Coverage for Users / vladimirpavlov / PycharmProjects / parameterizable / tests / test_dict_sorter.py: 100%

1from mixinforge.dict_sorter import sort_dict_by_keys 

2 

3import pytest 

4 

5 

6def test_sort_dict_by_keys_basic(): 

7 """ 

8 Test that the function correctly sorts a dictionary 

9 whose keys are in an arbitrary order. 

10 """ 

11 unsorted_dict = {"c": 3, "a": 1, "b": 2} 

12 expected = {"a": 1, "b": 2, "c": 3} 

13 assert sort_dict_by_keys(unsorted_dict) == expected 

14 

15def test_sort_dict_by_keys_already_sorted(): 

16 """ 

17 Test that the function returns the same dictionary 

18 if the keys are already sorted. 

19 """ 

20 sorted_dict = {"a": 1, "b": 2, "c": 3} 

21 assert sort_dict_by_keys(sorted_dict) == sorted_dict 

22 

23def test_sort_dict_by_keys_empty(): 

24 """ 

25 Test that the function handles an empty dictionary. 

26 """ 

27 assert sort_dict_by_keys({}) == {} 

28 

29def test_sort_dict_by_keys_single_key(): 

30 """ 

31 Test that the function works with a dictionary that has only one key. 

32 """ 

33 single_key_dict = {"a": 1} 

34 assert sort_dict_by_keys(single_key_dict) == single_key_dict 

35 

36def test_sort_dict_by_keys_case_sensitivity(): 

37 """ 

38 Test how the function handles case-sensitive sorting of keys. 

39 In ASCII, uppercase letters come before lowercase letters. 

40 """ 

41 mixed_case_dict = {"b": 2, "A": 1, "C": 3} 

42 # Sorted order by key (ASCII-based): "A" < "C" < "b" 

43 expected = {"A": 1, "C": 3, "b": 2} 

44 assert sort_dict_by_keys(mixed_case_dict) == expected 

45 

46def test_sort_dict_by_keys_numeric_strings(): 

47 """ 

48 Test that numeric strings as keys are also sorted correctly 

49 (lexicographically). 

50 """ 

51 numeric_str_keys = {"10": "ten", "2": "two", "1": "one"} 

52 # Lexicographic sort: "1", "10", "2" 

53 expected = {"1": "one", "10": "ten", "2": "two"} 

54 assert sort_dict_by_keys(numeric_str_keys) == expected 

55 

56def test_sort_dict_by_keys_assert_on_non_dict(): 

57 """ 

58 Test that the function raises an AssertionError 

59 when a non-dict is passed. 

60 """ 

61 with pytest.raises(TypeError): 

62 sort_dict_by_keys(["not", "a", "dict"])