From de242fcbac97685254049d1ca22d80dee92abb8a Mon Sep 17 00:00:00 2001
From: zaryabzip <110787259+zaryabzip@users.noreply.github.com>
Date: Mon, 2 Nov 2026 21:14:22 +0500
Subject: [PATCH] test(libScePad): check the thirteen exports' argument checks

---
 core/libs/prx/libScePad/CMakeLists.txt     |  9 ++++
 core/libs/tests/GuestPadFirmwareChecks.cpp | 62 ++++++++++++++++++++++
 2 files changed, 71 insertions(+)
 create mode 100644 core/libs/tests/GuestPadFirmwareChecks.cpp

diff --git a/core/libs/prx/libScePad/CMakeLists.txt b/core/libs/prx/libScePad/CMakeLists.txt
index b06aef4f09..f979b4eff4 100644
--- a/core/libs/prx/libScePad/CMakeLists.txt
+++ b/core/libs/prx/libScePad/CMakeLists.txt
@@ -42,6 +42,15 @@ if(BUILD_TESTING)
         set_tests_properties(guest_pad_controller_queries PROPERTIES ENVIRONMENT_MODIFICATION
             "PATH=path_list_prepend:$<TARGET_FILE_DIR:libScePad>")
     endif()
+    add_test_executable(guest_pad_firmware_checks_tests ${LIBS_INCLUDE_DIR}/tests/GuestPadFirmwareChecks.cpp)
+    target_include_directories(guest_pad_firmware_checks_tests PRIVATE ${LIBS_INCLUDE_DIR})
+    target_link_libraries(guest_pad_firmware_checks_tests PRIVATE libScePad libc)
+    configure_windows_unwind(guest_pad_firmware_checks_tests)
+    add_test(NAME guest_pad_firmware_checks COMMAND guest_pad_firmware_checks_tests)
+    if(WIN32)
+        set_tests_properties(guest_pad_firmware_checks PROPERTIES ENVIRONMENT_MODIFICATION
+            "PATH=path_list_prepend:$<TARGET_FILE_DIR:libScePad>")
+    endif()
 endif()
 
