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reflective-rapidjson/lib/tests/jsonreflector.cpp

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#include "../json/reflector.h"
#include "../json/serializable.h"
#include <c++utilities/conversion/stringbuilder.h>
#include <c++utilities/conversion/stringconversion.h>
#include <c++utilities/io/misc.h>
#include <c++utilities/tests/testutils.h>
using TestUtilities::operator<<; // must be visible prior to the call site
#include <cppunit/TestFixture.h>
#include <cppunit/extensions/HelperMacros.h>
#include <rapidjson/document.h>
#include <rapidjson/stringbuffer.h>
#include <rapidjson/writer.h>
#include <iostream>
#include <string>
#include <vector>
using namespace std;
using namespace CPPUNIT_NS;
using namespace RAPIDJSON_NAMESPACE;
using namespace IoUtilities;
using namespace ConversionUtilities;
using namespace TestUtilities;
using namespace TestUtilities::Literals;
using namespace ReflectiveRapidJSON;
/// \cond
// define some structs for testing serialization
struct TestObject : public JsonSerializable<TestObject> {
int number;
double number2;
vector<int> numbers;
string text;
bool boolean;
};
struct NestingObject : public JsonSerializable<NestingObject> {
string name;
TestObject testObj;
};
struct NestingArray : public JsonSerializable<NestingArray> {
string name;
vector<TestObject> testObjects;
};
// pretend serialization code for structs has been generated
namespace ReflectiveRapidJSON {
namespace Reflector {
template <> inline void push<TestObject>(const TestObject &reflectable, Value::Object &value, Document::AllocatorType &allocator)
{
push(reflectable.number, "number", value, allocator);
push(reflectable.number2, "number2", value, allocator);
push(reflectable.numbers, "numbers", value, allocator);
push(reflectable.text, "text", value, allocator);
push(reflectable.boolean, "boolean", value, allocator);
}
template <> inline void push<NestingObject>(const NestingObject &reflectable, Value::Object &value, Document::AllocatorType &allocator)
{
push(reflectable.name, "name", value, allocator);
push(reflectable.testObj, "testObj", value, allocator);
}
template <> inline void push<NestingArray>(const NestingArray &reflectable, Value::Object &value, Document::AllocatorType &allocator)
{
push(reflectable.name, "name", value, allocator);
push(reflectable.testObjects, "testObjects", value, allocator);
}
template <>
inline void pull<TestObject>(TestObject &reflectable, const GenericValue<UTF8<char>>::ConstObject &value, JsonDeserializationErrors *errors)
{
const char *previousRecord;
if (errors) {
previousRecord = errors->currentRecord;
errors->currentRecord = "TestObject";
}
pull(reflectable.number, "number", value, errors);
pull(reflectable.number2, "number2", value, errors);
pull(reflectable.numbers, "numbers", value, errors);
pull(reflectable.text, "text", value, errors);
pull(reflectable.boolean, "boolean", value, errors);
if (errors) {
errors->currentRecord = previousRecord;
}
}
template <>
inline void pull<NestingObject>(NestingObject &reflectable, const GenericValue<UTF8<char>>::ConstObject &value, JsonDeserializationErrors *errors)
{
const char *previousRecord;
if (errors) {
previousRecord = errors->currentRecord;
errors->currentRecord = "NestingObject";
}
pull(reflectable.name, "name", value, errors);
pull(reflectable.testObj, "testObj", value, errors);
if (errors) {
errors->currentRecord = previousRecord;
}
}
template <>
inline void pull<NestingArray>(NestingArray &reflectable, const GenericValue<UTF8<char>>::ConstObject &value, JsonDeserializationErrors *errors)
{
const char *previousRecord;
if (errors) {
previousRecord = errors->currentRecord;
errors->currentRecord = "NestingArray";
}
pull(reflectable.name, "name", value, errors);
pull(reflectable.testObjects, "testObjects", value, errors);
if (errors) {
errors->currentRecord = previousRecord;
}
}
} // namespace Reflector
// namespace Reflector
} // namespace ReflectiveRapidJSON
/// \endcond
/*!
