lldb/test/API/commands/watchpoints/watchpoint_commands/condition/TestWatchpointConditionCmd.py

   1 """
   2 Test watchpoint modify command to set condition on a watchpoint.
   3 """
   4
   5
   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 WatchpointConditionCmdTestCase(TestBase):
  13     NO_DEBUG_INFO_TESTCASE = True
  14
  15     def setUp(self):
  16         # Call super's setUp().
  17         TestBase.setUp(self)
  18         # Our simple source filename.
  19         self.source = "main.cpp"
  20         # Find the line number to break inside main().
  21         self.line = line_number(self.source, "// Set break point at this line.")
  22         # And the watchpoint variable declaration line number.
  23         self.decl = line_number(self.source, "// Watchpoint variable declaration.")
  24         # Build dictionary to have unique executable names for each test
  25         # method.
  26         self.exe_name = self.testMethodName
  27         self.d = {"CXX_SOURCES": self.source, "EXE": self.exe_name}
  28
  29     def test_watchpoint_cond(self):
  30         """Test watchpoint condition."""
  31         self.build(dictionary=self.d)
  32         self.setTearDownCleanup(dictionary=self.d)
  33
  34         exe = self.getBuildArtifact(self.exe_name)
  35         self.runCmd("file " + exe, CURRENT_EXECUTABLE_SET)
  36
  37         # Add a breakpoint to set a watchpoint when stopped on the breakpoint.
  38         lldbutil.run_break_set_by_file_and_line(
  39             self, None, self.line, num_expected_locations=1
  40         )
  41
  42         # Run the program.
  43         self.runCmd("run", RUN_SUCCEEDED)
  44
  45         # We should be stopped again due to the breakpoint.
  46         # The stop reason of the thread should be breakpoint.
  47         self.expect(
  48             "thread list",
  49             STOPPED_DUE_TO_BREAKPOINT,
  50             substrs=["stopped", "stop reason = breakpoint"],
  51         )
  52
  53         # Now let's set a write-type watchpoint for 'global'.
  54         # With a condition of 'global==5'.
  55         self.expect(
  56             "watchpoint set variable -w write global",
  57             WATCHPOINT_CREATED,
  58             substrs=[
  59                 "Watchpoint created",
  60                 "size = 4",
  61                 "type = w",
  62                 "%s:%d" % (self.source, self.decl),
  63             ],
  64         )
  65
  66         self.runCmd("watchpoint modify -c 'global==5'")
  67
  68         # Use the '-v' option to do verbose listing of the watchpoint.
  69         # The hit count should be 0 initially.
  70         self.expect("watchpoint list -v", substrs=["global==5", "hit_count = 0"])
  71
  72         self.runCmd("process continue")
  73
  74         # We should be stopped again due to the watchpoint (write type).
  75         # The stop reason of the thread should be watchpoint.
  76         self.expect(
  77             "thread backtrace",
  78             STOPPED_DUE_TO_WATCHPOINT,
  79             substrs=["stop reason = watchpoint"],
  80         )
  81         self.expect(
  82             "frame variable --show-globals global", substrs=["(int32_t)", "global = 5"]
  83         )
  84
  85         # Use the '-v' option to do verbose listing of the watchpoint.
  86         # The hit count should now be 2.
  87         self.expect("watchpoint list -v", substrs=["hit_count = 1"])