArrayVec::<_, 3>::new();
+ array.push(Bump(flag));
+ array.push(Bump(flag));
+ array.push(Bump(flag));
+ let inner = array.into_inner();
+ assert!(inner.is_ok());
+ assert_eq!(flag.get(), 0);
+ drop(inner);
+ assert_eq!(flag.get(), 3);
+ }
+
+ // test take
+ flag.set(0);
+ {
+ let mut array1 = ArrayVec::<_, 3>::new();
+ array1.push(Bump(flag));
+ array1.push(Bump(flag));
+ array1.push(Bump(flag));
+ let array2 = array1.take();
+ assert_eq!(flag.get(), 0);
+ drop(array1);
+ assert_eq!(flag.get(), 0);
+ drop(array2);
+ assert_eq!(flag.get(), 3);
+ }
+
+ // test cloning into_iter
+ flag.set(0);
+ {
+ let mut array = ArrayVec::<_, 3>::new();
+ array.push(Bump(flag));
+ array.push(Bump(flag));
+ array.push(Bump(flag));
+ let mut iter = array.into_iter();
+ assert_eq!(flag.get(), 0);
+ iter.next();
+ assert_eq!(flag.get(), 1);
+ let clone = iter.clone();
+ assert_eq!(flag.get(), 1);
+ drop(clone);
+ assert_eq!(flag.get(), 3);
+ drop(iter);
+ assert_eq!(flag.get(), 5);
+ }
+}
+
+#[test]
+fn test_drop_panics() {
+ use std::cell::Cell;
+ use std::panic::catch_unwind;
+ use std::panic::AssertUnwindSafe;
+
+ let flag = &Cell::new(0);
+
+ struct Bump<'a>(&'a Cell<i32>);
+
+ // Panic in the first drop
+ impl<'a> Drop for Bump<'a> {
+ fn drop(&mut self) {
+ let n = self.0.get();
+ self.0.set(n + 1);
+ if n == 0 {
+ panic!("Panic in Bump's drop");
+ }
+ }
+ }
+ // check if rust is new enough
+ flag.set(0);
+ {
+ let array = vec![Bump(flag), Bump(flag)];
+ let res = catch_unwind(AssertUnwindSafe(|| {
+ drop(array);
+ }));
+ assert!(res.is_err());
+ }
+
+ if flag.get() != 2 {
+ println!("test_drop_panics: skip, this version of Rust doesn't continue in drop_in_place");
+ return;
+ }
+
+ flag.set(0);
+ {
+ let mut array = ArrayVec::<Bump, 128>::new();
+ array.push(Bump(flag));
+ array.push(Bump(flag));
+ array.push(Bump(flag));
+
+ let res = catch_unwind(AssertUnwindSafe(|| {
+ drop(array);
+ }));
+ assert!(res.is_err());
+ }
+ // Check that all the elements drop, even if the first drop panics.
+ assert_eq!(flag.get(), 3);
+
+
+ flag.set(0);
+ {
+ let mut array = ArrayVec::<Bump, 16>::new();
+ array.push(Bump(flag));
+ array.push(Bump(flag));
+ array.push(Bump(flag));
+ array.push(Bump(flag));
+ array.push(Bump(flag));
+
+ let i = 2;
+ let tail_len = array.len() - i;
+
+ let res = catch_unwind(AssertUnwindSafe(|| {
+ array.truncate(i);
+ }));
+ assert!(res.is_err());
+ // Check that all the tail elements drop, even if the first drop panics.
