From fb003b2adceaec87302fc0bad9f0551d585452c9 Mon Sep 17 00:00:00 2001
From: Csaba Kiraly <csaba.kiraly@gmail.com>
Date: Thu, 27 Apr 2023 15:02:13 +0200
Subject: [PATCH 1/2] fix include in poseidon_old

The included file was renamed, but the include not.

Signed-off-by: Csaba Kiraly <csaba.kiraly@gmail.com>
---
 circuits/poseidon_old.circom | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/circuits/poseidon_old.circom b/circuits/poseidon_old.circom
index b8e2316b..dbebd18b 100644
--- a/circuits/poseidon_old.circom
+++ b/circuits/poseidon_old.circom
@@ -1,6 +1,6 @@
 pragma circom 2.0.0;
 
-include "./poseidon_constants.circom";
+include "./poseidon_constants_old.circom";
 
 template Sigma() {
     signal input in;

From 95dfc6d562621bdc815e1cec2f8246b95d28a965 Mon Sep 17 00:00:00 2001
From: Csaba Kiraly <csaba.kiraly@gmail.com>
Date: Thu, 27 Apr 2023 15:20:58 +0200
Subject: [PATCH 2/2] add minimal test code for old poseidon

Signed-off-by: Csaba Kiraly <csaba.kiraly@gmail.com>
---
 test/circuits/poseidonold3_test.circom |  5 ++++
 test/poseidonoldcircuit.js             | 41 ++++++++++++++++++++++++++
 2 files changed, 46 insertions(+)
 create mode 100644 test/circuits/poseidonold3_test.circom
 create mode 100644 test/poseidonoldcircuit.js

diff --git a/test/circuits/poseidonold3_test.circom b/test/circuits/poseidonold3_test.circom
new file mode 100644
index 00000000..217153aa
--- /dev/null
+++ b/test/circuits/poseidonold3_test.circom
@@ -0,0 +1,5 @@
+pragma circom 2.0.0;
+
+include "../../circuits/poseidon_old.circom";
+
+component main = Poseidon(2);
diff --git a/test/poseidonoldcircuit.js b/test/poseidonoldcircuit.js
new file mode 100644
index 00000000..b618bc2f
--- /dev/null
+++ b/test/poseidonoldcircuit.js
@@ -0,0 +1,41 @@
+const chai = require("chai");
+const path = require("path");
+const wasm_tester = require("circom_tester").wasm;
+
+const buildPoseidon = require("circomlibjs").buildPoseidon;
+
+const assert = chai.assert;
+
+describe("Poseidon(old) Circuit test", function () {
+    let poseidon;
+    let F;
+    let circuit3;
+    this.timeout(1000000);
+
+    before( async () => {
+        poseidon = await buildPoseidon();
+        F = poseidon.F;
+        circuit3 = await wasm_tester(path.join(__dirname, "circuits", "poseidonold3_test.circom"));
+    });
+
+    it("Should check constrain of hash([1, 2]) t=3", async () => {
+        const w = await circuit3.calculateWitness({inputs: [1, 2]});
+
+        const res2 = poseidon([1,2]);
+
+        assert(F.eq(F.e("7853200120776062878684798364095072458815029376092732009249414926327459813530"), F.e(res2)));
+        await circuit3.assertOut(w, {out : F.toObject(res2)});
+        await circuit3.checkConstraints(w);
+    });
+
+    it("Should check constrain of hash([3, 4]) t=3", async () => {
+        const w = await circuit3.calculateWitness({inputs: [3, 4]});
+
+        const res2 = poseidon([3, 4]);
+
+        assert(F.eq(F.e("14763215145315200506921711489642608356394854266165572616578112107564877678998"), F.e(res2)));
+        await circuit3.assertOut(w, {out : F.toObject(res2)});
+        await circuit3.checkConstraints(w);
+    });
+
+});