DeclareCursorStatementTests.cs

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// 
//  Copyright 2010-2014 Deveel
// 
//    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.
using System;
using System.Linq;

using Deveel.Data.Sql.Cursors;
using Deveel.Data.Sql.Tables;
using Deveel.Data.Types;

using NUnit.Framework;

namespace Deveel.Data.Sql.Statements {
    [TestFixture]
    public class DeclareCursorStatementTests : ContextBasedTest {
        protected override ISession CreateAdminSession(IDatabase database) {
            using (var session = base.CreateAdminSession(database)) {
                using (var query = session.CreateQuery()) {
                    var tableInfo = new TableInfo(ObjectName.Parse("APP.test_table"));
                    tableInfo.AddColumn("a", PrimitiveTypes.Integer());
                    tableInfo.AddColumn("b", PrimitiveTypes.String(), false);

                    query.CreateTable(tableInfo, false, false);
                    query.Commit();
                }
            }

            return base.CreateAdminSession(database);
        }

        [Test]
        public void DeclareInsensitiveCursor_NoArguments() {
            const string sql = "DECLARE CURSOR c1 INSENSITIVE IS SELECT * FROM test_table WHERE a = 1";

            var statements = SqlStatement.Parse(sql);
            Assert.IsNotNull(statements);

            var statementList = statements.ToList();
            Assert.IsNotEmpty(statementList);
            Assert.AreEqual(1, statementList.Count);
            Assert.IsInstanceOf<DeclareCursorStatement>(statementList[0]);

            var statement = (DeclareCursorStatement) statementList[0];
            Assert.AreEqual("c1", statement.CursorName);
            Assert.AreNotEqual(0, (statement.Flags & CursorFlags.Insensitive));
            Assert.IsEmpty(statement.Parameters);
        }

        [Test]
        public void DeclareCursorWithArguments() {
            const string sql = "DECLARE CURSOR c1 (arg1 INT, arg2 VARCHAR) IS SELECT * FROM test_table WHERE a = arg1";

            var statements = SqlStatement.Parse(sql);
            Assert.IsNotNull(statements);

            var statementList = statements.ToList();
            Assert.IsNotEmpty(statementList);
            Assert.AreEqual(1, statementList.Count);
            Assert.IsInstanceOf<DeclareCursorStatement>(statementList[0]);

            var statement = (DeclareCursorStatement)statementList[0];
            Assert.AreEqual("c1", statement.CursorName);
            Assert.IsNotEmpty(statement.Parameters);

            var arg1 = statement.Parameters.First();
            Assert.IsNotNull(arg1);
            Assert.AreEqual("arg1", arg1.ParameterName);
            Assert.IsInstanceOf<NumericType>(arg1.ParameterType);
            Assert.AreEqual(0, arg1.Offset);
        }
    }
}