public void TestProperties()
{
// invalid properties
using (var stack = new StreamStack())
{
Assert.IsFalse(stack.CanSeek);
Assert.IsFalse(stack.CanRead);
Assert.IsFalse(stack.CanWrite);
AssertException(() => { var x = stack.Position; });
AssertException(() => stack.Position = 10);
AssertException(() => { var x = stack.Length; });
AssertException(() => stack.SetLength(10));
Assert.IsNull(stack.Top);
}
// valid properties
using (var stack = new StreamStack())
{
var top = new MemoryStream();
stack.Push(top);
Assert.IsTrue(stack.CanRead);
Assert.IsTrue(stack.CanWrite);
Assert.AreEqual(stack.Top, top);
}
using (var stack = new StreamStack())
{
stack.Push(new MemoryStream(new Byte[10], false));
Assert.IsTrue(stack.CanRead);
Assert.IsFalse(stack.CanWrite);
}
}
