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package protocols.implementations;
import core.VSInternalProcess;
import core.VSMessage;
import org.junit.jupiter.api.BeforeEach;
import org.junit.jupiter.api.Test;
import org.mockito.ArgumentCaptor;
import org.mockito.Mock;
import org.mockito.MockitoAnnotations;
import prefs.VSPrefs;
import simulator.VSSimulatorVisualization;
import static org.junit.jupiter.api.Assertions.*;
import static org.mockito.ArgumentMatchers.any;
import static org.mockito.ArgumentMatchers.anyString;
import static org.mockito.Mockito.*;
/**
* Unit tests for VSPingPongProtocol.
*/
class VSPingPongProtocolTest {
@Mock
private VSInternalProcess mockProcess;
@Mock
private VSSimulatorVisualization mockCanvas;
@Mock
private VSPrefs mockPrefs;
private VSPingPongProtocol protocol;
@BeforeEach
void setUp() {
MockitoAnnotations.openMocks(this);
protocol = new VSPingPongProtocol();
protocol.process = mockProcess;
protocol.prefs = mockPrefs;
// Setup mock chain
when(mockProcess.getSimulatorCanvas()).thenReturn(mockCanvas);
when(mockPrefs.getString(anyString())).thenReturn("TestString");
}
@Test
void testConstructor() {
VSPingPongProtocol newProtocol = new VSPingPongProtocol();
assertFalse(newProtocol.hasOnServerStart()); // Should use client start
assertNotNull(newProtocol.getClassname());
assertTrue(newProtocol.getClassname().contains("VSPingPongProtocol"));
}
@Test
void testClientInit() {
// Should do nothing but not throw exception
assertDoesNotThrow(() -> protocol.onClientInit());
}
@Test
void testServerInit() {
// Should do nothing but not throw exception
assertDoesNotThrow(() -> protocol.onServerInit());
}
@Test
void testClientReset() {
// First send some messages to increment counter
protocol.isClient(true);
protocol.onClientStart();
protocol.onClientStart();
// Reset should clear counter
protocol.onClientReset();
// Verify counter was reset by checking next message
ArgumentCaptor<VSMessage> messageCaptor = ArgumentCaptor.forClass(VSMessage.class);
protocol.onClientStart();
verify(mockProcess, atLeast(1)).sendMessage(messageCaptor.capture());
VSMessage lastMessage = messageCaptor.getValue();
assertEquals(1, lastMessage.getInteger("counter"));
}
@Test
void testServerReset() {
// Set up server mode
protocol.isServer(true);
protocol.currentContextIsServer(true);
// Create a mock client message
VSMessage clientMessage = new VSMessage();
clientMessage.setBoolean("fromClient", true);
clientMessage.setInteger("counter", 1);
// Process some messages to increment counter
protocol.onServerRecv(clientMessage);
protocol.onServerRecv(clientMessage);
// Reset should clear counter
protocol.onServerReset();
// Verify counter was reset by checking next message
ArgumentCaptor<VSMessage> messageCaptor = ArgumentCaptor.forClass(VSMessage.class);
protocol.onServerRecv(clientMessage);
verify(mockProcess, atLeast(1)).sendMessage(messageCaptor.capture());
VSMessage lastMessage = messageCaptor.getValue();
assertEquals(1, lastMessage.getInteger("counter"));
}
@Test
void testClientStart() {
protocol.isClient(true);
ArgumentCaptor<VSMessage> messageCaptor = ArgumentCaptor.forClass(VSMessage.class);
protocol.onClientStart();
verify(mockProcess).sendMessage(messageCaptor.capture());
VSMessage sentMessage = messageCaptor.getValue();
assertTrue(sentMessage.getBoolean("fromClient"));
assertEquals(1, sentMessage.getInteger("counter"));
// Test counter increment
protocol.onClientStart();
verify(mockProcess, times(2)).sendMessage(messageCaptor.capture());
sentMessage = messageCaptor.getValue();
assertEquals(2, sentMessage.getInteger("counter"));