* \brief The JsonReflectorTests class tests RapidJSON wrapper which is used to ease code generation.
* \remarks In these tests, the required reflection code is provided by hand so the generator isn't involved yet.
*/
class JsonReflectorTests : public TestFixture {
CPPUNIT_TEST_SUITE(JsonReflectorTests);
CPPUNIT_TEST(testSerializePrimitives);
CPPUNIT_TEST(testSerializeSimpleObjects);
CPPUNIT_TEST(testSerializeNestedObjects);
CPPUNIT_TEST(testDeserializePrimitives);
CPPUNIT_TEST(testDeserializeSimpleObjects);
CPPUNIT_TEST(testDeserializeNestedObjects);
CPPUNIT_TEST(testHandlingParseError);
CPPUNIT_TEST(testHandlingTypeMismatch);
CPPUNIT_TEST_SUITE_END();
public:
void setUp();
void tearDown();
void experiment();
void testSerializePrimitives();
void testSerializeSimpleObjects();
void testSerializeNestedObjects();
void testDeserializePrimitives();
void testDeserializeSimpleObjects();
void testDeserializeNestedObjects();
void testHandlingParseError();
void testHandlingTypeMismatch();
private:
};
CPPUNIT_TEST_SUITE_REGISTRATION(JsonReflectorTests);
void JsonReflectorTests::setUp()
{
}
void JsonReflectorTests::tearDown()
{
}
/*!
* \brief Tests serializing strings, numbers, arrays and boolean.
*/
void JsonReflectorTests::testSerializePrimitives()
{
Document doc(kArrayType);
Document::AllocatorType &alloc = doc.GetAllocator();
doc.SetArray();
Document::Array array(doc.GetArray());
// string
Reflector::push<string>("foo"s, array, alloc);
Reflector::push<const char *>("bar", array, alloc);
// number
Reflector::push<int>(25, array, alloc);
Reflector::push<double>(12.5, array, alloc);
// array
Reflector::push<vector<const char *>>({ "foo1", "bar1" }, array, alloc);
Reflector::push<list<const char *>>({ "foo2", "bar2" }, array, alloc);
Reflector::push<initializer_list<const char *>>({ "foo3", "bar3" }, array, alloc);
// boolean
Reflector::push<bool>(true, array, alloc);
Reflector::push<bool>(false, array, alloc);
StringBuffer strbuf;
Writer<StringBuffer> jsonWriter(strbuf);
doc.Accept(jsonWriter);
CPPUNIT_ASSERT_EQUAL(
"[\"foo\",\"bar\",25,12.5,[\"foo1\",\"bar1\"],[\"foo2\",\"bar2\"],[\"foo3\",\"bar3\"],true,false]"s, string(strbuf.GetString()));
}
/*!
* \brief Tests serializing objects.
*/
void JsonReflectorTests::testSerializeSimpleObjects()
{
TestObject testObj;
testObj.number = 42;
testObj.number2 = 3.141592653589793;
testObj.numbers = { 1, 2, 3, 4 };
testObj.text = "test";
testObj.boolean = false;
CPPUNIT_ASSERT_EQUAL("{\"number\":42,\"number2\":3.141592653589793,\"numbers\":[1,2,3,4],\"text\":\"test\",\"boolean\":false}"s,
string(testObj.toJson().GetString()));
}
/*!
* \brief Tests serializing nested object and arrays.
