/*
* Copyright 1999-2015 dangdang.com.
* <p>
* 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.
* </p>
*/
package com.dangdang.ddframe.rdb.sharding.parser.visitor.basic.mysql;
import com.alibaba.druid.sql.ast.expr.SQLVariantRefExpr;
import com.alibaba.druid.sql.visitor.SQLEvalVisitorUtils;
import com.google.common.collect.Lists;
import org.junit.Test;
import static org.hamcrest.CoreMatchers.nullValue;
import static org.hamcrest.core.Is.is;
import static org.junit.Assert.assertThat;
public class MySQLEvalVisitorTest {
@Test
public void testVisit() throws Exception {
SQLVariantRefExpr expr = new SQLVariantRefExpr("?");
expr.setIndex(1);
MySQLEvalVisitor visitor = new MySQLEvalVisitor();
visitor.setParameters(Lists.<Object>newArrayList(1, 2));
expr.accept(visitor);
assertThat((Integer) SQLEvalVisitorUtils.getValue(expr), is(2));
assertThat((Integer) expr.getAttribute(MySQLEvalVisitor.EVAL_VAR_INDEX), is(1));
}
@Test
public void testVisitErrorIndex() throws Exception {
SQLVariantRefExpr expr = new SQLVariantRefExpr("?");
expr.setIndex(2);
MySQLEvalVisitor visitor = new MySQLEvalVisitor();
visitor.setParameters(Lists.<Object>newArrayList(1, 2));
expr.accept(visitor);
assertThat(SQLEvalVisitorUtils.getValue(expr), nullValue());
}
@Test
public void testVisitNotOverride() throws Exception {
SQLVariantRefExpr expr = new SQLVariantRefExpr("?");
expr.setIndex(1);
expr.getAttributes().put(MySQLEvalVisitor.EVAL_VALUE, "test");
MySQLEvalVisitor visitor = new MySQLEvalVisitor();
visitor.setParameters(Lists.<Object>newArrayList(1, 2));
expr.accept(visitor);
assertThat((String) SQLEvalVisitorUtils.getValue(expr), is("test"));
}
@Test
public void testVisitWrongName() throws Exception {
SQLVariantRefExpr expr = new SQLVariantRefExpr("");
expr.setIndex(1);
MySQLEvalVisitor visitor = new MySQLEvalVisitor();
visitor.setParameters(Lists.<Object>newArrayList(1, 2));
expr.accept(visitor);
assertThat(SQLEvalVisitorUtils.getValue(expr), nullValue());
}
@Test
public void testVisitNullValue() throws Exception {
SQLVariantRefExpr expr = new SQLVariantRefExpr("?");
expr.setIndex(1);
MySQLEvalVisitor visitor = new MySQLEvalVisitor();
visitor.setParameters(Lists.<Object>newArrayList(1, null));
expr.accept(visitor);
assertThat(SQLEvalVisitorUtils.getValue(expr), is(MySQLEvalVisitor.EVAL_VALUE_NULL));
}
}