Add Teradata test case for Select

src/test/java/com/alibaba/druid/sql/TeradataTest.java

@@ -0,0 +1,30 @@
+package com.alibaba.druid.sql;
+
+import java.util.List;
+
+import com.alibaba.druid.sql.ast.SQLStatement;
+import com.alibaba.druid.sql.dialect.teradata.visitor.TeradataOutputVisitor;
+
+import junit.framework.TestCase;
+
+public class TeradataTest extends TestCase{
+	protected String output(List<SQLStatement> stmtList) {
+		StringBuilder out = new StringBuilder();
+		TeradataOutputVisitor visitor = new TeradataOutputVisitor(out);
+
+		for (SQLStatement stmt : stmtList) {
+			stmt.accept(visitor);
+		}
+
+		return out.toString();
+	}
+	
+	   protected void print(List<SQLStatement> stmtList) {
+	        String text = output(stmtList);
+	        String outputProperty = System.getProperty("druid.output");
+	        if ("false".equals(outputProperty)) {
+	            return;
+	        }
+	        System.out.println(text);
+	    }
+}