Don't allow SBValue::Cast to cast from a smaller type to a larger,

as we don't in general know where the extra data should come from.

Differential Revision: https://reviews.llvm.org/D153657

1 files changed, 11 insertions, 0 deletions

diff --git a/lldb/packages/Python/lldbsuite/test/lldbtest.py b/lldb/packages/Python/lldbsuite/test/lldbtest.py
index a712f6b..2bff1a7 100644
--- a/lldb/packages/Python/lldbsuite/test/lldbtest.py
+++ b/lldb/packages/Python/lldbsuite/test/lldbtest.py
@@ -2604,6 +2604,17 @@ FileCheck output:
         if not obj.Success():
             error = obj.GetCString()
             self.fail(self._formatMessage(msg, "'{}' is not success".format(error)))
+    """Assert that an lldb.SBError is in the "failure" state."""
+
+    def assertFailure(self, obj, error_str = None, msg=None):
+        if obj.Success():
+            self.fail(self._formatMessage(msg, "Error not in a fail state"))
+
+        if error_str == None:
+            return
+                      
+        error = obj.GetCString()
+        self.assertEqual(error, error_str, msg)
 
     """Assert that a command return object is successful"""