protobuf/upb/json/decode_test.cc

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#include "upb/json/decode.h"

#include "google/protobuf/struct.upb.h"
#include "gtest/gtest.h"
#include "upb/json/test.upb.h"
#include "upb/json/test.upbdefs.h"
#include "upb/reflection/def.hpp"
#include "upb/upb.hpp"

static upb_test_Box* JsonDecode(const char* json, upb_Arena* a) {
  upb::Status status;
  upb::DefPool defpool;
  upb::MessageDefPtr m(upb_test_Box_getmsgdef(defpool.ptr()));
  EXPECT_TRUE(m.ptr() != nullptr);

  upb_test_Box* box = upb_test_Box_new(a);
  int options = 0;
  bool ok = upb_JsonDecode(json, strlen(json), box, m.ptr(), defpool.ptr(),
                           options, a, status.ptr());
  return ok ? box : nullptr;
}

struct FloatTest {
  const std::string json;
  float f;
};

static const std::vector<FloatTest> FloatTestsPass = {
    {R"({"f": 0})", 0},
    {R"({"f": 1})", 1},
    {R"({"f": 1.000000})", 1},
    {R"({"f": 1.5e1})", 15},
    {R"({"f": 15e-1})", 1.5},
    {R"({"f": -3.5})", -3.5},
    {R"({"f": 3.402823e38})", 3.402823e38},
    {R"({"f": -3.402823e38})", -3.402823e38},
    {R"({"f": 340282346638528859811704183484516925440.0})",
     340282346638528859811704183484516925440.0},
    {R"({"f": -340282346638528859811704183484516925440.0})",
     -340282346638528859811704183484516925440.0},
};

static const std::vector<FloatTest> FloatTestsFail = {
    {R"({"f": 1z})", 0},
    {R"({"f": 3.4028236e+38})", 0},
    {R"({"f": -3.4028236e+38})", 0},
};

// Decode some floats.
TEST(JsonTest, DecodeFloats) {
  upb::Arena a;

  for (const auto& test : FloatTestsPass) {
    upb_test_Box* box = JsonDecode(test.json.c_str(), a.ptr());
    EXPECT_NE(box, nullptr);
    float f = upb_test_Box_f(box);
    EXPECT_EQ(f, test.f);
  }

  for (const auto& test : FloatTestsFail) {
    upb_test_Box* box = JsonDecode(test.json.c_str(), a.ptr());
    EXPECT_EQ(box, nullptr);
  }
}