public void Allow_A_Theme_To_Be_Added_For_A_Parser()
{
// arrange
var repo = new ThemeRepository()
{
Themes = new Dictionary <string, Theme>()
{
["a"] = Theme.Cool
}
};
// act
repo.SetTheme("a", Theme.Warm);
// assert
repo.Get("a").Should().BeSameAs(Theme.Warm);
}