Test/td 5626 (#7103)

* [TD-5626]<test>: add timezone test case for jdbc

* change

* change

* change

* change

* [TD-5614]<hotfix>: handle client and server time not synchronized

* change

* do not test TimeZone Case

* insert two rows

src/connector/jdbc/pom.xml

@@ -122,6 +122,7 @@
                         <exclude>**/TSDBJNIConnectorTest.java</exclude>
                         <exclude>**/TaosInfoMonitorTest.java</exclude>
                         <exclude>**/UnsignedNumberJniTest.java</exclude>
+                        <exclude>**/TimeZoneTest.java</exclude>
                     </excludes>
                     <testFailureIgnore>true</testFailureIgnore>
                 </configuration>

src/connector/jdbc/src/main/java/com/taosdata/jdbc/TSDBJNIConnector.java

@@ -80,7 +80,8 @@ public class TSDBJNIConnector {
 
         this.taos = this.connectImp(host, port, dbName, user, password);
         if (this.taos == TSDBConstants.JNI_NULL_POINTER) {
-            throw TSDBError.createSQLException(TSDBErrorNumbers.ERROR_JNI_CONNECTION_NULL);
+            String errMsg = this.getErrMsg(0);
+            throw TSDBError.createSQLException(TSDBErrorNumbers.ERROR_JNI_CONNECTION_NULL, errMsg);
         }
         // invoke connectImp only here
         taosInfo.conn_open_increment();

src/connector/jdbc/src/test/java/com/taosdata/jdbc/cases/QueryDataTest.java

@@ -34,9 +34,8 @@ public class QueryDataTest {
 
             String createTableSql = "create table " + stbName + "(ts timestamp, name binary(64))";
             statement.executeUpdate(createTableSql);
-
         } catch (SQLException e) {
-            return;
+            e.printStackTrace();
         }
     }
 

src/connector/jdbc/src/test/java/com/taosdata/jdbc/cases/TimeZoneTest.java

+package com.taosdata.jdbc.cases;
+
+import com.taosdata.jdbc.TSDBDriver;
+import org.junit.Test;
+
+import java.sql.*;
+import java.time.Instant;
+import java.time.LocalDateTime;
+import java.time.ZoneId;
+import java.util.Properties;
+
+public class TimeZoneTest {
+
+    private String url = "jdbc:TAOS://127.0.0.1:6030/?user=root&password=taosdata";
+
+    @Test
+    public void javaTimeZone() {
+        LocalDateTime localDateTime = LocalDateTime.of(1970, 1, 1, 0, 0, 0);
+
+        Instant instant = localDateTime.atZone(ZoneId.of("UTC-8")).toInstant();
+        System.out.println("UTC-8: " + instant.getEpochSecond() + "," + instant);
+
+        instant = localDateTime.atZone(ZoneId.of("UT")).toInstant();
+        System.out.println("UTC: " + instant.getEpochSecond() + "," + instant);
+
+
+        instant = localDateTime.atZone(ZoneId.of("UTC+8")).toInstant();
+        System.out.println("UTC+8: " + instant.getEpochSecond() + "," + instant);
+    }
+
+    @Test
+    public void taosTimeZone() {
+        // given
+        Properties props = new Properties();
+        props.setProperty(TSDBDriver.PROPERTY_KEY_TIME_ZONE, "UTC-8");
+
+        // when and then
+        try (Connection connection = DriverManager.getConnection(url, props)) {
+            Statement stmt = connection.createStatement();
+
+            stmt.execute("drop database if exists timezone_test");
+            stmt.execute("create database if not exists timezone_test keep 365000");
+            stmt.execute("use timezone_test");
+            stmt.execute("create table weather(ts timestamp, temperature float)");
+
+            stmt.execute("insert into timezone_test.weather(ts, temperature) values('1970-01-01 00:00:00', 1.0)");
+
+            ResultSet rs = stmt.executeQuery("select * from timezone_test.weather");
+            while (rs.next()) {
+                Timestamp ts = rs.getTimestamp("ts");
+                System.out.println("ts: " + ts.getTime() + "," + ts);
+            }
+
+            stmt.execute("insert into timezone_test.weather(ts, temperature, humidity) values('1970-01-02 00:00:00', 1.0, 2.0)");
+
+            rs = stmt.executeQuery("select * from timezone_test.weather");
+            while (rs.next()) {
+                Timestamp ts = rs.getTimestamp("ts");
+                System.out.println("ts: " + ts.getTime() + "," + ts);
+            }
+
+
+            stmt.execute("drop database if exists timezone_test");
+
+            stmt.close();
+        } catch (SQLException e) {
+            e.printStackTrace();
+        }
+    }
+
+}
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