Fix unboxing issue causing errors in acceptance tests

hedera-mirror-web3/src/main/java/com/hedera/services/utils/EntityIdUtils.java

@@ -162,6 +162,9 @@ public static EntityId toEntityId(final com.hedera.hapi.node.base.FileID fileID)
     }
 
     public static com.hedera.hapi.node.base.AccountID toAccountId(final Long id) {
+        if (id == null) {
+            return null;
+        }
         final var decodedEntityId = EntityId.of(id);
 
         return toAccountId(decodedEntityId);

hedera-mirror-web3/src/test/java/com/hedera/mirror/web3/service/ContractCallServicePrecompileModificationTest.java

@@ -201,21 +201,44 @@ void associateToken(final Boolean single) throws Exception {
         // Given
         final var notAssociatedAccount = accountEntityPersist();
 
-        final var tokenEntity = tokenEntityPersist();
+        final var token = fungibleTokenPersist();
+        final var contract = testWeb3jService.deploy(ModificationPrecompileTestContract::deploy);
 
-        domainBuilder
-                .token()
-                .customize(t -> t.tokenId(tokenEntity.getId()).type(TokenTypeEnum.FUNGIBLE_COMMON))
-                .persist();
+        // When
+        final var functionCall = single
+                ? contract.call_associateTokenExternal(
+                        getAddressFromEntity(notAssociatedAccount),
+                        toAddress(token.getTokenId()).toHexString())
+                : contract.call_associateTokensExternal(
+                        getAddressFromEntity(notAssociatedAccount),
+                        List.of(toAddress(token.getTokenId()).toHexString()));
+
+        // Then
+        verifyEthCallAndEstimateGas(functionCall, contract, ZERO_VALUE);
+        verifyOpcodeTracerCall(functionCall.encodeFunctionCall(), contract);
+    }
+
+    @ParameterizedTest
+    @ValueSource(booleans = {true, false})
+    void associateTokenWithNullAutoRenew(final Boolean single) throws Exception {
+        // Given
+        final var notAssociatedAccount = accountEntityPersistCustomizable(e -> e.type(EntityType.ACCOUNT)
+                .balance(DEFAULT_ACCOUNT_BALANCE)
+                .autoRenewAccountId(null)
+                .alias(null)
+                .evmAddress(null));
 
+        final var token = fungibleTokenPersist();
         final var contract = testWeb3jService.deploy(ModificationPrecompileTestContract::deploy);
 
         // When
         final var functionCall = single
                 ? contract.call_associateTokenExternal(
-                        getAddressFromEntity(notAssociatedAccount), getAddressFromEntity(tokenEntity))
+                        getAddressFromEntity(notAssociatedAccount),
+                        toAddress(token.getTokenId()).toHexString())
                 : contract.call_associateTokensExternal(
-                        getAddressFromEntity(notAssociatedAccount), List.of(getAddressFromEntity(tokenEntity)));
+                        getAddressFromEntity(notAssociatedAccount),
+                        List.of(toAddress(token.getTokenId()).toHexString()));
 
         // Then
         verifyEthCallAndEstimateGas(functionCall, contract, ZERO_VALUE);

hedera-mirror-web3/src/test/java/com/hedera/services/utils/EntityIdUtilsTest.java

@@ -277,6 +277,11 @@ void toAccountIdFromId() {
         assertEquals(expectedAccountId, EntityIdUtils.toAccountId(id));
     }
 
+    @Test
+    void toAccountIdFromNullId() {
+        assertThat(EntityIdUtils.toAccountId((Long) null)).isNull();
+    }
+
     @Test
     void toAccountIdFromShardRealmNum() {
         final var expectedAccountId = com.hedera.hapi.node.base.AccountID.newBuilder()