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diff --git a/test/rtree/test_forced_reinsertion.cpp b/test/rtree/test_forced_reinsertion.cpp
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+++ b/test/rtree/test_forced_reinsertion.cpp
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+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*************************************************************************
+ *
+ * Copyright (c) 2021 Kohei Yoshida
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ *
+ ************************************************************************/
+
+#include "test_global.hpp" // This must be the first header to be included.
+#include "test_global_rtree.hpp"
+
+using mdds::rtree;
+using std::cout;
+using std::endl;
+
+void rtree_test_forced_reinsertion()
+{
+    stack_printer __stack_printer__("::rtree_test_forced_reinsertion");
+
+    using rt_type = rtree<int16_t, std::string, tiny_trait_2d_forced_reinsertion>;
+    rt_type::integrity_check_properties check_props;
+    check_props.throw_on_first_error = false;
+
+    rt_type tree;
+
+    for (int16_t i = 0; i < 6; ++i)
+    {
+        int16_t w = 1;
+        std::ostringstream os;
+        os << "foo" << i;
+        tree.insert({{i, i}, {int16_t(i + w), int16_t(i + w)}}, os.str());
+    }
+
+    assert(tree.size() == 6);
+    tree.check_integrity(check_props);
+
+    tree.clear();
+    assert(tree.empty());
+    assert(tree.size() == 0);
+    tree.check_integrity(check_props);
+
+    for (int16_t x = 0; x < 5; ++x)
+    {
+        for (int16_t y = 0; y < 5; ++y)
+        {
+            std::ostringstream os;
+            int16_t x2 = x * 2;
+            int16_t y2 = y * 2;
+            os << "(x=" << x2 << ",y=" << y2 << ")";
+            std::string v = os.str();
+            int16_t xe = x2 + 2, ye = y2 + 2;
+            tree.insert({{x2, y2}, {xe, ye}}, std::move(v));
+        }
+    }
+
+    tree.check_integrity(check_props);
+    assert(tree.size() == 25);
+
+    export_tree(tree, "rtree-test-forced-reinsertion");
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */