svoid test_tok_leftScanType() {
  LS tok = javaTok("a.b.c d");
  assertEqualsVerbose("a", get(tok, tok_leftScanType(tok, indexOf(tok, "d"))));
  
  tok = javaTok("= a c");
  assertEqualsVerbose("a", get(tok, tok_leftScanType(tok, indexOf(tok, "c"))));
  
  tok = javaTok("b[] c");
  assertEqualsVerbose("b", get(tok, tok_leftScanType(tok, indexOf(tok, "c"))));
  
  tok = javaTok("a<b, c>.d e");
  assertEqualsVerbose("a", get(tok, tok_leftScanType(tok, indexOf(tok, "e"))));
}