public void Constructs_with_negative_count_should_throw_exception()
{
var generator = new RandomStockStringGenerator
{
Values = new[] { "A", "B", "C", "D" },
Count = -1
};
Assert.Throws<GenerationException>(() => generator.Run().Cast<string>().ToArray());
}
public void Generate_sequence_ok()
{
var generator = new RandomStockStringGenerator
{
Values = new[] { "A", "B", "C", "D" },
Count = 8
};
var values = generator.Run().Cast<string>().ToArray();
Assert.Count(8, values);
Assert.Multiple(() =>
{
foreach (string value in values)
{
Assert.Contains<string>(new[] { "A", "B", "C", "D" }, value);
}
});
}
/// <summary>
/// Returns an enumeration of random strings from a pre-existing stock of values.
/// </summary>
/// <param name="count">The number of strings to generate.</param>
/// <param name="stock">A stock of preset values.</param>
/// <param name="seed">A seed value to initialize the random number generator.</param>
/// <returns>An enumeration of random string values.</returns>
/// <exception cref="GenerationException">Thrown if the specified parameters are inconsistent or invalid.</exception>
public static IEnumerable<string> Strings(int count, RandomStringStock stock, int seed)
{
var generator = new RandomStockStringGenerator
{
Count = count,
Values = RandomStringStockInfo.FromStock(stock).GetItems(),
Seed = seed,
};
foreach (string value in generator.Run())
yield return value;
}