public void CannotBurnRomTwice()
{
_rom.Erase();
_rom.Burn = true;
var end = (ushort)(ROM_START + ROM_SIZE - 1);
for (var ix = ROM_START; ix <= end; ix++)
{
mem.Write(ix, 0x55);
}
_rom.Burn = false; // End burning
Assert.IsTrue(IsMemoryFilledWith(mem, ROM_START, ROM_SIZE, 0x55), "ROM unexpected content");
for (var ix = ROM_START; ix <= end; ix++)
{
mem.Write(ix, 0xAA);
}
// Content should not have changed
Assert.IsTrue(IsMemoryFilledWith(mem, ROM_START, ROM_SIZE, 0x55), "ROM unexpected content");
try
{
_rom.Burn = true; // Should fail
}
catch (InvalidOperationException)
{
Assert.Pass();
}
Assert.Fail("Exception wasn't thrown");
}