+ assert_eq!(flag.get(), tail_len as i32);
+ }
+
+
+}
+
+#[test]
+fn test_extend() {
+ let mut range = 0..10;
+
+ let mut array: ArrayVec<_, 5> = range.by_ref().take(5).collect();
+ assert_eq!(&array[..], &[0, 1, 2, 3, 4]);
+ assert_eq!(range.next(), Some(5));
+
+ array.extend(range.by_ref().take(0));
+ assert_eq!(range.next(), Some(6));
+
+ let mut array: ArrayVec<_, 10> = (0..3).collect();
+ assert_eq!(&array[..], &[0, 1, 2]);
+ array.extend(3..5);
+ assert_eq!(&array[..], &[0, 1, 2, 3, 4]);
+}
+
+#[should_panic]
+#[test]
+fn test_extend_capacity_panic_1() {
+ let mut range = 0..10;
+
+ let _: ArrayVec<_, 5> = range.by_ref().collect();
+}
+
+#[should_panic]
+#[test]
+fn test_extend_capacity_panic_2() {
+ let mut range = 0..10;
+
+ let mut array: ArrayVec<_, 5> = range.by_ref().take(5).collect();
+ assert_eq!(&array[..], &[0, 1, 2, 3, 4]);
+ assert_eq!(range.next(), Some(5));
+ array.extend(range.by_ref().take(1));
+}
+
+#[test]
+fn test_is_send_sync() {
+ let data = ArrayVec::<Vec<i32>, 5>::new();
+ &data as &dyn Send;
+ &data as &dyn Sync;
+}
+
+#[test]
+fn test_compact_size() {
+ // 4 bytes + padding + length
+ type ByteArray = ArrayVec<u8, 4>;
+ println!("{}", mem::size_of::<ByteArray>());
+ assert!(mem::size_of::<ByteArray>() <= 2 * mem::size_of::<u32>());
+
+ // just length
+ type EmptyArray = ArrayVec<u8, 0>;
+ println!("{}", mem::size_of::<EmptyArray>());
+ assert!(mem::size_of::<EmptyArray>() <= mem::size_of::<u32>());
+
+ // 3 elements + padding + length
+ type QuadArray = ArrayVec<u32, 3>;
+ println!("{}", mem::size_of::<QuadArray>());
+ assert!(mem::size_of::<QuadArray>() <= 4 * 4 + mem::size_of::<u32>());
+}
+
+#[test]
+fn test_still_works_with_option_arrayvec() {
+ type RefArray = ArrayVec<&'static i32, 2>;
+ let array = Some(RefArray::new());
+ assert!(array.is_some());
+ println!("{:?}", array);
+}
+
+#[test]
+fn test_drain() {
+ let mut v = ArrayVec::from([0; 8]);
+ v.pop();
+ v.drain(0..7);
+ assert_eq!(&v[..], &[]);
+
+ v.extend(0..8);
+ v.drain(1..4);
+ assert_eq!(&v[..], &[0, 4, 5, 6, 7]);
+ let u: ArrayVec<_, 3> = v.drain(1..4).rev().collect();
+ assert_eq!(&u[..], &[6, 5, 4]);
+ assert_eq!(&v[..], &[0, 7]);
+ v.drain(..);
+ assert_eq!(&v[..], &[]);
+}
+
+#[test]
+fn test_drain_range_inclusive() {
+ let mut v = ArrayVec::from([0; 8]);
+ v.drain(0..=7);
+ assert_eq!(&v[..], &[]);
+
+ v.extend(0..8);
+ v.drain(1..=4);
+ assert_eq!(&v[..], &[0, 5, 6, 7]);
+ let u: ArrayVec<_, 3> = v.drain(1..=2).rev().collect();
+ assert_eq!(&u[..], &[6, 5]);
+ assert_eq!(&v[..], &[0, 7]);
+ v.drain(..);
+ assert_eq!(&v[..], &[]);
+}
+
+#[test]
+#[should_panic]
+fn test_drain_range_inclusive_oob() {
+ let mut v = ArrayVec::from([0; 0]);
+ v.drain(0..=0);
+}
+
+#[test]
+fn test_retain() {
+ let mut v = ArrayVec::from([0; 8]);
+ for (i, elt) in v.iter_mut().enumerate() {
+ *elt = i;
+ }
+ v.retain(|_| true);
+ assert_eq!(&v[..], &[0, 1, 2, 3, 4, 5, 6, 7]);
+ v.retain(|elt| {
+ *elt /= 2;
+ *elt % 2 == 0
+ });
+ assert_eq!(&v[..], &[0, 0, 2, 2]);
+ v.retain(|_| false);
+ assert_eq!(&v[..], &[]);
+}
+
+#[test]
+#[should_panic]
+fn test_drain_oob() {
+ let mut v = ArrayVec::from([0; 8]);
+ v.pop();
+ v.drain(0..8);
+}
+
+#[test]
+#[should_panic]
+fn test_drop_panic() {
