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Python

import os
import sys
import unittest
import torch
PROJECT_ROOT = os.path.realpath(os.path.join(os.path.dirname(__file__), "..", ".."))
MODULE_ROOT = os.path.join(PROJECT_ROOT, "modules")
sys.path.append(MODULE_ROOT)
from pytorch_wrapper.pt_apply_function import PtApplyFunction
class TestPtApplyFunction(unittest.TestCase):
def setUp(self):
"""Set up test instance."""
self.node = PtApplyFunction()
# Softplus function for testing
self.test_function = torch.nn.functional.softplus
# Test cases: (Input Tensor, Expected Softplus Output)
self.test_cases = [
(torch.tensor([-1.0, 0.0, 1.0]), self.test_function(torch.tensor([-1.0, 0.0, 1.0]))),
(torch.tensor([[-2.0, 2.0], [3.0, -3.0]]), self.test_function(torch.tensor([[-2.0, 2.0], [3.0, -3.0]]))),
(torch.tensor([0.5, -0.5, 5.0, -5.0]), self.test_function(torch.tensor([0.5, -0.5, 5.0, -5.0]))),
]
def test_apply_function(self):
"""Test the function application."""
for input_tensor, expected in self.test_cases:
with self.subTest(input_tensor=input_tensor):
result, = self.node.f(input_tensor, self.test_function)
# Ensure output is a tensor
self.assertTrue(isinstance(result, torch.Tensor), "Output is not a tensor")
# Ensure result matches expected output (allowing for floating-point tolerance)
self.assertTrue(torch.allclose(result, expected, atol=1e-6), f"Expected {expected}, got {result}")
if __name__ == "__main__":
unittest.main()