assertEquals(AlignSeq.extractGaps(" -", " AC-G.T"), "ACG.T");
assertEquals(AlignSeq.extractGaps(" -.", " AC-G.T ."), "ACGT");
assertEquals(AlignSeq.extractGaps("-", " AC-G.T"), " ACG.T");
assertEquals(AlignSeq.extractGaps(" -", " AC-G.T"), "ACG.T");
assertEquals(AlignSeq.extractGaps(" -.", " AC-G.T ."), "ACGT");
assertEquals(AlignSeq.extractGaps("-", " AC-G.T"), " ACG.T");