Basic testing

.gitignore

@@ -46,3 +46,5 @@ CMakeUserPresets.json
 
 # CMake build output
 /out
+/TestResults
+/Testing

Test/CMakeLists.txt

@@ -1,15 +1,27 @@
-add_executable(cppjson-Test)
+add_executable(cppjson-Test)
 
 target_link_libraries(cppjson-Test PRIVATE
   cppjson::cppjson
 )
 
+include(FetchContent)
+FetchContent_Declare(
+  googletest
+  URL https://github.com/google/googletest/archive/refs/heads/main.zip
+)
+FetchContent_MakeAvailable(googletest)
+
+
 target_sources(cppjson-Test PRIVATE
   Test.cpp
 )
 
-add_test(
-  NAME cppjson-Test
-  COMMAND cppjson-Test
-  WORKING_DIRECTORY "${CMAKE_CURRENT_SOURCE_DIR}"
-)
+target_link_libraries(cppjson-Test PRIVATE gtest_main)
+
+include(GoogleTest)
+gtest_discover_tests(cppjson-Test)
+
+if(MSVC)
+    add_compile_options("/Zi")
+    add_link_options("/PROFILE")
+endif()

Test/Test.cpp

@@ -1,30 +1,67 @@
+#include <gtest/gtest.h>
 #include <cppjson/cppjson.hpp>
-#include <print>
 
-int main()
+TEST(BasicTests, ArraySize)
+{
+	cppjson::Array array{};
+	array[] = 1;
+	array[] = 2;
+	array[] = 3.0;
+	EXPECT_TRUE(array.Size() == 3);
+}
+
+TEST(BasicTests, InvalidAssignment)
+{
+	cppjson::Object obj{};
+	obj["number"] = 123.0;
+	EXPECT_THROW({ obj["number"] = "NaN"; }, std::logic_error);
+}
+
+TEST(BasicTests, NestedObjects)
+{
+	cppjson::Object object{};
+	object["sub"]["veryNested"] = 6.0;
+
+	EXPECT_EQ(6.0, (double)object["sub"]["veryNested"]);
+}
+
+TEST(BasicTests, ObjectTypes)
+{
+	cppjson::Object obj{};
+	obj["string"] = "Hello";
+	obj["number"] = 42.0;
+	obj["boolean"] = true;
+	obj["null"] = nullptr;
+
+	EXPECT_TRUE(IsType<std::string>(obj["string"]));
+	EXPECT_TRUE(IsType<double>(obj["number"]));
+	EXPECT_TRUE(IsType<bool>(obj["boolean"]));
+	EXPECT_TRUE(IsType<std::nullptr_t>(obj["null"]));
+}
+
+TEST(BasicTests, Primitives)
 {
 	cppjson::Object object{};
-	std::println("{}", object);
 	object["test1"] = "Hello World";
 	object["test2"] = 123.0;
-	object["sub"]["veryNested"] = 6.0;
-	cppjson::Array& array = object["array"];
-	array[] = 2;
-	array[] = 6.0;
-	array[0] = 1;
-	array[] = "Stirng";
-	array.EmplaceBack(nullptr);
-	try
-	{
-		array[2] = true;
-	}
-	catch (const std::logic_error& error)
-	{
-		std::println("Error = {}", error.what());
-	}
-
-	std::println("{}", object);
-	std::println("object[\"test1\"] = {}", object["test1"]);
-	const std::string test = object["test1"];
-	std::println("test = {}", test);
+
+	EXPECT_EQ("Hello World", static_cast<const std::string&>(object["test1"]));
+	EXPECT_EQ(123.0, (double)object["test2"]);
+}
+
+TEST(BasicTests, ValueComparisons)
+{
+	cppjson::Object obj{};
+	obj["a"] = 5.0;
+	obj["b"] = 5.0;
+	obj["c"] = 10.0;
+
+	EXPECT_TRUE(obj["a"] == obj["b"]);
+	EXPECT_FALSE(obj["a"] == obj["c"]);
+}
+
+int main(int argc, char** argv)
+{
+	::testing::InitGoogleTest(&argc, argv);
+	return RUN_ALL_TESTS();
 }

cppjson-Test-results.xml

@@ -0,0 +1,9 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<testsuite name="(empty)"
+	tests="0"
+	failures="0"
+	disabled="0"
+	skipped="0"
+	hostname=""
+	time="0"
+	timestamp="2025-09-14T20:47:43"/>

cppjson/include/cppjson/object.hpp

@@ -38,6 +38,8 @@ namespace cppjson
 		template <typename T>
 		const T& As() const noexcept(false);
 
+		[[nodiscard]] bool operator==(const JsonObject& other) const;
+
 	  private:
 		JsonType _dataType{};
 		std::byte* _dataStorage{};
@@ -55,6 +57,9 @@ namespace cppjson
 		}
 
 		friend struct std::formatter<cppjson::JsonObject>;
+
+		template <typename T>
+		friend bool IsType(const JsonObject& object) noexcept;
 	};
 
 	class Object
@@ -67,6 +72,10 @@ namespace cppjson
 		Object& operator=(Object&&) = default;
 		~Object() = default;
 
