public void OpenWrite_OnFileWithContents_ClearsContentsFirst()
{
// arrange
using(var writer = File.CreateText(@"test.txt"))
{
writer.Write("0123456789");
}
var file = new SubtextFile(new FileInfo("test.txt"));
// act
using(var writer = new StreamWriter(file.OpenWrite()))
{
writer.Write("abcdef");
}
// assert
using(var reader = new StreamReader(File.OpenRead("test.txt")))
{
string text = reader.ReadToEnd();
Assert.AreEqual("abcdef", text);
}
}
