public void Basic()
{
KeywordBuilder builder = new KeywordBuilder();
builder.AddKeyword("a", "b");
builder.Build().ShouldDeepEqual(new Keyword(new[] { "a", "b" }));
builder.AddKeyword("c");
builder.Build().ShouldDeepEqual(new Keyword(new[] { "a", "b", "c" }));
builder.RemoveKeyword("c");
builder.Build().ShouldDeepEqual(new Keyword(new[] { "a", "b" }));
Assert.ThrowsException <Exception>(() => builder.AddKeyword($"a{Keyword.KeywordSeperator}b"));
}
