Adding upstream version 4:7.4.7.upstream/4%7.4.7upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 115 insertions, 0 deletions

diff --git a/sal/qa/rtl/ref/rtl_ref.cxx b/sal/qa/rtl/ref/rtl_ref.cxx
new file mode 100644
index 000000000..2bf7c9803
--- /dev/null
+++ b/sal/qa/rtl/ref/rtl_ref.cxx
@@ -0,0 +1,115 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ */
+
+#include <rtl/ref.hxx>
+#include <sal/types.h>
+#include <cppunit/TestFixture.h>
+#include <cppunit/extensions/HelperMacros.h>
+#include <cppunit/plugin/TestPlugIn.h>
+
+namespace rtl_ref
+{
+
+namespace {
+
+class MoveTestClass
+{
+private:
+    bool m_bIncFlag;
+    long m_nRef;
+public:
+    MoveTestClass(): m_bIncFlag(false), m_nRef(0) { }
+
+    // There should never be more than two references to this class as it
+    // is used as a test class for move functions. One reference being the
+    // original reference and the second being the test reference
+    void acquire()
+    {
+        if(m_bIncFlag)
+        {
+            ++m_nRef;
+            m_bIncFlag = false;
+        }
+        else
+            CPPUNIT_FAIL("RC was incremented when in should not have been");
+    }
+
+    void release() { --m_nRef; }
+
+    long use_count() { return m_nRef; }
+
+    void set_inc_flag() { m_bIncFlag = true; }
+};
+
+}
+
+static rtl::Reference< MoveTestClass > get_reference( MoveTestClass* pcTestClass )
+{
+    // constructor will increment the reference count
+    pcTestClass->set_inc_flag();
+    rtl::Reference< MoveTestClass > tmp(pcTestClass);
+    return tmp;
+}
+
+class TestReferenceRefCounting : public CppUnit::TestFixture
+{
+    void testMove()
+    {
+        MoveTestClass cTestClass;
+
+        // constructor will increment the reference count
+        cTestClass.set_inc_flag();
+        rtl::Reference< MoveTestClass > test1( &cTestClass );
+
+        // move should not increment the reference count
+        rtl::Reference< MoveTestClass > test2( std::move(test1) );
+        CPPUNIT_ASSERT_EQUAL_MESSAGE("test2.use_count() == 1",
+                               static_cast<long>(1), test2->use_count());
+
+        // test1 now contains a null pointer
+        CPPUNIT_ASSERT_MESSAGE("!test1.is()",
+                               !test1.is()); // NOLINT(bugprone-use-after-move)
+
+        // function return should move the reference
+        test2 = get_reference( &cTestClass );
+        CPPUNIT_ASSERT_EQUAL_MESSAGE("test2.use_count() == 1",
+                               static_cast<long>(1), test2->use_count());
+
+        // normal copy
+        test2->set_inc_flag();
+        test1 = test2;
+        CPPUNIT_ASSERT_EQUAL_MESSAGE("test2.use_count() == 2",
+                               static_cast<long>(2), test2->use_count());
+
+        // use count should decrement
+        test2 = rtl::Reference< MoveTestClass >();
+        CPPUNIT_ASSERT_EQUAL_MESSAGE("test1.use_count() == 1",
+                               static_cast<long>(1), test1->use_count());
+
+        // move of a null pointer should not cause an error
+        test1 = std::move(test2);
+
+        CPPUNIT_ASSERT_MESSAGE("!test1.is()",
+                               !test1.is());
+        CPPUNIT_ASSERT_MESSAGE("!test2.is()",
+                               !test2.is()); // NOLINT(bugprone-use-after-move)
+
+        CPPUNIT_ASSERT_EQUAL_MESSAGE("cTestClass.use_count() == 0",
+                               static_cast<long>(0), cTestClass.use_count());
+    }
+
+    CPPUNIT_TEST_SUITE(TestReferenceRefCounting);
+    CPPUNIT_TEST(testMove);
+    CPPUNIT_TEST_SUITE_END();
+};
+
+} // namespace rtl_ref
+CPPUNIT_TEST_SUITE_REGISTRATION(rtl_ref::TestReferenceRefCounting);
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */