1"""
2Test watchpoint modify command to set condition on a watchpoint.
3"""
4
5
6
7import lldb
8from lldbsuite.test.decorators import *
9from lldbsuite.test.lldbtest import *
10from lldbsuite.test import lldbutil
11
12
13class WatchpointConditionCmdTestCase(TestBase):
14    NO_DEBUG_INFO_TESTCASE = True
15
16    def setUp(self):
17        # Call super's setUp().
18        TestBase.setUp(self)
19        # Our simple source filename.
20        self.source = 'main.cpp'
21        # Find the line number to break inside main().
22        self.line = line_number(
23            self.source, '// Set break point at this line.')
24        # And the watchpoint variable declaration line number.
25        self.decl = line_number(self.source,
26                                '// Watchpoint variable declaration.')
27        # Build dictionary to have unique executable names for each test
28        # method.
29        self.exe_name = self.testMethodName
30        self.d = {'CXX_SOURCES': self.source, 'EXE': self.exe_name}
31
32    def test_watchpoint_cond(self):
33        """Test watchpoint condition."""
34        self.build(dictionary=self.d)
35        self.setTearDownCleanup(dictionary=self.d)
36
37        exe = self.getBuildArtifact(self.exe_name)
38        self.runCmd("file " + exe, CURRENT_EXECUTABLE_SET)
39
40        # Add a breakpoint to set a watchpoint when stopped on the breakpoint.
41        lldbutil.run_break_set_by_file_and_line(
42            self, None, self.line, num_expected_locations=1)
43
44        # Run the program.
45        self.runCmd("run", RUN_SUCCEEDED)
46
47        # We should be stopped again due to the breakpoint.
48        # The stop reason of the thread should be breakpoint.
49        self.expect("thread list", STOPPED_DUE_TO_BREAKPOINT,
50                    substrs=['stopped',
51                             'stop reason = breakpoint'])
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' %
63                (self.source,
64                 self.decl)])
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",
71                    substrs=['global==5', 'hit_count = 0'])
72
73        self.runCmd("process continue")
74
75        # We should be stopped again due to the watchpoint (write type).
76        # The stop reason of the thread should be watchpoint.
77        self.expect("thread backtrace", STOPPED_DUE_TO_WATCHPOINT,
78                    substrs=['stop reason = watchpoint'])
79        self.expect("frame variable --show-globals global",
80                    substrs=['(int32_t)', 'global = 5'])
81
82        # Use the '-v' option to do verbose listing of the watchpoint.
83        # The hit count should now be 2.
84        self.expect("watchpoint list -v",
85                    substrs=['hit_count = 5'])
86