+ struct DropPanic;
+
+ impl Drop for DropPanic {
+ fn drop(&mut self) {
+ panic!("drop");
+ }
+ }
+
+ let mut array = ArrayVec::<DropPanic, 1>::new();
+ array.push(DropPanic);
+}
+
+#[test]
+#[should_panic]
+fn test_drop_panic_into_iter() {
+ struct DropPanic;
+
+ impl Drop for DropPanic {
+ fn drop(&mut self) {
+ panic!("drop");
+ }
+ }
+
+ let mut array = ArrayVec::<DropPanic, 1>::new();
+ array.push(DropPanic);
+ array.into_iter();
+}
+
+#[test]
+fn test_insert() {
+ let mut v = ArrayVec::from([]);
+ assert_matches!(v.try_push(1), Err(_));
+
+ let mut v = ArrayVec::<_, 3>::new();
+ v.insert(0, 0);
+ v.insert(1, 1);
+ //let ret1 = v.try_insert(3, 3);
+ //assert_matches!(ret1, Err(InsertError::OutOfBounds(_)));
+ assert_eq!(&v[..], &[0, 1]);
+ v.insert(2, 2);
+ assert_eq!(&v[..], &[0, 1, 2]);
+
+ let ret2 = v.try_insert(1, 9);
+ assert_eq!(&v[..], &[0, 1, 2]);
+ assert_matches!(ret2, Err(_));
+
+ let mut v = ArrayVec::from([2]);
+ assert_matches!(v.try_insert(0, 1), Err(CapacityError { .. }));
+ assert_matches!(v.try_insert(1, 1), Err(CapacityError { .. }));
+ //assert_matches!(v.try_insert(2, 1), Err(CapacityError { .. }));
+}
+
+#[test]
+fn test_into_inner_1() {
+ let mut v = ArrayVec::from([1, 2]);
+ v.pop();
+ let u = v.clone();
+ assert_eq!(v.into_inner(), Err(u));
+}
+
+#[test]
+fn test_into_inner_2() {
+ let mut v = ArrayVec::<String, 4>::new();
+ v.push("a".into());
+ v.push("b".into());
+ v.push("c".into());
+ v.push("d".into());
+ assert_eq!(v.into_inner().unwrap(), ["a", "b", "c", "d"]);
+}
+
+#[test]
+fn test_into_inner_3() {
+ let mut v = ArrayVec::<i32, 4>::new();
+ v.extend(1..=4);
+ assert_eq!(v.into_inner().unwrap(), [1, 2, 3, 4]);
+}
+
+#[test]
+fn test_take() {
+ let mut v1 = ArrayVec::<i32, 4>::new();
+ v1.extend(1..=4);
+ let v2 = v1.take();
+ assert!(v1.into_inner().is_err());
+ assert_eq!(v2.into_inner().unwrap(), [1, 2, 3, 4]);
+}
+
+#[cfg(feature="std")]
+#[test]
+fn test_write() {
+ use std::io::Write;
+ let mut v = ArrayVec::<_, 8>::new();
+ write!(&mut v, "\x01\x02\x03").unwrap();
+ assert_eq!(&v[..], &[1, 2, 3]);
+ let r = v.write(&[9; 16]).unwrap();
+ assert_eq!(r, 5);
+ assert_eq!(&v[..], &[1, 2, 3, 9, 9, 9, 9, 9]);
+}
+
+#[test]
+fn array_clone_from() {
+ let mut v = ArrayVec::<_, 4>::new();
+ v.push(vec![1, 2]);
+ v.push(vec![3, 4, 5]);
+ v.push(vec![6]);
+ let reference = v.to_vec();
+ let mut u = ArrayVec::<_, 4>::new();
+ u.clone_from(&v);
+ assert_eq!(&u, &reference[..]);
+
+ let mut t = ArrayVec::<_, 4>::new();
+ t.push(vec![97]);
+ t.push(vec![]);
+ t.push(vec![5, 6, 2]);
+ t.push(vec![2]);
+ t.clone_from(&v);
+ assert_eq!(&t, &reference[..]);
+ t.clear();
+ t.clone_from(&v);
+ assert_eq!(&t, &reference[..]);
+}
+
+#[cfg(feature="std")]
+#[test]
+fn test_string() {
+ use std::error::Error;
+
+ let text = "hello world";
+ let mut s = ArrayString::<16>::new();
+ s.try_push_str(text).unwrap();
+ assert_eq!(&s, text);
+ assert_eq!(text, &s);
+
+ // Make sure Hash / Eq / Borrow match up so we can use HashMap
+ let mut map = HashMap::new();
+ map.insert(s, 1);
+ assert_eq!(map[text], 1);
+
+ let mut t = ArrayString::<2>::new();
+ assert!(t.try_push_str(text).is_err());
+ assert_eq!(&t, "");
+
+ t.push_str("ab");
