public void GetVariantCodes_VariantsSet_ReturnsString()
{
IEnumerable <VariantSubtag> variantSubtags = new VariantSubtag[] { "fonipa", "etic" };
Assert.That(IetfLanguageTag.GetVariantCodes(variantSubtags), Is.EqualTo("fonipa-x-etic"));
}
public void GetVariantCodes_EmptyVariants_ReturnsEmpty()
{
IEnumerable <VariantSubtag> variantSubtags = new VariantSubtag[] {};
Assert.That(IetfLanguageTag.GetVariantCodes(variantSubtags), Is.Null);
}