}
@Test
void testClientRecv() {
protocol.isClient(true);
// Create a valid server message
VSMessage serverMessage = new VSMessage();
serverMessage.setBoolean("fromServer", true);
serverMessage.setInteger("counter", 5);
ArgumentCaptor<VSMessage> messageCaptor = ArgumentCaptor.forClass(VSMessage.class);
protocol.onClientRecv(serverMessage);
verify(mockProcess).sendMessage(messageCaptor.capture());
VSMessage sentMessage = messageCaptor.getValue();
assertTrue(sentMessage.getBoolean("fromClient"));
assertEquals(1, sentMessage.getInteger("counter"));
}
@Test
void testClientRecvIgnoresNonServerMessage() {
protocol.isClient(true);
// Create an invalid message (not from server)
VSMessage invalidMessage = new VSMessage();
invalidMessage.setBoolean("fromServer", false);
invalidMessage.setInteger("counter", 5);
protocol.onClientRecv(invalidMessage);
// Should not send any message
verify(mockProcess, never()).sendMessage(any());
}
@Test
void testServerRecv() {
protocol.isServer(true);
protocol.currentContextIsServer(true);
// Create a valid client message
VSMessage clientMessage = new VSMessage();
clientMessage.setBoolean("fromClient", true);
clientMessage.setInteger("counter", 3);
ArgumentCaptor<VSMessage> messageCaptor = ArgumentCaptor.forClass(VSMessage.class);
protocol.onServerRecv(clientMessage);
verify(mockProcess).sendMessage(messageCaptor.capture());
VSMessage sentMessage = messageCaptor.getValue();
assertTrue(sentMessage.getBoolean("fromServer"));
assertEquals(1, sentMessage.getInteger("counter"));
}
@Test
void testServerRecvIgnoresNonClientMessage() {
protocol.isServer(true);
protocol.currentContextIsServer(true);
// Create an invalid message (not from client)
VSMessage invalidMessage = new VSMessage();
invalidMessage.setBoolean("fromClient", false);
invalidMessage.setInteger("counter", 5);
protocol.onServerRecv(invalidMessage);
// Should not send any message
verify(mockProcess, never()).sendMessage(any());
}
@Test
void testClientSchedule() {
// Should do nothing but not throw exception
assertDoesNotThrow(() -> protocol.onClientSchedule());
}
@Test
void testServerSchedule() {
// Should do nothing but not throw exception
assertDoesNotThrow(() -> protocol.onServerSchedule());
}
@Test
void testToString() {
String result = protocol.toString();
assertNotNull(result);
assertTrue(result.contains("New message afterwards"));
assertTrue(result.contains("TestString"));
}
@Test
void testPingPongInteraction() {
// Test a full ping-pong interaction
protocol.isClient(true);
protocol.isServer(true);
ArgumentCaptor<VSMessage> messageCaptor = ArgumentCaptor.forClass(VSMessage.class);
// Client starts the ping
protocol.currentContextIsServer(false);
protocol.onClientStart();
verify(mockProcess, times(1)).sendMessage(messageCaptor.capture());
VSMessage ping = messageCaptor.getValue();
assertTrue(ping.getBoolean("fromClient"));
assertEquals(1, ping.getInteger("counter"));
// Server receives ping and sends pong
protocol.currentContextIsServer(true);
protocol.onServerRecv(ping);
verify(mockProcess, times(2)).sendMessage(messageCaptor.capture());
VSMessage pong = messageCaptor.getValue();
assertTrue(pong.getBoolean("fromServer"));
assertEquals(1, pong.getInteger("counter"));
// Client receives pong and sends another ping
protocol.currentContextIsServer(false);
protocol.onClientRecv(pong);
verify(mockProcess, times(3)).sendMessage(messageCaptor.capture());
VSMessage ping2 = messageCaptor.getValue();
assertTrue(ping2.getBoolean("fromClient"));
assertEquals(2, ping2.getInteger("counter"));
}
}
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