 if(BUILD_TESTING)
diff --git a/core/libs/tests/GuestPadFirmwareChecks.cpp b/core/libs/tests/GuestPadFirmwareChecks.cpp
new file mode 100644
index 0000000000..54fe7ec02c
--- /dev/null
+++ b/core/libs/tests/GuestPadFirmwareChecks.cpp
@@ -0,0 +1,62 @@
+#include "SceTypes.hpp"
+#include "prx/libScePad/include/Pad.hpp"
+#include "prx/libScePad/include/PadState.hpp"
+#include <array>
+#include <cstdint>
+#include <cstdlib>
+
+using ReadHistoryFn = int (APS5_VABI*)(std::int32_t, PadHistoryData*, std::uint32_t);
+using OpenExt2Fn = int (APS5_VABI*)(std::int32_t, std::int32_t, const void*);
+
+static void Require(bool value) { if (!value) std::abort(); }
+
+template <typename Function, typename Export>
+static Function As(Export function) {
+    return reinterpret_cast<Function>(function);
+}
+
+int main() {
+    const auto readHistory = As<ReadHistoryFn>(&scePadReadHistory);
+    const auto openExt2 = As<OpenExt2Fn>(&scePadOpenExt2);
+    alignas(8) std::array<std::uint8_t, 0x960> buffer{};
+    std::array<std::uint8_t, 0x10> param{};
+    std::uint32_t capability = 7;
+    std::uint64_t count = 7;
+    std::uint64_t activeTime = 7;
+    std::int32_t deviceId = 7;
+    auto* data = buffer.data();
+
+    Require(scePadGetDeviceInfo(0, reinterpret_cast<PadDeviceInfo*>(data)) == PAD_ERROR_NOT_INITIALIZED);
+    Require(scePadGetCapability(0, &capability) == PAD_ERROR_NOT_INITIALIZED && capability == 7);
+    Require(scePadGetVersionInfo(1, reinterpret_cast<PadVersionInfo*>(data)) == PAD_ERROR_NOT_INITIALIZED);
+    Require(scePadGetIdleCount(1) == 0);
+    Require(scePadGetControllerIdleCount(1, &count) == PAD_ERROR_NOT_INITIALIZED && count == 7);
+    Require(scePadGetActiveTime(1, 0, &activeTime) == PAD_ERROR_NOT_INITIALIZED && activeTime == 7);
+    Require(scePadSetPS4BcVibrationMode(0) == PAD_ERROR_NOT_INITIALIZED);
+    Require(scePadGetInfoByPortType(1, reinterpret_cast<PadPortInfo*>(data)) == PAD_ERROR_INVALID_ARG);
+    Require(scePadGetInfoByPortType(0, reinterpret_cast<PadPortInfo*>(data)) == PAD_ERROR_NOT_INITIALIZED);
+    Require(scePadGetInfoByPortType(2, nullptr) == PAD_ERROR_NOT_INITIALIZED);
+    Require(scePadGetDeviceId(1, &deviceId) == PAD_ERROR_NOT_INITIALIZED && deviceId == 7);
+    Require(scePadGetExtensionUnitInfo(1, reinterpret_cast<PadExtensionUnitInfo*>(data)) == PAD_ERROR_NOT_INITIALIZED);
+    Require(readHistory(1, reinterpret_cast<PadHistoryData*>(data), 0x960) == PAD_ERROR_NOT_INITIALIZED);
+    Require(openExt2(0x10000000, 0x10, param.data()) == PAD_ERROR_NOT_INITIALIZED);
+    Require(scePadReadStateExt(12345, reinterpret_cast<PadDataExtended*>(data)) == PAD_ERROR_INVALID_HANDLE);
+
+    Require(scePadInit_nid_postfix() == PAD_OK);
+    Require(scePadGetDeviceInfo(0, nullptr) == PAD_ERROR_INVALID_ARG);
+    Require(scePadGetCapability(0, nullptr) == PAD_ERROR_INVALID_ARG);
+    Require(scePadGetVersionInfo(1, nullptr) == PAD_ERROR_INVALID_ARG);
+    Require(scePadGetControllerIdleCount(0, &count) == PAD_ERROR_INVALID_ARG && scePadGetControllerIdleCount(1, nullptr) == PAD_ERROR_INVALID_ARG);
+    Require(scePadGetActiveTime(1, 0, nullptr) == PAD_ERROR_INVALID_ARG);
+    for (int type : {1, 3, 4, -1}) Require(scePadGetInfoByPortType(type, reinterpret_cast<PadPortInfo*>(data)) == PAD_ERROR_INVALID_ARG);
+    Require(scePadGetDeviceId(1, nullptr) == PAD_ERROR_INVALID_ARG);
+    Require(scePadGetDeviceId(12345, &deviceId) == PAD_ERROR_INVALID_HANDLE && deviceId == -1);
+    Require(scePadGetExtensionUnitInfo(1, nullptr) == PAD_ERROR_INVALID_ARG);
+    for (std::uint32_t size : {0u, 0x48u, 0x958u, 0x961u}) Require(readHistory(1, reinterpret_cast<PadHistoryData*>(data), size) == PAD_ERROR_INVALID_ARG);
+    Require(openExt2(0x10000000, 0x8, param.data()) == PAD_ERROR_INVALID_ARG && openExt2(0x10000000, 0x10, nullptr) == PAD_ERROR_INVALID_ARG);
+
+    const int handle = scePadOpen_nid_postfix(0x10000000, PAD_PORT_TYPE_STANDARD, 0, nullptr);
+    Require(handle > 0);
+    Require(scePadReadStateExt(handle, nullptr) == PAD_ERROR_INVALID_ARG);
+    return 0;
+}