public void ShouldReturnEmptyEnumerableWhenNoFilesExistInDirectory()
{
var directoryInfo = new DirectoryInfo(_temporaryDirectory);
const string searchPattern = "*.xml";
var actual = FileSystemAbstraction.EnumerateFiles(directoryInfo, searchPattern);
Assert.IsFalse(actual.GetEnumerator().MoveNext());
}
public void ShouldReturnEmptyEnumerableWhenSearchPatternIsEmpty()
{
CreateFile(Path.Combine(_temporaryDirectory, "test.txt"));
var directoryInfo = new DirectoryInfo(_temporaryDirectory);
const string searchPattern = "";
var actual = FileSystemAbstraction.EnumerateFiles(directoryInfo, searchPattern);
Assert.IsFalse(actual.GetEnumerator().MoveNext());
}
public void ShouldReturnAllFilesInDirectoryWhenSearchPatternIsAsterisk()
{
CreateFile(Path.Combine(_temporaryDirectory, "test.txt"));
CreateFile(Path.Combine(_temporaryDirectory, "test.xml"));
var directoryInfo = new DirectoryInfo(_temporaryDirectory);
const string searchPattern = "*";
var actual = FileSystemAbstraction.EnumerateFiles(directoryInfo, searchPattern).ToList();
Assert.AreEqual(2, actual.Count);
Assert.IsTrue(actual.Exists(p => p.Name == "test.txt"));
Assert.IsTrue(actual.Exists(p => p.Name == "test.xml"));
}
public void ShouldThrowDirectoryNotFoundExceptionWhenDirectoryDoesNotExist()
{
var directoryInfo = new DirectoryInfo(_temporaryDirectory);
const string searchPattern = "*.xml";
Directory.Delete(_temporaryDirectory, true);
try
{
FileSystemAbstraction.EnumerateFiles(directoryInfo, searchPattern);
Assert.Fail();
}
catch (DirectoryNotFoundException)
{
}
}
public void ShouldThrowArgumentNullExceptionWhenSearchPatternIsNull()
{
var directoryInfo = new DirectoryInfo(_temporaryDirectory);
const string searchPattern = null;
try
{
FileSystemAbstraction.EnumerateFiles(directoryInfo, searchPattern);
Assert.Fail();
}
catch (ArgumentNullException ex)
{
Assert.IsNull(ex.InnerException);
Assert.AreEqual("searchPattern", ex.ParamName);
}
}
public void ShouldThrowArgumentNullExceptionWhenDirectoryInfoIsNull()
{
const DirectoryInfo directoryInfo = null;
const string searchPattern = "*.xml";
try
{
FileSystemAbstraction.EnumerateFiles(directoryInfo, searchPattern);
Assert.Fail();
}
catch (ArgumentNullException ex)
{
Assert.IsNull(ex.InnerException);
Assert.AreEqual("directoryInfo", ex.ParamName);
}
}
public void ShouldReturnOnlyReturnFilesFromTopLevelDirectory()
{
CreateFile(Path.Combine(_temporaryDirectory, "test.txt"));
CreateFile(Path.Combine(_temporaryDirectory, "test.xml"));
Directory.CreateDirectory(Path.Combine(_temporaryDirectory, "sub"));
CreateFile(Path.Combine(_temporaryDirectory, "sub", "test.csv"));
var directoryInfo = new DirectoryInfo(_temporaryDirectory);
const string searchPattern = "*";
var actual = FileSystemAbstraction.EnumerateFiles(directoryInfo, searchPattern).ToList();
Assert.AreEqual(2, actual.Count);
Assert.IsTrue(actual.Exists(p => p.Name == "test.txt"));
Assert.IsTrue(actual.Exists(p => p.Name == "test.xml"));
}
