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

using NUnit.Framework;

namespace Deveel.Data.Sql {
    [TestFixture]
    public class DropTableTests : ContextBasedTest {
        protected override ISession CreateAdminSession(IDatabase database) {
            using (var session = base.CreateAdminSession(database)) {
                using (var query = session.CreateQuery()) {
                    var tn1 = ObjectName.Parse("APP.test_table1");
                    var tableInfo1 = new TableInfo(tn1);
                    tableInfo1.AddColumn(new ColumnInfo("id", PrimitiveTypes.Integer()));
                    tableInfo1.AddColumn(new ColumnInfo("name", PrimitiveTypes.String()));
                    tableInfo1.AddColumn(new ColumnInfo("date", PrimitiveTypes.DateTime()));
                    query.CreateTable(tableInfo1);
                    query.AddPrimaryKey(tn1, "id");

                    var tn2 = ObjectName.Parse("APP.test_table2");
                    var tableInfo2 = new TableInfo(tn2);
                    tableInfo2.AddColumn(new ColumnInfo("id", PrimitiveTypes.Integer()));
                    tableInfo2.AddColumn(new ColumnInfo("other_id", PrimitiveTypes.Integer()));
                    tableInfo2.AddColumn(new ColumnInfo("count", PrimitiveTypes.Integer()));
                    query.CreateTable(tableInfo2);
                    query.AddPrimaryKey(tn2, "id");
                    query.AddForeignKey(tn2, new[] { "other_id" }, tn1, new[] { "id" }, ForeignKeyAction.Cascade, ForeignKeyAction.Cascade, null);

                    query.Commit();
                }
            }

            return base.CreateAdminSession(database);
        }

        [Test]
        public void DropNonReferencedTable() {
            var tableName = ObjectName.Parse("APP.test_table2");
            Assert.DoesNotThrow(() => Query.DropTable(tableName));

            bool exists = false;
            Assert.DoesNotThrow(() => exists = Query.TableExists(tableName));
            Assert.IsFalse(exists);
        }

        [Test]
        public void DropReferencedTable() {
            var tableName = ObjectName.Parse("APP.test_table1");
            Assert.Throws<ConstraintViolationException>(() => Query.DropTable(tableName));

            bool exists = false;
            Assert.DoesNotThrow(() => exists = Query.TableExists(tableName));
            Assert.IsTrue(exists);
        }

        [Test]
        public void DropAllTables() {
            var tableNames = new[] {
                ObjectName.Parse("APP.test_table1"),
                ObjectName.Parse("APP.test_table2"),
            };

            Assert.DoesNotThrow(() => Query.DropTables(tableNames));
        }
    }
}