public void WriteThrowsIfWouldGoOutOfBounds()
{
var mem = new FixedMemory(10);
var buf = new byte[20];
Assert.Throws <IndexOutOfRangeException>(() => mem.Write(0, buf));
}
public void WriteThrowsIfOffsetIsNegative()
{
var mem = new FixedMemory(10);
var buf = new byte[5];
var ex = Assert.Throws <ArgumentOutOfRangeException>(() => mem.Write(-1, buf));
Assert.Equal("offset", ex.ParamName);
}
public void WriteThrowsIfReadOnly()
{
var mem = new FixedMemory(10, canRead: true, canWrite: false);
var buf = new byte[5] {
1, 2, 3, 4, 5
};
Assert.Throws <InvalidOperationException>(() => mem.Write(0, buf));
}
public void WriteUpdatesData()
{
var mem = new FixedMemory(10);
var buf = new byte[5] {
1, 2, 3, 4, 5
};
mem.Write(2, buf.AsSpan());
Assert.Equal(new byte[] { 0, 0, 1, 2, 3, 4, 5, 0, 0, 0 }, mem.Data.ToArray());
}