public void Next()
{
var cursor = new PathCursor(KeyBytes.FromHex("cfed4460"), false);
Assert.Equal(0, cursor.NibbleOffset);
Assert.Equal(8, cursor.RemainingNibbleLength);
Assert.Equal((byte)0xc, cursor.NextNibble);
AssertBytesEqual(FromHex("0c0f0e0d04040600"), cursor.GetRemainingNibbles());
Assert.Throws <ArgumentOutOfRangeException>(() => { cursor = cursor.Next(-1); });
Assert.Equal(0, cursor.NibbleOffset);
Assert.Equal(8, cursor.RemainingNibbleLength);
Assert.Throws <ArgumentOutOfRangeException>(() => { cursor = cursor.Next(9); });
Assert.Equal(0, cursor.NibbleOffset);
Assert.Equal(8, cursor.RemainingNibbleLength);
var next = cursor.Next(1);
Assert.Equal(0, cursor.NibbleOffset);
Assert.Equal(8, cursor.RemainingNibbleLength);
Assert.Equal((byte)0xc, cursor.NextNibble);
AssertBytesEqual(FromHex("0c0f0e0d04040600"), cursor.GetRemainingNibbles());
Assert.Equal(1, next.NibbleOffset);
Assert.Equal((byte)0xf, next.NextNibble);
Assert.Equal(7, next.RemainingNibbleLength);
AssertBytesEqual(FromHex("0f0e0d04040600"), next.GetRemainingNibbles());
Assert.Throws <ArgumentOutOfRangeException>(() => { next = next.Next(-1); });
Assert.Equal(1, next.NibbleOffset);
Assert.Equal(7, next.RemainingNibbleLength);
Assert.Throws <ArgumentOutOfRangeException>(() => { next = next.Next(8); });
Assert.Equal(1, next.NibbleOffset);
Assert.Equal(7, next.RemainingNibbleLength);
var next2 = next.Next(5);
Assert.Equal(0, cursor.NibbleOffset);
Assert.Equal(8, cursor.RemainingNibbleLength);
Assert.Equal((byte)0xc, cursor.NextNibble);
AssertBytesEqual(FromHex("0c0f0e0d04040600"), cursor.GetRemainingNibbles());
Assert.Equal(1, next.NibbleOffset);
Assert.Equal(7, next.RemainingNibbleLength);
Assert.Equal((byte)0xf, next.NextNibble);
AssertBytesEqual(FromHex("0f0e0d04040600"), next.GetRemainingNibbles());
Assert.Equal(6, next2.NibbleOffset);
Assert.Equal(2, next2.RemainingNibbleLength);
Assert.Equal((byte)0x6, next2.NextNibble);
AssertBytesEqual(FromHex("0600"), next2.GetRemainingNibbles());
}
public void RemainingNibblesStartWith()
{
var cursor = new PathCursor(KeyBytes.FromHex("cfed4460"), false);
Assert.True(cursor.RemainingNibblesStartWith(FromHex("0c0f0e0d04")));
Assert.False(cursor.RemainingNibblesStartWith(FromHex("0c0f0e0d040406000a")));
Assert.False(cursor.RemainingNibblesStartWith(FromHex("0c0f0e0d0f0f0f")));
PathCursor next = cursor.Next(3);
Assert.True(next.RemainingNibblesStartWith(FromHex("0d0404")));
Assert.False(next.RemainingNibblesStartWith(FromHex("0d040406000a0b0c0d")));
Assert.False(next.RemainingNibblesStartWith(FromHex("0d040a0b0c")));
}
public void CountCommonStartingNibbles()
{
var cursor = new PathCursor(KeyBytes.FromHex("cfed4460"), false);
Assert.Equal(
0,
cursor.CountCommonStartingNibbles(ImmutableArray <byte> .Empty)
);
Assert.Equal(
0,
cursor.CountCommonStartingNibbles(FromHex("0a0b0c0d"))
);
Assert.Equal(
3,
cursor.CountCommonStartingNibbles(FromHex("0c0f0e0f0f0f0f"))
);
Assert.Equal(
8,
cursor.CountCommonStartingNibbles(FromHex("0c0f0e0d040406000a0b0c0d"))
);
PathCursor next = cursor.Next(3);
Assert.Equal(
0,
next.CountCommonStartingNibbles(ImmutableArray <byte> .Empty)
);
Assert.Equal(
0,
next.CountCommonStartingNibbles(FromHex("0c0f0e0f0f0f0f"))
);
Assert.Equal(
3,
next.CountCommonStartingNibbles(FromHex("0d04040a0b0c"))
);
Assert.Equal(
5,
next.CountCommonStartingNibbles(FromHex("0d040406000a0b0c0d"))
);
}