Add more comprehensive benchmarks.

test.py

@@ -1,3 +1,5 @@
+import random
+
 import unit_converter
 
 
@@ -10,11 +12,23 @@ def test_using_unit_converter():
     assert python_unit_converter(25.0) == 77.0
 
 
-def test_using_python(benchmark):
+def test_using_python_constant(benchmark):
     result = benchmark(python_unit_converter, 25.0)
-    assert result == 77.0
+    assert round(result, 3) == round(77.0, 3)
+
+
+def test_using_rust_constant(benchmark):
+    result = benchmark(unit_converter.convert_celsius_to_fahrenheit, 25.0)
+    assert round(result, 3) == round(77.0, 3)
+
+
+def test_using_python(benchmark):
+    temperature = random.random() * 100
+    result = benchmark(python_unit_converter, temperature)
+    assert round(result, 3) == round(python_unit_converter(temperature), 3)
 
 
 def test_using_rust(benchmark):
-    result = benchmark(unit_converter.convert_celsius_to_fahrenheit, 25.0)
-    assert result == 77.0
+    temperature = random.random() * 100
+    result = benchmark(unit_converter.convert_celsius_to_fahrenheit, temperature)
+    assert round(result, 3) == round(python_unit_converter(temperature), 3)