TestConvenienceVariables.py revision 6033bedc163bc57b5e5c3c1aee8ba81f64b4f11e 
1"""Test convenience variables when you drop in from lldb prompt into an embedded interpreter."""
2
3import os
4import unittest2
5import lldb
6import pexpect
7from lldbtest import *
8
9class ConvenienceVariablesCase(TestBase):
10
11    mydir = os.path.join("functionalities", "embedded_interpreter")
12
13    @unittest2.skipUnless(sys.platform.startswith("darwin"), "requires Darwin")
14    def test_with_dsym_and_run_command(self):
15        """Test convenience variables lldb.debugger, lldb.target, lldb.process, lldb.thread, and lldb.frame."""
16        self.buildDsym()
17        self.convenience_variables()
18
19    def test_with_dwarf_and_run_commands(self):
20        """Test convenience variables lldb.debugger, lldb.target, lldb.process, lldb.thread, and lldb.frame."""
21        self.buildDwarf()
22        self.convenience_variables()
23
24    def setUp(self):
25        # Call super's setUp().
26        TestBase.setUp(self)
27        # Find the line number to break on inside main.cpp.
28        self.line = line_number('main.c', 'Hello world.')
29
30    def convenience_variables(self):
31        """Test convenience variables lldb.debugger, lldb.target, lldb.process, lldb.thread, and lldb.frame."""
32        exe = os.path.join(os.getcwd(), "a.out")
33        prompt = "(lldb) "
34        python_prompt = ">>> "
35
36        # So that the child gets torn down after the test.
37        self.child = pexpect.spawn('%s %s' % (self.lldbHere, exe))
38        child = self.child
39        # Turn on logging for what the child sends back.
40        if self.TraceOn():
41            child.logfile_read = sys.stdout
42
43        # Set the breakpoint, run the inferior, when it breaks, issue print on
44        # the various convenience variables.
45        child.expect_exact(prompt)
46        child.sendline('breakpoint set -f main.c -l %d' % self.line)
47        child.expect_exact(prompt)
48        child.sendline('run')
49        child.expect_exact(prompt)
50        child.sendline('script')
51        child.expect_exact(python_prompt)
52
53        # Set a flag so that we know during teardown time, we need to exit the
54        # Python interpreter, then the lldb interpreter.
55        self.child_in_script_interpreter = True
56
57        child.sendline('print lldb.debugger')
58        child.expect_exact(python_prompt)
59        self.expect(child.before, exe=False,
60            patterns = ['Debugger \(instance: .*, id: \d\)'])
61
62        child.sendline('print lldb.target')
63        child.expect_exact(python_prompt)
64        self.expect(child.before, exe=False,
65            substrs = ['a.out'])
66
67        child.sendline('print lldb.process')
68        child.expect_exact(python_prompt)
69        self.expect(child.before, exe=False,
70            patterns = ['SBProcess: pid = \d+, state = stopped, threads = \d, executable = a.out'])
71
72        child.sendline('print lldb.thread')
73        child.expect_exact(python_prompt)
74        self.expect(child.before, exe=False,
75            patterns = ['SBThread: tid = 0x[0-9a-f]+'])
76
77        child.sendline('print lldb.frame')
78        child.expect_exact(python_prompt)
79        self.expect(child.before, exe=False,
80            substrs = ['frame #0', 'main.c:%d' % self.line])
81
82
83if __name__ == '__main__':
84    import atexit
85    lldb.SBDebugger.Initialize()
86    atexit.register(lambda: lldb.SBDebugger.Terminate())
87    unittest2.main()
88