public void standard_returns_version_one()
{
layout = TimeGuidLayout.Standard;
var actual = invoke().ToByteArray();
Assert.Equal(0x10, actual[7] & 0xF0);
}
public void standard_returns_node_with_multicast_bit()
{
layout = TimeGuidLayout.Standard;
var actual = invoke().ToByteArray();
Assert.Equal(1, actual[10] & 0x01);
}
public void sqlServer_returns_variant_zero()
{
layout = TimeGuidLayout.SqlServer;
var actual = invoke().ToByteArray();
// first bit of byte 8 should be zero
Assert.Equal(0, actual[8] & 0x80);
}
public void sqlServer_returns_node_with_multicast_bit()
{
layout = TimeGuidLayout.SqlServer;
var guid = invoke();
var actual = guid.ToByteArray();
Assert.Equal(1, actual[0] & 0x01);
}
public void sqlServer_returns_original_variant_one()
{
layout = TimeGuidLayout.SqlServer;
var actual = invoke().ToByteArray();
Assert.NotEqual(0, actual[6] & 0x80);
Assert.Equal(0, actual[6] & 0x40);
}
public void sqlServer_returns_version_one()
{
layout = TimeGuidLayout.SqlServer;
var actual = invoke().ToByteArray();
// first nibble of byte 8 should be one
Assert.Equal(1, actual[8] >> 4);
}
public void standard_returns_variant_one()
{
layout = TimeGuidLayout.Standard;
var actual = invoke().ToByteArray();
// first bit of byte 8 should be set
Assert.NotEqual(0, actual[8] & 0x80);
// second bit of byte 8 should not be set
Assert.Equal(0, actual[8] & 0x40);
}
/// <summary>
/// Creates and returns a time-based GUID in the given layout.
/// </summary>
/// <param name="layout">Layout of the identifier.</param>
public Guid Create(TimeGuidLayout layout)
{
if (!formatters.TryGetValue(layout, out ITimeGuidFormatter formatter))
{
throw new NotImplementedException();
}
var time = DateTime.UtcNow.Ticks - Epoch;
var clockBytes = new byte[2];
var node = new byte[6];
using (var rng = RandomNumberGenerator.Create())
{
rng.GetBytes(clockBytes);
rng.GetBytes(node);
}
// set multicast bit on random nodes
node[0] |= 0x01;
var clock = BitConverter.ToInt16(clockBytes, 0);
return(formatter.Create(time, clock, node));
}
/// <summary>
/// Creates and returns a time-based GUID in the given layout.
/// </summary>
/// <param name="layout">Layout of the identifier.</param>
public static Guid Create(TimeGuidLayout layout) =>
Factories.TimeGuidFactory.Instance.Create(layout);
public void requires_valid_layout()
{
layout = default(TimeGuidLayout);
Assert.Throws <NotImplementedException>(() => invoke());
}
