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kannaka-labs/QuantumOS docs/TESTING_FRAMEWORK.md · 2026-09-06 · source ↗ · edit ↗

⚠️ Historical design document. This predates the implementation and describes original intent, not the shipped system. For the as-built architecture see the Architecture Decision Records and the CHANGELOG; where they disagree with this file, they are correct.

QuantumOS Testing Framework

Testing Philosophy

Core Principles

  1. Test-Driven Development - Tests written before implementation
  2. Comprehensive Coverage - Unit, integration, and system tests
  3. Quantum-Aware Testing - Test quantum-specific behaviors
  4. Automated CI/CD - All tests run automatically
  5. Performance Regression Detection - Continuous performance monitoring

Test Categories

1. Unit Tests

Scope: Individual functions and modules in isolation

Kernel Unit Tests

// tests/kernel/test_memory.c
#include <kernel/memory.h>
#include <test/test_framework.h>

TEST(test_memory_allocation) {
    void *ptr;
    size_t size = 4096;
    
    // Test basic allocation
    ASSERT_EQ(memory_alloc(&ptr, size, MEM_READ | MEM_WRITE), MEM_SUCCESS);
    ASSERT_NE(ptr, NULL);
    
    // Test memory access
    *((uint32_t*)ptr) = 0x12345678;
    ASSERT_EQ(*((uint32_t*)ptr), 0x12345678);
    
    // Test deallocation
    ASSERT_EQ(memory_free(ptr, size), MEM_SUCCESS);
    
    PASS();
}

TEST(test_memory_protection) {
    void *ptr;
    size_t size = 4096;
    
    // Allocate read-only memory
    ASSERT_EQ(memory_alloc(&ptr, size, MEM_READ), MEM_SUCCESS);
    
    // Test write protection (should cause fault)
    // This would be tested in a separate process with fault handling
    ASSERT_NE(test_write_fault(ptr), 0);
    
    ASSERT_EQ(memory_free(ptr, size), MEM_SUCCESS);
    
    PASS();
}

Quantum Unit Tests

// tests/quantum/test_qubit_management.c
#include <kernel/quantum_types.h>
#include <test/test_framework.h>

TEST(test_qubit_allocation) {
    quantum_resource_t *qubit;
    
    // Test single qubit allocation
    ASSERT_EQ(quantum_qubit_allocate(1, &qubit), Q_SUCCESS);
    ASSERT_NE(qubit, NULL);
    ASSERT_EQ(qubit->owner_process, 1);
    ASSERT_EQ(qubit->is_available, false);
    
    // Test qubit release
    ASSERT_EQ(quantum_qubit_release(qubit), Q_SUCCESS);
    
    PASS();
}

TEST(test_coherence_tracking) {
    quantum_resource_t *qubit;
    uint64_t remaining_time;
    
    // Allocate qubit with known coherence time
    ASSERT_EQ(quantum_qubit_allocate(1, &qubit), Q_SUCCESS);
    
    // Check initial coherence
    ASSERT_EQ(quantum_coherence_check(qubit, &remaining_time), Q_SUCCESS);
    ASSERT_GT(remaining_time, 0);
    
    // Simulate time passage
    simulate_time_passage(1000000);  // 1ms
    
    // Check coherence decay
    ASSERT_EQ(quantum_coherence_check(qubit, &remaining_time), Q_SUCCESS);
    ASSERT_LT(remaining_time, qubit->coherence_time);
    
    ASSERT_EQ(quantum_qubit_release(qubit), Q_SUCCESS);
    
    PASS();
}

2. Integration Tests

Scope: Multiple components working together

IPC Integration Tests

// tests/integration/test_ipc.c
#include <kernel/ipc.h>
#include <test/test_framework.h>

TEST(test_ipc_message_passing) {
    process_t *sender, *receiver;
    ipc_message_t msg, received_msg;
    uint32_t sender_id;
    
    // Create test processes
    ASSERT_EQ(process_create("sender", 0, &sender), PROC_SUCCESS);
    ASSERT_EQ(process_create("receiver", 0, &receiver), PROC_SUCCESS);
    
