2008 Advent Calendar December 13th




1: public class Advent13 : IDisposable
2: {
3: private IFileUtil m_file;
4:  
5: private void SetUpReadable(string content)
6: {
7: m_file = new FileUtil(“SomeFile.txt”);
8: m_file.Create(content);
9: }
10:  
11: private void SetUpUnreadable(string content)
12: {
13: SetUpReadable(content);
14: m_file.Readable = false;
15: }
16:  
17: public void Dispose()
18: {
19: m_file.Delete();
20: }
21:  
22: [Fact]
23: public void TestReadReadableFile()
24: {
25: SetUpReadable(“CONTENT”);
26: string content = m_file.Read();
27: Assert.Equal<string>(“CONTENT”, content);
28: }
29:  
30: [Fact]
31: public void TestReadUnreadableFile()
32: {
33: SetUpUnreadable(“SHOULD NOT BE ABLE TO READ THIS”);
34: Assert.Throws<AccessViolationException>(() => { m_file.Read(); });
35: }
36: }

So far we’ve used the unit test framework clean up mechanism to remove the test file after each test. I don’t see anything wrong with that but another way to do it would be to introduce a new class that does this for us. Tomorrow I’ll make use of this new class:

    public class FileUtilWithDelete : FileUtil, IDisposable
{
public FileUtilWithDelete(string path)
: base(path)
{

}

public void Dispose()
{
Delete();
}
}

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