Add InventoryManagementSystem app

2025-11-03 17:32:20 +01:00
parent 8577d69eb1
commit f49be0c3d3
12 changed files with 1028 additions and 1 deletions
--- a/InventoryManagementSystem/src/test/java/inventory/InventoryManagerTest.java
+++ b/InventoryManagementSystem/src/test/java/inventory/InventoryManagerTest.java
@@ -0,0 +1,142 @@
+package inventory;
+
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+import static org.junit.jupiter.api.Assertions.*;
+import java.util.List;
+
+/**
+ * Unit tests for InventoryManager class.
+ */
+class InventoryManagerTest {
+
+    private InventoryManager manager;
+
+    /**
+     * Set up fresh instance before each test
+     */
+    @BeforeEach
+    void setUp() {
+        manager = new InventoryManager();
+    }
+
+    /**
+     * Test adding products to inventory
+     */
+    @Test
+    void testAddProduct() {
+        boolean succeeded = manager.addProduct("TEST1", "Test Book", "BOOK", 10.0, 1);
+        assertTrue(succeeded);
+        assertTrue(manager.productExists("TEST1"));
+        assertEquals(10.00, manager.getInventoryValue());
+    }
+
+    /**
+     *  Test adding product with invalid parameters
+     */
+    @Test
+    void testAddInvalidProduct() {
+        boolean succeeded = manager.addProduct("TEST1", "Test Book", "BOOK", 0, 1);
+        assertFalse(succeeded);
+        assertEquals(0, manager.getInventoryValue());
+    }
+
+    /**
+     * Test selling products
+     */
+    @Test
+    void testSellProduct() {
+        manager.addProduct("TEST1", "Test Book", "BOOK", 10.0, 10);
+        assertEquals(100.00, manager.getInventoryValue());
+
+        manager.sellProduct("TEST1", 2, "NONE");
+        assertEquals(80.00, manager.getInventoryValue());
+
+        manager.sellProduct("TEST1", 6, "BULK");
+        assertEquals(20.00, manager.getInventoryValue());
+
+        manager.sellProduct("TEST1", 2, "STUDENT");
+        assertEquals(0, manager.getInventoryValue());
+    }
+
+    /**
+     * Test selling more than available stock
+     */
+    @Test
+    void testSellInsufficientStock() {
+        manager.addProduct("TEST1", "Test Book", "BOOK", 10.0, 10);
+        assertEquals(100.00, manager.getInventoryValue());
+
+        manager.sellProduct("TEST1", 12, "NONE");
+        assertEquals(100.00, manager.getInventoryValue());
+    }
+
+    /**
+     * Test adding stock to existing product
+     */
+    @Test
+    void testAddStock() {
+        manager.addProduct("TEST1", "Test Book", "BOOK", 10.0, 1);
+        assertEquals(10.00, manager.getInventoryValue());
+
+        manager.addStock("TEST1", 1);
+        assertEquals(20.00, manager.getInventoryValue());
+    }
+
+    /**
+     * Test inventory value calculation
+     */
+    @Test
+    void testInventoryValue() {
+        manager.addProduct("TEST1", "Test Book", "BOOK", 10.0, 2);
+        manager.addProduct("TEST2", "Test Book", "BOOK", 50.0, 1);
+        assertEquals(2 * 10.00 + 1 * 50.00, manager.getInventoryValue());
+    }
+
+    /**
+     * Test low stock detection
+     */
+    @Test
+    void testLowStockProducts() {
+        manager.addProduct("TEST1", "Test Book", "BOOK", 10.0, 1);
+        manager.addProduct("TEST2", "Test Book", "BOOK", 10.0, 2);
+        manager.addProduct("TEST5", "Test Book", "BOOK", 10.0, 5);
+        manager.addProduct("TEST10", "Test Book", "BOOK", 10.0, 10);
+
+        List<Product> lowStockUnder5 = manager.getLowStockProducts(5);
+        assertEquals(2, lowStockUnder5.size());
+        assertTrue(lowStockUnder5.stream().anyMatch(p -> p.getId().equals("TEST1")));
+        assertTrue(lowStockUnder5.stream().anyMatch(p -> p.getId().equals("TEST2")));
+    }
+
+    /**
+     * Test operations on non-existent products
+     */
+    @Test
+    void testNonExistentProduct() {
+        boolean sellSucceeded = manager.sellProduct("NONE", 1, "BOOK");
+        assertFalse(sellSucceeded);
+
+        boolean addStockSucceeded = manager.addStock("NONE", 1);
+        assertFalse(addStockSucceeded);
+    }
+
+    /**
+     * Test complete workflow
+     */
+    @Test
+    void testCompleteWorkflow() {
+
+        boolean addSucceeded = manager.addProduct("TEST1", "Test Book", "BOOK", 10.0, 10);
+        assertTrue(addSucceeded);
+        assertEquals(100.00, manager.getInventoryValue());
+
+        boolean addStockSucceeded = manager.addStock("TEST1", 10);
+        assertTrue(addStockSucceeded);
+        assertEquals(200.00, manager.getInventoryValue());
+
+        boolean sellSucceeded = manager.sellProduct("TEST1", 18, "NONE");
+        assertTrue(sellSucceeded);
+        assertEquals(20.00, manager.getInventoryValue());
+    }
+}