    // Prepare message
    msg.sender_id = sender->pid;
    msg.receiver_id = receiver->pid;
    msg.message_type = 1;
    msg.length = 4;
    *((uint32_t*)msg.data) = 0x12345678;
    
    // Send message
    ASSERT_EQ(ipc_send(receiver->pid, &msg), IPC_SUCCESS);
    
    // Receive message
    ASSERT_EQ(ipc_receive(&sender_id, &received_msg, 1000000), IPC_SUCCESS);
    ASSERT_EQ(sender_id, sender->pid);
    ASSERT_EQ(received_msg.message_type, 1);
    ASSERT_EQ(received_msg.length, 4);
    ASSERT_EQ(*((uint32_t*)received_msg.data), 0x12345678);
    
    // Cleanup
    ASSERT_EQ(process_destroy(sender->pid), PROC_SUCCESS);
    ASSERT_EQ(process_destroy(receiver->pid), PROC_SUCCESS);
    
    PASS();
}

Service Integration Tests

// tests/integration/test_services.c
#include <services/service_manager.h>
#include <test/test_framework.h>

TEST(test_service_startup_sequence) {
    service_info_t services[8];
    uint32_t service_count;
    
    // Start service manager
    ASSERT_EQ(start_service_manager(), SVC_SUCCESS);
    
    // Wait for essential services
    ASSERT_EQ(wait_for_services(30000), SVC_SUCCESS);  // 30 second timeout
    
    // List running services
    ASSERT_EQ(service_list(services, 8, &service_count), SVC_SUCCESS);
    ASSERT_GT(service_count, 0);
    
    // Verify essential services are running
    bool memory_manager_running = false;
    bool quantum_scheduler_running = false;
    
    for (uint32_t i = 0; i < service_count; i++) {
        if (strcmp(services[i].name, "memory-manager") == 0) {
            memory_manager_running = true;
        }
        if (strcmp(services[i].name, "quantum-scheduler") == 0) {
            quantum_scheduler_running = true;
        }
    }
    
    ASSERT_TRUE(memory_manager_running);
    ASSERT_TRUE(quantum_scheduler_running);
    
    PASS();
}

3. System Tests

Scope: Full system behavior under realistic conditions

Boot System Tests

// tests/system/test_boot.c
#include <kernel/boot.h>
#include <test/test_framework.h>

TEST(test_complete_boot_sequence) {
    boot_result_t result;
    
    // Simulate complete boot
    result = simulate_boot_sequence();
    
    ASSERT_EQ(result, BOOT_SUCCESS);
    
    // Verify system state
    ASSERT_TRUE(hal_is_initialized());
    ASSERT_TRUE(memory_is_initialized());
    ASSERT_TRUE(interrupts_are_enabled());
    ASSERT_TRUE(capabilities_are_established());
    ASSERT_TRUE(ipc_is_functional());
    
    // Verify services are running
    ASSERT_TRUE(service_is_running("memory-manager"));
    ASSERT_TRUE(service_is_running("quantum-scheduler"));
    ASSERT_TRUE(service_is_running("device-manager"));
    
    PASS();
}

Quantum System Tests

// tests/system/test_quantum_system.c
#include <kernel/quantum.h>
#include <test/test_framework.h>

TEST(test_quantum_workload_execution) {
    quantum_context_t *context;
    circuit_graph_t *circuit;
    measurement_event_t *measurement;
    
    // Create quantum context
    ASSERT_EQ(quantum_context_create(&context), Q_SUCCESS);
    
    // Build simple quantum circuit (Hadamard + Measurement)
    ASSERT_EQ(build_test_circuit(&circuit), Q_SUCCESS);
    
    // Execute circuit
    ASSERT_EQ(quantum_execute_circuit(context, circuit), Q_SUCCESS);
    
