public void TestCombined()
{
var inc1 = new Incrementor(0, 3);
var inc2 = new Incrementor(5, 7);
var combined = Incrementor.CreateCombined(new Incrementor[] { inc1, inc2 });
string[] expected = { "05", "06", "07", "15", "16", "17", "25", "26", "27", "35", "36", "37" };
for (int i = 0; i < expected.Length; i++)
{
combined.ToString().Should().Be(expected[i]);
if (combined.CanIncrement)
{
combined = combined.IncrementValue();
}
}
}
public void TestLongCombined()
{
int incrementorCount = _random.Next(3, 10);
Incrementor[] incrementors = Enumerable.Range(1, incrementorCount).Select(i => CreateRandomIncrementor()).ToArray();
Incrementor combined = Incrementor.CreateCombined(incrementors);
int count = 0;
while (combined.CanIncrement)
{
count++;
combined = combined.IncrementValue();
}
int expectedPossibilities = (incrementors.Select(i => i.Maximum).Aggregate(1, (a, i) => a * (i + 1)) - 1);
count.Should().Be(expectedPossibilities);
string expectedFinalString = string.Join("", incrementors.Select(i => i.Maximum.ToString()));
combined.ToString().Should().Be(expectedFinalString);
}