private void CheckBuffer(FakeConsole console, char character, string buffer)
{
buffer = SanitizeBuffer(buffer, character);
Assert.AreEqual(console.Width * console.Height, buffer.Length, "SanitizeBuffer did sth wrong!");
Assert.That(
console.BufferEquals(buffer),
string.Format("Actual:\n{0}\nExpected:\n{1}",
MakeReadable(new string(console.Buffer), character, console.Width), MakeReadable(buffer, character, console.Width)
)
);
}