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Update README
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Eugene Mironov
@@ -184,74 +184,6 @@ def test_max_after_reset(tracker):
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assert tracker.max() == 0.0
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# ====================== percentile() Tests ======================
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def test_percentile_returns_zero_when_empty(tracker):
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"""Test percentile() returns 0.0 when tracker is empty."""
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assert tracker.percentile(0.5) == 0.0
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assert tracker.percentile(0.95) == 0.0
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def test_percentile_median(tracker):
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"""Test percentile(0.5) returns median."""
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# Add sorted values for easier verification
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values = [0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9]
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for v in values:
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tracker.add(v)
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# Median should be around 0.5
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median = tracker.percentile(0.5)
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assert 0.45 <= median <= 0.55
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def test_percentile_minimum_with_zero(tracker):
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"""Test percentile(0.0) returns minimum."""
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tracker.add(0.5)
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tracker.add(0.2)
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tracker.add(0.8)
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assert tracker.percentile(0.0) == 0.2
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def test_percentile_maximum_with_one(tracker):
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"""Test percentile(1.0) returns maximum."""
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tracker.add(0.5)
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tracker.add(0.2)
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tracker.add(0.8)
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assert tracker.percentile(1.0) == 0.8
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def test_percentile_95(tracker):
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"""Test percentile(0.95) returns 95th percentile."""
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# Add 100 values from 0.0 to 0.99
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for i in range(100):
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tracker.add(i / 100.0)
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p95 = tracker.percentile(0.95)
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# 95th percentile should be around 0.95
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assert 0.93 <= p95 <= 0.96
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def test_percentile_negative_value_returns_min(tracker):
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"""Test percentile with negative q returns minimum."""
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tracker.add(0.5)
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tracker.add(0.2)
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tracker.add(0.8)
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assert tracker.percentile(-0.5) == 0.2
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def test_percentile_value_greater_than_one_returns_max(tracker):
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"""Test percentile with q > 1.0 returns maximum."""
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tracker.add(0.5)
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tracker.add(0.2)
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tracker.add(0.8)
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assert tracker.percentile(1.5) == 0.8
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# ====================== p95() Tests ======================
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@@ -278,79 +210,6 @@ def test_p95_equals_percentile_95(tracker):
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assert tracker.p95() == tracker.percentile(0.95)
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# ====================== __len__() Tests ======================
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def test_len_returns_zero_initially(tracker):
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"""Test __len__ returns 0 for new tracker."""
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assert len(tracker) == 0
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def test_len_increments_with_add(tracker):
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"""Test __len__ increments as values are added."""
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assert len(tracker) == 0
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tracker.add(0.1)
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assert len(tracker) == 1
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tracker.add(0.2)
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assert len(tracker) == 2
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tracker.add(0.3)
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assert len(tracker) == 3
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def test_len_respects_maxlen(small_tracker):
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"""Test __len__ respects maxlen limit."""
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# Add more than maxlen values
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for i in range(10):
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small_tracker.add(i / 10.0)
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# Should only keep last 5
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assert len(small_tracker) == 5
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def test_len_after_reset(tracker):
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"""Test __len__ returns 0 after reset."""
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tracker.add(0.5)
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tracker.add(0.3)
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assert len(tracker) == 2
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tracker.reset()
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assert len(tracker) == 0
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# ====================== Sliding Window Tests ======================
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def test_sliding_window_removes_oldest(small_tracker):
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"""Test sliding window removes oldest values."""
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# Add 7 values to tracker with maxlen=5
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values = [0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7]
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for v in values:
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small_tracker.add(v)
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# Should only have last 5: [0.3, 0.4, 0.5, 0.6, 0.7]
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assert len(small_tracker) == 5
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# Median should reflect last 5 values
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median = small_tracker.percentile(0.5)
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assert 0.45 <= median <= 0.55
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def test_sliding_window_maintains_max(small_tracker):
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"""Test sliding window maintains correct max even after overflow."""
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small_tracker.add(0.1)
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small_tracker.add(0.9)
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small_tracker.add(0.2)
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small_tracker.add(0.3)
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small_tracker.add(0.4)
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small_tracker.add(0.5) # Pushes out 0.1
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# Max should still be 0.9
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assert small_tracker.max() == 0.9
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# ====================== Edge Cases Tests ======================
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@@ -436,24 +295,6 @@ def test_reset_and_reuse(tracker):
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assert tracker.percentile(0.5) <= 0.8
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def test_continuous_monitoring(small_tracker):
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"""Test continuous monitoring with sliding window."""
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# Simulate continuous latency monitoring
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# First 5 latencies
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for i in range(5):
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small_tracker.add(0.1 * (i + 1))
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max_before = small_tracker.max()
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# Add 5 more (window slides)
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for i in range(5, 10):
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small_tracker.add(0.1 * (i + 1))
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# Max should have increased
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assert small_tracker.max() > max_before
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assert len(small_tracker) == 5 # Window size maintained
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# ====================== Type Conversion Tests ======================
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