test/expression_command/call-function/TestCallStdStringFunction.py

"""
Test calling std::String member functions.
"""

import unittest2
import lldb
import lldbutil
from lldbtest import *

class ExprCommandCallFunctionTestCase(TestBase):

    mydir = TestBase.compute_mydir(__file__)

    def setUp(self):
        # Call super's setUp().
        TestBase.setUp(self)
        # Find the line number to break for main.c.
        self.line = line_number('main.cpp',
                                '// Please test these expressions while stopped at this line:')

    @unittest2.skipUnless(sys.platform.startswith("darwin"), "requires Darwin")
    @dsym_test
    @expectedFailureDarwin(16361880) # <rdar://problem/16361880>, we get the result correctly, but fail to invoke the Summary formatter.
    def test_with_dsym(self):
        """Test calling std::String member function."""
        self.buildDsym()
        self.call_function()

    @dwarf_test
    @expectedFailureFreeBSD('llvm.org/pr17807') # Fails on FreeBSD buildbot
    @expectedFailureGcc # llvm.org/pr14437, fails with GCC 4.6.3 and 4.7.2
    @expectedFailureIcc # llvm.org/pr14437, fails with ICC 13.1
    @expectedFailureDarwin(16361880) # <rdar://problem/16361880>, we get the result correctly, but fail to invoke the Summary formatter.
    def test_with_dwarf(self):
        """Test calling std::String member function."""
        self.buildDwarf()
        self.call_function()

    def call_function(self):
        """Test calling std::String member function."""
        self.runCmd("file a.out", CURRENT_EXECUTABLE_SET)

        # Some versions of GCC encode two locations for the 'return' statement in main.cpp
        lldbutil.run_break_set_by_file_and_line (self, "main.cpp", self.line, num_expected_locations=-1, loc_exact=True)

        self.runCmd("run", RUN_SUCCEEDED)

        self.expect("print str",
            substrs = ['Hello world'])

        # Calling this function now succeeds, but we follow the typedef return type through to
        # const char *, and thus don't invoke the Summary formatter.
        self.expect("print str.c_str()",
            substrs = ['Hello world'])

if __name__ == '__main__':
    import atexit
    lldb.SBDebugger.Initialize()
    atexit.register(lambda: lldb.SBDebugger.Terminate())
    unittest2.main()