Added JSON datatype test case

Author: Divang Sharma

src/main/java/com/microsoft/sqlserver/jdbc/SQLServerDataTable.java

@@ -300,6 +300,7 @@ private void internalAddrow(JDBCType jdbcType, Object val, Object[] rowValues,
                 case LONGVARCHAR:
                 case LONGNVARCHAR:
                 case SQLXML:
+                case JSON:
                     if (val instanceof UUID)
                         val = val.toString();
                     nValueLen = (2 * ((String) val).length());

src/test/java/com/microsoft/sqlserver/jdbc/tvp/TVPTypesTest.java

@@ -149,6 +149,36 @@ public void testXML() throws SQLException {
         }
     }
 
+    /**
+     * Test JSON support
+     * 
+     * @throws SQLException
+     */
+    @Test
+    public void testJSON() throws SQLException {
+        createTables("json");
+        createTVPS("json");
+        value = "{\"severity\":\"TRACE\",\"duration\":200,\"date\":\"2024-12-17T15:45:56\"}";
+
+        tvp = new SQLServerDataTable();
+        tvp.addColumnMetadata("c1", microsoft.sql.Types.JSON);
+        tvp.addRow(value);
+
+        try (SQLServerPreparedStatement pstmt = (SQLServerPreparedStatement) connection.prepareStatement(
+                "INSERT INTO " + AbstractSQLGenerator.escapeIdentifier(tableName) + " select * from ? ;")) {
+            pstmt.setStructured(1, tvpName, tvp);
+
+            pstmt.execute();
+
+            try (Connection con = getConnection(); Statement stmt = con.createStatement();
+                    ResultSet rs = stmt.executeQuery(
+                            "select c1 from " + AbstractSQLGenerator.escapeIdentifier(tableName) + " ORDER BY rowId")) {
+                while (rs.next())
+                    assertEquals(rs.getString(1), value);
+            }
+        }
+    }
+
     /**
      * Test ntext support
      *