diff --git a/dlls/msctf/tests/inputprocessor.c b/dlls/msctf/tests/inputprocessor.c
index 0e8ab5b16f1..34e47e5a30b 100644
--- a/dlls/msctf/tests/inputprocessor.c
+++ b/dlls/msctf/tests/inputprocessor.c
@@ -31,9 +31,17 @@
 
 static ITfInputProcessorProfiles* g_ipp;
 static LANGID gLangid;
+static ITfCategoryMgr * g_cm;
 
 DEFINE_GUID(CLSID_FakeService, 0xEDE1A7AD,0x66DE,0x47E0,0xB6,0x20,0x3E,0x92,0xF8,0x24,0x6B,0xF3);
 DEFINE_GUID(CLSID_TF_InputProcessorProfiles, 0x33c53a50,0xf456,0x4884,0xb0,0x49,0x85,0xfd,0x64,0x3e,0xcf,0xed);
+DEFINE_GUID(CLSID_TF_CategoryMgr,         0xA4B544A1,0x438D,0x4B41,0x93,0x25,0x86,0x95,0x23,0xE2,0xD6,0xC7);
+DEFINE_GUID(GUID_TFCAT_TIP_KEYBOARD,     0x34745c63,0xb2f0,0x4784,0x8b,0x67,0x5e,0x12,0xc8,0x70,0x1a,0x31);
+DEFINE_GUID(GUID_TFCAT_TIP_SPEECH,       0xB5A73CD1,0x8355,0x426B,0xA1,0x61,0x25,0x98,0x08,0xF2,0x6B,0x14);
+DEFINE_GUID(GUID_TFCAT_TIP_HANDWRITING,  0x246ecb87,0xc2f2,0x4abe,0x90,0x5b,0xc8,0xb3,0x8a,0xdd,0x2c,0x43);
+DEFINE_GUID (GUID_TFCAT_DISPLAYATTRIBUTEPROVIDER,  0x046B8C80,0x1647,0x40F7,0x9B,0x21,0xB9,0x3B,0x81,0xAA,0xBC,0x1B);
+DEFINE_GUID(GUID_NULL,0,0,0,0,0,0,0,0,0,0,0);
+
 
 static HRESULT initialize(void)
 {
@@ -41,6 +49,9 @@ static HRESULT initialize(void)
     CoInitialize(NULL);
     hr = CoCreateInstance (&CLSID_TF_InputProcessorProfiles, NULL,
           CLSCTX_INPROC_SERVER, &IID_ITfInputProcessorProfiles, (void**)&g_ipp);
+    if (SUCCEEDED(hr))
+        hr = CoCreateInstance (&CLSID_TF_CategoryMgr, NULL,
+          CLSCTX_INPROC_SERVER, &IID_ITfCategoryMgr, (void**)&g_cm);
     return hr;
 }
 
@@ -48,6 +59,8 @@ static void cleanup(void)
 {
     if (g_ipp)
         ITfInputProcessorProfiles_Release(g_ipp);
+    if (g_cm)
+        ITfCategoryMgr_Release(g_cm);
     CoUninitialize();
 }
 
@@ -71,12 +84,28 @@ static void test_Unregister(void)
     ok(SUCCEEDED(hr),"Unable to unregister text service(%x)\n",hr);
 }
 
+static void test_RegisterCategory(void)
+{
+    HRESULT hr;
+    hr = ITfCategoryMgr_RegisterCategory(g_cm, &CLSID_FakeService, &GUID_TFCAT_TIP_KEYBOARD, &CLSID_FakeService);
+    ok(SUCCEEDED(hr),"ITfCategoryMgr_RegisterCategory failed\n");
+}
+
+static void test_UnregisterCategory(void)
+{
+    HRESULT hr;
+    hr = ITfCategoryMgr_UnregisterCategory(g_cm, &CLSID_FakeService, &GUID_TFCAT_TIP_KEYBOARD, &CLSID_FakeService);
+    todo_wine ok(SUCCEEDED(hr),"ITfCategoryMgr_UnregisterCategory failed\n");
+}
+
 START_TEST(inputprocessor)
 {
     if (SUCCEEDED(initialize()))
     {
         gLangid = GetUserDefaultLCID();
         test_Register();
+        test_RegisterCategory();
+        test_UnregisterCategory();
         test_Unregister();
     }
     else