public void GetLinesFromAndGroupBlockTest()
{
int patternLength = 4;
var pattern = new string('\0', patternLength);
LineBuilder builder = new LineBuilder(pattern, null);
// (a|aa)(b|bb)
TextBlock aBlock = new TextBlock("a");
TextBlock aaBlock = new TextBlock("aa");
TextBlock bBlock = new TextBlock("b");
TextBlock bbBlock = new TextBlock("bb");
OrGroupBlock orGroupBlock1 = new OrGroupBlock(new[] { aBlock, aaBlock });
OrGroupBlock orGroupBlock2 = new OrGroupBlock(new[] { bBlock, bbBlock });
AndGroupBlock andGroupBlock = new AndGroupBlock(new[] { orGroupBlock1, orGroupBlock2 });
List<string> lines = builder.GetLinesFromAndGroupBlock(0, andGroupBlock).ToList();
string[] expectedLines = new string[] { "ab", "abb", "aab", "aabb" };
CollectionAssert.AreEquivalent(expectedLines, lines);
}