diff --git a/CMakeLists.txt b/CMakeLists.txt
index 55bf825f..1056fc8b 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -106,3 +106,12 @@ add_subdirectory(src)
 if (BUILD_QT_SDL)
     add_subdirectory(src/frontend/qt_sdl)
 endif()
+
+option(MELONDS_BUILD_TESTS "Build the melonDS test suite." OFF)
+
+if (MELONDS_BUILD_TESTS)
+    include(CTest)
+    message(STATUS "Enabling melonDS test suite.")
+    enable_testing()
+    add_subdirectory(test)
+endif()
\ No newline at end of file
diff --git a/test/CMakeLists.txt b/test/CMakeLists.txt
new file mode 100644
index 00000000..b1858b49
--- /dev/null
+++ b/test/CMakeLists.txt
@@ -0,0 +1,64 @@
+cmake_policy(SET CMP0110 NEW)
+
+if (NOT NDS_ROM)
+    message(WARNING "NDS_ROM must be set to the path of an NDS ROM; tests that require one won't run.")
+    set(NDS_ROM "NDS_ROM-NOTFOUND" CACHE FILEPATH "Path to an NDS ROM" FORCE)
+else()
+    message(DEBUG "NDS_ROM: ${NDS_ROM}")
+endif()
+
+include(CMakePrintHelpers)
+
+function(add_melonds_test)
+    set(options WILL_FAIL ARM7_BIOS ARM9_BIOS ARM7_DSI_BIOS ARM9_DSI_BIOS NDS_FIRMWARE DSI_FIRMWARE DSI_NAND DISABLED)
+    set(oneValueArgs TARGET NAME ROM)
+    set(multiValueArgs ARGS LABEL)
+    cmake_parse_arguments(PARSE_ARGV 0 MELONDS_TEST "${options}" "${oneValueArgs}" "${multiValueArgs}")
+
+    add_test(
+        NAME "${MELONDS_TEST_NAME}"
+        COMMAND "${MELONDS_TEST_TARGET}"
+        ${MELONDS_TEST_ARGS}
+        COMMAND_EXPAND_LISTS
+    )
+
+    if (MELONDS_TEST_ROM)
+        list(APPEND REQUIRED_FILES "${MELONDS_TEST_ROM}")
+    endif()
+
+    macro(expose_system_file SYSFILE)
+        if (MELONDS_TEST_${SYSFILE})
+            list(APPEND REQUIRED_FILES "${${SYSFILE}}")
+            list(APPEND ENVIRONMENT "${SYSFILE}=${${SYSFILE}}")
+        endif()
+    endmacro()
+
+    expose_system_file(ARM7_BIOS)
+    expose_system_file(ARM9_BIOS)
+    expose_system_file(ARM7_DSI_BIOS)
+    expose_system_file(ARM9_DSI_BIOS)
+    expose_system_file(NDS_FIRMWARE)
+    expose_system_file(DSI_FIRMWARE)
+    expose_system_file(DSI_NAND)
+
+    set_tests_properties("${MELONDS_TEST_NAME}" PROPERTIES LABELS "${MELONDS_TEST_LABEL}") # This is already a list
+    set_tests_properties("${MELONDS_TEST_NAME}" PROPERTIES ENVIRONMENT "${ENVIRONMENT}")
+    set_tests_properties("${MELONDS_TEST_NAME}" PROPERTIES REQUIRED_FILES "${REQUIRED_FILES}")
+
+    if (MELONDS_TEST_WILL_FAIL)
+        set_tests_properties("${MELONDS_TEST_NAME}" PROPERTIES WILL_FAIL TRUE)
+    endif()
+
+    if (MELONDS_TEST_DISABLED)
+        set_tests_properties("${MELONDS_TEST_NAME}" PROPERTIES DISABLED TRUE)
+    endif()
+endfunction()
+
+function(add_test_executable TEST_PROGRAM)
+    add_executable("${TEST_PROGRAM}" "${TEST_PROGRAM}.cpp")
+    target_link_libraries("${TEST_PROGRAM}" PRIVATE core melonDS-tests-common)
+    target_include_directories("${TEST_PROGRAM}" PRIVATE "${CMAKE_CURRENT_SOURCE_DIR}/../../src")
+endfunction()
+
+add_subdirectory(common)
+add_subdirectory(cases)
diff --git a/test/cases/CMakeLists.txt b/test/cases/CMakeLists.txt
new file mode 100644
index 00000000..f8f18380
--- /dev/null
+++ b/test/cases/CMakeLists.txt
@@ -0,0 +1,5 @@
+# Tests can be grouped into subdirectories for better organization.
