basic core function

main/src/test/java/SimulationTest.java

@@ -0,0 +1,127 @@
+package sd;
+
+import java.io.IOException;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertNotNull;
+import static org.junit.jupiter.api.Assertions.assertTrue;
+import org.junit.jupiter.api.Test;
+
+import sd.config.SimulationConfig;
+import sd.engine.SimulationEngine;
+import sd.model.Event;
+import sd.model.EventType;
+import sd.model.Intersection;
+import sd.model.TrafficLight;
+import sd.model.TrafficLightState;
+import sd.model.Vehicle;
+import sd.model.VehicleType;
+import sd.util.StatisticsCollector;
+import sd.util.VehicleGenerator;
+
+/**
+ * Basic tests for the simulation components.
+ */
+class SimulationTest {
+    
+    @Test
+    void testConfigurationLoading() throws IOException {
+        SimulationConfig config = new SimulationConfig("src/main/resources/simulation.properties");
+        
+        assertEquals(60.0, config.getSimulationDuration());
+        assertEquals("POISSON", config.getArrivalModel());
+        assertEquals(0.5, config.getArrivalRate());
+        assertEquals(10.0, config.getStatisticsUpdateInterval());
+    }
+    
+    @Test
+    void testVehicleGeneration() throws IOException {
+        SimulationConfig config = new SimulationConfig("src/main/resources/simulation.properties");
+        VehicleGenerator generator = new VehicleGenerator(config);
+        
+        Vehicle vehicle = generator.generateVehicle("TEST1", 0.0);
+        
+        assertNotNull(vehicle);
+        assertEquals("TEST1", vehicle.getId());
+        assertNotNull(vehicle.getType());
+        assertNotNull(vehicle.getRoute());
+        assertTrue(vehicle.getRoute().size() > 0);
+    }
+    
+    @Test
+    void testEventOrdering() {
+        Event e1 = new Event(5.0, EventType.VEHICLE_ARRIVAL, null, "Cr1");
+        Event e2 = new Event(3.0, EventType.VEHICLE_ARRIVAL, null, "Cr2");
+        Event e3 = new Event(7.0, EventType.TRAFFIC_LIGHT_CHANGE, null, "Cr1");
+        
+        assertTrue(e2.compareTo(e1) < 0); // e2 should come before e1
+        assertTrue(e1.compareTo(e3) < 0); // e1 should come before e3
+    }
+    
+    @Test
+    void testIntersectionVehicleQueue() {
+        Intersection intersection = new Intersection("TestCr");
+        TrafficLight light = new TrafficLight("TestCr-N", "North", 30.0, 30.0);
+        
+        intersection.addTrafficLight(light);
+        
+        Vehicle v1 = new Vehicle("V1", VehicleType.LIGHT, 0.0, 
+            java.util.Arrays.asList("TestCr", "S"));
+        
+        intersection.configureRoute("S", "North");
+        
+        // Advance route to next destination
+        v1.advanceRoute();
+        
+        intersection.receiveVehicle(v1);
+        
+        assertEquals(1, intersection.getTotalQueueSize());
+        assertEquals(1, intersection.getTotalVehiclesReceived());
+    }
+    
+    @Test
+    void testTrafficLightStateChange() {
+        TrafficLight light = new TrafficLight("Test-Light", "North", 30.0, 30.0);
+        
+        assertEquals(TrafficLightState.RED, light.getState());
+        
+        light.changeState(TrafficLightState.GREEN);
+        assertEquals(TrafficLightState.GREEN, light.getState());
+        
+        light.changeState(TrafficLightState.RED);
+        assertEquals(TrafficLightState.RED, light.getState());
+    }
+    
+    @Test
+    void testSimulationEngineInitialization() throws IOException {
+        SimulationConfig config = new SimulationConfig("src/main/resources/simulation.properties");
+        SimulationEngine engine = new SimulationEngine(config);
+        
+        engine.initialize();
+        
+        assertNotNull(engine.getIntersections());
+        assertEquals(5, engine.getIntersections().size());
+        
+        // Check that intersections have traffic lights
+        for (Intersection intersection : engine.getIntersections().values()) {
+            assertEquals(4, intersection.getTrafficLights().size()); // North, South, East, West
+        }
+    }
+    
+    @Test
+    void testStatisticsCollector() throws IOException {
+        SimulationConfig config = new SimulationConfig("src/main/resources/simulation.properties");
+        StatisticsCollector collector = new StatisticsCollector(config);
+        
+        Vehicle v1 = new Vehicle("V1", VehicleType.LIGHT, 0.0, 
+            java.util.Arrays.asList("Cr1", "Cr2", "S"));
+        
+        collector.recordVehicleGeneration(v1, 0.0);
+        assertEquals(1, collector.getTotalVehiclesGenerated());
+        
+        collector.recordVehicleArrival(v1, "Cr1", 1.0);
+        
+        collector.recordVehicleExit(v1, 10.0);
+        assertEquals(1, collector.getTotalVehiclesCompleted());
+    }
+}