public void ReadThrowsIfWriteOnly()
{
var mem = new FixedMemory(10, canRead: false, canWrite: true);
var buf = new byte[5];
Assert.Throws <InvalidOperationException>(() => mem.Read(0, buf));
}
public void ReadThrowsIfWouldGoOutOfBounds()
{
var mem = new FixedMemory(10);
var buf = new byte[20];
Assert.Throws <IndexOutOfRangeException>(() => mem.Read(0, buf));
}
public void ReadThrowsIfOffsetIsNegative()
{
var mem = new FixedMemory(10);
var buf = new byte[5];
var ex = Assert.Throws <ArgumentOutOfRangeException>(() => mem.Read(-1, buf));
Assert.Equal("offset", ex.ParamName);
}
public void InitializesWithAllZeros()
{
var mem = new FixedMemory(10);
var buf = new byte[10];
mem.Read(0, buf);
Assert.True(buf.All(b => b == 0));
}
public void CanBeInitializedWithData()
{
var data = new byte[] { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 };
var mem = new FixedMemory(data);
var buf = new byte[10];
mem.Read(0, buf);
Assert.Equal(data, buf);
}