mirror of https://github.com/OpenTTD/OpenTTD
Codechange: Add unit-test to check if nested widget parts of properly closed.
Properly closed means exactly one EndContainer for every Container widget.pull/11429/head
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@ -47,3 +47,29 @@ TEST_CASE("WindowDesc - ini_key validity")
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CHECK((has_widget == has_inikey));
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}
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/**
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* Test if a NWidgetTree is properly closed, meaning the number of container-type parts matches the number of
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* EndContainer() parts.
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* @param nwid_begin Pointer to beginning of nested widget parts.
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* @param nwid_end Pointer to ending of nested widget parts.
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* @return True iff nested tree is properly closed.
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*/
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static bool IsNWidgetTreeClosed(const NWidgetPart *nwid_begin, const NWidgetPart *nwid_end)
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{
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int depth = 0;
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for (; nwid_begin < nwid_end; ++nwid_begin) {
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if (IsContainerWidgetType(nwid_begin->type)) ++depth;
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if (nwid_begin->type == WPT_ENDCONTAINER) --depth;
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}
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return depth == 0;
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}
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TEST_CASE("WindowDesc - NWidgetParts properly closed")
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{
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const WindowDesc *window_desc = GENERATE(from_range(std::begin(*_window_descs), std::end(*_window_descs)));
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INFO(fmt::format("{}:{}", window_desc->file, window_desc->line));
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CHECK(IsNWidgetTreeClosed(window_desc->nwid_begin, window_desc->nwid_end));
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}
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@ -1294,6 +1294,7 @@ static inline NWidgetPart NWidgetFunction(NWidgetFunctionType *func_ptr)
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return part;
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}
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bool IsContainerWidgetType(WidgetType tp);
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NWidgetContainer *MakeNWidgets(const NWidgetPart *nwid_begin, const NWidgetPart *nwid_end, int *biggest_index, NWidgetContainer *container);
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NWidgetContainer *MakeWindowNWidgetTree(const NWidgetPart *nwid_begin, const NWidgetPart *nwid_end, int *biggest_index, NWidgetStacked **shade_select);
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