| # Owner(s): ["module: unknown"] | 
 |  | 
 | import torch | 
 | from torch.testing._internal.common_utils import TestCase, run_tests | 
 |  | 
 |  | 
 | class LoggingTest(TestCase): | 
 |     def testApiUsage(self): | 
 |         """ | 
 |         This test verifies that api usage logging is not triggered via static | 
 |         initialization. Since it's triggered at first invocation only - we just | 
 |         subprocess | 
 |         """ | 
 |         s = TestCase.runWithPytorchAPIUsageStderr("import torch") | 
 |         self.assertRegex(s, "PYTORCH_API_USAGE.*import") | 
 |         # import the shared library directly - it triggers static init but doesn't call anything | 
 |         s = TestCase.runWithPytorchAPIUsageStderr("from ctypes import CDLL; CDLL('{}')".format(torch._C.__file__)) | 
 |         self.assertNotRegex(s, "PYTORCH_API_USAGE") | 
 |  | 
 |  | 
 | if __name__ == '__main__': | 
 |     run_tests() |