advapi32/tests: Add test prototype for RegQueryValueEx HKEY_PERFORMANCE_DATA.

dlls/advapi32/tests/registry.c

@@ -27,6 +27,7 @@
 #include "winbase.h"
 #include "winternl.h"
 #include "winreg.h"
+#include "winperf.h"
 #include "winsvc.h"
 #include "winerror.h"
 #include "aclapi.h"
@@ -3480,6 +3481,54 @@ static void test_RegNotifyChangeKeyValue(void)
     CloseHandle(event);
 }
 
+static void test_RegQueryValueExPerformanceData(void)
+{
+    DWORD cbData, len;
+    BYTE *value;
+    DWORD dwret;
+    LONG limit = 6;
+    PERF_DATA_BLOCK *pdb;
+
+    /* Test with data == NULL */
+    dwret = RegQueryValueExA( HKEY_PERFORMANCE_DATA, "Global", NULL, NULL, NULL, &cbData );
+    todo_wine ok( dwret == ERROR_MORE_DATA, "expected ERROR_MORE_DATA, got %d\n", dwret );
+
+    /* Test ERROR_MORE_DATA, start with small buffer */
+    len = 10;
+    value = HeapAlloc(GetProcessHeap(), 0, len);
+    cbData = len;
+    dwret = RegQueryValueExA( HKEY_PERFORMANCE_DATA, "Global", NULL, NULL, value, &cbData );
+    todo_wine ok( dwret == ERROR_MORE_DATA, "expected ERROR_MORE_DATA, got %d\n", dwret );
+    while( dwret == ERROR_MORE_DATA && limit)
+    {
+        len = len * 10;
+        value = HeapReAlloc( GetProcessHeap(), 0, value, len );
+        cbData = len;
+        dwret = RegQueryValueExA( HKEY_PERFORMANCE_DATA, "Global", NULL, NULL, value, &cbData );
+        limit--;
+    }
+    ok(limit > 0, "too many times ERROR_MORE_DATA returned\n");
+
+    todo_wine ok(dwret == ERROR_SUCCESS, "expected ERROR_SUCCESS, got %d\n", dwret);
+
+    /* Check returned data */
+    if (dwret == ERROR_SUCCESS)
+    {
+        todo_wine ok(len >= sizeof(PERF_DATA_BLOCK), "got size %d\n", len);
+        if (len >= sizeof(PERF_DATA_BLOCK)) {
+            pdb = (PERF_DATA_BLOCK*) value;
+            ok(pdb->Signature[0] == 'P', "expected Signature[0] = 'P', got 0x%x\n", pdb->Signature[0]);
+            ok(pdb->Signature[1] == 'E', "expected Signature[1] = 'E', got 0x%x\n", pdb->Signature[1]);
+            ok(pdb->Signature[2] == 'R', "expected Signature[2] = 'R', got 0x%x\n", pdb->Signature[2]);
+            ok(pdb->Signature[3] == 'F', "expected Signature[3] = 'F', got 0x%x\n", pdb->Signature[3]);
+            /* TODO: check other field */
+        }
+    }
+
+    HeapFree(GetProcessHeap(), 0, value);
+}
+
+
 START_TEST(registry)
 {
     /* Load pointers for functions that are not available in all Windows versions */
@@ -3515,6 +3564,7 @@ START_TEST(registry)
     test_delete_key_value();
     test_RegOpenCurrentUser();
     test_RegNotifyChangeKeyValue();
+    test_RegQueryValueExPerformanceData();
 
     /* cleanup */
     delete_key( hkey_main );