public void FileChangeRestoreMissing()
{
FileChange f;
String filePath;
//
// Make sure the original file does not exist.
//
filePath = Path.GetTempFileName();
new FileInfo(filePath).Delete();
f = new FileChange(new FileInfo(filePath));
//
// Update the content.
//
using (FileStream writer = new FileInfo(filePath).OpenWrite())
{
byte[] data = new System.Text.UTF8Encoding().GetBytes("Some new content to replace the old.");
writer.Write(data, 0, data.Length);
}
//
// Verify the file now exists.
//
Assert.IsTrue(new FileInfo(filePath).Exists, "Failed to create a new file.");
//
// Restore the file and verify it no longer exists.
//
f.Restore();
Assert.IsTrue((new FileInfo(filePath).Exists == false), "Restore operation failed.");
}
public void FileChangeRestoreOriginal()
{
FileChange f;
String filePath;
String origMD5;
//
// Put some original content in.
//
filePath = Path.GetTempFileName();
using (FileStream writer = new FileInfo(filePath).OpenWrite())
{
byte[] data = new System.Text.UTF8Encoding().GetBytes("This is a test message.");
writer.Write(data, 0, data.Length);
}
origMD5 = InstallTest.MD5FromPath(filePath);
f = new FileChange(new FileInfo(filePath));
//
// Update the content.
//
using (FileStream writer = new FileInfo(filePath).OpenWrite())
{
byte[] data = new System.Text.UTF8Encoding().GetBytes("Some new content to replace the old.");
writer.Write(data, 0, data.Length);
}
//
// Verify the changed data.
//
Assert.IsTrue((origMD5.Equals(InstallTest.MD5FromPath(filePath)) == false), "Failed to update the file contents.");
//
// Restore the file and verify original contents.
//
f.Restore();
Assert.IsTrue(origMD5.Equals(InstallTest.MD5FromPath(filePath)), "Restore operation failed.");
new FileInfo(filePath).Delete();
}