[PATCH v2 5/9] ntoskrnl.exe/tests: Cleanup test device when it already exists.

[Rémi Bernon]

This should help with stale devices when some test crashed.

Signed-off-by: Rémi Bernon 
---
 dlls/ntoskrnl.exe/tests/ntoskrnl.c | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)

diff --git a/dlls/ntoskrnl.exe/tests/ntoskrnl.c b/dlls/ntoskrnl.exe/tests/ntoskrnl.c
index fc213948f35..cf4b9d811cb 100644
--- a/dlls/ntoskrnl.exe/tests/ntoskrnl.c
+++ b/dlls/ntoskrnl.exe/tests/ntoskrnl.c
@@ -1416,6 +1416,7 @@ static void driver_start(struct testsign_context *ctx, const WCHAR *resource)
     static const WCHAR hardware_id[] = L"test_hardware_id\0";
     SP_DEVINFO_DATA device = {sizeof(SP_DEVINFO_DATA)};
     WCHAR path[MAX_PATH], filename[MAX_PATH];
+    SC_HANDLE manager, service;
     BOOL ret, need_reboot;
     HANDLE catalog;
     HDEVINFO set;
@@ -1462,6 +1463,29 @@ static void driver_start(struct testsign_context *ctx, const WCHAR *resource)
     ok(set != INVALID_HANDLE_VALUE, "failed to create device list, error %#x\n", GetLastError());

ret = SetupDiCreateDeviceInfoW(set, L"root\winetest\0", &GUID_NULL, NULL, NULL, 0, &device);
+    if (!ret && GetLastError() == ERROR_DEVINST_ALREADY_EXISTS)
+    {
+        ret = SetupDiOpenDeviceInfoW(set, L"root\winetest\0", NULL, 0, &device);
+        ok(ret, "failed to open device, error %#x\n", GetLastError());
+
+        ret = SetupDiCallClassInstaller(DIF_REMOVE, set, &device);
+        ok(ret, "failed to remove device, error %u\n", GetLastError());
+
+        ret = SetupDiDeleteDeviceInfo(set, &device);
+        ok(ret, "failed to delete device info, error %u\n", GetLastError());
+
+        /* Windows stops the service but does not delete it. */
+        manager = OpenSCManagerW(NULL, NULL, SC_MANAGER_CONNECT);
+        ok(!!manager, "failed to open service manager, error %u\n", GetLastError());
+
+        service = OpenServiceW(manager, L"winetest", SERVICE_STOP | DELETE);
+        if (service) unload_driver(service);
+        else ok(GetLastError() == ERROR_SERVICE_DOES_NOT_EXIST, "got error %u\n", GetLastError());
+
+        CloseServiceHandle(manager);
+
+        ret = SetupDiCreateDeviceInfoW(set, L"root\winetest\0", &GUID_NULL, NULL, NULL, 0, &device);
+    }
     ok(ret, "failed to create device, error %#x\n", GetLastError());

ret = SetupDiSetDeviceRegistryPropertyW( set, &device, SPDRP_HARDWAREID,