import os import sys import unittest from _testinternalcapi import perf_map_state_teardown, write_perf_map_entry if sys.platform != 'linux': raise unittest.SkipTest('Linux only') class TestPerfMapWriting(unittest.TestCase): def test_write_perf_map_entry(self): self.assertEqual(write_perf_map_entry(0x1234, 5678, "entry1"), 0) self.assertEqual(write_perf_map_entry(0x2345, 6789, "entry2"), 0) with open(f"/tmp/perf-{os.getpid()}.map") as f: perf_file_contents = f.read() self.assertIn("1234 162e entry1", perf_file_contents) self.assertIn("2345 1a85 entry2", perf_file_contents) perf_map_state_teardown()