public void OpenFileReturnsWriteableStreamPositionedAtFileStart()
{
// Arrange
PhysicalFileSystem fs = new PhysicalFileSystem(testRoot);
WriteTestFile("testOpenWrite.txt", "Foo Bar Baz");
// Act
using (Stream strm = fs.OpenFile("testOpenWrite.txt"))
{
using (StreamWriter writer = new StreamWriter(strm))
{
writer.Write("Quz");
}
}
// Assert
Assert.Equal("Quz Bar Baz", File.ReadAllText(ResolveTestFile("testOpenWrite.txt")));
}
public void OpenFileLocksFileForAllAccess()
{
// Arrange
PhysicalFileSystem fs = new PhysicalFileSystem(testRoot);
WriteTestFile("testLock.txt", "Foo Bar Baz");
// Act
using (Stream strm = fs.OpenFile("testLock.txt"))
{
// Assert
IOException ex = Assert.Throws<IOException>(() => fs.OpenFile("testLock.txt"));
Assert.Equal(String.Format("The process cannot access the file '{0}' because it is being used by another process.", ResolveTestFile("testLock.txt")), ex.Message);
}
}
public void OpenFileReturnsStreamContainingAllFileData()
{
// Arrange
PhysicalFileSystem fs = new PhysicalFileSystem(testRoot);
WriteTestFile("testOpenRead.txt", "Foo Bar Baz");
// Act
Stream strm = fs.OpenFile("testOpenRead.txt");
// Assert
Assert.Equal("Foo Bar Baz", GetContent(strm));
}
public void OpenFileCreatesParentDirectoryTreeIfNecessary()
{
// Arrange
PhysicalFileSystem fs = new PhysicalFileSystem(testRoot);
// Act
using (Stream strm = fs.OpenFile(@"testParent\folder\testOpenWrite.txt")) { }
// Assert
Assert.True(Directory.Exists(ResolveTestFile(@"testParent\folder")));
}