namespace tensorflow {
TF_Tensor* TF_TensorFromTensor(const Tensor& src, absl::Status* status);
absl::Status TF_TensorToTensor(const TF_Tensor* src, Tensor* dst);

namespace {

static void ExpectHasSubstr(absl::string_view s, absl::string_view expected) {
  EXPECT_TRUE(absl::StrContains(s, expected))
      << "'" << s << "' does not contain '" << expected << "'";
}