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from pathlib import Path
from typing import cast
from unittest.mock import MagicMock
import pytest
from codebase_rag.tests.conftest import get_node_names, get_relationships, run_updater
@pytest.fixture
def cpp_comprehensive_project(temp_repo: Path) -> Path:
"""Create a comprehensive C++ project combining all features."""
project_path = temp_repo / "cpp_comprehensive_test"
project_path.mkdir()
(project_path / "src").mkdir()
(project_path / "include").mkdir()
(project_path / "include" / "core").mkdir()
(project_path / "include" / "utils").mkdir()
(project_path / "tests").mkdir()
(project_path / "include" / "core" / "base.h").write_text(
encoding="utf-8",
data="""
#pragma once
#include <memory>
namespace core {
template<typename T>
class Base {
public:
virtual ~Base() = default;
virtual void process(const T& data) = 0;
virtual std::unique_ptr<T> clone() const = 0;
};
}
""",
)
(project_path / "include" / "utils" / "helpers.h").write_text(
encoding="utf-8",
data="""
#pragma once
#include <string>
#include <vector>
namespace utils {
template<typename Container>
void sort_container(Container& container);
std::string join(const std::vector<std::string>& strings, const std::string& delimiter);
}
""",
)
return project_path
def test_comprehensive_cpp_features(
cpp_comprehensive_project: Path,
mock_ingestor: MagicMock,
) -> None:
"""Test comprehensive C++ feature integration."""
test_file = cpp_comprehensive_project / "comprehensive_example.cpp"
test_file.write_text(
encoding="utf-8",
data="""
// Comprehensive C++ example integrating all major features
// Standard library includes
#include <iostream>
#include <string>
#include <vector>
#include <memory>
#include <algorithm>
#include <functional>
#include <map>
#include <thread>
#include <mutex>
#include <future>
// Local includes
#include "include/core/base.h"
#include "include/utils/helpers.h"
// Global namespace constants
const int GLOBAL_VERSION = 1;
// Anonymous namespace for internal linkage
namespace {
void internal_logger(const std::string& message) {
std::cout << "[INTERNAL] " << message << std::endl;
}
template<typename T>
class InternalCache {
private:
std::map<std::string, T> cache_;
mutable std::mutex mutex_;
public:
void store(const std::string& key, const T& value) {
std::lock_guard<std::mutex> lock(mutex_);
cache_[key] = value;
}
bool retrieve(const std::string& key, T& value) const {
std::lock_guard<std::mutex> lock(mutex_);
auto it = cache_.find(key);
if (it != cache_.end()) {
value = it->second;
return true;
}
return false;
}
size_t size() const {
std::lock_guard<std::mutex> lock(mutex_);
return cache_.size();
}
};
}
// Main application namespace
namespace app {
// Forward declarations
template<typename T> class DataProcessor;
class TaskManager;
// Type aliases and using declarations
using DataPtr = std::shared_ptr<std::string>;
using ProcessorPtr = std::unique_ptr<DataProcessor<std::string>>;
// Modern C++ features namespace
namespace modern {
// Lambda utilities
auto create_filter = [](const std::string& pattern) {
return [pattern](const std::string& text) {
return text.find(pattern) != std::string::npos;
};
};
// Variadic template function
template<typename... Args>
void print_all(Args... args) {
((std::cout << args << " "), ...); // C++17 fold expression
std::cout << std::endl;
}
// Constexpr function (compile-time computation)
constexpr int factorial(int n) {
return (n <= 1) ? 1 : n * factorial(n - 1);
}
// SFINAE helper
template<typename T>
std::enable_if_t<std::is_arithmetic_v<T>, T>
safe_divide(T a, T b) {
return (b != T{}) ? a / b : T{};
}
// Perfect forwarding
template<typename T>
auto make_data_ptr(T&& value) {
return std::make_shared<std::string>(std::forward<T>(value));
}
}
// Abstract base class with virtual functions
class IProcessable {
public:
virtual ~IProcessable() = default;
virtual void process() = 0;
virtual std::string getType() const = 0;
virtual std::unique_ptr<IProcessable> clone() const = 0;
};
// Template base class inheriting from interface
template<typename T>
class DataProcessor : public core::Base<T>, public IProcessable {
protected:
T data_;
std::string name_;
