def test_is_result_correct_when_the_element_is_a_dict():
elem = {"first": ["RED", "BLUE"]}
assert find_occurrences(example_tree, elem) == 1
def test_is_result_correct_when_the_element_is_a_nested_dict():
elem = {"nested_key": "RED"}
assert find_occurrences(example_tree, elem) == 1
def test_is_result_correct_when_the_element_is_a_sequence():
elem = ["RED", "BLUE"]
assert find_occurrences(example_tree, elem) == 1
def test_result_on_red_changes_with_deleting_one_red():
new = example_tree.copy()
del new["fourth"]
assert find_occurrences(new, "RED") == 5
def test_there_are_no_fifth_in_example_tree():
assert find_occurrences(example_tree, "fifth") == 0
def test_there_are_one_nested_key_in_example_tree():
assert find_occurrences(example_tree, "nested_key") == 1
def test_there_are_six_red_in_example_tree():
assert find_occurrences(example_tree, "RED") == 6