lldb/test/API/commands/log/basic/TestLogHandlers.py

   1 """
   2 Test lldb log handlers.
   3 """
   4
   5 import os
   6 import lldb
   7 from lldbsuite.test.decorators import *
   8 from lldbsuite.test.lldbtest import *
   9 from lldbsuite.test import lldbutil
  10
  11
  12 class LogHandlerTestCase(TestBase):
  13     NO_DEBUG_INFO_TESTCASE = True
  14
  15     def setUp(self):
  16         TestBase.setUp(self)
  17         self.log_file = self.getBuildArtifact("log-file.txt")
  18         if os.path.exists(self.log_file):
  19             os.remove(self.log_file)
  20
  21     def test_circular(self):
  22         self.runCmd("log enable -b 5 -h circular lldb commands")
  23         self.runCmd("bogus", check=False)
  24         self.runCmd("log dump lldb -f {}".format(self.log_file))
  25
  26         with open(self.log_file, "r") as f:
  27             log_lines = f.readlines()
  28
  29         self.assertEqual(len(log_lines), 5)
  30
  31         found_command_log_dump = False
  32         found_command_bogus = False
  33
  34         for line in log_lines:
  35             if "Processing command: log dump" in line:
  36                 found_command_log_dump = True
  37             if "Processing command: bogus" in line:
  38                 found_command_bogus = True
  39
  40         self.assertTrue(found_command_log_dump)
  41         self.assertFalse(found_command_bogus)
  42
  43     def test_circular_no_buffer_size(self):
  44         self.expect(
  45             "log enable -h circular lldb commands",
  46             error=True,
  47             substrs=["the circular buffer handler requires a non-zero buffer size"],
  48         )
  49
  50     def test_dump_unsupported(self):
  51         self.runCmd("log enable lldb commands -f {}".format(self.log_file))
  52         self.expect(
  53             "log dump lldb",
  54             error=True,
  55             substrs=["log channel 'lldb' does not support dumping"],
  56         )