    // Get measurement result
    ASSERT_EQ(quantum_get_measurement(context, &measurement), Q_SUCCESS);
    ASSERT_NE(measurement, NULL);
    ASSERT_TRUE(measurement->result == 0 || measurement->result == 1);
    ASSERT_GT(measurement->probability, 0.0);
    ASSERT_LT(measurement->probability, 1.0);
    
    // Cleanup
    ASSERT_EQ(quantum_context_destroy(context), Q_SUCCESS);
    
    PASS();
}

Test Framework Implementation

Test Framework Core

// test/test_framework.h
#include <stdint.h>
#include <stdbool.h>

typedef enum {
    TEST_PASS = 0,
    TEST_FAIL = 1,
    TEST_SKIP = 2,
    TEST_ERROR = 3
} test_result_t;

typedef struct {
    const char *name;
    test_result_t (*test_func)(void);
    uint32_t timeout_ms;
    bool enabled;
} test_case_t;

typedef struct {
    uint32_t total_tests;
    uint32_t passed_tests;
    uint32_t failed_tests;
    uint32_t skipped_tests;
    uint32_t error_tests;
    uint64_t total_time_ms;
} test_stats_t;

// Test macros
#define TEST(name) \
    static test_result_t test_##name(void); \
    static test_case_t test_case_##name = { \
        .name = #name, \
        .test_func = test_##name, \
        .timeout_ms = 5000, \
        .enabled = true \
    }; \
    __attribute__((constructor)) \
    static void register_test_##name(void) { \
        test_register(&test_case_##name); \
    } \
    static test_result_t test_##name(void)

#define ASSERT_EQ(a, b) \
    do { \
        if ((a) != (b)) { \
            test_log_fail("ASSERT_EQ failed: %s != %s", #a, #b); \
            return TEST_FAIL; \
        } \
    } while(0)

#define ASSERT_NE(a, b) \
    do { \
        if ((a) == (b)) { \
            test_log_fail("ASSERT_NE failed: %s == %s", #a, #b); \
            return TEST_FAIL; \
        } \
    } while(0)

#define ASSERT_TRUE(cond) \
    do { \
        if (!(cond)) { \
            test_log_fail("ASSERT_TRUE failed: %s", #cond); \
            return TEST_FAIL; \
        } \
    } while(0)

#define ASSERT_FALSE(cond) \
    do { \
        if (cond) { \
            test_log_fail("ASSERT_FALSE failed: %s", #cond); \
            return TEST_FAIL; \
        } \
    } while(0)

#define PASS() return TEST_PASS
#define SKIP() return TEST_SKIP

Test Runner

// test/test_runner.c
#include <test/test_framework.h>

static test_case_t *test_registry[1024];
static size_t test_count = 0;

void test_register(test_case_t *test_case) {
    if (test_count < 1024) {
        test_registry[test_count++] = test_case;
    }
}

int run_all_tests(void) {
    test_stats_t stats = {0};
    uint64_t start_time = get_time_ms();
    
    printf("Running %zu tests...\n", test_count);
    
    for (size_t i = 0; i < test_count; i++) {
        test_case_t *test = test_registry[i];
        
        if (!test->enabled) {
            stats.skipped_tests++;
            printf("SKIP: %s\n", test->name);
            continue;
        }
        
        printf("RUN:  %s... ", test->name);
        fflush(stdout);
        
        uint64_t test_start = get_time_ms();
        test_result_t result = test->test_func();
        uint64_t test_time = get_time_ms() - test_start;
        
        stats.total_tests++;
        stats.total_time_ms += test_time;
        
        switch (result) {
            case TEST_PASS:
                stats.passed_tests++;
                printf("PASS (%llums)\n", test_time);
                break;
            case TEST_FAIL:
                stats.failed_tests++;
                printf("FAIL (%llums)\n", test_time);
                break;
            case TEST_SKIP:
                stats.skipped_tests++;
                printf("SKIP (%llums)\n", test_time);
                break;
            case TEST_ERROR:
                stats.error_tests++;
                printf("ERROR (%llums)\n", test_time);
                break;
        }
    }
    
