public void CacheThreeSingleLines_ShouldCacheThreeLines()
{
collection.Add(VisualTextLine.Create("asdf", 0));
collection.Add(VisualTextLine.Create("{", 1));
collection.Add(VisualTextLine.Create("", 2));
collection.Add(VisualTextLine.Create("}", 3));
var cachedResult = collection.ConvertToCachedLines(3, 1);
Assert.AreEqual(cachedResult.Count, 3);
Assert.AreEqual(cachedResult[0].RenderedText, "{");
Assert.AreEqual(cachedResult[1].RenderedText, "");
Assert.AreEqual(cachedResult[2].RenderedText, "}");
}