+ // DerefMut
+ let tmut: &mut str = &mut t;
+ assert_eq!(tmut, "ab");
+
+ // Test Error trait / try
+ let t = || -> Result<(), Box<dyn Error>> {
+ let mut t = ArrayString::<2>::new();
+ t.try_push_str(text)?;
+ Ok(())
+ }();
+ assert!(t.is_err());
+}
+
+#[test]
+fn test_string_from() {
+ let text = "hello world";
+ // Test `from` constructor
+ let u = ArrayString::<11>::from(text).unwrap();
+ assert_eq!(&u, text);
+ assert_eq!(u.len(), text.len());
+}
+
+#[test]
+fn test_string_parse_from_str() {
+ let text = "hello world";
+ let u: ArrayString<11> = text.parse().unwrap();
+ assert_eq!(&u, text);
+ assert_eq!(u.len(), text.len());
+}
+
+#[test]
+fn test_string_from_bytes() {
+ let text = "hello world";
+ let u = ArrayString::from_byte_string(b"hello world").unwrap();
+ assert_eq!(&u, text);
+ assert_eq!(u.len(), text.len());
+}
+
+#[test]
+fn test_string_clone() {
+ let text = "hi";
+ let mut s = ArrayString::<4>::new();
+ s.push_str("abcd");
+ let t = ArrayString::<4>::from(text).unwrap();
+ s.clone_from(&t);
+ assert_eq!(&t, &s);
+}
+
+#[test]
+fn test_string_push() {
+ let text = "abcαβγ";
+ let mut s = ArrayString::<8>::new();
+ for c in text.chars() {
+ if let Err(_) = s.try_push(c) {
+ break;
+ }
+ }
+ assert_eq!("abcαβ", &s[..]);
+ s.push('x');
+ assert_eq!("abcαβx", &s[..]);
+ assert!(s.try_push('x').is_err());
+}
+
+
+#[test]
+fn test_insert_at_length() {
+ let mut v = ArrayVec::<_, 8>::new();
+ let result1 = v.try_insert(0, "a");
+ let result2 = v.try_insert(1, "b");
+ assert!(result1.is_ok() && result2.is_ok());
+ assert_eq!(&v[..], &["a", "b"]);
+}
+
+#[should_panic]
+#[test]
+fn test_insert_out_of_bounds() {
+ let mut v = ArrayVec::<_, 8>::new();
+ let _ = v.try_insert(1, "test");
+}
+
+/*
+ * insert that pushes out the last
+ let mut u = ArrayVec::from([1, 2, 3, 4]);
+ let ret = u.try_insert(3, 99);
+ assert_eq!(&u[..], &[1, 2, 3, 99]);
+ assert_matches!(ret, Err(_));
+ let ret = u.try_insert(4, 77);
+ assert_eq!(&u[..], &[1, 2, 3, 99]);
+ assert_matches!(ret, Err(_));
+*/
+
+#[test]
+fn test_drop_in_insert() {
+ use std::cell::Cell;
+
+ let flag = &Cell::new(0);
+
+ struct Bump<'a>(&'a Cell<i32>);
+
+ impl<'a> Drop for Bump<'a> {
+ fn drop(&mut self) {
+ let n = self.0.get();
+ self.0.set(n + 1);
+ }
+ }
+
+ flag.set(0);
+
+ {
+ let mut array = ArrayVec::<_, 2>::new();
+ array.push(Bump(flag));
+ array.insert(0, Bump(flag));
+ assert_eq!(flag.get(), 0);
+ let ret = array.try_insert(1, Bump(flag));
+ assert_eq!(flag.get(), 0);
+ assert_matches!(ret, Err(_));
+ drop(ret);
+ assert_eq!(flag.get(), 1);
+ }
+ assert_eq!(flag.get(), 3);
+}
+
+#[test]
+fn test_pop_at() {
+ let mut v = ArrayVec::<String, 4>::new();
+ let s = String::from;
+ v.push(s("a"));
+ v.push(s("b"));
+ v.push(s("c"));
+ v.push(s("d"));
+
+ assert_eq!(v.pop_at(4), None);
+ assert_eq!(v.pop_at(1), Some(s("b")));
+ assert_eq!(v.pop_at(1), Some(s("c")));
+ assert_eq!(v.pop_at(2), None);
+ assert_eq!(&v[..], &["a", "d"]);
+}
+
+#[test]
+fn test_sizes() {
+ let v = ArrayVec::from([0u8; 1 << 16]);
+ assert_eq!(vec![0u8; v.len()], &v[..]);
+}
+
+#[test]
+fn test_default() {
+ use std::net;
+ let s: ArrayString<4> = Default::default();
+ // Something without `Default` implementation.