+		[[nodiscard]] bool IsEmpty() const noexcept { return this->_nodes.empty(); }
+
+		[[nodiscard]] bool operator==(const Object& other) const;
+
 		class ObjectProxy
 		{
 		  public:
@@ -76,14 +85,14 @@ namespace cppjson
 				requires(!std::same_as<std::remove_cvref_t<T>, JsonObject>)
 			explicit(false) operator T&()
 			{
-				return this->_object.get().As<T>();
+				return this->_object.get().As<std::remove_cvref_t<T>>();
 			}
 
 			template <typename T>
 				requires(!std::same_as<std::remove_cvref_t<T>, JsonObject>)
 			explicit(false) operator const T&() const
 			{
-				return this->_object.get().As<T>();
+				return this->_object.get().As<const std::remove_cvref_t<T>>();
 			}
 
 			template <typename T>
@@ -106,11 +115,14 @@ namespace cppjson
 			{
 				return (*this)[std::string{key}];
 			}
+			[[nodiscard]] bool operator==(const ObjectProxy& other) const { return this->_object.get() == other._object.get(); }
 
 		  private:
 			std::reference_wrapper<JsonObject> _object;
 
 			friend struct std::formatter<cppjson::Object::ObjectProxy>;
+			template <typename T>
+			friend bool IsType(const Object::ObjectProxy& proxy) noexcept;
 		};
 
 		class ConstObjectProxy
@@ -178,10 +190,37 @@ namespace cppjson
 			return Object::ConstObjectProxy{this->_objects.at(index)};
 		}
 
+		[[nodiscard]] std::size_t Size() const noexcept { return this->_objects.size(); }
+
+		[[nodiscard]] bool operator==(const Array& other) const
+		{
+			if (this->_objects.size() != other._objects.size()) return false;
+			return std::equal(this->_objects.begin(), this->_objects.end(), other._objects.begin());
+		}
+
 	  private:
 		std::vector<JsonObject> _objects{};
 
 		friend struct std::formatter<cppjson::JsonObject>;
 		friend struct std::formatter<cppjson::Array>;
 	};
+
+	template <typename T>
+	[[nodiscard]] bool IsType(const JsonObject& object) noexcept
+	{
+		if constexpr (std::same_as<std::remove_cvref_t<T>, std::nullptr_t>) return object._dataType == JsonType::Null;
+		else if constexpr (std::same_as<std::remove_cvref_t<T>, std::string>) return object._dataType == JsonType::String;
+		else if constexpr (std::same_as<std::remove_cvref_t<T>, Object>) return object._dataType == JsonType::Object;
+		else if constexpr (std::same_as<std::remove_cvref_t<T>, double>) return object._dataType == JsonType::Number;
+		else if constexpr (std::same_as<std::remove_cvref_t<T>, bool>) return object._dataType == JsonType::Bool;
+		else if constexpr (std::same_as<std::remove_cvref_t<T>, Array>) return object._dataType == JsonType::Array;
+		else
+			return false;
+	}
+
+	template <typename T>
+	[[nodiscard]] bool IsType(const Object::ObjectProxy& proxy) noexcept
+	{
+		return IsType<T>(proxy._object.get());
+	}
 } // namespace cppjson

cppjson/src/object.cpp

@@ -46,6 +46,21 @@ cppjson::JsonObject::~JsonObject()
 	::operator delete(this->_dataStorage);
 }
 
+bool cppjson::JsonObject::operator==(const JsonObject& other) const
+{
+	if (other._dataType != this->_dataType) return false;
+	switch (this->_dataType)
+	{
+	case JsonType::Null: return true;
+	case JsonType::Number: return this->DangerousAs<double>() == other.DangerousAs<double>();
+	case JsonType::Bool: return this->DangerousAs<bool>() == other.DangerousAs<bool>();
+	case JsonType::String: return this->DangerousAs<std::string>() == other.DangerousAs<std::string>();
+	case JsonType::Object: return this->DangerousAs<cppjson::Object>() == other.DangerousAs<cppjson::Object>();
+	case JsonType::Array: return this->DangerousAs<cppjson::Array>() == other.DangerousAs<cppjson::Array>();
+	default: return false;
+	}
+}
+
 void cppjson::JsonObject::Destroy(void)
 {
 	using cppjson::Array;
@@ -185,3 +200,14 @@ cppjson::Object::ConstObjectProxy cppjson::Object::ConstObjectProxy::operator[](
 {
 	return ConstObjectProxy{this->_object.get().As<Object>()[key]};
 }
+
+bool cppjson::Object::operator==(const Object& other) const
+{
+	if (this->_nodes.size() != other._nodes.size()) return false;
+	for (const auto& [key, value] : this->_nodes)
+	{
+		if (!other._nodes.contains(key)) return false;
+		if (!(value == other._nodes.at(key))) return false;
+	}
+	return true;
+}