+# Each subdirectory must contain a CMakeLists.txt file
+# that lists the test executables *and* the tests themselves.
+
+add_subdirectory(basic)
\ No newline at end of file
diff --git a/test/cases/basic/CMakeLists.txt b/test/cases/basic/CMakeLists.txt
new file mode 100644
index 00000000..ba94b669
--- /dev/null
+++ b/test/cases/basic/CMakeLists.txt
@@ -0,0 +1,22 @@
+# Test executables must be defined separately from the actual tests,
+# as the same test executable might be used for multiple tests
+# (with different parameters each time).
+
+add_test_executable(NDSCreated)
+add_test_executable(MultipleNDSCreated)
+add_test_executable(MultipleNDSCreatedInDifferentOrder)
+
+add_melonds_test(
+    NAME "NDS is created and destroyed"
+    TARGET NDSCreated
+)
+
+add_melonds_test(
+    NAME "Multiple NDS systems are created and destroyed"
+    TARGET MultipleNDSCreated
+)
+
+add_melonds_test(
+    NAME "Multiple NDS systems are created and destroyed in different orders"
+    TARGET MultipleNDSCreatedInDifferentOrder
+)
\ No newline at end of file
diff --git a/test/cases/basic/MultipleNDSCreated.cpp b/test/cases/basic/MultipleNDSCreated.cpp
new file mode 100644
index 00000000..a9d07e8a
--- /dev/null
+++ b/test/cases/basic/MultipleNDSCreated.cpp
@@ -0,0 +1,28 @@
+/*
+    Copyright 2016-2023 melonDS team
+
+    This file is part of melonDS.
+
+    melonDS is free software: you can redistribute it and/or modify it under
+    the terms of the GNU General Public License as published by the Free
+    Software Foundation, either version 3 of the License, or (at your option)
+    any later version.
+
+    melonDS is distributed in the hope that it will be useful, but WITHOUT ANY
+    WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+    FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License along
+    with melonDS. If not, see http://www.gnu.org/licenses/.
+*/
+
+#include "NDS.h"
+
+int main()
+{
+    // volatile so it's not optimized out
+    volatile auto nds1 = std::make_unique<melonDS::NDS>();
+    volatile auto nds2 = std::make_unique<melonDS::NDS>();
+    volatile auto nds3 = std::make_unique<melonDS::NDS>();
+    volatile auto nds4 = std::make_unique<melonDS::NDS>();
+}
\ No newline at end of file
diff --git a/test/cases/basic/MultipleNDSCreatedInDifferentOrder.cpp b/test/cases/basic/MultipleNDSCreatedInDifferentOrder.cpp
new file mode 100644
index 00000000..2acf0ff5
--- /dev/null
+++ b/test/cases/basic/MultipleNDSCreatedInDifferentOrder.cpp
@@ -0,0 +1,34 @@
+/*
+    Copyright 2016-2023 melonDS team
+
+    This file is part of melonDS.
+
+    melonDS is free software: you can redistribute it and/or modify it under
+    the terms of the GNU General Public License as published by the Free
+    Software Foundation, either version 3 of the License, or (at your option)
+    any later version.
+
+    melonDS is distributed in the hope that it will be useful, but WITHOUT ANY
+    WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+    FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License along
+    with melonDS. If not, see http://www.gnu.org/licenses/.
+*/
+
+#include <memory>
+#include "NDS.h"
+
+int main()
+{
+    // volatile so it's not optimized out
+    auto nds1 = std::make_unique<volatile melonDS::NDS>();
+    auto nds2 = std::make_unique<volatile melonDS::NDS>();
+    auto nds3 = std::make_unique<volatile melonDS::NDS>();
+    auto nds4 = std::make_unique<volatile melonDS::NDS>();
+
+    nds3 = nullptr;
+    nds1 = nullptr;
+    nds4 = nullptr;
+    nds2 = nullptr;
+}
\ No newline at end of file
diff --git a/test/cases/basic/NDSCreated.cpp b/test/cases/basic/NDSCreated.cpp
new file mode 100644
index 00000000..8f559deb
--- /dev/null
+++ b/test/cases/basic/NDSCreated.cpp
@@ -0,0 +1,28 @@
+/*
+    Copyright 2016-2023 melonDS team
+
+    This file is part of melonDS.
