@Test
public void singlePatternSimple() {

  // GIVEN
  simulateLengths(new Triple<>("a.b", 5L, 2L));
  // WHEN
  ColumnPatternContainer patterns = colPatternUtil.findColNamesForColNamePattern(env, "a.b[*].c");
  Set<List<String>> res = patterns.getColumnPatterns(1L);
  // THEN
  Set<List<String>> expected = new HashSet<>(Arrays.asList(Arrays.asList("a.b[0].c"), Arrays.asList("a.b[1].c")));
  Assert.assertEquals(res, expected, "Expected correct final colNames");
}