static inline int instance_count_ = 0; // C++17 inline static
public:
explicit DataProcessor(const T& data, const std::string& name = "DefaultProcessor")
: data_(data), name_(name) {
++instance_count_;
internal_logger("DataProcessor created: " + name_);
}
virtual ~DataProcessor() {
--instance_count_;
internal_logger("DataProcessor destroyed: " + name_);
}
// Override pure virtual from core::Base
void process(const T& data) override {
data_ = data;
process(); // Call IProcessable::process
}
// Override pure virtual from core::Base
std::unique_ptr<T> clone() const override {
return std::make_unique<T>(data_);
}
// Override pure virtual from IProcessable
void process() override {
modern::print_all("Processing", name_, "with data:", data_);
}
std::string getType() const override {
return "DataProcessor<" + std::string(typeid(T).name()) + ">";
}
// Virtual function for derived classes
virtual void preProcess() {
internal_logger("Pre-processing in " + name_);
}
virtual void postProcess() {
internal_logger("Post-processing in " + name_);
}
// Template method pattern
void execute() {
preProcess();
process();
postProcess();
}
// Static methods
static int getInstanceCount() { return instance_count_; }
// Getters
const T& getData() const { return data_; }
const std::string& getName() const { return name_; }
};
// Specialized template for string processing
template<>
class DataProcessor<std::string> : public core::Base<std::string>, public IProcessable {
private:
std::string data_;
std::string name_;
static inline int instance_count_ = 0;
InternalCache<std::string> cache_;
public:
explicit DataProcessor(const std::string& data, const std::string& name = "StringProcessor")
: data_(data), name_(name) {
++instance_count_;
internal_logger("Specialized StringProcessor created: " + name_);
}
~DataProcessor() {
--instance_count_;
internal_logger("Specialized StringProcessor destroyed: " + name_);
}
void process(const std::string& data) override {
data_ = data;
process();
}
std::unique_ptr<std::string> clone() const override {
return std::make_unique<std::string>(data_);
}
void process() override {
// String-specific processing
std::string processed;
if (!cache_.retrieve(data_, processed)) {
processed = data_;
std::transform(processed.begin(), processed.end(), processed.begin(), ::toupper);
cache_.store(data_, processed);
}
modern::print_all("String processing result:", processed);
}
std::string getType() const override {
return "DataProcessor<std::string> [Specialized]";
}
std::unique_ptr<IProcessable> clone() const override {
return std::make_unique<DataProcessor<std::string>>(data_, name_);
}
static int getInstanceCount() { return instance_count_; }
// String-specific methods
void processWithFilter(const std::function<bool(const std::string&)>& filter) {
if (filter(data_)) {
process();
} else {
modern::print_all("String filtered out:", data_);
}
}
size_t getCacheSize() const { return cache_.size(); }
};
// Multiple inheritance example
class Loggable {
public:
virtual ~Loggable() = default;
virtual void log(const std::string& message) {
std::cout << "[LOG] " << message << std::endl;
}
};
class Configurable {
protected:
std::map<std::string, std::string> config_;
public:
virtual ~Configurable() = default;
void setConfig(const std::string& key, const std::string& value) {
config_[key] = value;
}
std::string getConfig(const std::string& key) const {
auto it = config_.find(key);
return (it != config_.end()) ? it->second : "";
}
};
// Advanced processor with multiple inheritance
class AdvancedProcessor : public DataProcessor<std::string>,
public Loggable,
public Configurable {
private:
std::vector<std::function<void(const std::string&)>> callbacks_;
public:
explicit AdvancedProcessor(const std::string& data)
: DataProcessor<std::string>(data, "AdvancedProcessor") {
setConfig("version", std::to_string(GLOBAL_VERSION));
setConfig("threading", "enabled");
}
void process() override {
log("Starting advanced processing for: " + getData());
// Call base class processing
DataProcessor<std::string>::process();
// Execute callbacks
for (const auto& callback : callbacks_) {
callback(getData());
}
log("Advanced processing completed");
}
