Add test cases for SBValue.Cast(SBType). The test logic needs more polishing.
llvm-svn: 149741
diff --git a/lldb/test/lang/cpp/dynamic-value/TestCppValueCast.py b/lldb/test/lang/cpp/dynamic-value/TestCppValueCast.py
new file mode 100644
index 0000000..44da4d4
--- /dev/null
+++ b/lldb/test/lang/cpp/dynamic-value/TestCppValueCast.py
@@ -0,0 +1,126 @@
+"""
+Test lldb Python API SBValue::Cast(SBType) for C++ types.
+"""
+
+import os, time
+import re
+import unittest2
+import lldb, lldbutil
+from lldbtest import *
+
+class CppValueCastTestCase(TestBase):
+
+ mydir = os.path.join("lang", "cpp", "dynamic-value")
+
+ @unittest2.skipUnless(sys.platform.startswith("darwin"), "requires Darwin")
+ @python_api_test
+ def test_value_cast_with_dsym(self):
+ """Test SBValue::Cast(SBType) API for C++ types."""
+ self.buildDsym(dictionary=self.d)
+ self.do_sbvalue_cast(self.exe_name)
+
+ @python_api_test
+ def test_get_dynamic_vals_with_dwarf(self):
+ """Test SBValue::Cast(SBType) API for C++ types."""
+ self.buildDwarf(dictionary=self.d)
+ self.do_sbvalue_cast(self.exe_name)
+
+ def setUp(self):
+ # Call super's setUp().
+ TestBase.setUp(self)
+
+ # Find the line number to break for main.c.
+ self.source = 'sbvalue-cast.cpp';
+ self.line = line_number(self.source, '// Set breakpoint here.')
+ self.exe_name = self.testMethodName
+ self.d = {'CXX_SOURCES': self.source, 'EXE': self.exe_name}
+
+ def do_sbvalue_cast (self, exe_name):
+ """Test SBValue::Cast(SBType) API for C++ types."""
+ exe = os.path.join(os.getcwd(), exe_name)
+
+ # Create a target from the debugger.
+
+ target = self.dbg.CreateTarget (exe)
+ self.assertTrue(target, VALID_TARGET)
+
+ # Set up our breakpoints:
+
+ breakpoint = target.BreakpointCreateByLocation(self.source, self.line)
+ self.assertTrue(breakpoint, VALID_BREAKPOINT)
+
+ # Now launch the process, and do not stop at the entry point.
+ process = target.LaunchSimple (None, None, os.getcwd())
+
+ self.assertTrue(process.GetState() == lldb.eStateStopped,
+ PROCESS_STOPPED)
+
+ # Find DerivedA and DerivedB types.
+ typeA = target.FindFirstType('DerivedA')
+ typeB = target.FindFirstType('DerivedB')
+ self.DebugSBType(typeA)
+ self.DebugSBType(typeB)
+ self.assertTrue(typeA)
+ self.assertTrue(typeB)
+ error = lldb.SBError()
+
+ # First stop is for DerivedA instance.
+ threads = lldbutil.get_threads_stopped_at_breakpoint (process, breakpoint)
+ self.assertTrue (len(threads) == 1)
+ thread = threads[0]
+ frame0 = thread.GetFrameAtIndex(0)
+
+ tellerA = frame0.FindVariable('teller', lldb.eNoDynamicValues)
+ self.DebugSBValue(tellerA)
+ self.assertTrue(tellerA.GetChildMemberWithName('m_base_val').GetValueAsUnsigned(error, 0) == 20)
+
+ if self.TraceOn():
+ for child in tellerA:
+ print "child name:", child.GetName()
+ print child
+
+ # Call SBValue.Cast() to obtain instanceA.
+ instanceA = tellerA.Cast(typeA.GetPointerType())
+ self.DebugSBValue(instanceA)
+
+ # These outputs don't look correct?
+ if self.TraceOn():
+ for child in instanceA:
+ print "child name:", child.GetName()
+ print child
+ a_member_val = instanceA.GetChildMemberWithName('m_a_val')
+ self.DebugSBValue(a_member_val)
+
+ # Second stop is for DerivedB instance.
+ threads = lldbutil.continue_to_breakpoint (process, breakpoint)
+ self.assertTrue (len(threads) == 1)
+ thread = threads[0]
+ frame0 = thread.GetFrameAtIndex(0)
+
+ tellerB = frame0.FindVariable('teller', lldb.eNoDynamicValues)
+ self.DebugSBValue(tellerB)
+ self.assertTrue(tellerB.GetChildMemberWithName('m_base_val').GetValueAsUnsigned(error, 0) == 12)
+
+ if self.TraceOn():
+ for child in tellerB:
+ print "child name:", child.GetName()
+ print child
+
+ # Call SBValue.Cast() to obtain instanceB.
+ instanceB = tellerB.Cast(typeB.GetPointerType())
+ self.DebugSBValue(instanceB)
+
+ # These outputs don't look correct?
+ if self.TraceOn():
+ for child in instanceB:
+ print "child name:", child.GetName()
+ print child
+ b_member_val = instanceB.GetChildMemberWithName('m_b_val')
+ self.DebugSBValue(b_member_val)
+
+
+if __name__ == '__main__':
+ import atexit
+ lldb.SBDebugger.Initialize()
+ atexit.register(lambda: lldb.SBDebugger.Terminate())
+ unittest2.main()