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"""
Test the library API functionality
"""
import unittest
import unittest.mock
import tempfile
import os
from pathlib import Path
from openevolve.api import (
run_evolution,
evolve_function,
evolve_algorithm,
evolve_code,
EvolutionResult,
_prepare_program,
_prepare_evaluator
)
from openevolve.config import Config
class TestAPIFunctions(unittest.TestCase):
def setUp(self):
self.temp_dir = tempfile.mkdtemp()
def tearDown(self):
import shutil
shutil.rmtree(self.temp_dir, ignore_errors=True)
def test_evolution_result_class(self):
"""Test EvolutionResult dataclass"""
result = EvolutionResult(
best_program=None,
best_score=0.85,
best_code="def test(): pass",
metrics={"score": 0.85, "runtime": 1.2},
output_dir="/tmp/test"
)
self.assertEqual(result.best_score, 0.85)
self.assertEqual(result.best_code, "def test(): pass")
self.assertIn("0.8500", str(result))
def test_prepare_program_from_file(self):
"""Test _prepare_program with existing file"""
program_file = os.path.join(self.temp_dir, "test_program.py")
with open(program_file, 'w') as f:
f.write("def test(): return 42")
temp_files = []
result = _prepare_program(program_file, self.temp_dir, temp_files)
self.assertEqual(result, program_file)
self.assertEqual(len(temp_files), 0)
def test_prepare_program_from_string(self):
"""Test _prepare_program with code string"""
code = "def test(): return 42"
temp_files = []
result = _prepare_program(code, self.temp_dir, temp_files)
self.assertTrue(os.path.exists(result))
self.assertEqual(len(temp_files), 1)
with open(result, 'r') as f:
content = f.read()
self.assertIn("EVOLVE-BLOCK-START", content)
self.assertIn("EVOLVE-BLOCK-END", content)
self.assertIn("def test(): return 42", content)
def test_prepare_program_from_list(self):
"""Test _prepare_program with list of lines"""
lines = ["def test():", " return 42"]
temp_files = []
result = _prepare_program(lines, self.temp_dir, temp_files)
self.assertTrue(os.path.exists(result))
self.assertEqual(len(temp_files), 1)
with open(result, 'r') as f:
content = f.read()
self.assertIn("def test():\n return 42", content)
def test_prepare_program_with_existing_markers(self):
"""Test _prepare_program doesn't add duplicate markers"""
code = """# EVOLVE-BLOCK-START
def test():
return 42
# EVOLVE-BLOCK-END"""
temp_files = []
result = _prepare_program(code, self.temp_dir, temp_files)
with open(result, 'r') as f:
content = f.read()
# Should not have nested markers
self.assertEqual(content.count("EVOLVE-BLOCK-START"), 1)
self.assertEqual(content.count("EVOLVE-BLOCK-END"), 1)
def test_prepare_evaluator_from_file(self):
"""Test _prepare_evaluator with existing file"""
eval_file = os.path.join(self.temp_dir, "evaluator.py")
with open(eval_file, 'w') as f:
f.write("def evaluate(path): return {'score': 1.0}")
temp_files = []
result = _prepare_evaluator(eval_file, self.temp_dir, temp_files)
self.assertEqual(result, eval_file)
self.assertEqual(len(temp_files), 0)
def test_prepare_evaluator_from_callable(self):
"""Test _prepare_evaluator with callable function"""
def my_evaluator(program_path):
return {"score": 0.8, "test": "passed"}
temp_files = []
result = _prepare_evaluator(my_evaluator, self.temp_dir, temp_files)
self.assertTrue(os.path.exists(result))
self.assertEqual(len(temp_files), 1)
with open(result, 'r') as f:
content = f.read()
self.assertIn("def evaluate(program_path)", content)
self.assertIn("user_evaluator", content)
def test_prepare_evaluator_from_string(self):
"""Test _prepare_evaluator with code string"""
code = "def evaluate(path): return {'score': 0.9}"
temp_files = []
result = _prepare_evaluator(code, self.temp_dir, temp_files)
self.assertTrue(os.path.exists(result))
self.assertEqual(len(temp_files), 1)
