1 files changed, 90 insertions, 0 deletions
diff --git a/packages/Python/lldbsuite/test/lang/cpp/virtual/TestVirtual.py b/packages/Python/lldbsuite/test/lang/cpp/virtual/TestVirtual.py
new file mode 100644
index 0000000..1553a43
--- /dev/null
+++ b/packages/Python/lldbsuite/test/lang/cpp/virtual/TestVirtual.py
@@ -0,0 +1,90 @@
+"""
+Test C++ virtual function and virtual inheritance.
+"""
+
+from __future__ import print_function
+
+import os, time
+import re
+import lldb
+from lldbsuite.test.lldbtest import *
+import lldbsuite.test.lldbutil as lldbutil
+
+def Msg(expr, val):
+    return "'expression %s' matches the output (from compiled code): %s" % (expr, val)
+
+class CppVirtualMadness(TestBase):
+
+    mydir = TestBase.compute_mydir(__file__)
+
+    # This is the pattern by design to match the "my_expr = 'value'" output from
+    # printf() stmts (see main.cpp).
+    pattern = re.compile("^([^=]*) = '([^=]*)'$")
+
+    # Assert message.
+    PRINTF_OUTPUT_GROKKED = "The printf output from compiled code is parsed correctly"
+
+    def setUp(self):
+        # Call super's setUp().
+        TestBase.setUp(self)
+        # Find the line number to break for main.cpp.
+        self.source = 'main.cpp'
+        self.line = line_number(self.source, '// Set first breakpoint here.')
+
+    @expectedFailureIcc('llvm.org/pr16808') # lldb does not call the correct virtual function with icc
+    @expectedFailureAll(oslist=['windows'])
+    def test_virtual_madness(self):
+        """Test that expression works correctly with virtual inheritance as well as virtual function."""
+        self.build()
+
+        # Bring the program to the point where we can issue a series of
+        # 'expression' command to compare against the golden output.
+        self.dbg.SetAsync(False)
+        
+        # Create a target by the debugger.
+        target = self.dbg.CreateTarget("a.out")
+        self.assertTrue(target, VALID_TARGET)
+
+        # Create the breakpoint inside function 'main'.
+        breakpoint = target.BreakpointCreateByLocation(self.source, self.line)
+        self.assertTrue(breakpoint, VALID_BREAKPOINT)
+
+        # Now launch the process, and do not stop at entry point.
+        process = target.LaunchSimple (None, None, self.get_process_working_directory())
+        self.assertTrue(process, PROCESS_IS_VALID)
+        
+        self.assertTrue(process.GetState() == lldb.eStateStopped)
+        thread = lldbutil.get_stopped_thread(process, lldb.eStopReasonBreakpoint)
+        self.assertTrue(thread.IsValid(), "There should be a thread stopped due to breakpoint condition")
+
+        # First, capture the golden output from the program itself from the
+        # series of printf statements.
+        stdout = process.GetSTDOUT(1024)
+        
+        self.assertIsNotNone(stdout, "Encountered an error reading the process's output")
+
+        # This golden list contains a list of "my_expr = 'value' pairs extracted
+        # from the golden output.
+        gl = []
+
+        # Scan the golden output line by line, looking for the pattern:
+        #
+        #     my_expr = 'value'
+        #
+        for line in stdout.split(os.linesep):
+            match = self.pattern.search(line)
+            if match:
+                my_expr, val = match.group(1), match.group(2)
+                gl.append((my_expr, val))
+        #print("golden list:", gl)
+
+        # Now iterate through the golden list, comparing against the output from
+        # 'expression var'.
+        for my_expr, val in gl:
+
+            self.runCmd("expression %s" % my_expr)
+            output = self.res.GetOutput()
+            
+            # The expression output must match the oracle.
+            self.expect(output, Msg(my_expr, val), exe=False,
+                substrs = [val])