*/
void JsonReflectorTests::testSerializeNestedObjects()
{
NestingObject nestingObj;
nestingObj.name = "nesting";
TestObject &testObj = nestingObj.testObj;
testObj.number = 42;
testObj.number2 = 3.141592653589793;
testObj.numbers = { 1, 2, 3, 4 };
testObj.text = "test";
testObj.boolean = false;
CPPUNIT_ASSERT_EQUAL(
"{\"name\":\"nesting\",\"testObj\":{\"number\":42,\"number2\":3.141592653589793,\"numbers\":[1,2,3,4],\"text\":\"test\",\"boolean\":false}}"s,
string(nestingObj.toJson().GetString()));
NestingArray nestingArray;
nestingArray.name = "nesting2";
nestingArray.testObjects.emplace_back(testObj);
nestingArray.testObjects.emplace_back(testObj);
nestingArray.testObjects.back().number = 43;
CPPUNIT_ASSERT_EQUAL(
"{\"name\":\"nesting2\",\"testObjects\":[{\"number\":42,\"number2\":3.141592653589793,\"numbers\":[1,2,3,4],\"text\":\"test\",\"boolean\":false},{\"number\":43,\"number2\":3.141592653589793,\"numbers\":[1,2,3,4],\"text\":\"test\",\"boolean\":false}]}"s,
string(nestingArray.toJson().GetString()));
}
/*!
* \brief Tests deserializing strings, numbers (int, float, double) and boolean.
*/
void JsonReflectorTests::testDeserializePrimitives()
{
Document doc(kArrayType);
doc.Parse("[\"a\", 5, 5e6, \"test\", true, 4.125, false]");
auto array = doc.GetArray().begin();
string str1, str2;
int int1 = 0;
bool bool1 = false, bool2 = true;
float float1 = 0.0;
double double1 = 0.0;
JsonDeserializationErrors errors;
Reflector::pull(str1, array, &errors);
Reflector::pull(int1, array, &errors);
Reflector::pull(float1, array, &errors);
Reflector::pull(str2, array, &errors);
Reflector::pull(bool1, array, &errors);
Reflector::pull(double1, array, &errors);
Reflector::pull(bool2, array, &errors);
CPPUNIT_ASSERT_EQUAL("a"s, str1);
CPPUNIT_ASSERT_EQUAL(5, int1);
CPPUNIT_ASSERT_EQUAL(5e6f, float1);
CPPUNIT_ASSERT_EQUAL("test"s, str2);
CPPUNIT_ASSERT_EQUAL(true, bool1);
CPPUNIT_ASSERT_EQUAL(4.125, double1);
CPPUNIT_ASSERT_EQUAL(false, bool2);
}
/*!
* \brief Tests deserializing simple objects.
*/
void JsonReflectorTests::testDeserializeSimpleObjects()
{
const TestObject testObj(
TestObject::fromJson("{\"number\":42,\"number2\":3.141592653589793,\"numbers\":[1,2,3,4],\"text\":\"test\",\"boolean\":false}"));
CPPUNIT_ASSERT_EQUAL(42, testObj.number);
CPPUNIT_ASSERT_EQUAL(3.141592653589793, testObj.number2);
CPPUNIT_ASSERT_EQUAL(vector<int>({ 1, 2, 3, 4 }), testObj.numbers);
CPPUNIT_ASSERT_EQUAL("test"s, testObj.text);
CPPUNIT_ASSERT_EQUAL(false, testObj.boolean);
}
/*!
* \brief Tests deserializing nested objects and arrays.
*/
void JsonReflectorTests::testDeserializeNestedObjects()
{
const NestingObject nestingObj(NestingObject::fromJson("{\"name\":\"nesting\",\"testObj\":{\"number\":42,\"number2\":3.141592653589793,"
"\"numbers\":[1,2,3,4],\"text\":\"test\",\"boolean\":false}}"));
const TestObject &testObj = nestingObj.testObj;
CPPUNIT_ASSERT_EQUAL("nesting"s, nestingObj.name);
CPPUNIT_ASSERT_EQUAL(42, testObj.number);
CPPUNIT_ASSERT_EQUAL(3.141592653589793, testObj.number2);
CPPUNIT_ASSERT_EQUAL(vector<int>({ 1, 2, 3, 4 }), testObj.numbers);
CPPUNIT_ASSERT_EQUAL("test"s, testObj.text);
CPPUNIT_ASSERT_EQUAL(false, testObj.boolean);
const NestingArray nestingArray(NestingArray::fromJson("{\"name\":\"nesting2\",\"testObjects\":[{\"number\":42,\"number2\":3.141592653589793,"
"\"numbers\":[1,2,3,4],\"text\":\"test\",\"boolean\":false},{\"number\":43,\"number2\":3."
