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diff --git a/vendor/CppQuickCheck-2018-03-28/examples/src/TestChooseGenerator.cpp b/vendor/CppQuickCheck-2018-03-28/examples/src/TestChooseGenerator.cpp
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+/*
+ * Copyright (c) 2010, Gregory Rogers All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ *   * Redistributions of source code must retain the above copyright notice,
+ *     this list of conditions and the following disclaimer.
+ *   * Redistributions in binary form must reproduce the above copyright notice,
+ *     this list of conditions and the following disclaimer in the documentation
+ *     and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "cppqc.h"
+
+// This property tests that A*A > A holds.
+//
+// In general, this is not true, for instance, if A is zero.
+// However, by using the "choose" generator, we can define that
+// A is in a given interval (between 2 and 1000 in this example).
+struct AxA_isGreaterThan_A : cppqc::Property<int>
+{
+    static constexpr int MIN = 2;
+    static constexpr int MAX = 1000;
+    
+    AxA_isGreaterThan_A() : Property(cppqc::choose(MIN, MAX)) {}
+
+    bool check(const int &A) const override
+    {
+        return A * A > A;
+    }
+
+    std::string name() const override
+    {
+        return "A*A > A";
+    }
+};
+
+int main()
+{
+    cppqc::quickCheckOutput(AxA_isGreaterThan_A());
+}