Test: Adding test for price change. Small bugfix

IDATT2003-gruppe06 · Apr 20, 2026 · 8d15ad4 · 8d15ad4
1 parent 31965c8
commit 8d15ad4
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Showing 2 changed files with 11 additions and 2 deletions.
diff --git a/src/main/java/millions/model/Stock.java b/src/main/java/millions/model/Stock.java
@@ -73,7 +73,7 @@ public BigDecimal getLatestPriceChange() {
     }
 
     BigDecimal currentPrice = this.prices.getLast();
-    BigDecimal lastPrice = this.prices.get(this.prices.size() - 1);
+    BigDecimal lastPrice = this.prices.get(this.prices.size() - 2);
 
     return currentPrice.subtract(lastPrice);
   }

diff --git a/src/test/java/millions/StockTest.java b/src/test/java/millions/StockTest.java
@@ -5,7 +5,7 @@
 import java.math.BigDecimal;
 import java.util.ArrayList;
 import java.util.Arrays;
-
+import java.util.List;
 import millions.model.Stock;
 import org.junit.jupiter.api.Test;
 
@@ -27,6 +27,15 @@ public void settersAndGetters() {
     assertEquals("Nvadia", stock.getCompany());
   }
 
+  @Test
+  public void testGetPriceChange() {
+    ArrayList prices = new ArrayList<>(List.of(BigDecimal.valueOf(100), BigDecimal.valueOf(125)));
+    Stock stock = new Stock("AAPL", "Apple", prices);
+    assertEquals(BigDecimal.valueOf(25), stock.getLatestPriceChange());
+    stock.addNewSalesPrice(BigDecimal.valueOf(155));
+    assertEquals(BigDecimal.valueOf(30), stock.getLatestPriceChange());
+  }
+
   @Test
   public void testNullsAndInvalid() {