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import os
import sys
import unittest
try:
from _testinternalcapi import perf_map_state_teardown, write_perf_map_entry
except ImportError:
raise unittest.SkipTest("requires _testinternalcapi")
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()