void addCallback(std::function<void(const std::string&)> callback) {
callbacks_.push_back(std::move(callback));
}
void processAsync() {
auto future = std::async(std::launch::async, [this]() {
process();
return getData().length();
});
log("Async processing started, result length: " + std::to_string(future.get()));
}
std::unique_ptr<IProcessable> clone() const override {
auto cloned = std::make_unique<AdvancedProcessor>(getData());
cloned->config_ = config_; // Copy configuration
return cloned;
}
};
// Template class with template template parameter
template<template<typename> class ContainerTemplate, typename T>
class ContainerProcessor {
private:
ContainerTemplate<T> container_;
public:
void add(const T& item) {
container_.push_back(item);
}
template<typename Predicate>
void processIf(Predicate pred) {
std::for_each(container_.begin(), container_.end(), [&](const T& item) {
if (pred(item)) {
modern::print_all("Processing item:", item);
}
});
}
size_t size() const {
return container_.size();
}
auto begin() { return container_.begin(); }
auto end() { return container_.end(); }
auto begin() const { return container_.begin(); }
auto end() const { return container_.end(); }
};
// CRTP (Curiously Recurring Template Pattern)
template<typename Derived>
class Countable {
private:
static inline int count_ = 0;
public:
Countable() { ++count_; }
~Countable() { --count_; }
static int getCount() { return count_; }
void callDerived() {
static_cast<Derived*>(this)->derivedMethod();
}
};
class CountedProcessor : public Countable<CountedProcessor> {
public:
void derivedMethod() {
modern::print_all("CountedProcessor method called, total instances:", getCount());
}
};
// Factory pattern with templates
class ProcessorFactory {
public:
template<typename T>
static std::unique_ptr<DataProcessor<T>> create(const T& data, const std::string& name) {
return std::make_unique<DataProcessor<T>>(data, name);
}
static std::unique_ptr<AdvancedProcessor> createAdvanced(const std::string& data) {
auto processor = std::make_unique<AdvancedProcessor>(data);
// Add default callbacks
processor->addCallback([](const std::string& data) {
modern::print_all("Callback 1 processing:", data);
});
processor->addCallback([](const std::string& data) {
modern::print_all("Callback 2 processing:", data);
});
return processor;
}
};
}
// Using declarations and aliases
using namespace app;
using StringProcessor = DataProcessor<std::string>;
using IntProcessor = DataProcessor<int>;
void demonstrateComprehensiveCpp() {
modern::print_all("=== Comprehensive C++ Features Demo ===");
// Template instantiation and polymorphism
std::vector<std::unique_ptr<IProcessable>> processors;
// Create different types of processors
auto stringProc = ProcessorFactory::create<std::string>("Hello World", "StringProc1");
auto intProc = ProcessorFactory::create<int>(42, "IntProc1");
auto advancedProc = ProcessorFactory::createAdvanced("Advanced Data");
// Store in polymorphic container
processors.push_back(std::move(stringProc));
processors.push_back(std::move(intProc));
processors.push_back(std::move(advancedProc));
// Process all polymorphically
for (auto& processor : processors) {
modern::print_all("Processing type:", processor->getType());
processor->process();
// Clone and process again
auto cloned = processor->clone();
cloned->process();
}
// Template specialization usage
StringProcessor specialized("specialized string", "SpecializedProc");
specialized.execute(); // Uses template method pattern
// Modern C++ features
auto filter = modern::create_filter("special");
specialized.processWithFilter(filter);
// Lambda and algorithm usage
std::vector<std::string> data = {"hello", "world", "special", "test"};
std::sort(data.begin(), data.end(), [](const std::string& a, const std::string& b) {
return a.length() < b.length();
});
modern::print_all("Sorted data by length:");
for (const auto& item : data) {
std::cout << item << " ";
}
std::cout << std::endl;
// Template template parameter usage
ContainerProcessor<std::vector, std::string> containerProc;
for (const auto& item : data) {
containerProc.add(item);
}
containerProc.processIf([](const std::string& s) { return s.length() > 4; });
// CRTP usage
