ole32: Add tests for errors returned by CoCreateInstance for classes that are not registered.

dlls/ole32/tests/compobj.c

@@ -261,6 +261,18 @@ static void test_CoCreateInstance(void)
     ok(pUnk == NULL, "CoCreateInstance should have changed the passed in pointer to NULL, instead of %p\n", pUnk);
 
     OleInitialize(NULL);
+
+    /* test errors returned for non-registered clsids */
+    hr = CoCreateInstance(&CLSID_non_existent, NULL, CLSCTX_INPROC_SERVER, &IID_IUnknown, (void **)&pUnk);
+    ok(hr == REGDB_E_CLASSNOTREG, "CoCreateInstance for non-registered inproc server should have returned REGDB_E_CLASSNOTREG instead of 0x%08x\n", hr);
+    hr = CoCreateInstance(&CLSID_non_existent, NULL, CLSCTX_INPROC_HANDLER, &IID_IUnknown, (void **)&pUnk);
+    ok(hr == REGDB_E_CLASSNOTREG, "CoCreateInstance for non-registered inproc handler should have returned REGDB_E_CLASSNOTREG instead of 0x%08x\n", hr);
+    hr = CoCreateInstance(&CLSID_non_existent, NULL, CLSCTX_LOCAL_SERVER, &IID_IUnknown, (void **)&pUnk);
+    ok(hr == REGDB_E_CLASSNOTREG, "CoCreateInstance for non-registered local server should have returned REGDB_E_CLASSNOTREG instead of 0x%08x\n", hr);
+    hr = CoCreateInstance(&CLSID_non_existent, NULL, CLSCTX_REMOTE_SERVER, &IID_IUnknown, (void **)&pUnk);
+    todo_wine
+    ok(hr == REGDB_E_CLASSNOTREG, "CoCreateInstance for non-registered remote server should have returned REGDB_E_CLASSNOTREG instead of 0x%08x\n", hr);
+
     hr = CoCreateInstance(rclsid, NULL, CLSCTX_INPROC_SERVER, &IID_IUnknown, (void **)&pUnk);
     if(hr == REGDB_E_CLASSNOTREG)
     {