void AssertPreviewText(string path, TextFormat format, string expected)
{
var body = CreateTextPart(path, format);
string actual;
actual = TextPreviewer.GetPreviewText(body);
Assert.AreEqual(expected, actual);
}
public void TestGetPreviewTextUnknownCharset()
{
var encoding = Encoding.GetEncoding("big5");
var builder = new StringBuilder();
using (var memory = new MemoryStream()) {
var bytes = encoding.GetBytes("日月星辰");
string preview;
memory.Write(bytes, 0, bytes.Length);
memory.Position = 0;
var body = new TextPart("plain")
{
Content = new MimeContent(memory, ContentEncoding.Default)
};
body.ContentType.Charset = "x-unknown";
preview = TextPreviewer.GetPreviewText(body);
Assert.AreEqual("¤é¤ë¬P¨°", preview, "chinese text x-unknown -> UTF-8 -> iso-8859-1");
}
using (var memory = new MemoryStream()) {
var bytes = Encoding.UTF8.GetBytes("日月星辰");
string preview;
memory.Write(bytes, 0, bytes.Length);
memory.Position = 0;
var body = new TextPart("plain")
{
Content = new MimeContent(memory, ContentEncoding.Default)
};
body.ContentType.Charset = "x-unknown";
preview = TextPreviewer.GetPreviewText(body);
Assert.AreEqual("日月星辰", preview, "x-unknown -> UTF-8");
}
using (var memory = new MemoryStream()) {
var bytes = Encoding.GetEncoding(28591).GetBytes("L'encyclopédie libre");
string preview;
memory.Write(bytes, 0, bytes.Length);
memory.Position = 0;
var body = new TextPart("plain")
{
Content = new MimeContent(memory, ContentEncoding.Default)
};
body.ContentType.Charset = "x-unknown";
preview = TextPreviewer.GetPreviewText(body);
Assert.AreEqual("L'encyclopédie libre", preview, "french text x-unknown -> UTF-8 -> iso-8859-1");
}
}
public void TestArgumentExceptions()
{
Assert.Throws <ArgumentNullException> (() => TextPreviewer.GetPreviewText((TextPart)null));
}