private static void TestSearchMatches(ISearchAlgorithm<int[]> searcher, char[] s, char[] key, int expectedCount)
{
if (s.Length < 1)
{
throw new ArgumentException("s.Length < 1");
}
if (key.Length < 1)
{
throw new ArgumentException("key.Length < 1");
}
var keyLen = key.Length;
var matchIndices = searcher.SearchAll(s, key);
// Try to catch invalid indices early by
// comparing result length with expected count
Assert.AreEqual(expectedCount, matchIndices.Length);
// For each match, compare every character to key
foreach (var start in matchIndices)
{
var match = s.Skip(start).Take(keyLen).ToArray();
// Try to catch invalid match without evaluating chars
// by comparing match length against search key length
Assert.AreEqual(keyLen, match.Length);
for (int ci = 0; ci < keyLen; ci++)
{
Assert.AreEqual(key[ci], match[ci]);
}
}
}