Add tests. Status-unsuccess

unittest.cpp

@@ -7,7 +7,7 @@ TEST_CASE("distinct positive numbers") {
     double min = 0;
     double max = 0;
     find_minmax({1, 2}, min, max);
-    CHECK(min == 1);
+    CHECK(min == 3);
     CHECK(max == 2);
 }