public void UpdateZip_UpdateItem()
{
string filename = null;
int entriesAdded = 0;
string repeatedLine = null;
int j;
// select the name of the zip file
string zipFileToCreate = Path.Combine(TopLevelDir, "UpdateZip_UpdateItem.zip");
// create the subdirectory
string subdir = Path.Combine(TopLevelDir, "A");
Directory.CreateDirectory(subdir);
// create a bunch of files
int numFilesToCreate = _rnd.Next(10) + 8;
for (j = 0; j < numFilesToCreate; j++)
{
filename = Path.Combine(subdir, String.Format("file{0:D3}.txt", j));
repeatedLine = String.Format("Content for Original file {0}",
Path.GetFileName(filename));
TestUtilities.CreateAndFillFileText(filename, repeatedLine, _rnd.Next(34000) + 5000);
entriesAdded++;
}
// Create the zip file
Directory.SetCurrentDirectory(TopLevelDir);
using (ZipFile zip1 = new ZipFile())
{
String[] filenames = Directory.GetFiles("A");
foreach (String f in filenames)
zip1.AddFile(f, "");
zip1.Comment = "UpdateTests::UpdateZip_UpdateItem(): This archive will be updated.";
zip1.Save(zipFileToCreate);
}
// Verify the files are in the zip
Assert.AreEqual<int>(TestUtilities.CountEntries(zipFileToCreate), entriesAdded,
"The Zip file has the wrong number of entries.");
// create another subdirectory
subdir = Path.Combine(TopLevelDir, "B");
Directory.CreateDirectory(subdir);
// create a bunch more files
int newFileCount = numFilesToCreate + _rnd.Next(3) + 3;
for (j = 0; j < newFileCount; j++)
{
filename = Path.Combine(subdir, String.Format("file{0:D3}.txt", j));
repeatedLine = String.Format("Content for the updated file {0} {1}",
Path.GetFileName(filename),
System.DateTime.Now.ToString("yyyy-MM-dd"));
TestUtilities.CreateAndFillFileText(filename, repeatedLine, _rnd.Next(1000) + 2000);
entriesAdded++;
}
// Update those files in the zip file
Directory.SetCurrentDirectory(TopLevelDir);
using (ZipFile zip1 = new ZipFile())
{
String[] filenames = Directory.GetFiles("B");
foreach (String f in filenames)
zip1.UpdateItem(f, "");
zip1.Comment = "UpdateTests::UpdateZip_UpdateItem(): This archive has been updated.";
zip1.Save(zipFileToCreate);
}
// Verify the number of files in the zip
Assert.AreEqual<int>(TestUtilities.CountEntries(zipFileToCreate), newFileCount,
"The Zip file has the wrong number of entries.");
// now extract the files and verify their contents
using (ZipFile zip3 = ZipFile.Read(zipFileToCreate))
{
foreach (string s in zip3.EntryFileNames)
{
repeatedLine = String.Format("Content for the updated file {0} {1}",
s,
System.DateTime.Now.ToString("yyyy-MM-dd"));
zip3[s].Extract("extract");
// verify the content of the updated file.
var sr = new StreamReader(Path.Combine("extract", s));
string sLine = sr.ReadLine();
sr.Close();
Assert.AreEqual<string>(repeatedLine, sLine,
String.Format("The content of the Updated file ({0}) in the zip archive is incorrect.", s));
}
}
}