test(annotations): New tests for annotations

Added some new test for annotations @AutoTransient and @ThreadProvider.
These tests ensure that @AutoTransient is only used on transient fields
and @ThreadProvider is used on class that extend Thread.

src/test/java/cz/jzitnik/game/core/autotransient/AutoTransientSupportTest.java

@@ -0,0 +1,34 @@
+package cz.jzitnik.game.core.autotransient;
+
+import cz.jzitnik.game.annotations.AutoTransient;
+import org.junit.jupiter.api.DisplayName;
+import org.junit.jupiter.api.Test;
+import org.reflections.Reflections;
+import org.reflections.scanners.Scanners;
+import org.reflections.util.ConfigurationBuilder;
+
+import java.lang.reflect.Field;
+import java.lang.reflect.Modifier;
+import java.util.Set;
+
+import static org.junit.jupiter.api.Assertions.*;
+
+class AutoTransientSupportTest {
+    @Test
+    @DisplayName("All fields annotated with @AutoTransient must be transient.")
+    void checkAutoTransientAnnotation() {
+        Reflections reflections = new Reflections(
+                new ConfigurationBuilder()
+                        .forPackages("cz.jzitnik.game")
+                        .addScanners(Scanners.FieldsAnnotated) // Explicitly add the scanner for fields
+        );
+        Set<Field> fields = reflections.getFieldsAnnotatedWith(AutoTransient.class);
+
+        for (Field field : fields) {
+            if (!Modifier.isTransient(field.getModifiers())) {
+                fail("Field '" + field.getName() + "' in class " + field.getClass().getName() +
+                        " is annotated with @AutoTransient but is not transient.");
+            }
+        }
+    }
+}

src/test/java/cz/jzitnik/game/threads/ThreadProviderTest.java

@@ -0,0 +1,25 @@
+package cz.jzitnik.game.threads;
+
+import cz.jzitnik.game.annotations.ThreadRegistry;
+import org.junit.jupiter.api.DisplayName;
+import org.junit.jupiter.api.Test;
+import org.reflections.Reflections;
+
+import java.util.Set;
+
+import static org.junit.jupiter.api.Assertions.*;
+
+class ThreadProviderTest {
+    @Test
+    @DisplayName("All classes annotated with @ThreadRegistry must extend Thread")
+    void threadRegistryTest() {
+        Reflections reflections = new Reflections("cz.jzitnik.game.threads.list");
+        Set<Class<?>> classes = reflections.getTypesAnnotatedWith(ThreadRegistry.class);
+
+        for (Class<?> clazz : classes) {
+            if (!Thread.class.isAssignableFrom(clazz)) {
+                fail("Class " + clazz.getName() + " is annotated with @ThreadRegistry but does not extend Thread.");
+            }
+        }
+    }
+}