new_contents: import pytest
  
  from stix2matcher.matcher import match
  
  
  _observations = [
      {
          "type": "observed-data",
          "number_observed": 1,
          "first_observed": "2004-11-26T11:42:29Z",
          "objects": {
              "0": {
                  "type": u"person",
                  "name": u"alice",
                  "age": 10
              },
              "1": {
                  "type": u"person",
                  "name": u"bob",
                  "age": 15
              }
          }
      }
  ]
  
  
  @pytest.mark.parametrize("pattern", [
      "[person:name = 'alice' and person:age < 20]",
      "[person:name = 'alice' or person:age > 20]",
      "[person:name = 'alice' or person:age > 1000 and person:age < 0]",
      "[(person:name = 'carol' or person:name = 'bob') and person:age > 10]",
      "[(person:name = 'darlene' or person:name = 'carol') and person:age < 0 or person:age > 5]"
  ])
  def test_comparison_and_or_match(pattern):
      assert match(pattern, _observations)
  
  
  @pytest.mark.parametrize("pattern", [
      "[person:name = 'alice' and person:age > 10]",
      "[person:name = 'carol' or person:age > 20]",
      "[(person:age = 'alice' or person:age > 1000) and person:age < 0]",
      "[(person:name = 'darlene' or person:name = 'carol') and (person:age < 0 or person:age > 5)]"
  ])
  def test_comparison_and_or_nomatch(pattern):
      assert not match(pattern, _observations)
  
subject: Add some tests for comparison expressions: and, or, and order of operations.