diff --git a/app/test_split_integer.py b/app/test_split_integer.py
index ef3aa668a..ec4d5d08a 100644
--- a/app/test_split_integer.py
+++ b/app/test_split_integer.py
@@ -1,21 +1,63 @@
-from app.split_integer import split_integer
+import pytest
+from app import split_integer
 
 
-def test_sum_of_the_parts_should_be_equal_to_value() -> None:
-    pass
+def test_basic_case() -> None:
+    assert split_integer.split_integer(8, 1) == [8]
 
 
-def test_should_split_into_equal_parts_when_value_divisible_by_parts() -> None:
-    pass
+def test_split_integer_6_2() -> None:
+    assert split_integer.split_integer(6, 2) == [3, 3]
 
 
-def test_should_return_part_equals_to_value_when_split_into_one_part() -> None:
-    pass
+def test_split_on_equal_part() -> None:
+    assert split_integer.split_integer(17, 4) == [4, 4, 4, 5]
 
 
-def test_parts_should_be_sorted_when_they_are_not_equal() -> None:
-    pass
+def test_split_and_increment_the_last_number() -> None:
+    assert split_integer.split_integer(32, 6) == [5, 5, 5, 5, 6, 6]
 
 
-def test_should_add_zeros_when_value_is_less_than_number_of_parts() -> None:
-    pass
+def test_split_on_incorrect_parts() -> None:
+    assert split_integer.split_integer(8, 2) == [4, 4]
+    assert split_integer.split_integer(10, 3) == [3, 3, 4]
+
+
+def test_split_on_different_parts() -> None:
+    assert split_integer.split_integer(2, 5) == [0, 0, 0, 1, 1]
+    assert split_integer.split_integer(100, 10) == [10] * 10
+
+
+@pytest.mark.parametrize(
+    "value, number_of_parts, expected",
+    [
+        (10, 1, [10]),
+        (8, 2, [4, 4]),
+        (17, 4, [4, 4, 4, 5]),
+        (32, 6, [5, 5, 5, 5, 6, 6]),
+        (2, 5, [0, 0, 0, 1, 1]),
+        (10, 3, [3, 3, 4]),
+        (100, 10, [10] * 10),
+    ]
+)
+def test_split_integer_exact(
+    value: int,
+    number_of_parts: int,
+    expected: list
+) -> None:
+    assert split_integer.split_integer(value, number_of_parts) == expected
+
+
+def test_sorted_ascending() -> None:
+    assert (
+        sorted(split_integer.split_integer(17, 4))
+        == split_integer.split_integer(17, 4)
+    )
+
+
+def test_max_min_difference() -> None:
+    assert (
+        max(split_integer.split_integer(32, 6))
+        - min(split_integer.split_integer(32, 6))
+        <= 1
+    )