+
+    melonDS is free software: you can redistribute it and/or modify it under
+    the terms of the GNU General Public License as published by the Free
+    Software Foundation, either version 3 of the License, or (at your option)
+    any later version.
+
+    melonDS is distributed in the hope that it will be useful, but WITHOUT ANY
+    WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+    FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License along
+    with melonDS. If not, see http://www.gnu.org/licenses/.
+*/
+
+#include <memory>
+#include "NDS.h"
+
+int main()
+{
+    // volatile so it's not optimized out
+    volatile auto nds = std::make_unique<melonDS::NDS>();
+
+    // NDS is probably waaaay too big for the stack
+}
\ No newline at end of file
diff --git a/test/common/CMakeLists.txt b/test/common/CMakeLists.txt
new file mode 100644
index 00000000..ae3acea8
--- /dev/null
+++ b/test/common/CMakeLists.txt
@@ -0,0 +1,13 @@
+include(FixInterfaceIncludes)
+
+add_library(melonDS-tests-common STATIC
+    Platform.cpp
+        TestCommon.cpp
+        TestCommon.h
+)
+
+# The test program is built with C++20 so we can use std::counting_semaphore
+set_target_properties(melonDS-tests-common PROPERTIES CXX_STANDARD 20)
+
+target_link_libraries(melonDS-tests-common PRIVATE core)
+target_include_directories(melonDS-tests-common PUBLIC "${CMAKE_CURRENT_SOURCE_DIR}/../../src")
\ No newline at end of file
diff --git a/test/common/Platform.cpp b/test/common/Platform.cpp
new file mode 100644
index 00000000..9d8b8eb8
--- /dev/null
+++ b/test/common/Platform.cpp
@@ -0,0 +1,316 @@
+/*
+    Copyright 2016-2023 melonDS team
+
+    This file is part of melonDS.
+
+    melonDS is free software: you can redistribute it and/or modify it under
+    the terms of the GNU General Public License as published by the Free
+    Software Foundation, either version 3 of the License, or (at your option)
+    any later version.
+
+    melonDS is distributed in the hope that it will be useful, but WITHOUT ANY
+    WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+    FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License along
+    with melonDS. If not, see http://www.gnu.org/licenses/.
+*/
+
+#include "Platform.h"
+
+#include <filesystem>
+#include <mutex>
+#include <semaphore>
+#include <thread>
+
+namespace melonDS::Platform
+{
+void SignalStop(StopReason reason) {}
+int InstanceID() { return 0; }
+
+std::string InstanceFileSuffix() { return ""; }
+
+constexpr char AccessMode(FileMode mode, bool file_exists)
+{
+    if (!(mode & FileMode::Write))
+        // If we're only opening the file for reading...
+            return 'r';
+
+    if (mode & (FileMode::NoCreate))
+        // If we're not allowed to create a new file...
+            return 'r'; // Open in "r+" mode (IsExtended will add the "+")
+
+    if ((mode & FileMode::Preserve) && file_exists)
+        // If we're not allowed to overwrite a file that already exists...
+            return 'r'; // Open in "r+" mode (IsExtended will add the "+")
+
+    return 'w';
+}
+
+constexpr bool IsExtended(FileMode mode)
+{
+    // fopen's "+" flag always opens the file for read/write
+    return (mode & FileMode::ReadWrite) == FileMode::ReadWrite;
+}
+
+static std::string GetModeString(FileMode mode, bool file_exists)
+{
+    std::string modeString;
+