    printf("\nTest Results:\n");
    printf("Total:  %u\n", stats.total_tests);
    printf("Passed: %u\n", stats.passed_tests);
    printf("Failed: %u\n", stats.failed_tests);
    printf("Skipped: %u\n", stats.skipped_tests);
    printf("Errors: %u\n", stats.error_tests);
    printf("Time:   %llums\n", stats.total_time_ms);
    
    return (stats.failed_tests + stats.error_tests) > 0 ? 1 : 0;
}

Performance Testing

Benchmark Framework

// test/benchmark.h
typedef struct {
    const char *name;
    void (*benchmark_func)(void);
    uint64_t iterations;
    uint64_t target_time_ns;
} benchmark_t;

#define BENCHMARK(name, iterations) \
    static void benchmark_##name(void); \
    static benchmark_t benchmark_##name##_def = { \
        .name = #name, \
        .benchmark_func = benchmark_##name, \
        .iterations = iterations, \
        .target_time_ns = 1000000  // 1ms target
    }; \
    __attribute__((constructor)) \
    static void register_benchmark_##name(void) { \
        benchmark_register(&benchmark_##name##_def); \
    } \
    static void benchmark_##name(void)

// Benchmark macros
#define BENCHMARK_START() \
    uint64_t start_time = get_time_ns()

#define BENCHMARK_END() \
    uint64_t end_time = get_time_ns(); \
    uint64_t duration = end_time - start_time; \
    benchmark_record_duration(duration)

Performance Benchmarks

// test/benchmarks/performance.c
#include <test/benchmark.h>

BENCHMARK(ipc_latency, 10000) {
    ipc_message_t msg;
    uint32_t sender_id;
    
    BENCHMARK_START();
    
    // Measure IPC round-trip time
    ipc_send(test_receiver_pid, &msg);
    ipc_receive(&sender_id, &msg, 1000000);
    
    BENCHMARK_END();
}

BENCHMARK(memory_allocation, 100000) {
    void *ptr;
    
    BENCHMARK_START();
    
    memory_alloc(&ptr, 4096, MEM_READ | MEM_WRITE);
    memory_free(ptr, 4096);
    
    BENCHMARK_END();
}

BENCHMARK(quantum_gate_execution, 1000) {
    quantum_context_t *context;
    quantum_gate_t gate;
    
    BENCHMARK_START();
    
    quantum_execute_gate(context, &gate);
    
    BENCHMARK_END();
}

Quantum-Specific Testing

Quantum Test Utilities

// test/quantum_test_utils.h
#include <kernel/quantum_types.h>

// Test circuit builder
typedef struct {
    circuit_graph_t *circuit;
    uint32_t next_gate_id;
} test_circuit_builder_t;

test_circuit_builder_t* test_circuit_create(uint32_t num_qubits);
void test_circuit_add_gate(test_circuit_builder_t *builder, uint32_t gate_type, 
                          uint32_t *targets, uint32_t num_targets, double param);
circuit_graph_t* test_circuit_finalize(test_circuit_builder_t *builder);

// Quantum state verification
bool test_verify_quantum_state(quantum_context_t *context, const double *expected_amplitudes);
bool test_verify_measurement_distribution(quantum_context_t *context, const double *expected_probs);

// Coherence testing
void test_simulate_decoherence(quantum_context_t *context, uint64_t time_ns);
bool test_check_coherence_preservation(quantum_context_t *context, uint64_t max_decoherence);

Quantum Error Injection

// test/quantum_error_injection.c
typedef enum {
    ERROR_TYPE_BIT_FLIP,
    ERROR_TYPE_PHASE_FLIP,
    ERROR_TYPE_DECOHERENCE,
    ERROR_TYPE_MEASUREMENT_ERROR,
    ERROR_TYPE_GATE_ERROR
} quantum_error_type_t;

void quantum_error_inject(quantum_context_t *context, quantum_error_type_t error_type, 
                          uint32_t qubit_id, double error_rate);

void test_quantum_error_correction(void) {
    quantum_context_t *context;
    circuit_graph_t *circuit;
    
    // Create context with error correction
    quantum_context_create_with_error_correction(&context);
    
