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      1 """Test convenience variables when you drop in from lldb prompt into an embedded interpreter."""
      2 
      3 import os
      4 import unittest2
      5 import lldb
      6 import pexpect
      7 from lldbtest import *
      8 
      9 class ConvenienceVariablesCase(TestBase):
     10 
     11     mydir = os.path.join("functionalities", "embedded_interpreter")
     12 
     13     @unittest2.skipUnless(sys.platform.startswith("darwin"), "requires Darwin")
     14     @dsym_test
     15     def test_with_dsym_and_run_command(self):
     16         """Test convenience variables lldb.debugger, lldb.target, lldb.process, lldb.thread, and lldb.frame."""
     17         self.buildDsym()
     18         self.convenience_variables()
     19 
     20     @dwarf_test
     21     @skipIfLinux # llvm.org/pr14637: this test case fails sometimes because the input prompt "(lldb)" is missing
     22     def test_with_dwarf_and_run_commands(self):
     23         """Test convenience variables lldb.debugger, lldb.target, lldb.process, lldb.thread, and lldb.frame."""
     24         self.buildDwarf()
     25         self.convenience_variables()
     26 
     27     def setUp(self):
     28         # Call super's setUp().
     29         TestBase.setUp(self)
     30         # Find the line number to break on inside main.cpp.
     31         self.line = line_number('main.c', 'Hello world.')
     32 
     33     def convenience_variables(self):
     34         """Test convenience variables lldb.debugger, lldb.target, lldb.process, lldb.thread, and lldb.frame."""
     35         exe = os.path.join(os.getcwd(), "a.out")
     36         prompt = "(lldb) "
     37         python_prompt = ">>> "
     38 
     39         # So that the child gets torn down after the test.
     40         self.child = pexpect.spawn('%s %s %s' % (self.lldbHere, self.lldbOption, exe))
     41         child = self.child
     42         # Turn on logging for what the child sends back.
     43         if self.TraceOn():
     44             child.logfile_read = sys.stdout
     45 
     46         # Set the breakpoint, run the inferior, when it breaks, issue print on
     47         # the various convenience variables.
     48         child.expect_exact(prompt)
     49         child.sendline('breakpoint set -f main.c -l %d' % self.line)
     50         child.expect_exact(prompt)
     51         child.sendline('run')
     52         child.expect_exact(prompt)
     53         child.sendline('script')
     54         child.expect_exact(python_prompt)
     55 
     56         # Set a flag so that we know during teardown time, we need to exit the
     57         # Python interpreter, then the lldb interpreter.
     58         self.child_in_script_interpreter = True
     59 
     60         child.sendline('print lldb.debugger')
     61         child.expect_exact(python_prompt)
     62         self.expect(child.before, exe=False,
     63             patterns = ['Debugger \(instance: .*, id: \d\)'])
     64 
     65         child.sendline('print lldb.target')
     66         child.expect_exact(python_prompt)
     67         self.expect(child.before, exe=False,
     68             substrs = ['a.out'])
     69 
     70         child.sendline('print lldb.process')
     71         child.expect_exact(python_prompt)
     72         self.expect(child.before, exe=False,
     73             patterns = ['SBProcess: pid = \d+, state = stopped, threads = \d, executable = a.out'])
     74 
     75         child.sendline('print lldb.thread')
     76         child.expect_exact(python_prompt)
     77         self.expect(child.before, exe=False,
     78             patterns = ['SBThread: tid = 0x[0-9a-f]+'])
     79 
     80         child.sendline('print lldb.frame')
     81         child.expect_exact(python_prompt)
     82         self.expect(child.before, exe=False,
     83             substrs = ['frame #0', 'main.c:%d' % self.line])
     84 
     85 
     86 if __name__ == '__main__':
     87     import atexit
     88     lldb.SBDebugger.Initialize()
     89     atexit.register(lambda: lldb.SBDebugger.Terminate())
     90     unittest2.main()
     91