diff --git a/src/test/java/Controller/TestLogWriter.java b/src/test/java/Controller/TestLogWriter.java
new file mode 100644
index 0000000..9fa00f0
--- /dev/null
+++ b/src/test/java/Controller/TestLogWriter.java
@@ -0,0 +1,79 @@
+package Controller;
+
+import Model.*;
+import org.junit.Before;
+import org.junit.Test;
+
+import java.util.ArrayList;
+
+import static org.junit.Assert.assertEquals;
+
+
+/**
+ * Test if LogEntry(observable) updates the LogWriter(observer)
+ *  and writes to log file log.txt*
+ */
+public class TestLogWriter {
+
+    /**
+     * d_Ge is reference for gameEngine
+     */
+    public GameEngine d_Ge;
+    Player d_Player1;
+    Player d_Player2;
+    WargameMap d_Map;
+    ArrayList<Player> d_Players;
+    String d_PlayerName="xyz";
+    EngineCommand d_Rge;
+    String[] d_Data={"gameplayer", "-add", "Alekhya"};
+    String[] d_Data1 = new String[]{"loadmap","world.map"};
+    String d_MapName;
+
+    /**
+     * initial setup
+     */
+    @Before
+    public void before(){
+        d_Ge = new GameEngine();
+        d_Rge = new EngineCommand();
+        d_Players = new ArrayList<Player>();
+        d_Map = new WargameMap("demo.map");
+        d_Player1 = new Player("Alekhya");
+        d_Player2 = new Player("Sujith");
+        d_Players.add(d_Player1);
+        d_Players.add(d_Player2);
+    }
+
+    /**
+     *Test if LogEntryBuffer(observable) updates the WriteLogEntry(observer)
+     *  to write to log file log.txt
+     */
+    @Test
+    public void testLogEntryBuffer(){
+
+        //Testing preload phase logs are stored in log file or not
+        d_Ge.setPhase(new MapEditorLoad(d_Ge));
+        d_MapName= "demo.map";
+        d_Ge.d_LogEntry.setGamePhase(d_Ge.d_Phase);
+        d_Ge.d_Phase.loadMap(d_Data1,d_MapName);
+
+        //Testing if invalid
+        System.out.println("Testing invalid command(gameplayer) in phase: "+ d_Ge.d_Phase.getD_PhaseName());
+        d_Ge.d_Phase.gamePlayer(d_Data,d_Players,d_Player1.getPlayerName());
+        assertEquals("Invalid command in PostLoad state","Invalid command in PostLoad state");
+
+        d_Map = d_Rge.editMap(d_MapName);
+        d_Ge.d_Phase.showMap(d_Map);
+
+        //Testing startup phase are stored in log file or not
+        d_Ge.setPhase(new StartUp(d_Ge));
+        d_Ge.d_LogEntry.setGamePhase(d_Ge.d_Phase);
+        d_Ge.d_Phase.gamePlayer(d_Data,d_Players,d_Player1.getPlayerName());
+        d_Ge.d_Phase.gamePlayer(d_Data,d_Players,d_Player2.getPlayerName());
+        d_Ge.d_Phase.assignCountries(d_Map,d_Players );
+
+    }
+
+
+}
+