public void InvalidRandomness()
{
var d = DateTimeOffset.Now;
// short length
Assert.Throws <ArgumentOutOfRangeException>(() => CliUtil.CreateUlid(d, "A"));
// invalid character
Assert.Throws <InvalidOperationException>(() => CliUtil.CreateUlid(d, new string('+', 16)));
}
public void SameTime()
{
var d = new DateTimeOffset(new DateTime(1970, 1, 1, 0, 0, 0, DateTimeKind.Utc));
var first = CliUtil.CreateUlid(d, null);
var second = CliUtil.CreateUlid(d, null);
first.Time.Should().Be(d);
second.Time.Should().Be(d);
first.Random.Should().NotBeEquivalentTo(second.Random);
}
public void SameRandomness(char c)
{
var r1 = new string(c, 16).ToLower();
var r2 = new string(c, 16).ToUpper();
var d = DateTimeOffset.Parse("1970-1-1T00:00:00Z");
var first = CliUtil.CreateUlid(DateTimeOffset.Now, r1);
var second = CliUtil.CreateUlid(DateTimeOffset.Now, r2);
first.Random.Should().BeEquivalentTo(second.Random);
}
public async Task Default()
{
var first = CliUtil.CreateUlid(DateTimeOffset.Now, null);
await Task.Delay(1).ConfigureAwait(false);
// empty string is treated same as null
var second = CliUtil.CreateUlid(DateTimeOffset.Now, "");
first.Time.Should().NotBe(second.Time);
first.Random.Should().NotBeEquivalentTo(second.Random);
}