feat(desktop): add database info and SQL statement markers

agents/drivers/h2/src/test/java/com/dbx/agent/h2/H2AgentTest.java

@@ -10,6 +10,7 @@ import com.dbx.agent.TableInfo;
 import com.dbx.agent.test.JdbcExecutionBehaviorTest;
 import com.dbx.agent.test.JdbcMetadataBehaviorTest;
 import java.util.List;
+import java.util.Map;
 import org.junit.jupiter.api.Assertions;
 import org.junit.jupiter.api.Test;
 
@@ -41,6 +42,35 @@ class H2AgentMigrationTest {
 
         Assertions.assertEquals("jdbc:h2:tcp://127.0.0.1:9092/test", H2Agent.buildUrl(params));
     }
+
+    @Test
+    @SuppressWarnings("unchecked")
+    void exposesDatabaseMetadataForTestAndConnectedConnection() {
+        ConnectParams params = new ConnectParams("", 0, "mem:dbx-agent-info;DB_CLOSE_DELAY=-1", "sa", "", "", "", false);
+        H2Agent agent = new H2Agent();
+
+        Map<String, Object> result = agent.testConnectionWithInfo(params);
+        Assertions.assertEquals(true, result.get("ok"));
+        Map<String, String> testedInfo = (Map<String, String>) result.get("databaseInfo");
+        assertH2DatabaseInfo(testedInfo);
+
+        agent.connect(params);
+        try {
+            assertH2DatabaseInfo(agent.getDatabaseInfo());
+        } finally {
+            agent.disconnect();
+        }
+    }
+
+    private static void assertH2DatabaseInfo(Map<String, String> info) {
+        Assertions.assertEquals("H2", info.get("productName"));
+        Assertions.assertFalse(info.get("productVersion").isEmpty());
+        Assertions.assertFalse(info.get("driverName").isEmpty());
+        Assertions.assertFalse(info.get("driverVersion").isEmpty());
+        Assertions.assertFalse(info.get("jdbcVersion").isEmpty());
+        Assertions.assertEquals("upper", info.get("unquotedIdentifierCase"));
+        Assertions.assertFalse(info.containsKey("quotedIdentifierCase"));
+    }
 }
 
 class H2ExecutionBehaviorTest extends JdbcExecutionBehaviorTest {