packages/Python/lldbsuite/test/functionalities/watchpoint/watchpoint_commands/condition/TestWatchpointConditionCmd.py

   1 """
   2 Test watchpoint modify command to set condition on a watchpoint.
   3 """
   4
   5 from __future__ import print_function
   6
   7
   8 import os
   9 import time
  10 import lldb
  11 from lldbsuite.test.decorators import *
  12 from lldbsuite.test.lldbtest import *
  13 from lldbsuite.test import lldbutil
  14
  15
  16 class WatchpointConditionCmdTestCase(TestBase):
  17
  18     mydir = TestBase.compute_mydir(__file__)
  19
  20     def setUp(self):
  21         # Call super's setUp().
  22         TestBase.setUp(self)
  23         # Our simple source filename.
  24         self.source = 'main.cpp'
  25         # Find the line number to break inside main().
  26         self.line = line_number(
  27             self.source, '// Set break point at this line.')
  28         # And the watchpoint variable declaration line number.
  29         self.decl = line_number(self.source,
  30                                 '// Watchpoint variable declaration.')
  31         # Build dictionary to have unique executable names for each test
  32         # method.
  33         self.exe_name = self.testMethodName
  34         self.d = {'CXX_SOURCES': self.source, 'EXE': self.exe_name}
  35
  36     # Watchpoints not supported
  37     @expectedFailureAndroid(archs=['arm', 'aarch64'])
  38     @expectedFailureAll(
  39         oslist=["linux"],
  40         archs=["aarch64"],
  41         bugnumber="llvm.org/pr27710")
  42     @expectedFailureAll(
  43         oslist=["windows"],
  44         bugnumber="llvm.org/pr24446: WINDOWS XFAIL TRIAGE - Watchpoints not supported on Windows")
  45     def test_watchpoint_cond(self):
  46         """Test watchpoint condition."""
  47         self.build(dictionary=self.d)
  48         self.setTearDownCleanup(dictionary=self.d)
  49
  50         exe = os.path.join(os.getcwd(), self.exe_name)
  51         self.runCmd("file " + exe, CURRENT_EXECUTABLE_SET)
  52
  53         # Add a breakpoint to set a watchpoint when stopped on the breakpoint.
  54         lldbutil.run_break_set_by_file_and_line(
  55             self, None, self.line, num_expected_locations=1)
  56
  57         # Run the program.
  58         self.runCmd("run", RUN_SUCCEEDED)
  59
  60         # We should be stopped again due to the breakpoint.
  61         # The stop reason of the thread should be breakpoint.
  62         self.expect("thread list", STOPPED_DUE_TO_BREAKPOINT,
  63                     substrs=['stopped',
  64                              'stop reason = breakpoint'])
  65
  66         # Now let's set a write-type watchpoint for 'global'.
  67         # With a condition of 'global==5'.
  68         self.expect(
  69             "watchpoint set variable -w write global",
  70             WATCHPOINT_CREATED,
  71             substrs=[
  72                 'Watchpoint created',
  73                 'size = 4',
  74                 'type = w',
  75                 '%s:%d' %
  76                 (self.source,
  77                  self.decl)])
  78
  79         self.runCmd("watchpoint modify -c 'global==5'")
  80
  81         # Use the '-v' option to do verbose listing of the watchpoint.
  82         # The hit count should be 0 initially.
  83         self.expect("watchpoint list -v",
  84                     substrs=['hit_count = 0', 'global==5'])
  85
  86         self.runCmd("process continue")
  87
  88         # We should be stopped again due to the watchpoint (write type).
  89         # The stop reason of the thread should be watchpoint.
  90         self.expect("thread backtrace", STOPPED_DUE_TO_WATCHPOINT,
  91                     substrs=['stop reason = watchpoint'])
  92         self.expect("frame variable --show-globals global",
  93                     substrs=['(int32_t)', 'global = 5'])
  94
  95         # Use the '-v' option to do verbose listing of the watchpoint.
  96         # The hit count should now be 2.
  97         self.expect("watchpoint list -v",
  98                     substrs=['hit_count = 5'])