feat: close comnection after tests

Signed-off-by: Mariusz Jasuwienas <mariusz@jasuwienas.pl>

Author: jasuwienas

test/token-service/erc-20/ERC20Contract.js

@@ -39,6 +39,10 @@ describe('ERC20Contract Test Suite', function () {
     await utils.grantTokenKyc(tokenCreateContract, tokenAddress);
   });
 
+  after(async function () {
+    (await utils.createSDKClient()).close();
+  });
+
   it('should be able to get token name', async function () {
     const name = await erc20Contract.name(tokenAddress);
     expect(name).to.equal(Constants.TOKEN_NAME);

test/token-service/utils.js

@@ -407,9 +407,8 @@ class Utils {
 
   static async getHbarBalance(address) {
     const balanceJson = (await this.getAccountBalance(address)).toJSON();
-    const balanceFloat = parseFloat(balanceJson.hbars);
 
-    return balanceFloat;
+    return parseFloat(balanceJson.hbars);
   }
 
   static async getTokenBalance(accountAddress, tokenAddress) {
@@ -636,7 +635,6 @@ class Utils {
         pkSigner.publicKey.toEvmAddress(),
         clientGenesis
       );
-      clientGenesis.close();
       const clientSigner = await Utils.createSDKClient(accountId, pkSigner);
 
       const keyList = new KeyList(
@@ -656,7 +654,6 @@ class Utils {
           .freezeWith(clientSigner)
           .sign(pkSigner)
       ).execute(clientSigner);
-      clientSigner.close();
     }
   }
 
@@ -666,7 +663,6 @@ class Utils {
     const tokenBalance = await new AccountBalanceQuery()
       .setAccountId(accountId)
       .execute(client);
-    client.close();
     return tokenBalance;
   }
 
@@ -719,8 +715,6 @@ class Utils {
     await (
       await tx.freezeWith(clientSigner0).sign(pkSigners[0])
     ).execute(clientSigner0);
-    clientSigner0.close();
-    clientGenesis.close();
   }
 
   static getCurrentNetwork() {
@@ -756,7 +750,6 @@ class Utils {
     const signTx = await transaction.sign(signerPk);
     const txResponse = await signTx.execute(signerClient);
     await txResponse.getReceipt(signerClient);
-    signerClient.close();
   }
 
   static defaultKeyValues = {