Added test to verify NullPointerException for null transactions

Author: Ndacyayisenga-droid

hedera-base/src/test/java/com/openelements/hedera/base/test/ProtocolLayerClientTests.java

@@ -1,21 +1,23 @@
 package com.openelements.hedera.base.test;
 
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Test;
+
 import com.hedera.hashgraph.sdk.AccountId;
 import com.hedera.hashgraph.sdk.Client;
 import com.hedera.hashgraph.sdk.PrivateKey;
 import com.openelements.hedera.base.Account;
 import com.openelements.hedera.base.implementation.ProtocolLayerClientImpl;
-import com.openelements.hedera.base.protocol.ProtocolLayerClient;
-import org.junit.jupiter.api.Assertions;
-import org.junit.jupiter.api.Test;
 
 public class ProtocolLayerClientTests {
 
     @Test
     void testNullConstructorParam() {
-        //then
+        //given
         final Client client = Client.forTestnet();
         final Account account = new Account(AccountId.fromString("0.0.12345"), PrivateKey.generateED25519().getPublicKey(), PrivateKey.generateED25519());
+
+        //then
         Assertions.assertThrows(NullPointerException.class, () -> new ProtocolLayerClientImpl(client, null));
         Assertions.assertThrows(NullPointerException.class, () -> new ProtocolLayerClientImpl(null, account));
         Assertions.assertThrows(NullPointerException.class, () -> new ProtocolLayerClientImpl(null, null));
@@ -25,7 +27,7 @@ void testNullConstructorParam() {
     void testNullParams() {
         //given
         final Account account = new Account(AccountId.fromString("0.0.12345"), PrivateKey.generateED25519().getPublicKey(), PrivateKey.generateED25519());
-        final ProtocolLayerClient client = new ProtocolLayerClientImpl(Client.forTestnet(), account);
+        final ProtocolLayerClientImpl client = new ProtocolLayerClientImpl(Client.forTestnet(), account);
 
         //then
         Assertions.assertThrows(NullPointerException.class, () -> client.executeAccountBalanceQuery(null));
@@ -38,5 +40,16 @@ void testNullParams() {
         Assertions.assertThrows(NullPointerException.class, () -> client.executeContractCallTransaction(null));
         Assertions.assertThrows(NullPointerException.class, () -> client.executeFileInfoQuery(null));
         Assertions.assertThrows(NullPointerException.class, () -> client.executeAccountDeleteTransaction(null));
+        Assertions.assertThrows(NullPointerException.class, () -> client.executeContractDeleteTransaction(null));
+        Assertions.assertThrows(NullPointerException.class, () -> client.executeAccountCreateTransaction(null));
+        Assertions.assertThrows(NullPointerException.class, () -> client.executeTokenCreateTransaction(null));
+        Assertions.assertThrows(NullPointerException.class, () -> client.executeTokenAssociateTransaction(null));
+        Assertions.assertThrows(NullPointerException.class, () -> client.executeTopicCreateTransaction(null));
+        Assertions.assertThrows(NullPointerException.class, () -> client.executeTopicDeleteTransaction(null));
+        Assertions.assertThrows(NullPointerException.class, () -> client.executeTopicMessageSubmitTransaction(null));
+        Assertions.assertThrows(NullPointerException.class, () -> client.executeTokenCreateTransaction(null));
+        Assertions.assertThrows(NullPointerException.class, () -> client.executeBurnTokenTransaction(null));
+        Assertions.assertThrows(NullPointerException.class, () -> client.executeMintTokenTransaction(null));
+        Assertions.assertThrows(NullPointerException.class, () -> client.executeTransferTransactionForNft(null));
     }
 }

hedera-base/src/test/java/com/openelements/hedera/base/test/ProtocolLayerDataCreationTests.java

@@ -11,7 +11,6 @@
 import com.hedera.hashgraph.sdk.ContractFunctionResult;
 import com.hedera.hashgraph.sdk.TokenId;
 import com.hedera.hashgraph.sdk.TokenType;
-import com.hedera.hashgraph.sdk.TopicId;
 import com.hedera.hashgraph.sdk.proto.ContractFunctionResultOrBuilder;
 import com.openelements.hedera.base.Account;
 import com.openelements.hedera.base.ContractParam;