public void ProcessingStack_ReadAndWriteState_Test()
{
string val = null;
StateInfo Step;
Assert.AreEqual(StateInfo.PUSHED, StackUnderTest.StackTop_Step);
Assert.AreEqual("hello", StackUnderTest.StackTop_Item);
StackUnderTest.StackTop_Step = StateInfo.PROCESSED;
Assert.AreEqual(StateInfo.PROCESSED, StackUnderTest.StackTop_Step);
Step = StackUnderTest.Pop(ref val);
Assert.AreEqual(StateInfo.PROCESSED, Step);
Assert.AreEqual("hello", val);
Assert.AreEqual(StateInfo.PUSHED, StackUnderTest.StackTop_Step);
StackUnderTest.StackTop_Step = StateInfo.READY_TO_POP;
Assert.AreEqual(StateInfo.READY_TO_POP, StackUnderTest.StackTop_Step);
StackUnderTest.Pop();
Assert.AreEqual(StateInfo.PUSHED, StackUnderTest.StackTop_Step);
Assert.AreEqual("good bye", StackUnderTest.StackTop_Item);
StackUnderTest.Pop();
Assert.AreEqual(StateInfo.ERROR, StackUnderTest.StackTop_Step);
}
private void BackToolStripMenuItemClick(object sender, EventArgs e)
{
if (_stack.Count < 2)
{
return;
}
var peek = _stack.Pop();
pictureBox.Image = new Bitmap(peek.Bitmap);
DrawPoint();
pictureBox.Refresh();
}
