Small temp file helper for integration tests

I’m writing some integration tests and needed to be able to create/cleanup temp files during the test. So I’ve created a small helper for that (so that the file will be deleted even if the test fails).

[TestClass]
public class WebClientTests
{
    [TestMethod]
    public void Upload()
    {
        var subject = new EfecteWebClient(new HardCodedConfig());
        var repos = new ChangeRequestRepository(subject);
        var changeRequest = repos.Get("ACHG-00002978");

        UploadResult result;
        using (var tempFile = new TempFile("Hello world"))
        {
            var stream = new FileStream(tempFile.FullPath, FileMode.Open);
            result = subject.Upload(() => changeRequest.Title, UploadType.Set, new HttpFile("myFile", "mydocument.txt", stream));
        }

        Assert.IsFalse(result.Errors.Any());
    }
}

See? The TempFile class implements IDisposable so that the tests won’t be cluttered with the cleanup.

Implementation:

public class TempFile : IDisposable
{
    public TempFile()
    {
    }

    public TempFile(string contents)
    {
        if (contents == null) throw new ArgumentNullException("contents");
        FullPath = Path.GetTempFileName();
        File.WriteAllText(FullPath, contents);
    }

    public string FullPath { get; private set; }

    public void Dispose()
    {
        File.Delete(FullPath);
    }

    public string Read()
    {
        return File.ReadAllText(FullPath);
    }

    public void Write(string text)
    {
        if (text == null) throw new ArgumentNullException("text");
        File.WriteAllText(FullPath, text);
    }
}