Disable network synchronizer to hopefully fix sporadic test failures

Author: Alexander01998

build.gradle

@@ -68,15 +68,20 @@ loom {
 	accessWidenerPath = file("src/main/resources/wurst.accesswidener")
 
 	runs {
+		clientGameTest {
+			vmArgs.add("-Dfabric.client.gametest.disableNetworkSynchronizer=true")
+		}
+		
 		clientWithMods {
 			inherit client
 		}
-
+		
 		clientGameTestWithMods {
 			inherit client
 			source = sourceSets.gametest
 			runDir = "build/run/clientGameTestWithMods"
 			vmArgs.add("-Dfabric.client.gametest")
+			vmArgs.add("-Dfabric.client.gametest.disableNetworkSynchronizer=true")
 			vmArgs.add("-Dwurst.test.withMods=true")
 			programArgs.add("--username=Wurst-Bot")
 		}

src/gametest/java/net/wurstclient/gametest/WurstTest.java

@@ -23,6 +23,7 @@
 import net.fabricmc.fabric.api.client.gametest.v1.context.TestServerContext;
 import net.fabricmc.fabric.api.client.gametest.v1.context.TestSingleplayerContext;
 import net.fabricmc.fabric.api.client.gametest.v1.world.TestWorldBuilder;
+import net.fabricmc.fabric.impl.client.gametest.TestSystemProperties;
 import net.minecraft.SharedConstants;
 import net.minecraft.client.gui.screens.worldselection.WorldCreationUiState;
 import net.minecraft.world.level.block.Blocks;
@@ -42,6 +43,9 @@ public class WurstTest implements FabricClientGameTest
 	@Override
 	public void runTest(ClientGameTestContext context)
 	{
+		if(!TestSystemProperties.DISABLE_NETWORK_SYNCHRONIZER)
+			throw new RuntimeException("Network synchronizer is not disabled");
+		
 		LOGGER.info("Starting Wurst Client GameTest");
 		hideSplashTexts(context);
 		waitForTitleScreenFade(context);