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using Microsoft.VisualStudio.TestTools.UnitTesting;
using System;
using System.Collections.Generic;
using System.Text;
using System.Data;
using DirectSQL;
using DirectSQL.SqlLite;
using System.Threading.Tasks;
using System.Data.SQLite;
using System.Transactions;
namespace TestSqlLiteDatabase
{
[TestClass]
public class TransactionTest
{
[TestMethod]
public void TestTransaction()
{
SqlLiteDatabase db =
new SqlLiteDatabase(RandomNameMemDbConnectionString());
db.Process(CreateTableForTest);
try
{
using (var scope = new TransactionScope())
{
db.Process(InsertDataForTest);
}
}
catch (TransactionAbortedException)
{
//Ignore here
}
using (var scope = new TransactionScope())
{
db.Process(
(conn) =>
{
AssertDataCount(0, conn);
InsertDataForTest(conn);
AssertDataCount(1, conn);
}
);
scope.Complete();
}
db.Process(
(conn) => { AssertDataCount(1, conn); }
);
}
[TestMethod]
public async Task TestTransactionAsync()
{
SqlLiteDatabase db =
new SqlLiteDatabase(RandomNameMemDbConnectionString());
await db.ProcessAsync(async (connection) => {
await Task.Delay(1);
CreateTableForTest(connection);
});
try
{
using (var scope = new TransactionScope(TransactionScopeAsyncFlowOption.Enabled))
{
await db.ProcessAsync(
async (conn) =>
{
await Task.Run(() =>{
InsertDataForTest(conn);
});
}
);
}
}
catch (TransactionAbortedException)
{
//Ignore
}
using (var scope = new TransactionScope(TransactionScopeAsyncFlowOption.Enabled))
{
await db.ProcessAsync(
async (conn) =>
{
await Task.Run(() => {
AssertDataCount(0, conn);
InsertDataForTest(conn);
AssertDataCount(1, conn);
});
}
);
scope.Complete();
}
await db.ProcessAsync(
async (conn) =>
{
await Task.Run(() => {
AssertDataCount(1, conn);
});
}
);
}
private static void AssertDataCount(long expectedCount,SQLiteConnection conn)
{
Assert.AreEqual(
SqlLiteDatabase.ExecuteScalar("select count(*) from TEST_TABLE", conn),
expectedCount);
}
private static void CreateTableForTest(IDbConnection connection)
{
using (var command = connection.CreateCommand())
{
command.CommandText =
"create table " +
"TEST_TABLE(" +
"TEST_COL1 text" +
")";
command.ExecuteNonQuery();
}
}
private static void InsertDataForTest(SQLiteConnection conn)
{
SqlLiteDatabase.ExecuteNonQuery(
"insert into TEST_TABLE(TEST_COL1) " +
"VALUES(@testVal1)",
new (string, object)[] {
("@testVal1","testValue")
},
conn);
}
internal static string RandomNameMemDbConnectionString()
{
return $"DataSource=file:{Guid.NewGuid()}?mode=memory&cache=shared";
}
}
}