From b6cde0db7bd001449e191b606d167cac5376a697 Mon Sep 17 00:00:00 2001
From: wenshao <szujobs@hotmail.com>
Date: Mon, 4 Sep 2017 11:19:38 +0800
Subject: [PATCH] add testcase for issue #1870

---
 .../sql/mysql/select/MySqlSelectTest_57.java  | 69 +++++++++++++++++++
 1 file changed, 69 insertions(+)
 create mode 100644 src/test/java/com/alibaba/druid/bvt/sql/mysql/select/MySqlSelectTest_57.java

diff --git a/src/test/java/com/alibaba/druid/bvt/sql/mysql/select/MySqlSelectTest_57.java b/src/test/java/com/alibaba/druid/bvt/sql/mysql/select/MySqlSelectTest_57.java
new file mode 100644
index 0000000000..520d1efa6d
--- /dev/null
+++ b/src/test/java/com/alibaba/druid/bvt/sql/mysql/select/MySqlSelectTest_57.java
@@ -0,0 +1,69 @@
+/*
+ * Copyright 1999-2017 Alibaba Group Holding Ltd.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.alibaba.druid.bvt.sql.mysql.select;
+
+import com.alibaba.druid.sql.MysqlTest;
+import com.alibaba.druid.sql.SQLUtils;
+import com.alibaba.druid.sql.ast.SQLStatement;
+import com.alibaba.druid.sql.visitor.SchemaStatVisitor;
+import com.alibaba.druid.util.JdbcConstants;
+
+import java.util.List;
+
+public class MySqlSelectTest_57 extends MysqlTest {
+
+    public void test_0() throws Exception {
+        String sql =  "SELECT SUBSTR('12345678' FROM 2 FOR 4)";
+
+        System.out.println(sql);
+
+
+        List<SQLStatement> statementList = SQLUtils.parseStatements(sql, JdbcConstants.MYSQL, true);
+        SQLStatement stmt = statementList.get(0);
+
+        assertEquals(1, statementList.size());
+
+        SchemaStatVisitor visitor = SQLUtils.createSchemaStatVisitor(JdbcConstants.MYSQL);
+        stmt.accept(visitor);
+
+//        System.out.println("Tables : " + visitor.getTables());
+        System.out.println("fields : " + visitor.getColumns());
+//        System.out.println("coditions : " + visitor.getConditions());
+//        System.out.println("orderBy : " + visitor.getOrderByColumns());
+        
+//        assertEquals(1, visitor.getTables().size());
+//        assertEquals(1, visitor.getColumns().size());
+//        assertEquals(0, visitor.getConditions().size());
+//        assertEquals(0, visitor.getOrderByColumns().size());
+        
+        {
+            String output = SQLUtils.toMySqlString(stmt);
+            assertEquals("SELECT SUBSTR('12345678' FROM 2 FOR 4)", //
+                                output);
+        }
+        {
+            String output = SQLUtils.toMySqlString(stmt, SQLUtils.DEFAULT_LCASE_FORMAT_OPTION);
+            assertEquals("select SUBSTR('12345678' from 2 for 4)", //
+                                output);
+        }
+
+        {
+            String output = SQLUtils.toMySqlString(stmt, new SQLUtils.FormatOption(true, true, true));
+            assertEquals("SELECT SUBSTR(? FROM ? FOR ?)", //
+                    output);
+        }
+    }
+}