CountedProcessor counted1, counted2, counted3;
counted1.callDerived();
counted2.callDerived();
counted3.callDerived();
// Compile-time computation
constexpr int fact5 = modern::factorial(5);
modern::print_all("5! =", fact5);
// SFINAE usage
double result = modern::safe_divide(10.0, 3.0);
modern::print_all("Safe division result:", result);
// Perfect forwarding
auto dataPtr1 = modern::make_data_ptr(std::string("forwarded"));
auto dataPtr2 = modern::make_data_ptr("literal forwarded");
// Async processing
AdvancedProcessor asyncProc("async data");
asyncProc.processAsync();
// Show instance counts
modern::print_all("String processor instances:", StringProcessor::getInstanceCount());
modern::print_all("Int processor instances:", IntProcessor::getInstanceCount());
modern::print_all("Counted processor instances:", CountedProcessor::getCount());
modern::print_all("=== Demo Complete ===");
}
// Namespace alias and additional using
namespace short_name = app::modern;
void testNamespaceIntegration() {
short_name::print_all("Testing namespace alias");
// Cross-namespace function calls
std::vector<std::string> strings = {"a", "b", "c"};
std::string joined = utils::join(strings, ","); // Would call utils function
modern::print_all("Joined string:", joined);
}
// Template metaprogramming integration
template<int N>
struct CompileTimeProcessor {
static void process() {
modern::print_all("Compile-time processing for N =", N);
CompileTimeProcessor<N-1>::process();
}
};
template<>
struct CompileTimeProcessor<0> {
static void process() {
modern::print_all("Compile-time processing base case");
}
};
void testMetaprogramming() {
CompileTimeProcessor<3>::process();
}
// Main integration test
void runComprehensiveTest() {
internal_logger("Starting comprehensive C++ test");
demonstrateComprehensiveCpp();
testNamespaceIntegration();
testMetaprogramming();
internal_logger("Comprehensive C++ test completed");
}
""",
)
run_updater(cpp_comprehensive_project, mock_ingestor)
all_relationships = cast(
MagicMock, mock_ingestor.ensure_relationship_batch
).call_args_list
call_relationships = get_relationships(mock_ingestor, "CALLS")
[c for c in all_relationships if c.args[1] == "DEFINES"]
inherits_relationships = get_relationships(mock_ingestor, "INHERITS")
imports_relationships = get_relationships(mock_ingestor, "IMPORTS")
comprehensive_calls = [
call
for call in call_relationships
if "comprehensive_example" in call.args[0][2]
]
assert len(comprehensive_calls) >= 20, (
f"Expected at least 20 comprehensive calls, found {len(comprehensive_calls)}"
)
comprehensive_inherits = [
call
for call in inherits_relationships
if "comprehensive_example" in call.args[0][2]
]
assert len(comprehensive_inherits) >= 8, (
f"Expected at least 8 inheritance relationships, found {len(comprehensive_inherits)}"
)
comprehensive_imports = [
call
for call in imports_relationships
if "comprehensive_example" in call.args[0][2]
]
assert len(comprehensive_imports) >= 10, (
f"Expected at least 10 include relationships, found {len(comprehensive_imports)}"
)
expected_classes = [
"DataProcessor",
"AdvancedProcessor",
"ContainerProcessor",
"CountedProcessor",
"ProcessorFactory",
"InternalCache",
]
created_classes = get_node_names(mock_ingestor, "Class")
found_complex_classes = [
cls
for cls in created_classes
if any(expected in cls for expected in expected_classes)
]
assert len(found_complex_classes) >= 4, (
f"Expected at least 4 complex classes, found {len(found_complex_classes)}: {found_complex_classes}"
)
expected_functions = [
"create_filter",
"print_all",
"factorial",
"safe_divide",
"make_data_ptr",
"demonstrateComprehensiveCpp",
"runComprehensiveTest",
]
created_functions = get_node_names(mock_ingestor, "Function")
found_modern_functions = [
func
for func in created_functions
if any(expected in func for expected in expected_functions)
]
assert len(found_modern_functions) >= 4, (
f"Expected at least 4 modern C++ functions, found {len(found_modern_functions)}: {found_modern_functions}"
)
def test_real_world_cpp_scenario(
cpp_comprehensive_project: Path,
mock_ingestor: MagicMock,
) -> None:
"""Test a real-world C++ scenario combining multiple files and advanced features."""
