add OracleOutputVisitor prettyFormat test

src/test/java/com/alibaba/druid/sql/oracle/demo/OutputVisitorTest.java

@@ -0,0 +1,46 @@
+package com.alibaba.druid.sql.oracle.demo;
+
+import com.alibaba.druid.sql.ast.SQLStatement;
+import com.alibaba.druid.sql.dialect.oracle.visitor.OracleOutputVisitor;
+import com.alibaba.druid.sql.parser.SQLParserUtils;
+import com.alibaba.druid.sql.parser.SQLStatementParser;
+import com.alibaba.druid.sql.visitor.SQLASTOutputVisitor;
+import com.alibaba.druid.sql.visitor.SQLASTVisitor;
+import com.alibaba.druid.util.JdbcUtils;
+import org.junit.Test;
+
+import java.util.List;
+
+/**
+ *
+ * User: carvin
+ * Date: 12-11-13
+ * Time: 下午7:16
+ * Test OralceOutputVisitor and start with ... connect by parser.
+ */
+public class OutputVisitorTest {
+    @Test
+    public void testConnectByParserAndPrettyFormatOutput() {
+        String sql = "select * from ge_rms_company start with comcode = '00' connect by nocycle prior comcode = uppercomcode";
+        SQLStatementParser parser = SQLParserUtils.createSQLStatementParser(sql, JdbcUtils.ORACLE);
+        List<SQLStatement> stmtList = parser.parseStatementList();
+        StringBuilder out = new StringBuilder();
+
+        SQLASTOutputVisitor visitor = new OracleOutputVisitor(out);
+        for(SQLStatement statement : stmtList) {
+            statement.accept(visitor);
+        }
+        // PrettyFormat use default : true
+        System.out.println(out);
+        System.out.println("=========================================\n");
+
+        out.setLength(0);
+        visitor = new OracleOutputVisitor(out);
+        // setPrettyFormat : false
+        visitor.setPrettyFormat(false);
+        for(SQLStatement statement : stmtList) {
+            statement.accept(visitor);
+        }
+        System.out.println(out);
+    }
+}