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1"""
2Test thread stepping features in combination with frame select.
3"""
4
5
6
7import lldb
8from lldbsuite.test.lldbtest import *
9import lldbsuite.test.lldbutil as lldbutil
10
11
12class ThreadSteppingTestCase(TestBase):
13
14    mydir = TestBase.compute_mydir(__file__)
15
16    def setUp(self):
17        # Call super's setUp().
18        TestBase.setUp(self)
19        # Find the line number to of function 'c'.
20        self.line1 = line_number(
21            'main.c', '// Find the line number of function "c" here.')
22        self.line2 = line_number(
23            'main.c', '// frame select 2, thread step-out while stopped at "c(1)"')
24        self.line3 = line_number(
25            'main.c', '// thread step-out while stopped at "c(2)"')
26        self.line4 = line_number(
27            'main.c', '// frame select 1, thread step-out while stopped at "c(3)"')
28
29    def test_step_out_with_run_command(self):
30        """Exercise thread step-out and frame select followed by thread step-out."""
31        self.build()
32        exe = self.getBuildArtifact("a.out")
33        self.runCmd("file " + exe, CURRENT_EXECUTABLE_SET)
34
35        # Create a breakpoint inside function 'c'.
36        lldbutil.run_break_set_by_file_and_line(
37            self, "main.c", self.line1, num_expected_locations=1, loc_exact=True)
38
39        # Now run the program.
40        self.runCmd("run", RUN_SUCCEEDED)
41
42        # The process should be stopped at this point.
43        self.expect("process status", PROCESS_STOPPED,
44                    patterns=['Process .* stopped'])
45
46        # The frame #0 should correspond to main.c:32, the executable statement
47        # in function name 'c'.  And frame #3 should point to main.c:37.
48        self.expect("thread backtrace", STOPPED_DUE_TO_BREAKPOINT,
49                    substrs=["stop reason = breakpoint"],
50                    patterns=["frame #0.*main.c:%d" % self.line1,
51                              "frame #3.*main.c:%d" % self.line2])
52
53        # We want to move the pc to frame #3.  This can be accomplished by
54        # 'frame select 2', followed by 'thread step-out'.
55        self.runCmd("frame select 2")
56        self.runCmd("thread step-out")
57        self.expect("thread backtrace", STEP_OUT_SUCCEEDED,
58                    substrs=["stop reason = step out"],
59                    patterns=["frame #0.*main.c:%d" % self.line2])
60
61        # Let's move on to a single step-out case.
62        self.runCmd("process continue")
63
64        # The process should be stopped at this point.
65        self.expect("process status", PROCESS_STOPPED,
66                    patterns=['Process .* stopped'])
67        self.runCmd("thread step-out")
68        self.expect("thread backtrace", STEP_OUT_SUCCEEDED,
69                    substrs=["stop reason = step out"],
70                    patterns=["frame #0.*main.c:%d" % self.line3])
71
72        # Do another frame selct, followed by thread step-out.
73        self.runCmd("process continue")
74
75        # The process should be stopped at this point.
76        self.expect("process status", PROCESS_STOPPED,
77                    patterns=['Process .* stopped'])
78        self.runCmd("frame select 1")
79        self.runCmd("thread step-out")
80        self.expect("thread backtrace", STEP_OUT_SUCCEEDED,
81                    substrs=["stop reason = step out"],
82                    patterns=["frame #0.*main.c:%d" % self.line4])
83