1 files changed, 78 insertions, 0 deletions
diff --git a/sal/qa/systools/test_retry_if_failed.cxx b/sal/qa/systools/test_retry_if_failed.cxx
new file mode 100644
index 000000000..a218b3e9f
--- /dev/null
+++ b/sal/qa/systools/test_retry_if_failed.cxx
@@ -0,0 +1,78 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4; fill-column: 100 -*- */
+/*
+ * 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 <cppunit/extensions/HelperMacros.h>
+#include <cppunit/plugin/TestPlugIn.h>
+#include <systools/win32/retry_if_failed.hxx>
+
+namespace test_systools
+{
+constexpr int ClockRes = 15; // default interval between system clock ticks is ~15 ms on x86
+
+class test_retry_if_failed : public CppUnit::TestFixture
+{
+public:
+    void test_success()
+    {
+        unsigned counter = 0;
+        const DWORD nTicksBefore = GetTickCount();
+        HRESULT hr = sal::systools::RetryIfFailed(10, 200, Tester(5, counter));
+        const DWORD nTicksAfter = GetTickCount();
+        const DWORD nTicksElapsed = nTicksAfter > nTicksBefore ? nTicksAfter - nTicksBefore
+                                                               : std::numeric_limits<DWORD>::max()
+                                                                     - nTicksBefore + nTicksAfter;
+        CPPUNIT_ASSERT(SUCCEEDED(hr));
+        // 5 attempts, 4 sleeps by ~200 ms
+        CPPUNIT_ASSERT_EQUAL(5U, counter);
+        CPPUNIT_ASSERT_GREATER(DWORD(800 - ClockRes), nTicksElapsed);
+    }
+
+    void test_failure()
+    {
+        unsigned counter = 0;
+        const DWORD nTicksBefore = GetTickCount();
+        HRESULT hr = sal::systools::RetryIfFailed(10, 100, Tester(15, counter));
+        const DWORD nTicksAfter = GetTickCount();
+        const DWORD nTicksElapsed = nTicksAfter > nTicksBefore ? nTicksAfter - nTicksBefore
+                                                               : std::numeric_limits<DWORD>::max()
+                                                                     - nTicksBefore + nTicksAfter;
+        CPPUNIT_ASSERT(FAILED(hr));
+        // 1 + 10 attempts, 10 sleeps by ~100 ms
+        CPPUNIT_ASSERT_EQUAL(11U, counter);
+        CPPUNIT_ASSERT_GREATER(DWORD(1000 - ClockRes), nTicksElapsed);
+    }
+
+    CPPUNIT_TEST_SUITE(test_retry_if_failed);
+    CPPUNIT_TEST(test_success);
+    CPPUNIT_TEST(test_failure);
+    CPPUNIT_TEST_SUITE_END();
+
+private:
+    struct Tester
+    {
+        Tester(unsigned triesBeforeSuccess, unsigned& counter)
+            : m_nTriesBeforeSuccess(triesBeforeSuccess)
+            , m_rCounter(counter)
+        {
+        }
+
+        HRESULT operator()() { return ++m_rCounter >= m_nTriesBeforeSuccess ? S_OK : E_FAIL; }
+
+        unsigned m_nTriesBeforeSuccess;
+        unsigned& m_rCounter;
+    };
+};
+
+CPPUNIT_TEST_SUITE_REGISTRATION(test_systools::test_retry_if_failed);
+
+} // namespace test_systools
+
+CPPUNIT_PLUGIN_IMPLEMENT();
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab cinoptions=b1,g0,N-s cinkeys+=0=break: */