public void SetImmutableIdempotent()
{
var headerAccessor = new NativeMessageHeaderAccessor();
headerAccessor.AddNativeHeader("foo", "bar");
headerAccessor.SetImmutable();
headerAccessor.SetImmutable();
}
public void AddNativeHeaderImmutable()
{
var headerAccessor = new NativeMessageHeaderAccessor();
headerAccessor.AddNativeHeader("foo", "bar");
headerAccessor.SetImmutable();
var ex = Assert.Throws <InvalidOperationException>(() => headerAccessor.AddNativeHeader("foo", "baz"));
Assert.Contains("Already immutable", ex.Message);
}