Fix linking error for LibIpaMultipoint(hyperledger#131)

Signed-off-by: Neo <neotheprogramist@proton.me>
Signed-off-by: Kevaundray Wedderburn <kevtheappdev@gmail.com>

ipa-multipoint/ipa_multipoint_jni/src/lib.rs

@@ -126,7 +126,7 @@ pub extern "system" fn Java_org_hyperledger_besu_nativelib_ipamultipoint_LibIpaM
 /// Commit_root receives a list of 32 byte scalars and returns a 32 byte commitment.to_bytes()
 /// This is ported from rust-verkle.
 #[no_mangle]
-pub extern "system" fn Java_org_hyperledger_besu_nativelib_ipamultipoint_LibIpaMultipoint_commit_root(env: JNIEnv,
+pub extern "system" fn Java_org_hyperledger_besu_nativelib_ipamultipoint_LibIpaMultipoint_commitRoot(env: JNIEnv,
                                                                                                  _class: JClass<'_>,
                                                                                                  input: jbyteArray)
                                                                                                  -> jbyteArray {

ipa-multipoint/src/main/java/org/hyperledger/besu/nativelib/ipamultipoint/LibIpaMultipoint.java

@@ -56,7 +56,7 @@ public class LibIpaMultipoint {
    * @param input [Fr,Fr,Fr...]
    * @return commitment.to_bytes()
    */
-  public static native byte[] commit_root(byte[] input);
+  public static native byte[] commitRoot(byte[] input);
 
   /**
    * Pedersen hash as specified in https://notes.ethereum.org/@vbuterin/verkle_tree_eip

ipa-multipoint/src/test/java/org/hyperledger/besu/nativelib/ipa_multipoint/CommitRootTest.java

@@ -0,0 +1,61 @@
+/*
+ * Copyright Besu Contributors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
+ * an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations under the License.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ */
+package org.hyperledger.besu.nativelib.ipa_multipoint;
+
+import org.junit.jupiter.params.ParameterizedTest;
+import org.junit.jupiter.params.provider.MethodSource;
+import static org.assertj.core.api.Assertions.*;
+
+import com.fasterxml.jackson.core.type.TypeReference;
+import com.fasterxml.jackson.databind.ObjectMapper;
+
+import org.apache.tuweni.bytes.Bytes;
+import org.apache.tuweni.bytes.Bytes32;
+import org.hyperledger.besu.nativelib.ipamultipoint.LibIpaMultipoint;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.util.ArrayList;
+import java.util.List;
+
+public class CommitRootTest {
+    private static final ObjectMapper objectMapper = new ObjectMapper();
+
+    public static List<TestData> JsonData() throws IOException {
+        InputStream inputStream = PedersenCommitmentTest.class.getResourceAsStream("/genesis_lvl1_commits.json");
+        return objectMapper.readValue(inputStream, new TypeReference<List<TestData>>() {
+        });
+    }
+
+    static class TestData {
+        public ArrayList<String> frs;
+        public String expected;
+    }
+
+    @ParameterizedTest
+    @MethodSource("JsonData")
+    public void TestPolynomialCommitments(TestData testData) {
+        List<Bytes> FrBytes = new ArrayList<>();
+        for (int i = 0; i < 256; i++) {
+            Bytes32 value = Bytes32.fromHexString(testData.frs.get(i));
+            FrBytes.add(value);
+        }
+        byte[] input = Bytes.concatenate(FrBytes).toArray();
+        Bytes32 result = Bytes32.wrap(LibIpaMultipoint.commitRoot(input));
+        Bytes32 expected = Bytes32.fromHexString(testData.expected);
+        assertThat(result).isEqualTo(expected);
+    }
+}

ipa-multipoint/src/test/java/org/hyperledger/besu/nativelib/ipa_multipoint/LibIpaMultipointTest.java

@@ -32,6 +32,14 @@ public void testCallLibrary() {
         assertThat(result).isEqualTo(expected);
     }
 
+    @Test
+    public void testCallLibraryCommitRoot() {
+        Bytes32 input = Bytes32.fromHexString("0xf6e31f7a565a390b48fdd24569ac10d43562d19de37ea951c7f9f250a339d059");
+        Bytes32 result = Bytes32.wrap(LibIpaMultipoint.commitRoot(input.toArray()));
+        Bytes32 expected = Bytes32.fromHexString("0x588f93e52b41d8d3abade94bf44a2ccd5d6ef9090a63164fba8d02c909168c53");
+        assertThat(result).isEqualTo(expected);
+    }
+
     @Test
     public void testCallLibraryWithManyElements() {
         Bytes32 element = Bytes32.fromHexString("0x0cfe3041fb6512c87922e2146c8308b372f3bf967f889e69ad116ce7c7ec00");