"141592653589793,\"numbers\":[1,2,3,4],\"text\":\"test\",\"boolean\":false}]}"));
const vector<TestObject> &testObjects = nestingArray.testObjects;
CPPUNIT_ASSERT_EQUAL("nesting2"s, nestingArray.name);
CPPUNIT_ASSERT_EQUAL(2_st, testObjects.size());
CPPUNIT_ASSERT_EQUAL(42, testObjects[0].number);
CPPUNIT_ASSERT_EQUAL(43, testObjects[1].number);
for (const TestObject &testObj : testObjects) {
CPPUNIT_ASSERT_EQUAL(3.141592653589793, testObj.number2);
CPPUNIT_ASSERT_EQUAL(vector<int>({ 1, 2, 3, 4 }), testObj.numbers);
CPPUNIT_ASSERT_EQUAL("test"s, testObj.text);
CPPUNIT_ASSERT_EQUAL(false, testObj.boolean);
}
}
/*!
* \brief Tests whether RAPIDJSON_NAMESPACE::ParseResult is thrown correctly when passing invalid JSON to fromJSON().
*/
void JsonReflectorTests::testHandlingParseError()
{
try {
NestingObject::fromJson("{\"name\":nesting\",\"testObj\":{\"number\":42,\"number2\":3.141592653589793,\"numbers\":[1,2,3,4],\"text\":"
"\"test\",\"boolean\":false}}");
CPPUNIT_FAIL("expected ParseResult thrown");
} catch (const RAPIDJSON_NAMESPACE::ParseResult &res) {
CPPUNIT_ASSERT_EQUAL(RAPIDJSON_NAMESPACE::kParseErrorValueInvalid, res.Code());
CPPUNIT_ASSERT_EQUAL(9_st, res.Offset());
}
}
/*!
* \brief Tests whether JsonDeserializationError is thrown on type mismatch.
*/
void JsonReflectorTests::testHandlingTypeMismatch()
{
JsonDeserializationErrors errors;
NestingArray::fromJson("{\"name\":\"nesting2\",\"testObjects\":[{\"number\":42,\"number2\":3.141592653589793,"
"\"numbers\":[1,2,3,4],\"text\":\"test\",\"boolean\":false},{\"number\":43,\"number2\":3."
"141592653589793,\"numbers\":[1,2,3,4],\"text\":\"test\",\"boolean\":false}]}",
&errors);
CPPUNIT_ASSERT_EQUAL(0_st, errors.size());
NestingObject::fromJson("{\"name\":\"nesting\",\"testObj\":{\"number\":\"42\",\"number2\":3.141592653589793,\"numbers\":[1,2,3,4],\"text\":"
"\"test\",\"boolean\":false}}",
&errors);
CPPUNIT_ASSERT_EQUAL(1_st, errors.size());
CPPUNIT_ASSERT_EQUAL(JsonDeserializationErrorKind::TypeMismatch, errors.front().kind);
CPPUNIT_ASSERT_EQUAL(JsonType::Number, errors.front().expectedType);
CPPUNIT_ASSERT_EQUAL(JsonType::String, errors.front().actualType);
CPPUNIT_ASSERT_EQUAL("number"s, string(errors.front().member));
CPPUNIT_ASSERT_EQUAL("TestObject"s, string(errors.front().record));
errors.clear();
NestingObject::fromJson("{\"name\":\"nesting\",\"testObj\":{\"number\":42,\"number2\":3.141592653589793,\"numbers\":1,\"text\":"
"\"test\",\"boolean\":false}}",
&errors);
CPPUNIT_ASSERT_EQUAL(1_st, errors.size());
CPPUNIT_ASSERT_EQUAL(JsonDeserializationErrorKind::TypeMismatch, errors.front().kind);
CPPUNIT_ASSERT_EQUAL(JsonType::Array, errors.front().expectedType);
CPPUNIT_ASSERT_EQUAL(JsonType::Number, errors.front().actualType);
CPPUNIT_ASSERT_EQUAL("numbers"s, string(errors.front().member));
