From 6b210e4bba1b526e538ad8c62c08e51eb7b68cbf Mon Sep 17 00:00:00 2001
From: Colin Walters <walters@verbum.org>
Date: Wed, 6 Nov 2024 21:03:37 +0100
Subject: [PATCH] fsverity: add digest testcase

Add a test case from the original composefs Rust code.
---
 src/fsverity/digest.rs | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

diff --git a/src/fsverity/digest.rs b/src/fsverity/digest.rs
index f1c4753..c12531d 100644
--- a/src/fsverity/digest.rs
+++ b/src/fsverity/digest.rs
@@ -147,3 +147,23 @@ impl FsVerityHasher {
         context.finalize().into()
     }
 }
+
+#[cfg(test)]
+mod tests {
+    use anyhow::Result;
+
+    use super::*;
+
+    #[test]
+    fn test_digest() -> Result<()> {
+        let digest = FsVerityHasher::hash(b"hello world");
+        assert_eq!(
+            digest,
+            [
+                30, 46, 170, 66, 2, 215, 80, 164, 17, 116, 238, 69, 73, 112, 185, 44, 27, 194, 249,
+                37, 177, 227, 80, 118, 216, 199, 213, 245, 99, 98, 186, 100
+            ]
+        );
+        Ok(())
+    }
+}