Function FormatActual

library/cpp/testing/gtest_extensions/assertions.cpp:9–18

namespace NGTest::NInternal {
    namespace {
        void FormatActual(const std::exception& err, const TBackTrace* bt, TStringBuilder& out) {
            out << "an exception of type " << TypeName(err) << " "
                << "with message " << TString(err.what()).Quote() << ".";
            if (bt) {
                out << "\n   Trace: ";
                for (auto& line: StringSplitter(bt->PrintToString()).Split('\n')) {
                    out << "          " << line.Token() << "\n";
                }
            }
        }

        void FormatActual(TStringBuilder& out) {
            out << "  Actual: it throws ";