public async Task ExclusiveCharacterAlphabet_throws_when_runs_out()
{
var alphabet = new ExclusiveStringAlphabet("abcde");
var random = new RandomRandomizer();
await Assert.ThrowsAsync <ArgumentOutOfRangeException>(
async() =>
{
for (int i = 0; i < 10; i++)
{
var index = await random.NextAsync(alphabet.Count);
_ = alphabet.Get(index);
}
}
);
}
public async Task ExclusiveCharacterAlphabet_works()
{
var alphabet = new ExclusiveStringAlphabet("abcde");
var sb = new StringBuilder();
var random = new RandomRandomizer();
for (int i = 0; i < alphabet.Characters.Count; i++)
{
var index = await random.NextAsync(alphabet.Count);
var character = alphabet.Get(index);
sb.Append(character);
}
var result = sb.ToString();
output.WriteLine(result);
Assert.Equal(5, result.Length);
}