✅ add regression test for #3810

Signed-off-by: Niels Lohmann <[email protected]>

Author: nlohmann

tests/src/unit-regression2.cpp

@@ -1025,7 +1025,7 @@ TEST_CASE("regression tests 2")
         // fix "not used" warning
         states[0].bla = 1;
 
-        const auto* const expected = "[{\"bla\":1},{\"bla\":0},{\"bla\":0},{\"bla\":0},{\"bla\":0},{\"bla\":0},{\"bla\":0},{\"bla\":0},{\"bla\":0},{\"bla\":0},{\"bla\":0},{\"bla\":0},{\"bla\":0},{\"bla\":0},{\"bla\":0},{\"bla\":0},{\"bla\":0},{\"bla\":0},{\"bla\":0},{\"bla\":0},{\"bla\":0},{\"bla\":0},{\"bla\":0},{\"bla\":0},{\"bla\":0},{\"bla\":0},{\"bla\":0},{\"bla\":0},{\"bla\":0},{\"bla\":0},{\"bla\":0},{\"bla\":0},{\"bla\":0},{\"bla\":0},{\"bla\":0},{\"bla\":0},{\"bla\":0},{\"bla\":0},{\"bla\":0},{\"bla\":0},{\"bla\":0},{\"bla\":0},{\"bla\":0},{\"bla\":0},{\"bla\":0}]";
+        const auto* const expected = R"([{"bla":1},{"bla":0},{"bla":0},{"bla":0},{"bla":0},{"bla":0},{"bla":0},{"bla":0},{"bla":0},{"bla":0},{"bla":0},{"bla":0},{"bla":0},{"bla":0},{"bla":0},{"bla":0},{"bla":0},{"bla":0},{"bla":0},{"bla":0},{"bla":0},{"bla":0},{"bla":0},{"bla":0},{"bla":0},{"bla":0},{"bla":0},{"bla":0},{"bla":0},{"bla":0},{"bla":0},{"bla":0},{"bla":0},{"bla":0},{"bla":0},{"bla":0},{"bla":0},{"bla":0},{"bla":0},{"bla":0},{"bla":0},{"bla":0},{"bla":0},{"bla":0},{"bla":0}])";
 
         // This works:
         nlohmann::json j;