[PATCH v3 1/2] comctl32/tests: Add test for header item rect caching in LVS_REPORT listview during paint.

[Jacob Czekalla]

From: Jacob Czekalla

Tests how the rects for the listviews header should be refreshed during painting.
---
 dlls/comctl32/tests/listview.c | 54 ++++++++++++++++++++++++++++++++++
 1 file changed, 54 insertions(+)

diff --git a/dlls/comctl32/tests/listview.c b/dlls/comctl32/tests/listview.c
index b767106e97a..1020f28b092 100644
--- a/dlls/comctl32/tests/listview.c
+++ b/dlls/comctl32/tests/listview.c
@@ -7489,6 +7489,59 @@ static void test_LVM_GETHOTCURSOR(void)
     DestroyWindow(hwnd);
 }

+static void test_column_rect_caching(void)
+{
+    HWND listview, header;
+    LVCOLUMNA column = { 0 };
+    LVITEMA item = { 0 };
+    char a_text[] = "A", b_text[] = "B";
+    int order[2] = { 1, 0 };
+    RECT listview_rect;
+    POINT pt;
+    LVHITTESTINFO hit_info = { 0 };
+
+    listview = create_listview_control(LVS_REPORT);
+    subclass_header(listview);
+    header = (HWND)SendMessageA(listview, LVM_GETHEADER, 0, 0);
+
+    column.mask = LVCF_TEXT | LVCF_WIDTH | LVCF_SUBITEM;
+    column.cx = 50;
+    column.pszText = a_text;
+    column.iSubItem = 0;
+    SendMessageA(listview, LVM_INSERTCOLUMNA, 0, (LPARAM)&column);
+    column.cx = 50;
+    column.pszText = b_text;
+    column.iSubItem = 1;
+    SendMessageA(listview, LVM_INSERTCOLUMNA, 1, (LPARAM)&column);
+
+    item.mask = LVIF_TEXT;
+    item.iItem = 0;
+    item.pszText = a_text;
+    SendMessageA(listview, LVM_INSERTITEMA, 0, (LPARAM)&item);
+    item.iSubItem = 1;
+    item.iItem = 0;
+    item.pszText = b_text;
+    SendMessageA(listview, LVM_SETITEMTEXTA, 0, (LPARAM)&item);
+
+    listview_rect.left = LVIR_LABEL;
+    SendMessageA(listview, LVM_GETITEMRECT, 0, (LPARAM)&listview_rect);
+    pt.x = listview_rect.left + 5;
+    pt.y = listview_rect.top + 5;
+    hit_info.pt = pt;
+    SendMessageA(listview, LVM_SUBITEMHITTEST, 0, (LPARAM)&hit_info);
+    ok(hit_info.iSubItem == 0, "expected 0, but got %d\n", hit_info.iSubItem);
+
+    SendMessageA(header, HDM_SETORDERARRAY, 2, (LPARAM)&order);
+
+    ZeroMemory(&hit_info, sizeof(hit_info));
+    hit_info.pt = pt;
+    SendMessageA(listview, LVM_SUBITEMHITTEST, 0, (LPARAM)&hit_info);
+    todo_wine
+    ok(hit_info.iSubItem == 1, "expected 1, but got %d\n", hit_info.iSubItem);
+
+    DestroyWindow(listview);
+}
+
 START_TEST(listview)
 {
     ULONG_PTR ctx_cookie;
@@ -7559,6 +7612,7 @@ START_TEST(listview)
     test_custom_sort();
     test_LVM_GETNEXTITEM();
     test_LVM_GETHOTCURSOR();
+    test_column_rect_caching();

if (!load_v6_module(&ctx_cookie, &hCtx))
     {