+ let v: ArrayVec<net::TcpStream, 4> = Default::default();
+ assert_eq!(s.len(), 0);
+ assert_eq!(v.len(), 0);
+}
+
+#[cfg(feature="array-sizes-33-128")]
+#[test]
+fn test_sizes_33_128() {
+ ArrayVec::from([0u8; 52]);
+ ArrayVec::from([0u8; 127]);
+}
+
+#[cfg(feature="array-sizes-129-255")]
+#[test]
+fn test_sizes_129_255() {
+ ArrayVec::from([0u8; 237]);
+ ArrayVec::from([0u8; 255]);
+}
+
+#[test]
+fn test_extend_zst() {
+ let mut range = 0..10;
+ #[derive(Copy, Clone, PartialEq, Debug)]
+ struct Z; // Zero sized type
+
+ let mut array: ArrayVec<_, 5> = range.by_ref().take(5).map(|_| Z).collect();
+ assert_eq!(&array[..], &[Z; 5]);
+ assert_eq!(range.next(), Some(5));
+
+ array.extend(range.by_ref().take(0).map(|_| Z));
+ assert_eq!(range.next(), Some(6));
+
+ let mut array: ArrayVec<_, 10> = (0..3).map(|_| Z).collect();
+ assert_eq!(&array[..], &[Z; 3]);
+ array.extend((3..5).map(|_| Z));
+ assert_eq!(&array[..], &[Z; 5]);
+ assert_eq!(array.len(), 5);
+}
+
+#[test]
+fn test_try_from_argument() {
+ use core::convert::TryFrom;
+ let v = ArrayString::<16>::try_from(format_args!("Hello {}", 123)).unwrap();
+ assert_eq!(&v, "Hello 123");
+}
+
+#[test]
+fn allow_max_capacity_arrayvec_type() {
+ // this type is allowed to be used (but can't be constructed)
+ let _v: ArrayVec<(), {usize::MAX}>;
+}
+
+#[should_panic(expected="largest supported capacity")]
+#[test]
+fn deny_max_capacity_arrayvec_value() {
+ if mem::size_of::<usize>() <= mem::size_of::<u32>() {
+ panic!("This test does not work on this platform. 'largest supported capacity'");
+ }
+ // this type is allowed to be used (but can't be constructed)
+ let _v: ArrayVec<(), {usize::MAX}> = ArrayVec::new();
+}
+
+#[should_panic(expected="index out of bounds")]
+#[test]
+fn deny_max_capacity_arrayvec_value_const() {
+ if mem::size_of::<usize>() <= mem::size_of::<u32>() {
+ panic!("This test does not work on this platform. 'index out of bounds'");
+ }
+ // this type is allowed to be used (but can't be constructed)
+ let _v: ArrayVec<(), {usize::MAX}> = ArrayVec::new_const();
+}
+
+#[test]
+fn test_arrayvec_const_constructible() {
+ const OF_U8: ArrayVec<Vec<u8>, 10> = ArrayVec::new_const();
+
+ let mut var = OF_U8;
+ assert!(var.is_empty());
+ assert_eq!(var, ArrayVec::new());
+ var.push(vec![3, 5, 8]);
+ assert_eq!(var[..], [vec![3, 5, 8]]);
+}
+
+#[test]
+fn test_arraystring_const_constructible() {
+ const AS: ArrayString<10> = ArrayString::new_const();
+
+ let mut var = AS;
+ assert!(var.is_empty());
+ assert_eq!(var, ArrayString::new());
+ var.push_str("hello");
+ assert_eq!(var, *"hello");
+}
+
+
+#[test]
+fn test_arraystring_zero_filled_has_some_sanity_checks() {
+ let string = ArrayString::<4>::zero_filled();
+ assert_eq!(string.as_str(), "\0\0\0\0");
+ assert_eq!(string.len(), 4);
+} \ No newline at end of file
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-29 02:11:35 +0000