From c9f95836072d4bb0e0112dc252ef1367e0d8616e Mon Sep 17 00:00:00 2001
From: tbro <48967308+tbro@users.noreply.github.com>
Date: Mon, 25 Nov 2024 17:03:34 -0300
Subject: [PATCH] Add `from_bytes` method. (#2329)

* Add `from_bytes_unchecked` method.

Closes #2327

---------

Co-authored-by: tbro <tbro@users.noreply.github.com>
---
 types/src/v0/impls/block/full_payload/ns_table.rs      | 7 +++++++
 types/src/v0/impls/block/full_payload/ns_table/test.rs | 7 +++++++
 2 files changed, 14 insertions(+)

diff --git a/types/src/v0/impls/block/full_payload/ns_table.rs b/types/src/v0/impls/block/full_payload/ns_table.rs
index 994d68710b..bbab22eb85 100644
--- a/types/src/v0/impls/block/full_payload/ns_table.rs
+++ b/types/src/v0/impls/block/full_payload/ns_table.rs
@@ -100,6 +100,13 @@ impl NsTable {
         self.len().in_bounds(index)
     }
 
+    /// Instantiate an `NsTable` from a byte slice.
+    pub fn from_bytes_unchecked(bytes: &[u8]) -> NsTable {
+        NsTable {
+            bytes: bytes.to_vec(),
+        }
+    }
+
     /// Are the bytes of this [`NsTable`] uncorrupted?
     ///
     /// # Checks
diff --git a/types/src/v0/impls/block/full_payload/ns_table/test.rs b/types/src/v0/impls/block/full_payload/ns_table/test.rs
index 2c515651d7..676c89da44 100644
--- a/types/src/v0/impls/block/full_payload/ns_table/test.rs
+++ b/types/src/v0/impls/block/full_payload/ns_table/test.rs
@@ -25,6 +25,13 @@ fn random_valid() {
     }
 }
 
+#[test]
+fn ns_table_from_bytes() {
+    let bytes = Vec::from([0; NUM_NSS_BYTE_LEN]);
+    let ns_table = NsTable::from_bytes_unchecked(&bytes);
+    expect_valid(&ns_table);
+}
+
 #[test]
 fn ns_table_byte_len() {
     setup_test();