caio/clang-p2996
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Introduce a PythonExceptionState class.

Browse Source 
This is a helper class which supports a number of
features including exception to string formatting with
backtrace handling and auto-restore of exception state
upon scope exit.

Additionally, unit tests are included to verify the
feature set of the class.

llvm-svn: 252994
This commit is contained in:
Zachary Turner
2015-11-13 01:24:52 +00:00
parent c946d46283
commit 3946247caf
6 changed files with 385 additions and 85 deletions
Download Patch File Download Diff File Expand all files Collapse all files

121
lldb/unittests/ScriptInterpreter/Python/PythonExceptionStateTests.cpp Normal file
View File

@@ -0,0 +1,121 @@
//===-- PythonExceptionStateTest.cpp ------------------------------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#include "gtest/gtest.h"
#include "Plugins/ScriptInterpreter/Python/lldb-python.h"
#include "Plugins/ScriptInterpreter/Python/PythonDataObjects.h"
#include "Plugins/ScriptInterpreter/Python/PythonExceptionState.h"
#include "Plugins/ScriptInterpreter/Python/ScriptInterpreterPython.h"
#include "PythonTestSuite.h"
using namespace lldb_private;
class PythonExceptionStateTest : public PythonTestSuite
{
public:
protected:
void
RaiseException()
{
PyErr_SetString(PyExc_RuntimeError, "PythonExceptionStateTest test error");
}
};
TEST_F(PythonExceptionStateTest, TestExceptionStateChecking)
{
PyErr_Clear();
EXPECT_FALSE(PythonExceptionState::HasErrorOccurred());
RaiseException();
EXPECT_TRUE(PythonExceptionState::HasErrorOccurred());
PyErr_Clear();
}
TEST_F(PythonExceptionStateTest, TestAcquisitionSemantics)
{
PyErr_Clear();
PythonExceptionState no_error(false);
EXPECT_FALSE(no_error.IsError());
EXPECT_FALSE(PythonExceptionState::HasErrorOccurred());
PyErr_Clear();
RaiseException();
PythonExceptionState error(false);
EXPECT_TRUE(error.IsError());
EXPECT_FALSE(PythonExceptionState::HasErrorOccurred());
error.Discard();
PyErr_Clear();
RaiseException();
error.Acquire(false);
EXPECT_TRUE(error.IsError());
EXPECT_FALSE(PythonExceptionState::HasErrorOccurred());
PyErr_Clear();
}
TEST_F(PythonExceptionStateTest, TestDiscardSemantics)
{
PyErr_Clear();
// Test that discarding an exception does not restore the exception
// state even when auto-restore==true is set
RaiseException();
PythonExceptionState error(true);
EXPECT_TRUE(error.IsError());
EXPECT_FALSE(PythonExceptionState::HasErrorOccurred());
error.Discard();
EXPECT_FALSE(error.IsError());
EXPECT_FALSE(PythonExceptionState::HasErrorOccurred());
}
TEST_F(PythonExceptionStateTest, TestManualRestoreSemantics)
{
PyErr_Clear();
RaiseException();
PythonExceptionState error(false);
EXPECT_TRUE(error.IsError());
EXPECT_FALSE(PythonExceptionState::HasErrorOccurred());
error.Restore();
EXPECT_FALSE(error.IsError());
EXPECT_TRUE(PythonExceptionState::HasErrorOccurred());
PyErr_Clear();
}
TEST_F(PythonExceptionStateTest, TestAutoRestoreSemantics)
{
PyErr_Clear();
// Test that using the auto-restore flag correctly restores the exception
// state on destruction, and not using the auto-restore flag correctly
// does NOT restore the state on destruction.
{
RaiseException();
PythonExceptionState error(false);
EXPECT_TRUE(error.IsError());
EXPECT_FALSE(PythonExceptionState::HasErrorOccurred());
}
EXPECT_FALSE(PythonExceptionState::HasErrorOccurred());
PyErr_Clear();
{
RaiseException();
PythonExceptionState error(true);
EXPECT_TRUE(error.IsError());
EXPECT_FALSE(PythonExceptionState::HasErrorOccurred());
}
EXPECT_TRUE(PythonExceptionState::HasErrorOccurred());
PyErr_Clear();
}