public void CopyFileToExistingFileThrowsIoException()
{
// Arrange
var fs = new MockFileSystem();
const string oldFilePath = "c:\\old\\file1.txt";
const long oldSize = 100;
const string newFilePath = "c:\\new\\file2.txt";
const long newSize = 300;
fs.AddFile(oldFilePath, oldSize);
fs.AddFile(newFilePath, newSize);
// Act
fs.CopyFile(oldFilePath, newFilePath);
// Assert
Assert.Fail();
}
public void CopyFileLeavesOldFile()
{
// Arrange
var fs = new MockFileSystem();
const string oldFilePath = "c:\\old\\file1.txt";
const long oldSize = 100;
const string newFilePath = "c:\\new\\file2.txt";
fs.AddFile(oldFilePath, oldSize);
fs.CreateDirectory("c:\\new");
// Act
fs.CopyFile(oldFilePath, newFilePath);
// Assert
Assert.IsTrue(fs.FileExists(oldFilePath));
Assert.AreEqual(oldSize, fs.GetFileLength(oldFilePath));
}
public void GetFileSizeReturnsCorrectValue()
{
// Arrange
var fs = new MockFileSystem();
const int size = 352;
const string file = "c:\\testFile.txt";
fs.AddFile(file, size);
// Act
long value = fs.GetFileLength(file);
// Assert
Assert.AreEqual(size, value);
}
public void FileDelete_RemovesFile()
{
// Arrange
var fs = new MockFileSystem();
const string fileName = "c:\\test\\file1.txt";
fs.AddFile(fileName, 255);
// Act
fs.DeleteFile(fileName);
// Assert
Assert.IsFalse(fs.FileExists(fileName));
}
public void DeleteDirectory_RemoveNonEmptyDirectoryThrowsIoException()
{
// Arrange
var fs = new MockFileSystem();
string dirName = "c:\\test";
fs.CreateDirectory(dirName);
fs.AddFile(dirName + "\\file1.txt", 100);
// Act
fs.DeleteDirectory(dirName);
// Assert
Assert.Fail();
}
public void CreateNestedFileFromCurrentDirectory()
{
// Arrange
var fs = new MockFileSystem();
// Act
fs.AddFile("test\\test2\\testFile.txt", 352);
// Assert
Assert.IsTrue(fs.FileExists("c:\\test\\test2\\testFile.txt"));
}
public void CreateFileFromAbsolute()
{
// Arrange
var fs = new MockFileSystem();
// Act
fs.AddFile("c:\\testFile.txt", 352);
// Assert
Assert.IsTrue(fs.FileExists("c:\\testFile.txt"));
}
public void CopyFile_ToFileIsNullThrowsArgumentNullException()
{
// Arrange
var fs = new MockFileSystem();
fs.CreateDirectory("c:\\new");
const string oldFilePath = "c:\\old\\file1.txt";
const long oldSize = 100;
fs.AddFile(oldFilePath, oldSize);
// Act
fs.CopyFile(oldFilePath, null);
// Assert
Assert.Fail();
}