test: add zerokit test for poseidon_sled case

tests/poseidon.rs

@@ -7,11 +7,13 @@ use rln::protocol::hash_to_field;
 use rln::utils::str_to_fr;
 
 use std::collections::HashMap;
+use std::fs;
 use std::io::Cursor;
 
 use ark_serialize::{CanonicalDeserialize, CanonicalSerialize};
 
 struct MemoryDB(HashMap<DBKey, Value>);
+struct MySled(sled::Db);
 
 #[derive(Clone, Copy, PartialEq, Eq)]
 struct PoseidonHash;
@@ -71,6 +73,41 @@ impl Database for MemoryDB {
     }
 }
 
+impl Database for MySled {
+    fn new(dbpath: &str) -> Result<Self> {
+        let db = sled::open(dbpath).unwrap();
+        if db.was_recovered() {
+            return Err(Error("Database exists, try load()!".to_string()));
+        }
+
+        Ok(MySled(db))
+    }
+
+    fn load(dbpath: &str) -> Result<Self> {
+        let db = sled::open(dbpath).unwrap();
+
+        if !db.was_recovered() {
+            println!("Hello world");
+            fs::remove_dir_all(dbpath).expect("Error removing db");
+            return Err(Error("Trying to load non-existing database!".to_string()));
+        }
+
+        Ok(MySled(db))
+    }
+
+    fn get(&self, key: DBKey) -> Result<Option<Value>> {
+        Ok(self.0.get(key).unwrap().map(|val| val.to_vec()))
+    }
+
+    fn put(&mut self, key: DBKey, value: Value) -> Result<()> {
+        self.0.insert(key, value).unwrap();
+
+        self.0.flush().unwrap();
+
+        Ok(())
+    }
+}
+
 #[test]
 fn poseidon_memory() -> Result<()> {
     let mut mt = MerkleTree::<MemoryDB, PoseidonHash>::new(TEST_TREE_HEIGHT, "abacaba")?;
@@ -194,3 +231,129 @@ fn poseidon_memory() -> Result<()> {
 
     Ok(())
 }
+
+#[test]
+fn poseidon_sled() -> Result<()> {
+    let mut mt = MerkleTree::<MySled, PoseidonHash>::new(TEST_TREE_HEIGHT, "abacaba")?;
+
+    let leaf_index = 3;
+
+    let identity_secret = hash_to_field(b"test-merkle-proof");
+    let id_commitment = MyFr(poseidon_hash(&[identity_secret]));
+
+    // let default_leaf = Fr::from(0);
+    mt.set(leaf_index, id_commitment).unwrap();
+
+    // We check correct computation of the root
+    let root = mt.root();
+
+    assert_eq!(
+        root.0,
+        str_to_fr(
+            "0x21947ffd0bce0c385f876e7c97d6a42eec5b1fe935aab2f01c1f8a8cbcc356d2",
+            16
+        )
+    );
+
+    let merkle_proof = mt.proof(leaf_index).expect("proof should exist");
+    let path_elements = merkle_proof.get_path_elements();
+    let identity_path_index = merkle_proof.get_path_index();
+
+    // We check correct computation of the path and indexes
+    // These values refers to TEST_TREE_HEIGHT == 16
+    let expected_path_elements = vec![
+        MyFr(str_to_fr(
+            "0x0000000000000000000000000000000000000000000000000000000000000000",
+            16,
+        )),
+        MyFr(str_to_fr(
+            "0x2098f5fb9e239eab3ceac3f27b81e481dc3124d55ffed523a839ee8446b64864",
+            16,
+        )),
+        MyFr(str_to_fr(
+            "0x1069673dcdb12263df301a6ff584a7ec261a44cb9dc68df067a4774460b1f1e1",
+            16,
+        )),
+        MyFr(str_to_fr(
+            "0x18f43331537ee2af2e3d758d50f72106467c6eea50371dd528d57eb2b856d238",
+            16,
+        )),
+        MyFr(str_to_fr(
+            "0x07f9d837cb17b0d36320ffe93ba52345f1b728571a568265caac97559dbc952a",
+            16,
+        )),
+        MyFr(str_to_fr(
+            "0x2b94cf5e8746b3f5c9631f4c5df32907a699c58c94b2ad4d7b5cec1639183f55",
+            16,
+        )),
+        MyFr(str_to_fr(
+            "0x2dee93c5a666459646ea7d22cca9e1bcfed71e6951b953611d11dda32ea09d78",
+            16,
+        )),
+        MyFr(str_to_fr(
+            "0x078295e5a22b84e982cf601eb639597b8b0515a88cb5ac7fa8a4aabe3c87349d",
+            16,
+        )),
+        MyFr(str_to_fr(
+            "0x2fa5e5f18f6027a6501bec864564472a616b2e274a41211a444cbe3a99f3cc61",
+            16,
+        )),
+        MyFr(str_to_fr(
+            "0x0e884376d0d8fd21ecb780389e941f66e45e7acce3e228ab3e2156a614fcd747",
+            16,
+        )),
+        MyFr(str_to_fr(
+            "0x1b7201da72494f1e28717ad1a52eb469f95892f957713533de6175e5da190af2",
+            16,
+        )),
+        MyFr(str_to_fr(
+            "0x1f8d8822725e36385200c0b201249819a6e6e1e4650808b5bebc6bface7d7636",
+            16,
+        )),
+        MyFr(str_to_fr(
+            "0x2c5d82f66c914bafb9701589ba8cfcfb6162b0a12acf88a8d0879a0471b5f85a",
+            16,
+        )),
+        MyFr(str_to_fr(
+            "0x14c54148a0940bb820957f5adf3fa1134ef5c4aaa113f4646458f270e0bfbfd0",
+            16,
+        )),
+        MyFr(str_to_fr(
+            "0x190d33b12f986f961e10c0ee44d8b9af11be25588cad89d416118e4bf4ebe80c",
+            16,
+        )),
+        MyFr(str_to_fr(
+            "0x22f98aa9ce704152ac17354914ad73ed1167ae6596af510aa5b3649325e06c92",
+            16,
+        )),
+        MyFr(str_to_fr(
+            "0x2a7c7c9b6ce5880b9f6f228d72bf6a575a526f29c66ecceef8b753d38bba7323",
+            16,
+        )),
+        MyFr(str_to_fr(
+            "0x2e8186e558698ec1c67af9c14d463ffc470043c9c2988b954d75dd643f36b992",
+            16,
+        )),
+        MyFr(str_to_fr(
+            "0x0f57c5571e9a4eab49e2c8cf050dae948aef6ead647392273546249d1c1ff10f",
+            16,
+        )),
+        MyFr(str_to_fr(
+            "0x1830ee67b5fb554ad5f63d4388800e1cfe78e310697d46e43c9ce36134f72cca",
+            16,
+        )),
+    ];
+
+    let expected_identity_path_index: Vec<u8> =
+        vec![1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0];
+
+    assert_eq!(path_elements, expected_path_elements);
+    assert_eq!(identity_path_index, expected_identity_path_index);
+
+    // We check correct verification of the proof
+    assert!(mt.verify(&id_commitment, &merkle_proof));
+
+    fs::remove_dir_all("abacaba").expect("Error removing db");
+
+    Ok(())
+}