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73 lines
3.1 KiB
Python
73 lines
3.1 KiB
Python
"""Tests for rate-limiter."""
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import pytest
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from solution import RateLimiter
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class TestBasicCases:
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"""Test basic functionality with typical inputs."""
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def test_example_one(self):
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"""Test first example from problem description."""
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limiter = RateLimiter(max_requests=3, window_seconds=60)
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assert limiter.allow_request("user1", 0) == True
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assert limiter.allow_request("user1", 30) == True
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assert limiter.allow_request("user1", 45) == True
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assert limiter.allow_request("user1", 50) == False
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assert limiter.allow_request("user1", 61) == True
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def test_example_two(self):
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"""Test second example from problem description."""
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limiter = RateLimiter(max_requests=2, window_seconds=10)
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assert limiter.allow_request("user1", 0) == True
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assert limiter.allow_request("user2", 0) == True
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assert limiter.allow_request("user1", 5) == True
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assert limiter.allow_request("user1", 8) == False
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def test_multiple_users_independent(self):
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"""Test each user has independent limits."""
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limiter = RateLimiter(max_requests=1, window_seconds=60)
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assert limiter.allow_request("user1", 0) == True
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assert limiter.allow_request("user2", 0) == True
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assert limiter.allow_request("user1", 30) == False
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assert limiter.allow_request("user2", 30) == False
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def test_get_remaining_basic(self):
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"""Test remaining count decreases with requests."""
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limiter = RateLimiter(max_requests=3, window_seconds=60)
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assert limiter.get_remaining("user1", 0) == 3
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limiter.allow_request("user1", 0)
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assert limiter.get_remaining("user1", 0) == 2
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class TestEdgeCases:
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"""Test edge cases and boundary conditions."""
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def test_window_expiration(self):
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"""Test old requests expire from window."""
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limiter = RateLimiter(max_requests=2, window_seconds=60)
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assert limiter.allow_request("user1", 0) == True
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assert limiter.allow_request("user1", 30) == True
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assert limiter.allow_request("user1", 45) == False
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assert limiter.allow_request("user1", 61) == True
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def test_single_request_limit(self):
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"""Test with limit of 1 request."""
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limiter = RateLimiter(max_requests=1, window_seconds=10)
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assert limiter.allow_request("user1", 0) == True
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assert limiter.allow_request("user1", 5) == False
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assert limiter.allow_request("user1", 11) == True
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def test_new_user_full_allowance(self):
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"""Test new users start with full allowance."""
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limiter = RateLimiter(max_requests=5, window_seconds=60)
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limiter.allow_request("user1", 0)
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assert limiter.get_remaining("new_user", 20) == 5
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def test_rapid_same_timestamp(self):
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"""Test multiple requests at same timestamp."""
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limiter = RateLimiter(max_requests=3, window_seconds=1)
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assert limiter.allow_request("user1", 0) == True
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assert limiter.allow_request("user1", 0) == True
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assert limiter.allow_request("user1", 0) == True
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assert limiter.allow_request("user1", 0) == False
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