public void CannotStep_WhenDone()
{
var env = new RandomWalkEnvironment(5, 4);
env.DebugStep(1);
// act & assert
Assert.Throws <InvalidOperationException>(() => env.DebugStep(1));
Assert.Throws <InvalidOperationException>(() => env.DebugStep(-1));
}
public void WhenStartingAtLeftmostPosition_StepLeft_Loses()
{
var env = new RandomWalkEnvironment(5, 0);
var(_, reward, isDone) = env.DebugStep(-1);
Assert.AreEqual(0, reward);
Assert.True(isDone);
}
public void WhenStartingAtRightmostPosition_StepRight_Wins()
{
var env = new RandomWalkEnvironment(5, 4);
var(_, reward, isDone) = env.DebugStep(1);
Assert.AreEqual(1, reward);
Assert.True(isDone);
}
public void WhenStartingInMiddle_StepRight_IncrementsPosition()
{
var env = new RandomWalkEnvironment(5, 3);
var(state, reward, isDone) = env.DebugStep(1);
Assert.AreEqual(4, state);
Assert.AreEqual(0, reward);
Assert.False(isDone);
}