fix(core): When ReactAgent reach maxIters, msg contains MAX_ITERATIONS

Author: aihai

agentscope-core/src/main/java/io/agentscope/core/ReActAgent.java

@@ -65,11 +65,6 @@
 import io.agentscope.core.tool.ToolResultMessageBuilder;
 import io.agentscope.core.tool.Toolkit;
 import io.agentscope.core.util.MessageUtils;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
-import reactor.core.publisher.Flux;
-import reactor.core.publisher.Mono;
-
 import java.util.ArrayList;
 import java.util.Comparator;
 import java.util.HashSet;
@@ -79,6 +74,10 @@
 import java.util.Set;
 import java.util.stream.Collectors;
 import java.util.stream.IntStream;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import reactor.core.publisher.Flux;
+import reactor.core.publisher.Mono;
 
 /**
  * ReAct (Reasoning and Acting) Agent implementation.

agentscope-core/src/test/java/io/agentscope/core/agent/ReActAgentTest.java

@@ -15,6 +15,13 @@
  */
 package io.agentscope.core.agent;
 
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertFalse;
+import static org.junit.jupiter.api.Assertions.assertInstanceOf;
+import static org.junit.jupiter.api.Assertions.assertNotNull;
+import static org.junit.jupiter.api.Assertions.assertTrue;
+import static org.junit.jupiter.api.Assertions.fail;
+
 import io.agentscope.core.ReActAgent;
 import io.agentscope.core.agent.test.MockModel;
 import io.agentscope.core.agent.test.MockToolkit;
@@ -32,22 +39,14 @@
 import io.agentscope.core.model.ChatUsage;
 import io.agentscope.core.tool.Toolkit;
 import io.agentscope.core.util.JsonUtils;
-import org.junit.jupiter.api.BeforeEach;
-import org.junit.jupiter.api.DisplayName;
-import org.junit.jupiter.api.Test;
-
 import java.time.Duration;
 import java.util.Arrays;
 import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
-
-import static org.junit.jupiter.api.Assertions.assertEquals;
-import static org.junit.jupiter.api.Assertions.assertFalse;
-import static org.junit.jupiter.api.Assertions.assertInstanceOf;
-import static org.junit.jupiter.api.Assertions.assertNotNull;
-import static org.junit.jupiter.api.Assertions.assertTrue;
-import static org.junit.jupiter.api.Assertions.fail;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.DisplayName;
+import org.junit.jupiter.api.Test;
 
 /**
  * Unit tests for ReActAgent class.