LLDB test suite should also output the config info string along with the stack trace.

rdar://problem/11283401

Example:

Collected 1 test

1: test_with_dwarf (TestCallStdStringFunction.ExprCommandCallFunctionTestCase)
   Test calling std::String member function. ... FAIL

======================================================================
FAIL: test_with_dwarf (TestCallStdStringFunction.ExprCommandCallFunctionTestCase)
   Test calling std::String member function.
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/Volumes/data/lldb/svn/ToT/test/lldbtest.py", line 427, in wrapper
    return func(self, *args, **kwargs)
  File "/Volumes/data/lldb/svn/ToT/test/expression_command/call-function/TestCallStdStringFunction.py", line 34, in test_with_dwarf
    self.call_function()
  File "/Volumes/data/lldb/svn/ToT/test/expression_command/call-function/TestCallStdStringFunction.py", line 48, in call_function
    substrs = ['Hello world'])
  File "/Volumes/data/lldb/svn/ToT/test/lldbtest.py", line 1235, in expect
    msg if msg else EXP_MSG(str, exe))
AssertionError: False is not True : 'Hello world' returns expected result
Config=i386-clang
----------------------------------------------------------------------
Ran 1 test in 1.148s

FAILED (failures=1)

llvm-svn: 155157

lldb/test/dotest.py

@@ -1262,6 +1262,14 @@ for ia in range(len(archs) if iterArchs else 1):
                 # This counts from 1 .. suite.countTestCases().
                 self.counter = 0
 
+            def _exc_info_to_string(self, err, test):
+                """Overrides superclass TestResult's method in order to append
+                our test config info string to the exception info string."""
+                modified_exc_string = '%sConfig=%s-%s' % (super(LLDBTestResult, self)._exc_info_to_string(err, test),
+                                                          test.getArchitecture(),
+                                                          test.getCompiler())
+                return modified_exc_string
+
             def getDescription(self, test):
                 doc_first_line = test.shortDescription()
                 if self.descriptions and doc_first_line: