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iseppalaiseppala
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Add banking implementation
1 parent f620123 commit 11c0654

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Lines changed: 111 additions & 3 deletions

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‎hexagonal/src/main/java/com/iluwatar/hexagonal/banking/WireTransfers.java‎

Lines changed: 4 additions & 3 deletions
Original file line numberDiff line numberDiff line change
@@ -24,12 +24,13 @@
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/**
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*
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* Interface to the lottery service provider's bank account.
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* Interface to bank accounts.
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*
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*/
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public interface WireTransfers {
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int getCurrentFundsAmount();
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boolean transferFunds(int amount, String receiverBankAccountNumber);
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void setFunds(String bankAccount, int amount);
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int getFunds(String bankAccount);
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boolean transferFunds(int amount, String sourceBackAccount, String destinationBankAccount);
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}

‎hexagonal/src/main/java/com/iluwatar/hexagonal/banking/WireTransfersImpl.java‎

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/**
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* The MIT License
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* Copyright (c) 2014 Ilkka Seppälä
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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package com.iluwatar.hexagonal.banking;
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import java.util.HashMap;
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import java.util.Map;
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/**
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*
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* Banking implementation
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*
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*/
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public class WireTransfersImpl implements WireTransfers {
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private static Map<String, Integer> accounts = new HashMap<>();
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@Override
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public void setFunds(String bankAccount, int amount) {
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accounts.put(bankAccount, amount);
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}
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@Override
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public int getFunds(String bankAccount) {
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return accounts.getOrDefault(bankAccount, 0);
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}
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@Override
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public boolean transferFunds(int amount, String sourceBackAccount, String destinationBankAccount) {
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if (accounts.getOrDefault(sourceBackAccount, 0) >= amount) {
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accounts.put(sourceBackAccount, accounts.get(sourceBackAccount) - amount);
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accounts.put(destinationBankAccount, accounts.get(destinationBankAccount) + amount);
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return true;
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} else {
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return false;
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}
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}
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}

‎hexagonal/src/test/java/com/iluwatar/hexagonal/banking/WireTransfersTest.java‎

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Original file line numberDiff line numberDiff line change
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/**
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* The MIT License
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* Copyright (c) 2014 Ilkka Seppälä
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
7+
* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
9+
* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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package com.iluwatar.hexagonal.banking;
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import static org.junit.Assert.assertEquals;
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import static org.junit.Assert.assertTrue;
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import org.junit.Test;
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/**
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*
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* Tests for banking
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*
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*/
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public class WireTransfersTest {
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private final WireTransfers bank = new WireTransfersImpl();
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@Test
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public void testInit() {
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assertEquals(bank.getFunds("foo"), 0);
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bank.setFunds("foo", 100);
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assertEquals(bank.getFunds("foo"), 100);
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bank.setFunds("bar", 150);
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assertEquals(bank.getFunds("bar"), 150);
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assertTrue(bank.transferFunds(50, "bar", "foo"));
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assertEquals(bank.getFunds("foo"), 150);
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assertEquals(bank.getFunds("bar"), 100);
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}
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}

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