public void ShouldReverseRange()
{
using (var buffer = new Buffer())
{
buffer.AddUtf8("123");
buffer.ReverseRange(0, 2);
Assert.Equal(50u, buffer.GlyphInfos[0].Codepoint);
Assert.Equal(1u, buffer.GlyphInfos[0].Cluster);
Assert.Equal(49u, buffer.GlyphInfos[1].Codepoint);
Assert.Equal(0u, buffer.GlyphInfos[1].Cluster);
Assert.Equal(51u, buffer.GlyphInfos[2].Codepoint);
Assert.Equal(2u, buffer.GlyphInfos[2].Cluster);
}
}