fix: add max to slow test threshold and add tests

utils/test_results.py

@@ -33,7 +33,7 @@
 def slow_test_threshold(total_tests: int) -> int:
     percentile = (100 - SLOW_TEST_PERCENTILE) / 100
     slow_tests_to_return = floor(percentile * total_tests)
-    return max(slow_tests_to_return, 1)
+    return min(max(slow_tests_to_return, 1), 100)
 
 
 class ArrayLength(Func):

utils/tests/unit/test_slow_test_threshold.py

@@ -0,0 +1,23 @@
+import pytest
+
+from utils.test_results import slow_test_threshold
+
+
+@pytest.mark.parametrize(
+    "total_tests, expected_threshold",
+    [
+        (0, 1),
+        (1, 1),
+        (10, 1),
+        (100, 5),
+        (1000, 50),
+        (10000, 100),
+        (1000000, 100),
+        (20, 1),
+        (50, 2),
+        (200, 10),
+        (2000, 100),
+    ],
+)
+def test_slow_test_threshold(total_tests, expected_threshold):
+    assert slow_test_threshold(total_tests) == expected_threshold