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-rw-r--r--src/lib.rs87
1 files changed, 83 insertions, 4 deletions
diff --git a/src/lib.rs b/src/lib.rs
index 228b7e1..8bfcd29 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -518,16 +518,95 @@ mod tests
}
#[test]
- fn works()
+ fn single_push_works()
{
let mut multi_vec = MultiVec::<Foo>::new();
multi_vec.push(Foo { num_a: 123, num_b: 654 });
- multi_vec.push(Foo { num_a: 12338, num_b: 191 });
+ assert_eq!(multi_vec.capacity, 1);
+ assert_eq!(multi_vec.length, 1);
- let item = multi_vec.get::<FooFieldNumA>(1).unwrap();
+ assert_eq!(multi_vec.field_arr_byte_offsets, [0, size_of::<u32>()]);
- println!("yay: {}", *item);
+ assert_eq!(
+ unsafe {
+ std::slice::from_raw_parts::<u32>(multi_vec.ptr.as_ptr().cast(), 1)
+ },
+ [123]
+ );
+
+ assert_eq!(
+ unsafe {
+ std::slice::from_raw_parts::<u16>(
+ multi_vec.ptr.as_ptr().byte_add(size_of::<u32>()).cast(),
+ 1,
+ )
+ },
+ [654]
+ );
+ }
+
+ #[test]
+ fn multiple_pushes_works()
+ {
+ let mut multi_vec = MultiVec::<Foo>::new();
+
+ multi_vec.push(Foo { num_a: u32::MAX / 2, num_b: 654 });
+ multi_vec.push(Foo { num_a: 765, num_b: u16::MAX / 3 });
+ multi_vec.push(Foo { num_a: u32::MAX / 5, num_b: 337 });
+
+ assert_eq!(multi_vec.capacity, 4);
+ assert_eq!(multi_vec.length, 3);
+
+ assert_eq!(multi_vec.field_arr_byte_offsets, [0, size_of::<u32>() * 4]);
+
+ assert_eq!(
+ unsafe {
+ std::slice::from_raw_parts::<u32>(multi_vec.ptr.as_ptr().cast(), 3)
+ },
+ [u32::MAX / 2, 765, u32::MAX / 5]
+ );
+
+ assert_eq!(
+ unsafe {
+ std::slice::from_raw_parts::<u16>(
+ multi_vec.ptr.as_ptr().byte_add(size_of::<u32>() * 4).cast(),
+ 3,
+ )
+ },
+ [654, u16::MAX / 3, 337]
+ );
+ }
+
+ #[test]
+ fn multiple_pushes_in_preallocated_works()
+ {
+ let mut multi_vec = MultiVec::<Foo>::with_capacity(2);
+
+ multi_vec.push(Foo { num_a: 83710000, num_b: 654 });
+ multi_vec.push(Foo { num_a: 765, num_b: u16::MAX / 7 });
+
+ assert_eq!(multi_vec.capacity, 2);
+ assert_eq!(multi_vec.length, 2);
+
+ assert_eq!(multi_vec.field_arr_byte_offsets, [0, size_of::<u32>() * 2]);
+
+ assert_eq!(
+ unsafe {
+ std::slice::from_raw_parts::<u32>(multi_vec.ptr.as_ptr().cast(), 2)
+ },
+ [83710000, 765]
+ );
+
+ assert_eq!(
+ unsafe {
+ std::slice::from_raw_parts::<u16>(
+ multi_vec.ptr.as_ptr().byte_add(size_of::<u32>() * 2).cast(),
+ 2,
+ )
+ },
+ [654, u16::MAX / 7]
+ );
}
}