From 12bb7bc40afeb81d20a998ffa26203cc32c3859b Mon Sep 17 00:00:00 2001
From: = <tommyah@stud.ntnu.no>
Date: Tue, 26 May 2026 23:35:39 +0200
Subject: [PATCH] Feat: Updated exchange and test classes

---
 .../idi/idatt2003/g40/mappe/engine/Exchange.java    | 13 ++++++++-----
 .../idatt2003/g40/mappe/engine/ExchangeTest.java    | 13 +++++++------
 .../idi/idatt2003/g40/mappe/model/PlayerTest.java   |  9 ++++++---
 3 files changed, 21 insertions(+), 14 deletions(-)

diff --git a/src/main/java/edu/ntnu/idi/idatt2003/g40/mappe/engine/Exchange.java b/src/main/java/edu/ntnu/idi/idatt2003/g40/mappe/engine/Exchange.java
index 5e7bf07..632f657 100644
--- a/src/main/java/edu/ntnu/idi/idatt2003/g40/mappe/engine/Exchange.java
+++ b/src/main/java/edu/ntnu/idi/idatt2003/g40/mappe/engine/Exchange.java
@@ -295,16 +295,19 @@ public Transaction sell(BigDecimal amount,
       throw new IllegalArgumentException("Player does not own any shares of this stock!");
     }
 
-    Share ownedPosition = matchingShares.getFirst();
-    BigDecimal totalOwned = ownedPosition.getQuantity();
-    BigDecimal ownedPurchasePrice = ownedPosition.getPurchasePrice();
+    BigDecimal totalOwned = matchingShares.stream()
+            .map(Share::getQuantity)
+            .reduce(BigDecimal.ZERO, BigDecimal::add);
 
     if (amount.compareTo(totalOwned) > 0) {
       amount = totalOwned;
     }
 
-    Stock stock = ownedPosition.getStock();
-    Share shareToSell = new Share(stock, amount, ownedPurchasePrice);
+    Stock stock = matchingShares.getFirst().getStock();
+
+    BigDecimal oldestPurchasePrice = matchingShares.getFirst().getPurchasePrice();
+
+    Share shareToSell = new Share(stock, amount, oldestPurchasePrice);
 
     Transaction sale = TransactionFactory.createTransaction(
             TransactionType.SALE, shareToSell, getWeek()
diff --git a/src/test/java/edu/ntnu/idi/idatt2003/g40/mappe/engine/ExchangeTest.java b/src/test/java/edu/ntnu/idi/idatt2003/g40/mappe/engine/ExchangeTest.java
index 66ce0c5..65337f7 100644
--- a/src/test/java/edu/ntnu/idi/idatt2003/g40/mappe/engine/ExchangeTest.java
+++ b/src/test/java/edu/ntnu/idi/idatt2003/g40/mappe/engine/ExchangeTest.java
@@ -156,19 +156,20 @@ void buyThrowsExceptionOnIllegalArguments() {
 
   @Test
   void sellReturnsSaleAndAddsMoneyToPlayer() {
-    Share share =
-            new Share(appleStock, new BigDecimal("2"),
-                    appleStock.getSalesPrice());
-
-    Transaction transaction = testExchange.sell(share, testPlayer);
+    BigDecimal sellAmount = new BigDecimal("2");
+    Share share = new Share(appleStock, sellAmount, appleStock.getSalesPrice());
+    testPlayer.getPortfolio().addShare(share);
 
+    Transaction transaction = testExchange.sell(sellAmount, appleStock.getSymbol(), testPlayer);
     TransactionCalculator calculator = new SaleCalculator(share);
     BigDecimal expectedPlayerMoney =
             testPlayer.getStartingMoney().add(calculator.calculateTotal());
 
+
     assertInstanceOf(Sale.class, transaction);
     assertEquals(1, transaction.getWeek());
-    assertSame(share, transaction.getShare());
+    assertEquals(share.getQuantity(), transaction.getShare().getQuantity());
+    assertEquals(share.getPurchasePrice(), transaction.getShare().getPurchasePrice());
     assertEquals(expectedPlayerMoney, testPlayer.getMoney());
   }
 
diff --git a/src/test/java/edu/ntnu/idi/idatt2003/g40/mappe/model/PlayerTest.java b/src/test/java/edu/ntnu/idi/idatt2003/g40/mappe/model/PlayerTest.java
index 9ac2d64..3837214 100644
--- a/src/test/java/edu/ntnu/idi/idatt2003/g40/mappe/model/PlayerTest.java
+++ b/src/test/java/edu/ntnu/idi/idatt2003/g40/mappe/model/PlayerTest.java
@@ -130,13 +130,16 @@ void getNetWorthCalculatesCorrectlyForSales() {
     Stock stock = new Stock("AAPL", "Apple inc.,", new BigDecimal("100.00"));
     Share share = new Share(stock, new BigDecimal("1"), new BigDecimal("100.00"));
 
-    BigDecimal expectedNetWorth = testPlayer.getNetWorth();
-    Transaction transaction = TransactionFactory.createTransaction(TransactionType.SALE, share, 1);
+    testPlayer.getPortfolio().addShare(share);
+    BigDecimal baselineNetWorth = testPlayer.getNetWorth();
 
+    Transaction transaction = TransactionFactory.createTransaction(TransactionType.SALE, share, 1);
     testPlayer.handleTransaction(transaction);
 
     BigDecimal actualNetWorth = testPlayer.getNetWorth();
-    expectedNetWorth = expectedNetWorth.add(transaction.getCalculator().calculateTotal());
+
+    BigDecimal commissionFee = transaction.getCalculator().calculateCommission();
+    BigDecimal expectedNetWorth = baselineNetWorth.subtract(commissionFee);
 
     assertEquals(expectedNetWorth, actualNetWorth);
     assertEquals(actualNetWorth.floatValue(),