header_file = cpp_comprehensive_project / "include" / "engine.h"
header_file.write_text(
encoding="utf-8",
data="""
#pragma once
#include <memory>
#include <vector>
#include <string>
#include <functional>
namespace engine {
template<typename T>
class Component {
public:
virtual ~Component() = default;
virtual void update(const T& data) = 0;
virtual std::string getType() const = 0;
};
class Entity {
private:
std::vector<std::unique_ptr<Component<void>>> components_;
std::string name_;
public:
explicit Entity(const std::string& name);
~Entity();
template<typename ComponentType, typename... Args>
void addComponent(Args&&... args);
template<typename ComponentType>
ComponentType* getComponent();
void update();
const std::string& getName() const;
};
class System {
public:
virtual ~System() = default;
virtual void process(std::vector<Entity*>& entities) = 0;
};
}
""",
)
impl_file = cpp_comprehensive_project / "src" / "engine.cpp"
impl_file.write_text(
encoding="utf-8",
data="""
#include "../include/engine.h"
#include <iostream>
#include <algorithm>
namespace engine {
// Entity implementation
Entity::Entity(const std::string& name) : name_(name) {
std::cout << "Entity created: " << name_ << std::endl;
}
Entity::~Entity() {
std::cout << "Entity destroyed: " << name_ << std::endl;
}
void Entity::update() {
for (auto& component : components_) {
if (component) {
component->update(); // Would need void specialization
}
}
}
const std::string& Entity::getName() const {
return name_;
}
// Specific component implementations
class RenderComponent : public Component<void> {
private:
std::string mesh_name_;
public:
explicit RenderComponent(const std::string& mesh) : mesh_name_(mesh) {}
void update(const void&) override {
std::cout << "Rendering mesh: " << mesh_name_ << std::endl;
}
std::string getType() const override {
return "RenderComponent";
}
};
class PhysicsComponent : public Component<void> {
private:
float velocity_x_, velocity_y_;
public:
PhysicsComponent(float vx, float vy) : velocity_x_(vx), velocity_y_(vy) {}
void update(const void&) override {
std::cout << "Physics update: velocity(" << velocity_x_ << ", " << velocity_y_ << ")" << std::endl;
}
std::string getType() const override {
return "PhysicsComponent";
}
void setVelocity(float vx, float vy) {
velocity_x_ = vx;
velocity_y_ = vy;
}
};
// System implementations
class RenderSystem : public System {
public:
void process(std::vector<Entity*>& entities) override {
std::cout << "RenderSystem processing " << entities.size() << " entities" << std::endl;
std::for_each(entities.begin(), entities.end(), [](Entity* entity) {
if (entity) {
// Would check for RenderComponent and process
std::cout << "Processing entity: " << entity->getName() << std::endl;
}
});
}
};
class PhysicsSystem : public System {
public:
void process(std::vector<Entity*>& entities) override {
std::cout << "PhysicsSystem processing " << entities.size() << " entities" << std::endl;
for (auto* entity : entities) {
if (entity) {
// Would check for PhysicsComponent and process
entity->update();
}
}
}
};
}
// Game engine usage example
void runGameEngineExample() {
using namespace engine;
// Create entities
auto player = std::make_unique<Entity>("Player");
auto enemy = std::make_unique<Entity>("Enemy");
// Add components (simplified, would use template methods)
// player->addComponent<RenderComponent>("player_mesh.obj");
// player->addComponent<PhysicsComponent>(1.0f, 0.0f);
// Create systems
auto renderSystem = std::make_unique<RenderSystem>();
auto physicsSystem = std::make_unique<PhysicsSystem>();
// Process entities
std::vector<Entity*> entities = {player.get(), enemy.get()};
renderSystem->process(entities);
physicsSystem->process(entities);
std::cout << "Game engine example completed" << std::endl;
}
""",
)
main_file = cpp_comprehensive_project / "src" / "main.cpp"
main_file.write_text(
encoding="utf-8",
data="""
#include "../include/engine.h"
#include <iostream>
#include <memory>
#include <vector>
// Forward declaration from engine.cpp
void runGameEngineExample();
int main() {
try {
std::cout << "Starting real-world C++ application..." << std::endl;
runGameEngineExample();
std::cout << "Application completed successfully." << std::endl;
return 0;
} catch (const std::exception& e) {
std::cerr << "Error: " << e.what() << std::endl;
return 1;
}
}
""",
)
run_updater(cpp_comprehensive_project, mock_ingestor)
imports_relationships = get_relationships(mock_ingestor, "IMPORTS")
inherits_relationships = get_relationships(mock_ingestor, "INHERITS")
header_imports = [
call
for call in imports_relationships
if "engine.h" in call.args[2][2] or "iostream" in call.args[2][2]
]
assert len(header_imports) >= 2, (
f"Expected at least 2 header imports, found {len(header_imports)}"
)
component_inheritance = [
call
for call in inherits_relationships
if "Component" in call.args[2][2] or "System" in call.args[2][2]
]
assert len(component_inheritance) >= 2, (
f"Expected at least 2 component inheritance relationships, found {len(component_inheritance)}"
)
def test_cpp_comprehensive_complete() -> None:
"""Mark comprehensive C++ testing as complete."""
print("Coverage includes:")
print(" - Basic syntax (classes, functions, namespaces)")
print(" - Include directives and header relationships")
print(" - Complex inheritance hierarchies")
print(" - Template programming and metaprogramming")
print(" - Namespace management and qualified names")
print(" - Modern C++ features integration")
print(" - Real-world multi-file scenarios")
print(" - Cross-namespace and cross-file relationships")
assert True