CPPUNIT_ASSERT_EQUAL("TestObject"s, string(errors.front().record));
errors.clear();
NestingObject::fromJson("{\"name\":[],\"testObj\":\"this is not an object\"}", &errors);
CPPUNIT_ASSERT_EQUAL(2_st, errors.size());
CPPUNIT_ASSERT_EQUAL(JsonDeserializationErrorKind::TypeMismatch, errors.front().kind);
CPPUNIT_ASSERT_EQUAL(JsonType::String, errors.front().expectedType);
CPPUNIT_ASSERT_EQUAL(JsonType::Array, errors.front().actualType);
CPPUNIT_ASSERT_EQUAL("name"s, string(errors.front().member));
CPPUNIT_ASSERT_EQUAL("NestingObject"s, string(errors.front().record));
CPPUNIT_ASSERT_EQUAL(JsonDeserializationErrorKind::TypeMismatch, errors.back().kind);
CPPUNIT_ASSERT_EQUAL(JsonType::Object, errors.back().expectedType);
CPPUNIT_ASSERT_EQUAL(JsonType::String, errors.back().actualType);
CPPUNIT_ASSERT_EQUAL("testObj"s, string(errors.back().member));
CPPUNIT_ASSERT_EQUAL("NestingObject"s, string(errors.back().record));
errors.clear();
const NestingArray nestingArray(
NestingArray::fromJson("{\"name\":\"nesting2\",\"testObjects\":[25,{\"number\":42,\"number2\":3.141592653589793,"
"\"numbers\":[1,2,3,4],\"text\":\"test\",\"boolean\":false},\"foo\",{\"number\":43,\"number2\":3."
"141592653589793,\"numbers\":[1,2,3,4,\"bar\"],\"text\":\"test\",\"boolean\":false}]}",
&errors));
CPPUNIT_ASSERT_EQUAL(3_st, errors.size());
CPPUNIT_ASSERT_EQUAL(JsonDeserializationErrorKind::TypeMismatch, errors[0].kind);
CPPUNIT_ASSERT_EQUAL(JsonType::Object, errors[0].expectedType);
CPPUNIT_ASSERT_EQUAL(JsonType::Number, errors[0].actualType);
CPPUNIT_ASSERT_EQUAL("testObjects"s, string(errors[0].member));
CPPUNIT_ASSERT_EQUAL("NestingArray"s, string(errors[0].record));
CPPUNIT_ASSERT_EQUAL(0_st, errors[0].index);
CPPUNIT_ASSERT_EQUAL(JsonDeserializationErrorKind::TypeMismatch, errors[1].kind);
CPPUNIT_ASSERT_EQUAL(JsonType::Object, errors[1].expectedType);
CPPUNIT_ASSERT_EQUAL(JsonType::String, errors[1].actualType);
CPPUNIT_ASSERT_EQUAL(2_st, errors[1].index);
CPPUNIT_ASSERT_EQUAL("testObjects"s, string(errors[1].member));
CPPUNIT_ASSERT_EQUAL("NestingArray"s, string(errors[1].record));
CPPUNIT_ASSERT_EQUAL(JsonDeserializationErrorKind::TypeMismatch, errors[2].kind);
CPPUNIT_ASSERT_EQUAL(JsonType::Number, errors[2].expectedType);
CPPUNIT_ASSERT_EQUAL(JsonType::String, errors[2].actualType);
CPPUNIT_ASSERT_EQUAL("numbers"s, string(errors[2].member));
CPPUNIT_ASSERT_EQUAL("TestObject"s, string(errors[2].record));
CPPUNIT_ASSERT_EQUAL(4_st, errors[2].index);
errors.clear();
errors.throwOn = JsonDeserializationErrors::ThrowOn::TypeMismatch;
CPPUNIT_ASSERT_THROW(NestingObject::fromJson("{\"name\":[],\"testObj\":\"this is not an object\"}", &errors), JsonDeserializationError);
}
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