public void PageReadWriteTest()
{
var target = new SimpleDatabase_Accessor("AAA", false);
target.CreateTableFile("Car", 64, 1024, 128);
var a = target.ReadDataFileHeader("Car", 0);
var b = target.ReadDataFileHeader("Car", 1);
Page p1 = target.DiskReadPage("Car", 0, 0);
Page p2 = target.DiskReadPage("Car", 12, 1);
var encoder = new UTF8Encoding();
var byteArray = encoder.GetBytes("Page Data");
var row = p1.CreateEmptyRow();
Array.Copy(byteArray, row.Data, byteArray.Length);
p1.UpdateRow(row, 8);
target.DiskWritePage("Car", p1, p1.FileId);
p1 = target.DiskReadPage("Car", 0, 0);
Assert.AreEqual("Page Data", encoder.GetString(p1.GetRow(8).Data, 0, byteArray.Length));
p2.UpdateRow(row, p2.RowsPerPage - 1);
target.DiskWritePage("Car", p2, p2.FileId);
var p3 = target.DiskReadPage("Car", 12, 1);
Assert.AreEqual("Page Data", encoder.GetString(p3.GetRow(p3.RowsPerPage - 1).Data, 0, byteArray.Length));
target.DiskWritePage("Car", p3, p3.FileId);
var p4 = target.DiskReadPage("Car", 12, 1);
Assert.AreEqual(p3.NextFreeRowIndex, p4.NextFreeRowIndex);
Assert.AreEqual(p3.PageIndex, p4.PageIndex);
Assert.AreEqual(p3.PageSize, p4.PageSize);
Assert.AreEqual(p3.RowSize, p4.RowSize);
Assert.AreEqual(p3.RowsPerPage, p4.RowsPerPage);
Assert.AreEqual(p3.FileId, p4.FileId);
}
public void PageReadWriteTest()
{
var target = new SimpleDatabase_Accessor("AAA", false);
target.CreateTableFile("Car", 64, 1024, 128);
var a = target.ReadDataFileHeader("Car", 0);
var b = target.ReadDataFileHeader("Car", 1);
Page p1 = target.DiskReadPage("Car", 0, 0);
Page p2 = target.DiskReadPage("Car", 12, 1);
var encoder = new UTF8Encoding();
var byteArray = encoder.GetBytes("Page Data");
var row = p1.CreateEmptyRow();
Array.Copy(byteArray, row.Data, byteArray.Length);
p1.UpdateRow(row, 8);
target.DiskWritePage("Car", p1, p1.FileId);
p1 = target.DiskReadPage("Car", 0, 0);
Assert.AreEqual("Page Data", encoder.GetString(p1.GetRow(8).Data, 0, byteArray.Length));
p2.UpdateRow(row, p2.RowsPerPage - 1);
target.DiskWritePage("Car", p2, p2.FileId);
var p3 = target.DiskReadPage("Car", 12, 1);
Assert.AreEqual("Page Data", encoder.GetString(p3.GetRow(p3.RowsPerPage - 1).Data, 0, byteArray.Length));
target.DiskWritePage("Car", p3, p3.FileId);
var p4 = target.DiskReadPage("Car", 12, 1);
Assert.AreEqual(p3.NextFreeRowIndex, p4.NextFreeRowIndex);
Assert.AreEqual(p3.PageIndex, p4.PageIndex);
Assert.AreEqual(p3.PageSize, p4.PageSize);
Assert.AreEqual(p3.RowSize, p4.RowSize);
Assert.AreEqual(p3.RowsPerPage, p4.RowsPerPage);
Assert.AreEqual(p3.FileId, p4.FileId);
}
