From cda50c0135711c6461400c51bc3a641286625c09 Mon Sep 17 00:00:00 2001
From: Piotr <272503@student.pwr.edu.pl>
Date: Wed, 14 May 2025 16:24:41 +0200
Subject: [PATCH 1/2] poprawki

---
 test_utils.py | 21 +++++++++++++++++++++
 utils.py      |  8 ++++++++
 2 files changed, 29 insertions(+)

diff --git a/test_utils.py b/test_utils.py
index 5a264b2..fb6da18 100644
--- a/test_utils.py
+++ b/test_utils.py
@@ -30,3 +30,24 @@ def test_multiply(a, b, expected):
 def test_divide(a, b, expected):
     result = utils.divide(a, b)
     assert result == expected
+
+@pytest.mark.parametrize("n, expected", [
+    (0, "0b0"),
+    (1, "0b1"),
+    (2, "0b10"),
+    (10, "0b1010"),
+    (100, "0b1100100")
+])
+def test_to_binary_valid(n, expected):
+    assert utils.to_binary(n) == expected
+
+@pytest.mark.parametrize("n", [-1, 101, 999])
+def test_to_binary_out_of_range(n):
+    with pytest.raises(ValueError):
+        utils.to_binary(n)
+
+@pytest.mark.parametrize("n", [1.5, "10", None])
+def test_to_binary_not_natural(n):
+    with pytest.raises(TypeError):
+        utils.to_binary(n)
+
diff --git a/utils.py b/utils.py
index 4a1de3e..12c022a 100644
--- a/utils.py
+++ b/utils.py
@@ -21,3 +21,11 @@ def multiply(a: int, b: int) -> int:
 def divide(a: int, b: int) -> float:
     """Divide the first integer by the second and return the result as a float."""
     return a / b
+
+def to_binary(n: int) -> str:
+    """Convert a natural number (0–100) to binary string. Raise if invalid."""
+    if not isinstance(n, int):
+        raise TypeError("Input must be an integer.")
+    if not 0 <= n <= 100:
+        raise ValueError("Input must be in range 0 to 100.")
+    return bin(n)

From 60a29f088b0c08082f52979e746f404eef4bd586 Mon Sep 17 00:00:00 2001
From: Piotr <272503@student.pwr.edu.pl>
Date: Wed, 14 May 2025 16:27:42 +0200
Subject: [PATCH 2/2] poprawki

---
 test_utils.py | 15 +++++++--------
 utils.py      |  1 +
 2 files changed, 8 insertions(+), 8 deletions(-)

diff --git a/test_utils.py b/test_utils.py
index fb6da18..dd29733 100644
--- a/test_utils.py
+++ b/test_utils.py
@@ -31,23 +31,22 @@ def test_divide(a, b, expected):
     result = utils.divide(a, b)
     assert result == expected
 
-@pytest.mark.parametrize("n, expected", [
-    (0, "0b0"),
-    (1, "0b1"),
-    (2, "0b10"),
-    (10, "0b1010"),
-    (100, "0b1100100")
-])
+
+@pytest.mark.parametrize(
+    "n, expected",
+    [(0, "0b0"), (1, "0b1"), (2, "0b10"), (10, "0b1010"), (100, "0b1100100")],
+)
 def test_to_binary_valid(n, expected):
     assert utils.to_binary(n) == expected
 
+
 @pytest.mark.parametrize("n", [-1, 101, 999])
 def test_to_binary_out_of_range(n):
     with pytest.raises(ValueError):
         utils.to_binary(n)
 
+
 @pytest.mark.parametrize("n", [1.5, "10", None])
 def test_to_binary_not_natural(n):
     with pytest.raises(TypeError):
         utils.to_binary(n)
-
diff --git a/utils.py b/utils.py
index 12c022a..11b8ffb 100644
--- a/utils.py
+++ b/utils.py
@@ -22,6 +22,7 @@ def divide(a: int, b: int) -> float:
     """Divide the first integer by the second and return the result as a float."""
     return a / b
 
+
 def to_binary(n: int) -> str:
     """Convert a natural number (0–100) to binary string. Raise if invalid."""
     if not isinstance(n, int):