Fix comment

Add test

src/main/java/io/lettuce/core/protocol/ReadOnlyCommands.java

@@ -71,10 +71,10 @@ public static ReadOnlyPredicate asPredicate() {
 
     enum CommandName {
         ASKING, BITCOUNT, BITPOS, CLIENT, COMMAND, DUMP, ECHO, EVAL_RO, EVALSHA_RO, EXISTS, FCALL_RO, //
-        GEODIST, GEOPOS, GEORADIUS, GEORADIUS_RO, GEORADIUSBYMEMBER, GEORADIUSBYMEMBER_RO, GEOSEARCH, GEOHASH, GET, GETBIT, //
+        GEODIST, GEOPOS, GEORADIUS_RO, GEORADIUSBYMEMBER_RO, GEOSEARCH, GEOHASH, GET, GETBIT, //
         GETRANGE, HEXISTS, HGET, HGETALL, HKEYS, HLEN, HMGET, HRANDFIELD, HSCAN, HSTRLEN, //
         HVALS, INFO, KEYS, LINDEX, LLEN, LPOS, LRANGE, SORT_RO, MGET, PFCOUNT, PTTL, //
-        RANDOMKEY, READWRITE, SCAN, SCARD, SCRIPT, //
+        RANDOMKEY, SCAN, SCARD, SCRIPT, //
         SDIFF, SINTER, SISMEMBER, SMISMEMBER, SMEMBERS, SRANDMEMBER, SSCAN, STRLEN, //
         SUNION, TIME, TTL, TYPE, //
         XINFO, XLEN, XPENDING, XRANGE, XREVRANGE, XREAD, //

src/test/java/io/lettuce/core/cluster/ClusterReadOnlyCommandsUnitTests.java

@@ -16,7 +16,7 @@ class ClusterReadOnlyCommandsUnitTests {
 
     @Test
     void testCount() {
-        assertThat(ClusterReadOnlyCommands.getReadOnlyCommands()).hasSize(86);
+        assertThat(ClusterReadOnlyCommands.getReadOnlyCommands()).hasSize(83);
     }
 
     @Test

src/test/java/io/lettuce/core/commands/ReadOnlyCommandIntegrationTests.java

@@ -0,0 +1,61 @@
+package io.lettuce.core.commands;
+
+import io.lettuce.core.TestSupport;
+import io.lettuce.core.api.sync.RedisCommands;
+import io.lettuce.core.cluster.ClusterReadOnlyCommands;
+import io.lettuce.core.cluster.ClusterTestUtil;
+import io.lettuce.core.cluster.api.StatefulRedisClusterConnection;
+import io.lettuce.core.cluster.api.sync.RedisClusterCommands;
+import io.lettuce.core.protocol.CommandType;
+import io.lettuce.core.protocol.ProtocolKeyword;
+import io.lettuce.core.protocol.ReadOnlyCommands;
+import io.lettuce.test.KeyValueStreamingAdapter;
+import io.lettuce.test.LettuceExtension;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.TestInstance;
+import org.junit.jupiter.api.extension.ExtendWith;
+
+import javax.inject.Inject;
+import java.util.LinkedHashMap;
+import java.util.List;
+import java.util.Map;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+/**
+ * @author Thach Le
+ */
+@ExtendWith(LettuceExtension.class)
+@TestInstance(TestInstance.Lifecycle.PER_CLASS)
+class ReadOnlyCommandIntegrationTests extends TestSupport {
+
+    private final RedisCommands<String, String> redis;
+
+    @Inject
+    protected ReadOnlyCommandIntegrationTests(RedisCommands<String, String> redis) {
+        this.redis = redis;
+    }
+
+    @BeforeEach
+    void setUp() {
+        redis.flushall();
+    }
+
+    @Test
+    void testReadOnlyCommands() {
+        for (ProtocolKeyword readOnlyCommand : ClusterReadOnlyCommands.getReadOnlyCommands()) {
+            assertThat(isCommandReadOnly(readOnlyCommand.name())).isTrue();
+        }
+    }
+
+    private boolean isCommandReadOnly(String commandName) {
+        List<Object> commandInfo = redis.commandInfo(commandName);
+        if (commandInfo == null || commandInfo.isEmpty()) {
+            throw new IllegalArgumentException("Command not found: " + commandName);
+        }
+
+        List<Object> flags = (List<Object>) commandInfo.get(2); // Index 2 is the flags list
+        return flags.contains("readonly") && !flags.contains("write");
+    }
+}