Add SaleTest.java

src/test/java/SaleTest.java

@@ -0,0 +1,57 @@
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertFalse;
+import static org.junit.jupiter.api.Assertions.assertTrue;
+
+import java.math.BigDecimal;
+
+public class SaleTest {
+    Stock stock;
+    Share share;
+    Sale sale;
+
+    @BeforeEach
+    void setUp(){
+        this.stock = new Stock("symbol", "company", new BigDecimal(100));
+        this.share = new Share(this.stock, new BigDecimal(20), new BigDecimal(80));
+        this.sale = new Sale(this.share, 18);
+    } 
+
+    @Test
+    void commit_validSale_updatesPlayerState() {
+
+        // Arrange
+        Player player = new Player("Jane", new BigDecimal(500));
+        player.getPortfolio().addShare(this.share);
+
+        // Act
+        this.sale.commit(player);
+
+        // Assert
+        assertTrue(player.getTransactionArchive().getTransactions(this.sale.getWeek()).contains(this.sale));
+        assertFalse(player.getPortfolio().contains(this.share));
+        assertTrue(this.sale.isCommitted());
+    }
+
+    @Test
+    void commit_alreadyCommitted_noAction() {
+
+        // Arrange
+        Player player = new Player("Jane", new BigDecimal(500));
+        player.getPortfolio().addShare(this.share);
+        this.sale.commit(player); 
+        BigDecimal moneyAfterFirstCommit = player.getMoney();
+
+        // Act
+        this.sale.commit(player);
+
+        // Assert
+        assertEquals(moneyAfterFirstCommit, player.getMoney());
+        assertEquals(1, player.getTransactionArchive().getTransactions(this.sale.getWeek()).size());
+        assertTrue(this.sale.isCommitted());
+    } 
+
+
+}