NUnit: Test for file system

[=?Utf-8?B?THVpZ2k=?=]

Hi all,
with NUnit (C#) which is the better way to implement some tests to operate
on a file in the file system?
For instance: file exists, file read and file write.

Thanks in advance.
--
Luigi

[Nicholas Paldino [.NET/C# MVP]]

Luigi,

Why not just use the classes in the System.IO namespace to determine if
the file exists, and to read/write from/to the file?
--
- Nicholas Paldino [.NET/C# MVP]
- mv*@spam.guard. caspershouse.co m

"Luigi" <ci************ ****@inwind.itw rote in message
news:03******** *************** ***********@mic rosoft.com...

Hi all,
with NUnit (C#) which is the better way to implement some tests to operate
on a file in the file system?
For instance: file exists, file read and file write.

Thanks in advance.
--
Luigi

[Peter Morris]

Use dependency injection or the service pattern to obtain a reference to an
interface that provides these functions, and use mocks to mock them during
testing.

Pete

[sloan]

I'm confused about what you're asking.
bool b = System.IO.File. Exists(@"C:\myf ile.txt");
Assert.AreEqual (true,b);
That looks like the basic setup to me.

"Luigi" <ci************ ****@inwind.itw rote in message
news:03******** *************** ***********@mic rosoft.com...

Hi all,
with NUnit (C#) which is the better way to implement some tests to operate
on a file in the file system?
For instance: file exists, file read and file write.

Thanks in advance.
--
Luigi

[=?Utf-8?B?THVpZ2k=?=]

Yes, something similar.
Not also verify that the file exists, but also that I can read it.
A full tests for file system access and reading.

Luigi

[=?Utf-8?B?cmF1bGF2aQ==?=]

i od have something like this

public static bool IsFileWritable( string fileName)
{
//write at least one single line into file,
//used by unit test
try
{
//to clear file use
// FileInfo afileinfo = new FileInfo("list. txt");
afileinfo.Delet e();
string line = String.Empty;
StreamWriter oSWriter = new StreamWriter(fi leName);
oSWriter.WriteL ine("TEST:" +
DateTime.Today. ToString("yyMMd d"));
oSWriter.Close( );

//Chk segments in created file
StreamReader aSR = new StreamReader(fi leName);

line = aSR.ReadLine();
if (line == null) return false;
if (!line.StartsWi th("TEST:")) return false;

aSR.Close();
oSWriter.Dispos e(); //remove from memory,does not delete file
return true;
}
catch (Exception)
{
return false;
}
}
"Luigi" wrote:

Yes, something similar.
Not also verify that the file exists, but also that I can read it.
A full tests for file system access and reading.

Luigi