diff --git a/test/com/platform/test/FileOperationTest.java b/test/com/platform/test/FileOperationTest.java
index 31df8260..41aad629 100644
--- a/test/com/platform/test/FileOperationTest.java
+++ b/test/com/platform/test/FileOperationTest.java
@@ -45,6 +45,14 @@ public class FileOperationTest {
 		FileOperateHelper.fileReWrite("D:/test/1.txt", "asdaaaaaaaaa\r\n");
 	}
 	
+	@Test
+	public void WriteFile() {
+		
+		FileOperateHelper.fileWrite("D:/test/1.txt", "asdadada\r\n");
+		FileOperateHelper.fileWrite("D:/test/1.txt", "asdadada\r\n");
+		FileOperateHelper.fileWrite("D:/test/1.txt", "asdaaaaaaaaa\r\n");
+	}
+	
 	@Test
 	public void getsystem() {
 		Properties sys = System.getProperties();
diff --git a/test/com/platform/test/MapTest.java b/test/com/platform/test/MapTest.java
new file mode 100644
index 00000000..e53a6f83
--- /dev/null
+++ b/test/com/platform/test/MapTest.java
@@ -0,0 +1,22 @@
+package com.platform.test;
+
+import java.util.HashMap;
+import java.util.Map;
+
+import org.junit.Test;
+
+import com.platform.entities.CheckoutEntity;
+
+public class MapTest {
+	
+	@Test
+	public void TestRemove(){
+		Map<String, CheckoutEntity> map = new HashMap<String, CheckoutEntity>();
+		CheckoutEntity t = new CheckoutEntity();
+		t.setId(21);
+		map.put("12", t);
+		CheckoutEntity tmp = map.remove("12");
+		System.out.println(tmp.getId());
+	}
+
+}