Parameterize temperature conversion tests in both package examples

examples/pure-hatch/tests/examplePy/test_temperature.py

@@ -1,6 +1,6 @@
 """Pytest-based unit test examples for the temperature module"""
 
-import math
+import pytest
 
 from examplePy import temperature
 
@@ -43,56 +43,29 @@ def test_temperature_workflow():
     assert abs(result - 50.0) < 0.01
 
 
-def test_fahrenheit_to_celsius_positive():
-    """Test F to C calculation for positive values"""
-    value = 95
-    expected_result = 35
+@pytest.mark.parametrize(
+    "value, expected",
+    [
+        pytest.param(95, 35, id="positive"),
+        pytest.param(-13, -25, id="negative"),
+        pytest.param(0, -17.7778, id="zero"),
+    ],
+)
+def test_fahrenheit_to_celsius(value, expected):
+    """Check known Fahrenheit/Celsius pairs, including zero Fahrenheit."""
     result = temperature.fahrenheit_to_celsius(value)
-
-    assert result == expected_result
-
-
-def test_fahrenheit_to_celsius_negative():
-    """Test F to C calculation for negative values"""
-    value = -13
-    expected_result = -25
-    result = temperature.fahrenheit_to_celsius(value)
-
-    assert result == expected_result
-
-
-def test_fahrenheit_to_celsius_zero():
-    """Test F to C calculation for zero"""
-    value = 0
-    expected_result = -17.7778
-    result = temperature.fahrenheit_to_celsius(value)
-
-    # Test that the result is close to the expected value, within tolerances
-    assert math.isclose(result, expected_result, abs_tol=0.0001)
-
-
-def test_celsius_to_fahrenheit_positive():
-    """Test C to F calculation for positive values"""
-    value = 100
-    expected_result = 212
-    result = temperature.celsius_to_fahrenheit(value)
-
-    assert result == expected_result
-
-
-def test_celsius_to_fahrenheit_negative():
-    """Test C to F calculation for negative values"""
-    value = -20
-    expected_result = -4
+    assert result == pytest.approx(expected, abs=0.0001)
+
+
+@pytest.mark.parametrize(
+    "value, expected",
+    [
+        pytest.param(100, 212, id="positive"),
+        pytest.param(-20, -4, id="negative"),
+        pytest.param(0, 32, id="zero"),
+    ],
+)
+def test_celsius_to_fahrenheit(value, expected):
+    """Check known Celsius/Fahrenheit pairs."""
     result = temperature.celsius_to_fahrenheit(value)
-
-    assert result == expected_result
-
-
-def test_celsius_to_fahrenheit_zero():
-    """Test C to F calculation for zero"""
-    value = 0
-    expected_result = 32
-    result = temperature.celsius_to_fahrenheit(value)
-
-    assert result == expected_result
+    assert result == pytest.approx(expected, abs=0.0001)

examples/pure-setuptools/tests/examplePy/test_temperature.py

@@ -1,60 +1,32 @@
-"""Pytest-based unit test examples for the temperature module"""
-
-import math
+"""Parametrized conversion cases for the example temperature module."""
 
+import pytest
 from examplePy import temperature
 
 
-def test_fahrenheit_to_celsius_positive():
-    """Test F to C calculation for positive values"""
-    value = 95
-    expected_result = 35
-    result = temperature.fahrenheit_to_celsius(value)
-
-    assert result == expected_result
-
-
-def test_fahrenheit_to_celsius_negative():
-    """Test F to C calculation for negative values"""
-    value = -13
-    expected_result = -25
+@pytest.mark.parametrize(
+    "value, expected",
+    [
+        pytest.param(95, 35, id="positive"),
+        pytest.param(-13, -25, id="negative"),
+        pytest.param(0, -17.7778, id="zero"),
+    ],
+)
+def test_fahrenheit_to_celsius(value, expected):
+    """Check known Fahrenheit/Celsius pairs, including zero Fahrenheit."""
     result = temperature.fahrenheit_to_celsius(value)
-
-    assert result == expected_result
-
-
-def test_fahrenheit_to_celsius_zero():
-    """Test F to C calculation for zero"""
-    value = 0
-    expected_result = -17.7778
-    result = temperature.fahrenheit_to_celsius(value)
-
-    # Test that the result is close to the expected value, within tolerances
-    assert math.isclose(result, expected_result, abs_tol=0.0001)
-
-
-def test_celsius_to_fahrenheit_positive():
-    """Test C to F calculation for positive values"""
-    value = 100
-    expected_result = 212
-    result = temperature.celsius_to_fahrenheit(value)
-
-    assert result == expected_result
-
-
-def test_celsius_to_fahrenheit_negative():
-    """Test C to F calculation for negative values"""
-    value = -20
-    expected_result = -4
+    assert result == pytest.approx(expected, abs=0.0001)
+
+
+@pytest.mark.parametrize(
+    "value, expected",
+    [
+        pytest.param(100, 212, id="positive"),
+        pytest.param(-20, -4, id="negative"),
+        pytest.param(0, 32, id="zero"),
+    ],
+)
+def test_celsius_to_fahrenheit(value, expected):
+    """Check known Celsius/Fahrenheit pairs."""
     result = temperature.celsius_to_fahrenheit(value)
-
-    assert result == expected_result
-
-
-def test_celsius_to_fahrenheit_zero():
-    """Test C to F calculation for zero"""
-    value = 0
-    expected_result = 32
-    result = temperature.celsius_to_fahrenheit(value)
-
-    assert result == expected_result
+    assert result == pytest.approx(expected, abs=0.0001)