    // Build circuit with error correction codes
    build_error_corrected_circuit(&circuit);
    
    // Inject errors
    quantum_error_inject(context, ERROR_TYPE_BIT_FLIP, 0, 0.01);
    quantum_error_inject(context, ERROR_TYPE_DECOHERENCE, 1, 0.005);
    
    // Execute and verify error correction
    quantum_execute_circuit(context, circuit);
    
    // Verify errors were corrected
    ASSERT_TRUE(test_verify_error_correction(context));
    
    PASS();
}

Test Organization

Directory Structure

tests/
├── unit/
│   ├── kernel/
│   │   ├── test_memory.c
│   │   ├── test_ipc.c
│   │   ├── test_capabilities.c
│   │   └── test_process.c
│   ├── quantum/
│   │   ├── test_qubit_management.c
│   │   ├── test_circuit_execution.c
│   │   └── test_coherence_tracking.c
│   ├── services/
│   │   ├── test_memory_manager.c
│   │   ├── test_quantum_scheduler.c
│   │   └── test_device_manager.c
│   └── hal/
│       ├── test_x86_64.c
│       ├── test_arm64.c
│       └── test_riscv64.c
├── integration/
│   ├── test_kernel_services.c
│   ├── test_ipc_integration.c
│   ├── test_quantum_integration.c
│   └── test_service_communication.c
├── system/
│   ├── test_boot_sequence.c
│   ├── test_quantum_workloads.c
│   ├── test_multi_process.c
│   └── test_error_recovery.c
├── benchmarks/
│   ├── performance.c
│   ├── quantum_performance.c
│   └── scalability.c
├── quantum/
│   ├── quantum_test_utils.c
│   ├── quantum_error_injection.c
│   └── quantum_state_verification.c
├── test_framework/
│   ├── test_framework.c
│   ├── test_runner.c
│   ├── benchmark.c
│   └── mock_hal.c
└── Makefile

Continuous Integration

CI Configuration

# .github/workflows/test.yml
name: QuantumOS Tests

on: [push, pull_request]

jobs:
  test:
    strategy:
      matrix:
        arch: [x86_64, arm64, riscv64]
        test_type: [unit, integration, system, benchmark]
    
    runs-on: ubuntu-latest
    
    steps:
    - uses: actions/checkout@v3
    
    - name: Setup cross-compiler
      run: |
        sudo apt-get install gcc-${{ matrix.arch }}-elf
    
    - name: Build tests
      run: |
        make tests ARCH=${{ matrix.arch }} TYPE=${{ matrix.test_type }}
    
    - name: Run tests
      run: |
        make run-tests ARCH=${{ matrix.arch }} TYPE=${{ matrix.test_type }}
    
    - name: Upload test results
      uses: actions/upload-artifact@v3
      with:
        name: test-results-${{ matrix.arch }}-${{ matrix.test_type }}
        path: test-results/

Test Coverage

# Coverage targets
coverage:
	make clean
	make CFLAGS="--coverage" all
	./run_all_tests
	gcov $(shell find . -name "*.c")
	lcov --capture --directory . --output-file coverage.info
	genhtml coverage.info --output-directory coverage_html

coverage-upload:
	# Upload to coverage service

Success Criteria

  • Unit tests cover all kernel modules (>90% code coverage)
  • Integration tests verify component interaction
  • System tests validate complete workflows
  • Quantum tests verify quantum-specific behavior
  • Performance benchmarks meet targets
  • All tests pass on supported architectures
  • CI/CD pipeline runs automatically
  • Test execution time is reasonable (<5 minutes for full suite)

Performance Targets

  • Unit Test Suite: < 30 seconds
  • Integration Test Suite: < 2 minutes
  • System Test Suite: < 5 minutes
  • Benchmark Suite: < 10 minutes
  • Full Test Coverage: > 90% code coverage
  • Test Reliability: < 1% flaky test rate

This comprehensive testing framework ensures QuantumOS reliability while providing specialized testing for quantum-aware features and maintaining high performance standards.