json-validator/tests/jsoncpp_adapter_test.cxx

#include <gmock/gmock.h>
#include <gtest/gtest.h>

#include <json/value.h>

#include <jvalidate/adapter.h>
#include <jvalidate/adapters/jsoncpp.h>
#include <jvalidate/detail/array_iterator.h>
#include <jvalidate/detail/object_iterator.h>

using namespace jvalidate::adapter;
using testing::IsEmpty;

TEST(JsonCppAdapterTest, IteratorDefaultCtors) {
  using ArrayIterator =
      detail::JsonArrayIterator<Json::ValueConstIterator, JsonCppAdapter<Json::Value const>>;
  using ObjectIterator =
      detail::JsonObjectIterator<Json::ValueConstIterator, JsonCppAdapter<Json::Value const>>;

  EXPECT_THAT(ArrayIterator(), ArrayIterator());
  EXPECT_THAT(ObjectIterator(), ObjectIterator());
}

TEST(JsonCppAdapterTest, Empty) {
  EXPECT_THAT(&AdapterTraits<Json::Value>::const_empty(),
              &AdapterTraits<Json::Value const>::const_empty());
}

TEST(JsonCppAdapterTest, NumberThatFitsInIntIsIntType) {
  Json::Value json = 10.0;
  EXPECT_THAT(JsonCppAdapter(json).type(), Type::Integer);
}

TEST(JsonCppAdapterTest, NumberThatDoesFitsInIntIsNumberType) {
  Json::Value json = 10.5;
  EXPECT_THAT(JsonCppAdapter(json).type(), Type::Number);
}

TEST(JsonCppAdapterTest, UIntThatFitsInIntIsIntType) {
  Json::Value json = 10ULL;
  EXPECT_THAT(JsonCppAdapter(json).type(), Type::Integer);
}

TEST(JsonCppAdapterTest, UIntThatDoesNotFitInIntIsNumberType) {
  Json::Value json = 9223372036854775808ULL;
  EXPECT_THAT(JsonCppAdapter(json).type(), Type::Number);
}

TEST(JsonCppAdapterTest, ObjectAdapterIsNullSafe) {
  JsonCppObjectAdapter<Json::Value const> object(nullptr);
  EXPECT_THAT(object.size(), 0);
  EXPECT_THAT(*object, IsEmpty());
  EXPECT_NO_THROW(object.find("A"));
  EXPECT_THAT(object.begin(), object.end());
  EXPECT_THAT(object.find("A"), object.end());
  EXPECT_FALSE(object.contains("A"));
  EXPECT_NO_THROW(object["A"]);
  EXPECT_THAT(object["A"].type(), Type::Null);
}

TEST(JsonCppAdapterTest, ArrayAdapterIsNullSafe) {
  jvalidate::adapter::detail::SimpleArrayAdapter<Json::Value const> array(nullptr);
  EXPECT_THAT(array.size(), 0);
  EXPECT_THAT(*array, IsEmpty());
  EXPECT_THAT(array.begin(), array.end());
  EXPECT_NO_THROW(array[0]);
  EXPECT_THAT(array[0].type(), Type::Null);
}

#if !defined(JVALIDATE_MONOTEST)
int main(int argc, char ** argv) {
  testing::InitGoogleMock(&argc, argv);
  return RUN_ALL_TESTS();
}
#endif