+    modeString += AccessMode(mode, file_exists);
+
+    if (IsExtended(mode))
+        modeString += '+';
+
+    if (!(mode & FileMode::Text))
+        modeString += 'b';
+
+    return modeString;
+}
+
+FileHandle* OpenFile(const std::string& path, FileMode mode)
+{
+    if ((mode & FileMode::ReadWrite) == FileMode::None)
+    { // If we aren't reading or writing, then we can't open the file
+        Log(LogLevel::Error, "Attempted to open \"%s\" in neither read nor write mode (FileMode 0x%x)\n", path.c_str(), mode);
+        return nullptr;
+    }
+
+    bool file_exists = std::filesystem::exists(path);
+    std::string modeString = GetModeString(mode, file_exists);
+
+    FILE* file = fopen(path.c_str(), modeString.c_str());
+    if (file)
+    {
+        Log(LogLevel::Debug, "Opened \"%s\" with FileMode 0x%x (effective mode \"%s\")\n", path.c_str(), mode, modeString.c_str());
+        return reinterpret_cast<FileHandle *>(file);
+    }
+    else
+    {
+        Log(LogLevel::Warn, "Failed to open \"%s\" with FileMode 0x%x (effective mode \"%s\")\n", path.c_str(), mode, modeString.c_str());
+        return nullptr;
+    }
+}
+
+FileHandle* OpenLocalFile(const std::string& path, FileMode mode)
+{
+    return OpenFile(path, mode);
+}
+
+bool CloseFile(FileHandle* file)
+{
+    return fclose(reinterpret_cast<FILE *>(file)) == 0;
+}
+
+bool IsEndOfFile(FileHandle* file)
+{
+    return feof(reinterpret_cast<FILE *>(file)) != 0;
+}
+
+bool FileReadLine(char* str, int count, FileHandle* file)
+{
+    return fgets(str, count, reinterpret_cast<FILE *>(file)) != nullptr;
+}
+
+bool FileExists(const std::string& name)
+{
+    FileHandle* f = OpenFile(name, FileMode::Read);
+    if (!f) return false;
+    CloseFile(f);
+    return true;
+}
+
+bool LocalFileExists(const std::string& name)
+{
+    FileHandle* f = OpenLocalFile(name, FileMode::Read);
+    if (!f) return false;
+    CloseFile(f);
+    return true;
+}
+
+bool FileSeek(FileHandle* file, s64 offset, FileSeekOrigin origin)
+{
+    int stdorigin;
+    switch (origin)
+    {
+    case FileSeekOrigin::Start: stdorigin = SEEK_SET; break;
+    case FileSeekOrigin::Current: stdorigin = SEEK_CUR; break;
+    case FileSeekOrigin::End: stdorigin = SEEK_END; break;
+    }
+
+    return fseek(reinterpret_cast<FILE *>(file), offset, stdorigin) == 0;
+}
+
+void FileRewind(FileHandle* file)
+{
+    rewind(reinterpret_cast<FILE *>(file));
+}
+
+u64 FileRead(void* data, u64 size, u64 count, FileHandle* file)
+{
+    return fread(data, size, count, reinterpret_cast<FILE *>(file));
+}
+
+bool FileFlush(FileHandle* file)
+{
+    return fflush(reinterpret_cast<FILE *>(file)) == 0;
+}
+
+u64 FileWrite(const void* data, u64 size, u64 count, FileHandle* file)
+{
+    return fwrite(data, size, count, reinterpret_cast<FILE *>(file));
+}
+
+u64 FileWriteFormatted(FileHandle* file, const char* fmt, ...)
+{
+    if (fmt == nullptr)
+        return 0;
+
+    va_list args;
+    va_start(args, fmt);
+    u64 ret = vfprintf(reinterpret_cast<FILE *>(file), fmt, args);
+    va_end(args);
+    return ret;
+}
+
+u64 FileLength(FileHandle* file)
+{
+    FILE* stdfile = reinterpret_cast<FILE *>(file);
+    long pos = ftell(stdfile);
+    fseek(stdfile, 0, SEEK_END);
+    long len = ftell(stdfile);
+    fseek(stdfile, pos, SEEK_SET);
+    return len;
+}
+
+void Log(LogLevel level, const char* fmt, ...)
