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@@ -629,4 +629,89 @@ TEST_CASE("LayoutIsolation.Document")
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TestsShell::ShutdownShell();
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}
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+static const String rml_flexbox_shrink_to_fit_nested = R"(
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+<rml>
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+<head>
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+ <title>Flex - Shrink-to-fit 01</title>
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+ <link type="text/rcss" href="/../Tests/Data/style.rcss"/>
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+ <style>
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+ body { width: 10000px; height: 2000px; }
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+ .shrink-to-fit {
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+ float: left;
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+ clear: both;
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+ margin: 10px 0;
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+ border: 2px #e8e8e8;
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+ }
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+ .outer {
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+ display: inline-flex;
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+ border: 1px red;
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+ padding: 30px;
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+ }
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+ .inner {
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+ border: 1px blue;
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+ padding: 30px;
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+ }
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+ </style>
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+</head>
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+<body>
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+<div class="shrink-to-fit">
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+ Before
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+ <div class="outer">
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+ %s
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+ <div class="inner">Flex</div>
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+ %s
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+ </div>
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+ After
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+</div>
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+</body>
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+</rml>
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+)";
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+
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+TEST_CASE("LayoutIsolation.FlexFormat.shrink-to-fit")
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+{
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+ Context* context = TestsShell::GetContext();
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+ REQUIRE(context);
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+
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+ // The number of flex format count listed in this mapping is not an end-all be-all, but we should be made aware if
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+ // it changes, especially for the worse.
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+ const UnorderedMap<int, int> expected_num_nest_levels_versus_num_flex_formats = {
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+ {1, 3},
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+ {2, 8},
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+ {3, 13},
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+ {4, 18},
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+ {5, 23},
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+ {6, 28},
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+ {7, 33},
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+ {8, 38},
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+ {9, 43},
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+ {10, 48},
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+ };
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+
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+ for (int num_nest_levels = 1; num_nest_levels <= 10; num_nest_levels++)
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+ {
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+ const Rml::String document_rml = Rml::CreateString(rml_flexbox_shrink_to_fit_nested.c_str(),
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+ StringUtilities::RepeatString(R"(<div class="inner"><div class="outer">)", num_nest_levels - 1).c_str(),
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+ StringUtilities::RepeatString(R"(</div></div>)", num_nest_levels - 1).c_str());
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+
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+ FormatIndependentDebugTracker format_independent_tracker;
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+ ElementDocument* document = context->LoadDocumentFromMemory(document_rml);
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+
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+ document->Show();
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+ TestsShell::RenderLoop();
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+
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+ int num_flex_formats = 0;
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+ for (const auto& entry : format_independent_tracker.GetEntries())
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+ {
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+ if (entry.context_type == FormattingContextType::Flex && !entry.from_cache)
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+ num_flex_formats += 1;
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+ }
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+ INFO(format_independent_tracker.ToString());
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+ CHECK(num_flex_formats == expected_num_nest_levels_versus_num_flex_formats.at(num_nest_levels));
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+
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+ document->Close();
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+ }
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+
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+ TestsShell::ShutdownShell();
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+}
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+
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#endif // RMLUI_DEBUG
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Michael Ragazzon