public void testGraphs() throws IOException {
TokenStream tk = new LetterTokenizer(TEST_VERSION_CURRENT, new StringReader("abc d efgh ij klmno p q"));
tk = new ShingleFilter(tk);
tk = new EdgeNGramTokenFilter(TEST_VERSION_CURRENT, tk, 7, 10);
tk.reset();
assertTokenStreamContents(tk,
new String[] { "efgh ij", "ij klmn", "ij klmno", "klmno p" },
new int[] { 6,11,11,14 },
new int[] { 13,19,19,21 },
new int[] { 3,1,0,1 },