public void TestArgumentExceptions()
{
var contentType = new ContentType("application", "octet-stream");
var attachments = new AttachmentCollection();
var items = new MimeEntity[10];
var data = new byte[1024];
using (var stream = new MemoryStream()) {
Assert.Throws <ArgumentException> (() => attachments.Add(string.Empty));
Assert.Throws <ArgumentNullException> (() => attachments.Add((string)null));
Assert.Throws <ArgumentNullException> (() => attachments.Add((MimeEntity)null));
Assert.Throws <ArgumentException> (() => attachments.Add(string.Empty, data));
Assert.Throws <ArgumentNullException> (() => attachments.Add((string)null, data));
Assert.Throws <ArgumentException> (() => attachments.Add(string.Empty, stream));
Assert.Throws <ArgumentNullException> (() => attachments.Add((string)null, stream));
Assert.Throws <ArgumentException> (() => attachments.Add(string.Empty, contentType));
Assert.Throws <ArgumentNullException> (() => attachments.Add((string)null, contentType));
Assert.Throws <ArgumentException> (() => attachments.Add(string.Empty, data, contentType));
Assert.Throws <ArgumentNullException> (() => attachments.Add((string)null, data, contentType));
Assert.Throws <ArgumentException> (() => attachments.Add(string.Empty, stream, contentType));
Assert.Throws <ArgumentNullException> (() => attachments.Add((string)null, stream, contentType));
Assert.Throws <ArgumentNullException> (() => attachments.Add("file.dat", (byte[])null));
Assert.Throws <ArgumentNullException> (() => attachments.Add("file.dat", (Stream)null));
Assert.Throws <ArgumentNullException> (() => attachments.Add("file.dat", (byte[])null, contentType));
Assert.Throws <ArgumentNullException> (() => attachments.Add("file.dat", (Stream)null, contentType));
Assert.Throws <ArgumentNullException> (() => attachments.Add("file.dat", (ContentType)null));
Assert.Throws <ArgumentNullException> (() => attachments.Add("file.dat", data, null));
Assert.Throws <ArgumentNullException> (() => attachments.Add("file.dat", stream, null));
Assert.Throws <ArgumentNullException> (() => attachments.Contains(null));
Assert.Throws <ArgumentNullException> (() => attachments.CopyTo(null, 0));
Assert.Throws <ArgumentOutOfRangeException> (() => attachments.CopyTo(items, -1));
Assert.Throws <ArgumentNullException> (() => attachments.IndexOf(null));
Assert.Throws <ArgumentNullException> (() => attachments.Remove(null));
Assert.Throws <ArgumentOutOfRangeException> (() => attachments.RemoveAt(0));
attachments.Add(new TextPart("plain"));
Assert.Throws <ArgumentOutOfRangeException> (() => { var x = attachments[10]; });
Assert.Throws <ArgumentOutOfRangeException> (() => attachments[10] = new TextPart("plain"));
Assert.Throws <ArgumentNullException> (() => attachments[0] = null);
Assert.Throws <ArgumentOutOfRangeException> (() => attachments.Insert(-1, new TextPart("plain")));
Assert.Throws <ArgumentNullException> (() => attachments.Insert(0, null));
}
}
/// <summary>
/// Handles the remove attachment button's Click event.
/// </summary>
/// <param name="sender">The button object.</param>
/// <param name="e">The event arguments.</param>
private void btnRemoveAttachment_Click(object sender, EventArgs e)
{
bool b = _changed;
// Removes an attachment from the collection.
_attachments.RemoveAt(cbxAttachment.SelectedIndex);
// and the combo box.
if (_attachments.Count > 0)
{
// and the combo box.
cbxAttachment.Items.RemoveAt(cbxAttachment.SelectedIndex);
}
else
{
cbxAttachment.SelectedItem = null;
cbxAttachment.Items.Clear();
}
if (cbxAttachment.Items.Count == 0)
{
// Disables the "Remove" button.
btnRemoveAttachment.Enabled = false;
_attachments = null;
saveAttachmentsButton.Enabled = false;
}
else if (cbxAttachment.SelectedIndex == -1)
{
cbxAttachment.SelectedIndex = cbxAttachment.Items.Count - 1;
}
_changed = true;
saveButton.Enabled = true;
if (b == false)
{
SetTitle();
}
}
