Reading test data for NUNIT from a file


T

tchaiket

Hey all,

I'm using NUNIT to test our classes. However, I don't want to hard
code test data into the NUNIT classes. For example, to test adding a
new Client, I don't want to hard code the Client Name, phone number,
email, etc. I want to the NUNIT to read this data from a file. This
way I can change the data in a file easily and test various types of
test data.

I think this can be done using the CONFIG file that NUNIT reads. Is
there any other way? Does NUNIT have other method of doing this?
Thanks.
TC
 
Ad

Advertisements

F

Francois Bonin [C# MVP]

What about using the standard app.config file to store that information?
 
J

Jon Skeet [C# MVP]

I'm using NUNIT to test our classes. However, I don't want to hard
code test data into the NUNIT classes. For example, to test adding a
new Client, I don't want to hard code the Client Name, phone number,
email, etc. I want to the NUNIT to read this data from a file. This
way I can change the data in a file easily and test various types of
test data.

I think this can be done using the CONFIG file that NUNIT reads. Is
there any other way? Does NUNIT have other method of doing this?

In both Java and .NET, I prefer to bundle test data as resource files -
in .NET, this means they are compiled into the test assembly. You can
then use Assembly.GetManifestResourceSource to load the file.
 
T

tchaiket

Jon,
Do you have a NUNIT code example of how you would read the config file
or the resource file?
Thanks.
 
J

Jon Skeet [C# MVP]

Do you have a NUNIT code example of how you would read the config file
or the resource file?

I'm afraid I don't have time to come up with an example at the moment -
but have you tried it? Just call Assembly.GetManifestResourceStream and
use the returned stream as you would any other stream to load data
from.

If you're having trouble, you could post a test which you'd expect to
work but doesn't.
 
Ad

Advertisements

J

Joerg Jooss

Thus wrote Jon Skeet [C# MVP],
I'm afraid I don't have time to come up with an example at the moment
- but have you tried it? Just call Assembly.GetManifestResourceStream
and use the returned stream as you would any other stream to load data
from.

May I help out :)

I use this helper class to create and remove temporary files for unit tests.
One can use SetUp() to create a temporary file and TearDown() to remove it.

public static class TestUtility {
public static FileInfo CreateTestFile(string resourceName) {
FileInfo file = new FileInfo(Path.GetTempFileName());

Assembly assembly = Assembly.GetCallingAssembly();
Stream istream = assembly.GetManifestResourceStream(resourceName);
using(FileStream ostream = file.Open(FileMode.Create, FileAccess.Write))
{
byte[] buffer = new byte[0x2000];
int bytes;
while((bytes = istream.Read(buffer, 0, buffer.Length)) > 0) {
ostream.Write(buffer, 0, bytes);
}
}

Console.WriteLine(">> Created test file {0}", file.FullName);
return file;
}

public static void DeleteTestFile(FileInfo file) {
if(file != null) {
string fullName = file.FullName;
try {
file.Delete();
Console.WriteLine(">> Deleted test file {0}", fullName);
}
catch(IOException ex) {
Console.WriteLine(">> Cannot delete \"{0}\": {1}", fullName,
ex);
}
}
}
}

Cheers,
 
Ad

Advertisements

Joined
Jun 23, 2011
Messages
1
Reaction score
0
Hey all,

I'm using NUNIT to test our classes. However, I don't want to hard
code test data into the NUNIT classes. For example, to test adding a
new Client, I don't want to hard code the Client Name, phone number,
email, etc. I want to the NUNIT to read this data from a file. This
way I can change the data in a file easily and test various types of
test data.

I think this can be done using the CONFIG file that NUNIT reads. Is
there any other way? Does NUNIT have other method of doing this?
Thanks.
TC

Can u tell me that How do u read test data from any file? Pls tell what is exact setting need to change in config file or some other code is there.
 

Ask a Question

Want to reply to this thread or ask your own question?

You'll need to choose a username for the site, which only take a couple of moments. After that, you can post your question and our members will help you out.

Ask a Question

Similar Threads

Test data for NUnit tests in .Net and C# 3
NUnit: Test for file system 5
How to test a method 22
NUnit Test cases execution 3
testing question 3
Unit testing 2
nunit and config files. 1
unit test best practice 4

Top