public void ConstructionCreatesFileIfNotExistTest()
{
var wrapper = new FileWrapperStream(TemporaryFile);
wrapper.Dispose();
Assert.IsTrue(System.IO.File.Exists(TemporaryFile));
}
public void PathNullConstructionTest()
{
var wrapper = new FileWrapperStream(null);
wrapper.Dispose();
}
public void PathRelativeConstructionTest()
{
var wrapper = new FileWrapperStream(System.IO.Path.Combine("..", "..", "Place", "Foo"));
wrapper.Dispose();
}
public void WriteToNonExistingFileTest()
{
Assert.IsFalse(System.IO.File.Exists(TemporaryFile));
using (var wrapper = new FileWrapperStream(TemporaryFile))
{
Assert.IsFalse(wrapper.IsAwaitingDiskFlush);
System.IO.StreamWriter writer = new System.IO.StreamWriter(wrapper);
writer.AutoFlush = true;
writer.Write("test");
}
using (System.IO.StreamReader reader = new System.IO.StreamReader(TemporaryFile))
{
string data = reader.ReadToEnd();
Assert.AreEqual("test", data);
}
}
public void PathEmptyConstructionTest()
{
var wrapper = new FileWrapperStream(string.Empty);
wrapper.Dispose();
}
public void WriteSetsDiskFlushFlag()
{
using (var wrapper = new FileWrapperStream(TemporaryFile))
{
wrapper.Seek(0, System.IO.SeekOrigin.Begin);
Assert.IsFalse(wrapper.IsAwaitingDiskFlush);
wrapper.WriteByte(4);
Assert.IsTrue(wrapper.IsAwaitingDiskFlush);
}
}
public void WriteToExistingFileTest()
{
using (System.IO.StreamWriter writer = System.IO.File.CreateText(TemporaryFile))
{
writer.Write("blah");
writer.Close();
}
using (var wrapper = new FileWrapperStream(TemporaryFile))
{
wrapper.Seek(0, System.IO.SeekOrigin.End);
Assert.IsFalse(wrapper.IsAwaitingDiskFlush);
System.IO.StreamWriter writer = new System.IO.StreamWriter(wrapper);
writer.AutoFlush = true;
writer.Write("test");
}
using (System.IO.StreamReader reader = new System.IO.StreamReader(TemporaryFile))
{
string data = reader.ReadToEnd();
Assert.AreEqual("blahtest", data);
}
}
public void LoadExistingFileTest()
{
System.IO.StreamWriter writer = System.IO.File.CreateText(TemporaryFile);
writer.Write("blah");
writer.Close();
var wrapper = new FileWrapperStream(TemporaryFile);
// Ensure that new FileWrappers start at the beginning
Assert.AreEqual(0, wrapper.Position);
Assert.AreEqual(4, wrapper.Length);
wrapper.Position = 0;
System.IO.StreamReader reader = new System.IO.StreamReader(wrapper);
string data = reader.ReadToEnd();
Assert.AreEqual("blah", data);
wrapper.Dispose();
}
public void ConstructionDoesNotEraseFileIfExistTest()
{
System.IO.StreamWriter writer = System.IO.File.CreateText(TemporaryFile);
writer.Write("blah");
writer.Close();
System.IO.FileInfo preInfo = new System.IO.FileInfo(TemporaryFile);
Assert.IsTrue(preInfo.Length != 0);
var wrapper = new FileWrapperStream(TemporaryFile);
wrapper.Dispose();
Assert.IsTrue(System.IO.File.Exists(TemporaryFile));
System.IO.FileInfo postInfo = new System.IO.FileInfo(TemporaryFile);
Assert.IsTrue(postInfo.Length != 0);
}
public void ConstructionFailsIfFileIfCannotOpenFile()
{
using(System.IO.BinaryWriter writer = new System.IO.BinaryWriter(new System.IO.FileStream(TemporaryFile, System.IO.FileMode.OpenOrCreate)))
{
var wrapper = new FileWrapperStream(TemporaryFile);
wrapper.Dispose();
Assert.IsTrue(System.IO.File.Exists(TemporaryFile));
}
}
public void CanSetLength()
{
var wrapper = new FileWrapperStream(TemporaryFile);
Assert.AreEqual(0, wrapper.Length);
wrapper.SetLength(200);
Assert.AreEqual(200, wrapper.Length);
wrapper.Dispose();
}
public void FlushAllTest()
{
int no = 4;
string path;
FileWrapperStream[] streams = new FileWrapperStream[no];
string dataString = "Blah";
byte[] data = StrToByteArray(dataString);
for (int i = 0; i < no; i++)
{
path = System.IO.Path.Combine(AppContext.BaseTestDirectory, "Foo" + i + ".xml");
streams[i] = (FileWrapperStream)AppContext.StreamManager.GetStream(path);
Assert.IsFalse(streams[i].IsAwaitingDiskFlush);
streams[i].Write(data, 0, data.Length);
Assert.IsTrue(streams[i].IsAwaitingDiskFlush);
}
AppContext.StreamManager.FlushAll();
for (int i = 0; i < no; i++)
{
Assert.IsFalse(streams[i].IsAwaitingDiskFlush);
}
//delete files after test
for (int i = 0; i < no; i++)
{
path = System.IO.Path.Combine(AppContext.BaseTestDirectory, "Foo" + i + ".xml");
(new FileInfo(path)).Delete();
}
}