with open(result, 'r') as f:
content = f.read()
self.assertEqual(content, code)
def test_prepare_evaluator_string_without_evaluate_function(self):
"""Test _prepare_evaluator raises error for invalid code string"""
code = "def my_function(): pass"
temp_files = []
with self.assertRaises(ValueError):
_prepare_evaluator(code, self.temp_dir, temp_files)
def test_evolve_function_basic(self):
"""Test evolve_function with simple test case"""
def initial_sort(arr):
# Simple bubble sort
for i in range(len(arr)):
for j in range(len(arr)-1):
if arr[j] > arr[j+1]:
arr[j], arr[j+1] = arr[j+1], arr[j]
return arr
test_cases = [
([3, 1, 2], [1, 2, 3]),
([5, 2], [2, 5]),
]
# Mock the async controller to avoid actual evolution
with unittest.mock.patch('openevolve.api._run_evolution_async') as mock_async:
mock_async.return_value = EvolutionResult(
best_program=None,
best_score=1.0,
best_code="def initial_sort(arr): return sorted(arr)",
metrics={"score": 1.0, "test_pass_rate": 1.0},
output_dir=None
)
result = evolve_function(initial_sort, test_cases, iterations=1)
self.assertIsInstance(result, EvolutionResult)
self.assertEqual(result.best_score, 1.0)
mock_async.assert_called_once()
def test_evolve_algorithm_basic(self):
"""Test evolve_algorithm with simple class"""
class SimpleAlgorithm:
def process(self, data):
return sum(data)
def benchmark(instance):
result = instance.process([1, 2, 3])
return {"score": 1.0 if result == 6 else 0.0}
# Mock the controller
with unittest.mock.patch('openevolve.api._run_evolution_async') as mock_async:
mock_async.return_value = EvolutionResult(
best_program=None,
best_score=1.0,
best_code="class SimpleAlgorithm: pass",
metrics={"score": 1.0},
output_dir=None
)
result = evolve_algorithm(SimpleAlgorithm, benchmark, iterations=1)
self.assertIsInstance(result, EvolutionResult)
self.assertEqual(result.best_score, 1.0)
mock_async.assert_called_once()
def test_evolve_code_basic(self):
"""Test evolve_code with string input"""
code = "def fibonacci(n): return n if n <= 1 else fibonacci(n-1) + fibonacci(n-2)"
def evaluator(program_path):
return {"score": 0.5, "correctness": True}
# Mock the controller
with unittest.mock.patch('openevolve.api._run_evolution_async') as mock_async:
mock_async.return_value = EvolutionResult(
best_program=None,
best_score=0.8,
best_code=code,
metrics={"score": 0.8},
output_dir=None
)
result = evolve_code(code, evaluator, iterations=1)
self.assertIsInstance(result, EvolutionResult)
self.assertEqual(result.best_score, 0.8)
mock_async.assert_called_once()
def test_run_evolution_with_config_object(self):
"""Test run_evolution with Config object"""
config = Config()
config.num_iterations = 5
# Mock the controller
with unittest.mock.patch('openevolve.api._run_evolution_async') as mock_async:
mock_async.return_value = EvolutionResult(
best_program=None,
best_score=0.9,
best_code="def test(): pass",
metrics={"score": 0.9},
output_dir=None
)
result = run_evolution(
initial_program="def test(): pass",
evaluator=lambda p: {"score": 1.0},
config=config,
iterations=10
)
self.assertIsInstance(result, EvolutionResult)
self.assertEqual(result.best_score, 0.9)
mock_async.assert_called_once()
def test_run_evolution_cleanup_false(self):
"""Test run_evolution with cleanup=False"""
with unittest.mock.patch('openevolve.api._run_evolution_async') as mock_async:
mock_async.return_value = EvolutionResult(
best_program=None,
best_score=0.7,
best_code="def test(): pass",
metrics={"score": 0.7},
output_dir="/tmp/test_output"
)
result = run_evolution(
initial_program="def test(): pass",
evaluator=lambda p: {"score": 1.0},
cleanup=False,
output_dir="/tmp/test_output"
)
self.assertEqual(result.output_dir, "/tmp/test_output")
mock_async.assert_called_once()
if __name__ == '__main__':
unittest.main() |