+{
+    if (fmt == nullptr)
+        return;
+
+    va_list args;
+    va_start(args, fmt);
+    vfprintf(stderr, fmt, args);
+    va_end(args);
+}
+
+struct Thread
+{
+    std::thread thread;
+};
+
+Thread* Thread_Create(std::function<void()> func)
+{
+    return new Thread { std::thread(func) };
+}
+
+void Thread_Free(Thread* thread)
+{
+    if (thread)
+    {
+        thread->thread.join();
+        delete thread;
+    }
+}
+
+void Thread_Wait(Thread* thread)
+{
+    if (thread)
+    {
+        thread->thread.join();
+    }
+}
+
+struct Semaphore
+{
+    std::counting_semaphore<> semaphore;
+
+    Semaphore() : semaphore(0) {}
+};
+
+Semaphore* Semaphore_Create()
+{
+    return new Semaphore;
+}
+
+void Semaphore_Free(Semaphore* sema)
+{
+    delete sema;
+}
+
+void Semaphore_Reset(Semaphore* sema)
+{
+    while (sema->semaphore.try_acquire());
+}
+
+void Semaphore_Wait(Semaphore* sema)
+{
+    sema->semaphore.acquire();
+}
+
+void Semaphore_Post(Semaphore* sema, int count)
+{
+    sema->semaphore.release(count);
+}
+
+struct Mutex
+{
+    std::mutex mutex;
+};
+
+Mutex* Mutex_Create()
+{
+    return new Mutex;
+}
+
+void Mutex_Free(Mutex* mutex)
+{
+    delete mutex;
+}
+
+void Mutex_Lock(Mutex* mutex)
+{
+    if (mutex)
+        mutex->mutex.lock();
+}
+
+void Mutex_Unlock(Mutex* mutex)
+{
+    if (mutex)
+        mutex->mutex.unlock();
+}
+
+bool Mutex_TryLock(Mutex* mutex)
+{
+    if (!mutex)
+        return false;
+
+    return mutex->mutex.try_lock();
+}
+
+void WriteNDSSave(const u8* savedata, u32 savelen, u32 writeoffset, u32 writelen) {}
+void WriteGBASave(const u8* savedata, u32 savelen, u32 writeoffset, u32 writelen) {}
+void WriteFirmware(const Firmware& firmware, u32 writeoffset, u32 writelen) {}
+void WriteDateTime(int year, int month, int day, int hour, int minute, int second) {}
+bool MP_Init() { return false; }
+void MP_DeInit() {}
+void MP_Begin() {}
+void MP_End() {}
+int MP_SendPacket(u8* data, int len, u64 timestamp) { return 0; }
+int MP_RecvPacket(u8* data, u64* timestamp) { return 0;}
+int MP_SendCmd(u8* data, int len, u64 timestamp) { return 0; }
+int MP_SendReply(u8* data, int len, u64 timestamp, u16 aid) { return 0;}
+int MP_SendAck(u8* data, int len, u64 timestamp) { return 0; }
+int MP_RecvHostPacket(u8* data, u64* timestamp) { return 0; }
+u16 MP_RecvReplies(u8* data, u64 timestamp, u16 aidmask) { return 0; }
+bool LAN_Init() { return false; }
+void LAN_DeInit() {}
+int LAN_SendPacket(u8* data, int len) { return 0; }
+int LAN_RecvPacket(u8* data) { return 0; }
+void Camera_Start(int num) {}
+void Camera_Stop(int num) {}
+void Camera_CaptureFrame(int num, u32* frame, int width, int height, bool yuv) {}
+DynamicLibrary* DynamicLibrary_Load(const char* lib) { return nullptr;}
+void DynamicLibrary_Unload(DynamicLibrary* lib) {}
+void* DynamicLibrary_LoadFunction(DynamicLibrary* lib, const char* name) { return nullptr; }
+}
\ No newline at end of file
diff --git a/test/common/TestCommon.cpp b/test/common/TestCommon.cpp
new file mode 100644
index 00000000..9bb7e982
--- /dev/null
+++ b/test/common/TestCommon.cpp
@@ -0,0 +1,23 @@
+/*
+    Copyright 2016-2023 melonDS team
+
+    This file is part of melonDS.
+
+    melonDS is free software: you can redistribute it and/or modify it under
+    the terms of the GNU General Public License as published by the Free
+    Software Foundation, either version 3 of the License, or (at your option)
+    any later version.
+
+    melonDS is distributed in the hope that it will be useful, but WITHOUT ANY
+    WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+    FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License along
+    with melonDS. If not, see http://www.gnu.org/licenses/.
+*/
+
+#include "TestCommon.h"
+
+namespace melonDS
+{
+}
diff --git a/test/common/TestCommon.h b/test/common/TestCommon.h
new file mode 100644
index 00000000..01585ab2
--- /dev/null
+++ b/test/common/TestCommon.h
@@ -0,0 +1,25 @@
+/*
+    Copyright 2016-2023 melonDS team
+
+    This file is part of melonDS.
+
+    melonDS is free software: you can redistribute it and/or modify it under
+    the terms of the GNU General Public License as published by the Free
+    Software Foundation, either version 3 of the License, or (at your option)
+    any later version.
+
+    melonDS is distributed in the hope that it will be useful, but WITHOUT ANY
+    WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+    FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License along
+    with melonDS. If not, see http://www.gnu.org/licenses/.
+*/
+
+#ifndef MELONDS_TESTCOMMON_H
+#define MELONDS_TESTCOMMON_H
+
+namespace melonDS
+{
+}
+#endif //MELONDS_TESTCOMMON_H