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import unittest
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import time
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import concurrent.futures
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import os
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import sys
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sys.path.append(os.path.abspath(os.path.join(os.path.dirname(__file__), '..')))
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def mock_process_phase(phase_name, delay, api_key):
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print(f"Starting {phase_name} with key {api_key}...")
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time.sleep(delay)
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print(f"Finished {phase_name}")
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return f"Result for {phase_name} using {api_key}"
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class TestParallelProcessing(unittest.TestCase):
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def test_parallel_execution(self):
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"""
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Verify that 3 tasks taking 2 seconds each finish in roughly 2 seconds total, not 6.
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"""
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api_keys = ["KEY_1", "KEY_2", "KEY_3"]
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phases = ["r", "y", "b"]
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delay = 2.0
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start_time = time.time()
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results = {}
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with concurrent.futures.ThreadPoolExecutor(max_workers=3) as executor:
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future_to_phase = {
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executor.submit(mock_process_phase, phase, delay, api_keys[i]): phase
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for i, phase in enumerate(phases)
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}
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for future in concurrent.futures.as_completed(future_to_phase):
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phase = future_to_phase[future]
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try:
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data = future.result()
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results[phase] = data
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except Exception as exc:
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print(f'{phase} generated an exception: {exc}')
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end_time = time.time()
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duration = end_time - start_time
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print(f"\nTotal duration: {duration:.2f} seconds")
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print(f"Results: {results}")
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self.assertLess(duration, 3.0, "Parallel execution took too long! Should be close to 2s, not 6s.")
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self.assertEqual(len(results), 3, "Did not get results for all 3 phases")
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self.assertTrue("KEY_1" in results['r'])
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self.assertTrue("KEY_2" in results['y'])
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self.assertTrue("KEY_3" in results['b'])
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if __name__ == '__main__':
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unittest.main()
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