// We also provide some convenient wrappers:
//
//   // Prints a value to a string.  For a (const or not) char
//   // pointer, the NUL-terminated string (but not the pointer) is
//   // printed.
//   std::string ::testing::PrintToString(const T& value);
//
//   // Prints a value tersely: for a reference type, the referenced
//   // value (but not the address) is printed; for a (const or not) char

  report.AddQuantizationResult(std::move(result));

  // Check that the report string is equivalent to the textproto representation
  // of the `QuantizationResults`.
  std::string result_str{};
  TextFormat::PrintToString(report.GetQuantizationResults(), &result_str);

  EXPECT_THAT(report.ToString(), HasSubstr("Quantization Report"));
  EXPECT_THAT(report.ToString(), HasSubstr(result_str));

  std::string txt_metadata;
  if (tpu_compile_metadata_debug) {
    ::tensorflow::protobuf::TextFormat::Printer printer;
    printer.SetExpandAny(true);
    printer.PrintToString(metadata, &txt_metadata);
  } else {
    metadata.SerializeToString(&txt_metadata);
  }

  auto compile_op = builder->create<TF::_TPUCompileMlirOp>(
      cluster_func.getLoc(),

          MakeAndRegisterTestInfo(
              test_case_name.c_str(),
              test_name_stream.GetString().c_str(),
              NULL,  // No type parameter.
              PrintToString(*param_it).c_str(),
              GetTestCaseTypeId(),
              TestCase::SetUpTestCase,
              TestCase::TearDownTestCase,
              test_info->test_meta_factory->CreateTestFactory(*param_it));

class TestPartResult;                  // Result of a test part.
class UnitTest;                        // A collection of test cases.

template <typename T>
::std::string PrintToString(const T& value);

namespace internal {

struct TraceInfo;                      // Information about a trace point.
class ScopedTrace;                     // Implements scoped trace.